chore(backend): add roslynator and fix diagnostics

.editorconfig

@@ -1,8 +1,52 @@
-[*.cs]
+[*]
 # We use PostgresSQL which doesn't recommend more specific string types
 resharper_entity_framework_model_validation_unlimited_string_length_highlighting = none
 # This is raised for every single property of records returned by endpoints
 resharper_not_accessed_positional_property_local_highlighting = none
 
+
+# Microsoft .NET properties
+csharp_new_line_before_members_in_object_initializers = false
+csharp_preferred_modifier_order = public, internal, protected, private, file, new, required, abstract, virtual, sealed, static, override, extern, unsafe, volatile, async, readonly:suggestion
+
+# ReSharper properties
+resharper_align_multiline_binary_expressions_chain = false
+resharper_arguments_skip_single = true
+resharper_blank_lines_after_start_comment = 0
+resharper_blank_lines_around_single_line_invocable = 0
+resharper_blank_lines_before_block_statements = 0
+resharper_braces_for_foreach = required_for_multiline
+resharper_braces_for_ifelse = required_for_multiline
+resharper_braces_redundant = false
+resharper_csharp_blank_lines_around_field = 0
+resharper_csharp_empty_block_style = together_same_line
+resharper_csharp_max_line_length = 166
+resharper_csharp_wrap_after_declaration_lpar = true
+resharper_csharp_wrap_before_binary_opsign = true
+resharper_csharp_wrap_before_declaration_rpar = true
+resharper_csharp_wrap_parameters_style = chop_if_long
+resharper_indent_preprocessor_other = do_not_change
+resharper_instance_members_qualify_declared_in =
+resharper_keep_existing_attribute_arrangement = true
+resharper_max_attribute_length_for_same_line = 70
+resharper_place_accessorholder_attribute_on_same_line = false
+resharper_place_expr_method_on_single_line = if_owner_is_single_line
+resharper_place_method_attribute_on_same_line = if_owner_is_single_line
+resharper_place_record_field_attribute_on_same_line = true
+resharper_place_simple_embedded_statement_on_same_line = false
+resharper_place_simple_initializer_on_single_line = false
+resharper_place_simple_list_pattern_on_single_line = false
+resharper_space_within_empty_braces = false
+resharper_trailing_comma_in_multiline_lists = true
+resharper_wrap_after_invocation_lpar = false
+resharper_wrap_before_invocation_rpar = false
+resharper_wrap_before_primary_constructor_declaration_rpar = true
+resharper_wrap_chained_binary_patterns = chop_if_long
+resharper_wrap_list_pattern = chop_always
+resharper_wrap_object_and_collection_initializer_style = chop_always
+
+# Roslynator properties
+dotnet_diagnostic.RCS1194.severity = none
+
 [*generated.cs]
 generated_code = true

Foxnouns.Backend/BuildInfo.cs

@@ -7,19 +7,21 @@ public static class BuildInfo
 
     public static async Task ReadBuildInfo()
     {
-        await using var stream = typeof(BuildInfo).Assembly.GetManifestResourceStream("version");
+        await using Stream? stream = typeof(BuildInfo).Assembly.GetManifestResourceStream(
+            "version"
+        );
         if (stream == null)
             return;
 
         using var reader = new StreamReader(stream);
-        var data = (await reader.ReadToEndAsync()).Trim().Split("\n");
+        string[] data = (await reader.ReadToEndAsync()).Trim().Split("\n");
         if (data.Length < 3)
             return;
 
         Hash = data[0];
-        var dirty = data[2] == "dirty";
+        bool dirty = data[2] == "dirty";
 
-        var versionData = data[1].Split("-");
+        string[] versionData = data[1].Split("-");
         if (versionData.Length < 3)
             return;
         Version = versionData[0];

Foxnouns.Backend/Controllers/Authentication/AuthController.cs

@@ -33,14 +33,16 @@ public class AuthController(
             config.GoogleAuth.Enabled,
             config.TumblrAuth.Enabled
         );
-        var state = HttpUtility.UrlEncode(await keyCacheService.GenerateAuthStateAsync(ct));
+        string state = HttpUtility.UrlEncode(await keyCacheService.GenerateAuthStateAsync(ct));
         string? discord = null;
         if (config.DiscordAuth is { ClientId: not null, ClientSecret: not null })
+        {
             discord =
-                $"https://discord.com/oauth2/authorize?response_type=code"
+                "https://discord.com/oauth2/authorize?response_type=code"
                 + $"&client_id={config.DiscordAuth.ClientId}&scope=identify"
                 + $"&prompt=none&state={state}"
                 + $"&redirect_uri={HttpUtility.UrlEncode($"{config.BaseUrl}/auth/callback/discord")}";
+        }
 
         return Ok(new UrlsResponse(config.EmailAuth.Enabled, discord, null, null));
     }
@@ -86,7 +88,7 @@ public class AuthController(
     )]
     public async Task<IActionResult> GetAuthMethodAsync(Snowflake id)
     {
-        var authMethod = await db
+        AuthMethod? authMethod = await db
             .AuthMethods.Include(a => a.FediverseApplication)
             .FirstOrDefaultAsync(a => a.UserId == CurrentUser!.Id && a.Id == id);
         if (authMethod == null)
@@ -99,17 +101,19 @@ public class AuthController(
     [Authorize("*")]
     public async Task<IActionResult> DeleteAuthMethodAsync(Snowflake id)
     {
-        var authMethods = await db
+        List<AuthMethod> authMethods = await db
             .AuthMethods.Where(a => a.UserId == CurrentUser!.Id)
             .ToListAsync();
         if (authMethods.Count < 2)
+        {
             throw new ApiError(
                 "You cannot remove your last authentication method.",
                 HttpStatusCode.BadRequest,
                 ErrorCode.LastAuthMethod
             );
+        }
 
-        var authMethod = authMethods.FirstOrDefault(a => a.Id == id);
+        AuthMethod? authMethod = authMethods.FirstOrDefault(a => a.Id == id);
         if (authMethod == null)
             throw new ApiError.NotFound("No authentication method with that ID found.");
 
@@ -119,6 +123,20 @@ public class AuthController(
             CurrentUser!.Id
         );
 
+        // If this is the user's last email, we should also clear the user's password.
+        if (
+            authMethod.AuthType == AuthType.Email
+            && authMethods.Count(a => a.AuthType == AuthType.Email) == 1
+        )
+        {
+            _logger.Debug(
+                "Deleted last email address for user {UserId}, resetting their password",
+                CurrentUser.Id
+            );
+            CurrentUser.Password = null;
+            db.Update(CurrentUser);
+        }
+
         db.Remove(authMethod);
         await db.SaveChangesAsync();
 

Foxnouns.Backend/Controllers/Authentication/DiscordAuthController.cs

@@ -34,8 +34,10 @@ public class DiscordAuthController(
         CheckRequirements();
         await keyCacheService.ValidateAuthStateAsync(req.State);
 
-        var remoteUser = await remoteAuthService.RequestDiscordTokenAsync(req.Code);
-        var user = await authService.AuthenticateUserAsync(AuthType.Discord, remoteUser.Id);
+        RemoteAuthService.RemoteUser remoteUser = await remoteAuthService.RequestDiscordTokenAsync(
+            req.Code
+        );
+        User? user = await authService.AuthenticateUserAsync(AuthType.Discord, remoteUser.Id);
         if (user != null)
             return Ok(await authService.GenerateUserTokenAsync(user));
 
@@ -45,23 +47,14 @@ public class DiscordAuthController(
             remoteUser.Id
         );
 
-        var ticket = AuthUtils.RandomToken();
+        string ticket = AuthUtils.RandomToken();
         await keyCacheService.SetKeyAsync(
             $"discord:{ticket}",
             remoteUser,
             Duration.FromMinutes(20)
         );
 
-        return Ok(
-            new CallbackResponse(
-                HasAccount: false,
-                Ticket: ticket,
-                RemoteUsername: remoteUser.Username,
-                User: null,
-                Token: null,
-                ExpiresAt: null
-            )
-        );
+        return Ok(new CallbackResponse(false, ticket, remoteUser.Username, null, null, null));
     }
 
     [HttpPost("register")]
@@ -70,7 +63,8 @@ public class DiscordAuthController(
         [FromBody] AuthController.OauthRegisterRequest req
     )
     {
-        var remoteUser = await keyCacheService.GetKeyAsync<RemoteAuthService.RemoteUser>(
+        RemoteAuthService.RemoteUser? remoteUser =
+            await keyCacheService.GetKeyAsync<RemoteAuthService.RemoteUser>(
                 $"discord:{req.Ticket}"
             );
         if (remoteUser == null)
@@ -88,7 +82,7 @@ public class DiscordAuthController(
             throw new ApiError.BadRequest("Invalid ticket", "ticket", req.Ticket);
         }
 
-        var user = await authService.CreateUserWithRemoteAuthAsync(
+        User user = await authService.CreateUserWithRemoteAuthAsync(
             req.Username,
             AuthType.Discord,
             remoteUser.Id,
@@ -104,13 +98,13 @@ public class DiscordAuthController(
     {
         CheckRequirements();
 
-        var state = await remoteAuthService.ValidateAddAccountRequestAsync(
+        string state = await remoteAuthService.ValidateAddAccountRequestAsync(
             CurrentUser!.Id,
             AuthType.Discord
         );
 
-        var url =
-            $"https://discord.com/oauth2/authorize?response_type=code"
+        string url =
+            "https://discord.com/oauth2/authorize?response_type=code"
             + $"&client_id={config.DiscordAuth.ClientId}&scope=identify"
             + $"&prompt=none&state={state}"
             + $"&redirect_uri={HttpUtility.UrlEncode($"{config.BaseUrl}/auth/callback/discord")}";
@@ -132,10 +126,12 @@ public class DiscordAuthController(
             AuthType.Discord
         );
 
-        var remoteUser = await remoteAuthService.RequestDiscordTokenAsync(req.Code);
+        RemoteAuthService.RemoteUser remoteUser = await remoteAuthService.RequestDiscordTokenAsync(
+            req.Code
+        );
         try
         {
-            var authMethod = await authService.AddAuthMethodAsync(
+            AuthMethod authMethod = await authService.AddAuthMethodAsync(
                 CurrentUser.Id,
                 AuthType.Discord,
                 remoteUser.Id,
@@ -169,8 +165,10 @@ public class DiscordAuthController(
     private void CheckRequirements()
     {
         if (!config.DiscordAuth.Enabled)
+        {
             throw new ApiError.BadRequest(
                 "Discord authentication is not enabled on this instance."
             );
         }
+    }
 }

Foxnouns.Backend/Controllers/Authentication/EmailAuthController.cs

@@ -1,3 +1,5 @@
+using System.Net;
+using EntityFramework.Exceptions.Common;
 using Foxnouns.Backend.Database;
 using Foxnouns.Backend.Database.Models;
 using Foxnouns.Backend.Extensions;
@@ -26,8 +28,8 @@ public class EmailAuthController(
 {
     private readonly ILogger _logger = logger.ForContext<EmailAuthController>();
 
-    [HttpPost("register")]
-    public async Task<IActionResult> RegisterAsync(
+    [HttpPost("register/init")]
+    public async Task<IActionResult> RegisterInitAsync(
         [FromBody] RegisterRequest req,
         CancellationToken ct = default
     )
@@ -37,11 +39,7 @@ public class EmailAuthController(
         if (!req.Email.Contains('@'))
             throw new ApiError.BadRequest("Email is invalid", "email", req.Email);
 
-        var state = await keyCacheService.GenerateRegisterEmailStateAsync(
-            req.Email,
-            userId: null,
-            ct
-        );
+        string state = await keyCacheService.GenerateRegisterEmailStateAsync(req.Email, null, ct);
 
         // If there's already a user with that email address, pretend we sent an email but actually ignore it
         if (
@@ -50,7 +48,9 @@ public class EmailAuthController(
                 ct
             )
         )
+        {
             return NoContent();
+        }
 
         mailService.QueueAccountCreationEmail(req.Email, state);
         return NoContent();
@@ -61,62 +61,35 @@ public class EmailAuthController(
     {
         CheckRequirements();
 
-        var state = await keyCacheService.GetRegisterEmailStateAsync(req.State);
-        if (state == null)
+        RegisterEmailState? state = await keyCacheService.GetRegisterEmailStateAsync(req.State);
+        if (state is not { ExistingUserId: null })
             throw new ApiError.BadRequest("Invalid state", "state", req.State);
 
-        // If this callback is for an existing user, add the email address to their auth methods
-        if (state.ExistingUserId != null)
-        {
-            var authMethod = await authService.AddAuthMethodAsync(
-                state.ExistingUserId.Value,
-                AuthType.Email,
-                state.Email
-            );
-            _logger.Debug(
-                "Added email auth {AuthId} for user {UserId}",
-                authMethod.Id,
-                state.ExistingUserId
-            );
-            return NoContent();
-        }
-
-        var ticket = AuthUtils.RandomToken();
+        string ticket = AuthUtils.RandomToken();
         await keyCacheService.SetKeyAsync($"email:{ticket}", state.Email, Duration.FromMinutes(20));
 
-        return Ok(
-            new CallbackResponse(
-                HasAccount: false,
-                Ticket: ticket,
-                RemoteUsername: state.Email,
-                User: null,
-                Token: null,
-                ExpiresAt: null
-            )
-        );
+        return Ok(new CallbackResponse(false, ticket, state.Email, null, null, null));
     }
 
-    [HttpPost("complete-registration")]
+    [HttpPost("register")]
     public async Task<IActionResult> CompleteRegistrationAsync(
         [FromBody] CompleteRegistrationRequest req
     )
     {
         CheckRequirements();
 
-        var email = await keyCacheService.GetKeyAsync($"email:{req.Ticket}");
+        string? email = await keyCacheService.GetKeyAsync($"email:{req.Ticket}");
         if (email == null)
             throw new ApiError.BadRequest("Unknown ticket", "ticket", req.Ticket);
 
-        // Check if username is valid at all
-        ValidationUtils.Validate([("username", ValidationUtils.ValidateUsername(req.Username))]);
-        // Check if username is already taken
-        if (await db.Users.AnyAsync(u => u.Username == req.Username))
-            throw new ApiError.BadRequest("Username is already taken", "username", req.Username);
+        User user = await authService.CreateUserWithPasswordAsync(
+            req.Username,
+            email,
+            req.Password
+        );
+        Application frontendApp = await db.GetFrontendApplicationAsync();
 
-        var user = await authService.CreateUserWithPasswordAsync(req.Username, email, req.Password);
-        var frontendApp = await db.GetFrontendApplicationAsync();
-
-        var (tokenStr, token) = authService.GenerateToken(
+        (string? tokenStr, Token? token) = authService.GenerateToken(
             user,
             frontendApp,
             ["*"],
@@ -130,7 +103,7 @@ public class EmailAuthController(
 
         return Ok(
             new AuthController.AuthResponse(
-                await userRenderer.RenderUserAsync(user, selfUser: user, renderMembers: false),
+                await userRenderer.RenderUserAsync(user, user, renderMembers: false),
                 tokenStr,
                 token.ExpiresAt
             )
@@ -146,19 +119,16 @@ public class EmailAuthController(
     {
         CheckRequirements();
 
-        var (user, authenticationResult) = await authService.AuthenticateUserAsync(
-            req.Email,
-            req.Password,
-            ct
-        );
+        (User? user, AuthService.EmailAuthenticationResult authenticationResult) =
+            await authService.AuthenticateUserAsync(req.Email, req.Password, ct);
         if (authenticationResult == AuthService.EmailAuthenticationResult.MfaRequired)
             throw new NotImplementedException("MFA is not implemented yet");
 
-        var frontendApp = await db.GetFrontendApplicationAsync(ct);
+        Application frontendApp = await db.GetFrontendApplicationAsync(ct);
 
         _logger.Debug("Logging user {Id} in with email and password", user.Id);
 
-        var (tokenStr, token) = authService.GenerateToken(
+        (string? tokenStr, Token? token) = authService.GenerateToken(
             user,
             frontendApp,
             ["*"],
@@ -172,25 +142,34 @@ public class EmailAuthController(
 
         return Ok(
             new AuthController.AuthResponse(
-                await userRenderer.RenderUserAsync(
-                    user,
-                    selfUser: user,
-                    renderMembers: false,
-                    ct: ct
-                ),
+                await userRenderer.RenderUserAsync(user, user, renderMembers: false, ct: ct),
                 tokenStr,
                 token.ExpiresAt
             )
         );
     }
 
-    [HttpPost("add")]
+    [HttpPost("change-password")]
+    [Authorize("*")]
+    public async Task<IActionResult> UpdatePasswordAsync([FromBody] ChangePasswordRequest req)
+    {
+        if (!await authService.ValidatePasswordAsync(CurrentUser!, req.Current))
+            throw new ApiError.Forbidden("Invalid password");
+
+        ValidationUtils.Validate([("new", ValidationUtils.ValidatePassword(req.New))]);
+
+        await authService.SetUserPasswordAsync(CurrentUser!, req.New);
+        await db.SaveChangesAsync();
+        return NoContent();
+    }
+
+    [HttpPost("add-email")]
     [Authorize("*")]
     public async Task<IActionResult> AddEmailAddressAsync([FromBody] AddEmailAddressRequest req)
     {
         CheckRequirements();
 
-        var emails = await db
+        List<AuthMethod> emails = await db
             .AuthMethods.Where(m => m.UserId == CurrentUser!.Id && m.AuthType == AuthType.Email)
             .ToListAsync();
         if (emails.Count > AuthUtils.MaxAuthMethodsPerType)
@@ -204,24 +183,21 @@ public class EmailAuthController(
 
         if (emails.Count != 0)
         {
-            var validPassword = await authService.ValidatePasswordAsync(CurrentUser!, req.Password);
-            if (!validPassword)
-            {
+            if (!await authService.ValidatePasswordAsync(CurrentUser!, req.Password))
                 throw new ApiError.Forbidden("Invalid password");
         }
-        }
         else
         {
             await authService.SetUserPasswordAsync(CurrentUser!, req.Password);
             await db.SaveChangesAsync();
         }
 
-        var state = await keyCacheService.GenerateRegisterEmailStateAsync(
+        string state = await keyCacheService.GenerateRegisterEmailStateAsync(
             req.Email,
-            userId: CurrentUser!.Id
+            CurrentUser!.Id
         );
 
-        var emailExists = await db
+        bool emailExists = await db
             .AuthMethods.Where(m => m.AuthType == AuthType.Email && m.RemoteId == req.Email)
             .AnyAsync();
         if (emailExists)
@@ -233,6 +209,48 @@ public class EmailAuthController(
         return NoContent();
     }
 
+    [HttpPost("add-email/callback")]
+    [Authorize("*")]
+    public async Task<IActionResult> AddEmailCallbackAsync([FromBody] CallbackRequest req)
+    {
+        CheckRequirements();
+
+        RegisterEmailState? state = await keyCacheService.GetRegisterEmailStateAsync(req.State);
+        if (state?.ExistingUserId != CurrentUser!.Id)
+            throw new ApiError.BadRequest("Invalid state", "state", req.State);
+
+        try
+        {
+            AuthMethod authMethod = await authService.AddAuthMethodAsync(
+                CurrentUser.Id,
+                AuthType.Email,
+                state.Email
+            );
+            _logger.Debug(
+                "Added email auth {AuthId} for user {UserId}",
+                authMethod.Id,
+                CurrentUser.Id
+            );
+
+            return Ok(
+                new AuthController.AddOauthAccountResponse(
+                    authMethod.Id,
+                    AuthType.Email,
+                    authMethod.RemoteId,
+                    null
+                )
+            );
+        }
+        catch (UniqueConstraintException)
+        {
+            throw new ApiError(
+                "That email address is already linked.",
+                HttpStatusCode.BadRequest,
+                ErrorCode.AccountAlreadyLinked
+            );
+        }
+    }
+
     public record AddEmailAddressRequest(string Email, string Password);
 
     private void CheckRequirements()
@@ -248,4 +266,6 @@ public class EmailAuthController(
     public record CompleteRegistrationRequest(string Ticket, string Username, string Password);
 
     public record CallbackRequest(string State);
+
+    public record ChangePasswordRequest(string Current, string New);
 }

Foxnouns.Backend/Controllers/Authentication/FediverseAuthController.cs

@@ -34,7 +34,7 @@ public class FediverseAuthController(
         if (instance.Any(c => c is '@' or ':' or '/') || !instance.Contains('.'))
             throw new ApiError.BadRequest("Not a valid domain.", "instance", instance);
 
-        var url = await fediverseAuthService.GenerateAuthUrlAsync(instance, forceRefresh);
+        string url = await fediverseAuthService.GenerateAuthUrlAsync(instance, forceRefresh);
         return Ok(new AuthController.SingleUrlResponse(url));
     }
 
@@ -42,22 +42,19 @@ public class FediverseAuthController(
     [ProducesResponseType<CallbackResponse>(statusCode: StatusCodes.Status200OK)]
     public async Task<IActionResult> FediverseCallbackAsync([FromBody] CallbackRequest req)
     {
-        var app = await fediverseAuthService.GetApplicationAsync(req.Instance);
-        var remoteUser = await fediverseAuthService.GetRemoteFediverseUserAsync(
-            app,
-            req.Code,
-            req.State
-        );
+        FediverseApplication app = await fediverseAuthService.GetApplicationAsync(req.Instance);
+        FediverseAuthService.FediverseUser remoteUser =
+            await fediverseAuthService.GetRemoteFediverseUserAsync(app, req.Code, req.State);
 
-        var user = await authService.AuthenticateUserAsync(
+        User? user = await authService.AuthenticateUserAsync(
             AuthType.Fediverse,
             remoteUser.Id,
-            instance: app
+            app
         );
         if (user != null)
             return Ok(await authService.GenerateUserTokenAsync(user));
 
-        var ticket = AuthUtils.RandomToken();
+        string ticket = AuthUtils.RandomToken();
         await keyCacheService.SetKeyAsync(
             $"fediverse:{ticket}",
             new FediverseTicketData(app.Id, remoteUser),
@@ -66,12 +63,12 @@ public class FediverseAuthController(
 
         return Ok(
             new CallbackResponse(
-                HasAccount: false,
-                Ticket: ticket,
-                RemoteUsername: $"@{remoteUser.Username}@{app.Domain}",
-                User: null,
-                Token: null,
-                ExpiresAt: null
+                false,
+                ticket,
+                $"@{remoteUser.Username}@{app.Domain}",
+                null,
+                null,
+                null
             )
         );
     }
@@ -82,14 +79,16 @@ public class FediverseAuthController(
         [FromBody] AuthController.OauthRegisterRequest req
     )
     {
-        var ticketData = await keyCacheService.GetKeyAsync<FediverseTicketData>(
+        FediverseTicketData? ticketData = await keyCacheService.GetKeyAsync<FediverseTicketData>(
             $"fediverse:{req.Ticket}",
-            delete: true
+            true
         );
         if (ticketData == null)
             throw new ApiError.BadRequest("Invalid ticket", "ticket", req.Ticket);
 
-        var app = await db.FediverseApplications.FindAsync(ticketData.ApplicationId);
+        FediverseApplication? app = await db.FediverseApplications.FindAsync(
+            ticketData.ApplicationId
+        );
         if (app == null)
             throw new FoxnounsError("Null application found for ticket");
 
@@ -111,12 +110,12 @@ public class FediverseAuthController(
             throw new ApiError.BadRequest("Invalid ticket", "ticket", req.Ticket);
         }
 
-        var user = await authService.CreateUserWithRemoteAuthAsync(
+        User user = await authService.CreateUserWithRemoteAuthAsync(
             req.Username,
             AuthType.Fediverse,
             ticketData.User.Id,
             ticketData.User.Username,
-            instance: app
+            app
         );
 
         return Ok(await authService.GenerateUserTokenAsync(user));
@@ -132,13 +131,13 @@ public class FediverseAuthController(
         if (instance.Any(c => c is '@' or ':' or '/') || !instance.Contains('.'))
             throw new ApiError.BadRequest("Not a valid domain.", "instance", instance);
 
-        var state = await remoteAuthService.ValidateAddAccountRequestAsync(
+        string state = await remoteAuthService.ValidateAddAccountRequestAsync(
             CurrentUser!.Id,
             AuthType.Fediverse,
             instance
         );
 
-        var url = await fediverseAuthService.GenerateAuthUrlAsync(instance, forceRefresh, state);
+        string url = await fediverseAuthService.GenerateAuthUrlAsync(instance, forceRefresh, state);
         return Ok(new AuthController.SingleUrlResponse(url));
     }
 
@@ -153,11 +152,12 @@ public class FediverseAuthController(
             req.Instance
         );
 
-        var app = await fediverseAuthService.GetApplicationAsync(req.Instance);
-        var remoteUser = await fediverseAuthService.GetRemoteFediverseUserAsync(app, req.Code);
+        FediverseApplication app = await fediverseAuthService.GetApplicationAsync(req.Instance);
+        FediverseAuthService.FediverseUser remoteUser =
+            await fediverseAuthService.GetRemoteFediverseUserAsync(app, req.Code);
         try
         {
-            var authMethod = await authService.AddAuthMethodAsync(
+            AuthMethod authMethod = await authService.AddAuthMethodAsync(
                 CurrentUser.Id,
                 AuthType.Fediverse,
                 remoteUser.Id,

Foxnouns.Backend/Controllers/ExportsController.cs

@@ -25,7 +25,7 @@ public class ExportsController(
     [HttpGet]
     public async Task<IActionResult> GetDataExportsAsync()
     {
-        var export = await db
+        DataExport? export = await db
             .DataExports.Where(d => d.UserId == CurrentUser!.Id)
             .OrderByDescending(d => d.Id)
             .FirstOrDefaultAsync();

Foxnouns.Backend/Controllers/FlagsController.cs

@@ -1,5 +1,6 @@
 using Coravel.Queuing.Interfaces;
 using Foxnouns.Backend.Database;
+using Foxnouns.Backend.Database.Models;
 using Foxnouns.Backend.Extensions;
 using Foxnouns.Backend.Jobs;
 using Foxnouns.Backend.Middleware;
@@ -7,6 +8,7 @@ using Foxnouns.Backend.Services;
 using Foxnouns.Backend.Utils;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Storage;
 
 namespace Foxnouns.Backend.Controllers;
 
@@ -29,7 +31,9 @@ public class FlagsController(
     )]
     public async Task<IActionResult> GetFlagsAsync(CancellationToken ct = default)
     {
-        var flags = await db.PrideFlags.Where(f => f.UserId == CurrentUser!.Id).ToListAsync(ct);
+        List<PrideFlag> flags = await db
+            .PrideFlags.Where(f => f.UserId == CurrentUser!.Id)
+            .ToListAsync(ct);
 
         return Ok(flags.Select(userRenderer.RenderPrideFlag));
     }
@@ -43,7 +47,7 @@ public class FlagsController(
     {
         ValidationUtils.Validate(ValidateFlag(req.Name, req.Description, req.Image));
 
-        var id = snowflakeGenerator.GenerateSnowflake();
+        Snowflake id = snowflakeGenerator.GenerateSnowflake();
 
         queue.QueueInvocableWithPayload<CreateFlagInvocable, CreateFlagPayload>(
             new CreateFlagPayload(id, CurrentUser!.Id, req.Name, req.Image, req.Description)
@@ -62,7 +66,7 @@ public class FlagsController(
     {
         ValidationUtils.Validate(ValidateFlag(req.Name, req.Description, null));
 
-        var flag = await db.PrideFlags.FirstOrDefaultAsync(f =>
+        PrideFlag? flag = await db.PrideFlags.FirstOrDefaultAsync(f =>
             f.Id == id && f.UserId == CurrentUser!.Id
         );
         if (flag == null)
@@ -90,20 +94,20 @@ public class FlagsController(
     [Authorize("user.update")]
     public async Task<IActionResult> DeleteFlagAsync(Snowflake id)
     {
-        await using var tx = await db.Database.BeginTransactionAsync();
+        await using IDbContextTransaction tx = await db.Database.BeginTransactionAsync();
 
-        var flag = await db.PrideFlags.FirstOrDefaultAsync(f =>
+        PrideFlag? flag = await db.PrideFlags.FirstOrDefaultAsync(f =>
             f.Id == id && f.UserId == CurrentUser!.Id
         );
         if (flag == null)
             throw new ApiError.NotFound("Unknown flag ID, or it's not your flag.");
 
-        var hash = flag.Hash;
+        string hash = flag.Hash;
 
         db.PrideFlags.Remove(flag);
         await db.SaveChangesAsync();
 
-        var flagCount = await db.PrideFlags.CountAsync(f => f.Hash == flag.Hash);
+        int flagCount = await db.PrideFlags.CountAsync(f => f.Hash == flag.Hash);
         if (flagCount == 0)
         {
             try
@@ -120,7 +124,9 @@ public class FlagsController(
             }
         }
         else
+        {
             _logger.Debug("Flag file {Hash} is used by other flags, not deleting", hash);
+        }
 
         await tx.CommitAsync();
 

Foxnouns.Backend/Controllers/InternalController.cs

@@ -44,21 +44,22 @@ public partial class InternalController(DatabaseContext db) : ControllerBase
     [HttpPost("request-data")]
     public async Task<IActionResult> GetRequestDataAsync([FromBody] RequestDataRequest req)
     {
-        var endpoint = GetEndpoint(HttpContext, req.Path, req.Method);
+        RouteEndpoint? endpoint = GetEndpoint(HttpContext, req.Path, req.Method);
         if (endpoint == null)
             throw new ApiError.BadRequest("Path/method combination is invalid");
 
-        var actionDescriptor = endpoint.Metadata.GetMetadata<ControllerActionDescriptor>();
-        var template = actionDescriptor?.AttributeRouteInfo?.Template;
+        ControllerActionDescriptor? actionDescriptor =
+            endpoint.Metadata.GetMetadata<ControllerActionDescriptor>();
+        string? template = actionDescriptor?.AttributeRouteInfo?.Template;
         if (template == null)
             throw new FoxnounsError("Template value was null on valid endpoint");
         template = GetCleanedTemplate(template);
 
         // If no token was supplied, or it isn't valid base 64, return a null user ID (limiting by IP)
-        if (!AuthUtils.TryParseToken(req.Token, out var rawToken))
+        if (!AuthUtils.TryParseToken(req.Token, out byte[]? rawToken))
             return Ok(new RequestDataResponse(null, template));
 
-        var userId = await db.GetTokenUserId(rawToken);
+        Snowflake? userId = await db.GetTokenUserId(rawToken);
         return Ok(new RequestDataResponse(userId, template));
     }
 
@@ -72,12 +73,13 @@ public partial class InternalController(DatabaseContext db) : ControllerBase
         string requestMethod
     )
     {
-        var endpointDataSource = httpContext.RequestServices.GetService<EndpointDataSource>();
+        EndpointDataSource? endpointDataSource =
+            httpContext.RequestServices.GetService<EndpointDataSource>();
         if (endpointDataSource == null)
             return null;
-        var endpoints = endpointDataSource.Endpoints.OfType<RouteEndpoint>();
+        IEnumerable<RouteEndpoint> endpoints = endpointDataSource.Endpoints.OfType<RouteEndpoint>();
 
-        foreach (var endpoint in endpoints)
+        foreach (RouteEndpoint? endpoint in endpoints)
         {
             if (endpoint.RoutePattern.RawText == null)
                 continue;
@@ -86,16 +88,19 @@ public partial class InternalController(DatabaseContext db) : ControllerBase
                 TemplateParser.Parse(endpoint.RoutePattern.RawText),
                 new RouteValueDictionary()
             );
-            if (!templateMatcher.TryMatch(url, new()))
+            if (!templateMatcher.TryMatch(url, new RouteValueDictionary()))
                 continue;
-            var httpMethodAttribute = endpoint.Metadata.GetMetadata<HttpMethodAttribute>();
+            HttpMethodAttribute? httpMethodAttribute =
+                endpoint.Metadata.GetMetadata<HttpMethodAttribute>();
             if (
-                httpMethodAttribute != null
-                && !httpMethodAttribute.HttpMethods.Any(x =>
+                httpMethodAttribute?.HttpMethods.Any(x =>
                     x.Equals(requestMethod, StringComparison.OrdinalIgnoreCase)
+                ) == false
             )
-            )
+            {
                 continue;
+            }
+
             return endpoint;
         }
 

Foxnouns.Backend/Controllers/MembersController.cs

@@ -9,6 +9,7 @@ using Foxnouns.Backend.Services;
 using Foxnouns.Backend.Utils;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Storage;
 using NodaTime;
 
 namespace Foxnouns.Backend.Controllers;
@@ -32,7 +33,7 @@ public class MembersController(
     )]
     public async Task<IActionResult> GetMembersAsync(string userRef, CancellationToken ct = default)
     {
-        var user = await db.ResolveUserAsync(userRef, CurrentToken, ct);
+        User user = await db.ResolveUserAsync(userRef, CurrentToken, ct);
         return Ok(await memberRenderer.RenderUserMembersAsync(user, CurrentToken));
     }
 
@@ -44,7 +45,7 @@ public class MembersController(
         CancellationToken ct = default
     )
     {
-        var member = await db.ResolveMemberAsync(userRef, memberRef, CurrentToken, ct);
+        Member member = await db.ResolveMemberAsync(userRef, memberRef, CurrentToken, ct);
         return Ok(memberRenderer.RenderMember(member, CurrentToken));
     }
 
@@ -78,7 +79,7 @@ public class MembersController(
             ]
         );
 
-        var memberCount = await db.Members.CountAsync(m => m.UserId == CurrentUser.Id, ct);
+        int memberCount = await db.Members.CountAsync(m => m.UserId == CurrentUser.Id, ct);
         if (memberCount >= MaxMemberCount)
             throw new ApiError.BadRequest("Maximum number of members reached");
 
@@ -120,9 +121,11 @@ public class MembersController(
         }
 
         if (req.Avatar != null)
+        {
             queue.QueueInvocableWithPayload<MemberAvatarUpdateInvocable, AvatarUpdatePayload>(
                 new AvatarUpdatePayload(member.Id, req.Avatar)
             );
+        }
 
         return Ok(memberRenderer.RenderMember(member, CurrentToken));
     }
@@ -134,8 +137,8 @@ public class MembersController(
         [FromBody] UpdateMemberRequest req
     )
     {
-        await using var tx = await db.Database.BeginTransactionAsync();
-        var member = await db.ResolveMemberAsync(CurrentUser!.Id, memberRef);
+        await using IDbContextTransaction tx = await db.Database.BeginTransactionAsync();
+        Member member = await db.ResolveMemberAsync(CurrentUser!.Id, memberRef);
         var errors = new List<(string, ValidationError?)>();
 
         // We might add extra validations for names later down the line.
@@ -197,7 +200,11 @@ public class MembersController(
 
         if (req.Flags != null)
         {
-            var flagError = await db.SetMemberFlagsAsync(CurrentUser!.Id, member.Id, req.Flags);
+            ValidationError? flagError = await db.SetMemberFlagsAsync(
+                CurrentUser!.Id,
+                member.Id,
+                req.Flags
+            );
             if (flagError != null)
                 errors.Add(("flags", flagError));
         }
@@ -210,9 +217,12 @@ public class MembersController(
         // (atomic operations are hard when combined with background jobs)
         // so it's in a separate block to the validation above.
         if (req.HasProperty(nameof(req.Avatar)))
+        {
             queue.QueueInvocableWithPayload<MemberAvatarUpdateInvocable, AvatarUpdatePayload>(
                 new AvatarUpdatePayload(member.Id, req.Avatar)
             );
+        }
+
         try
         {
             await db.SaveChangesAsync();
@@ -228,7 +238,7 @@ public class MembersController(
             throw new ApiError.BadRequest(
                 "A member with that name already exists",
                 "name",
-                req.Name!
+                req.Name
             );
         }
 
@@ -254,8 +264,8 @@ public class MembersController(
     [Authorize("member.update")]
     public async Task<IActionResult> DeleteMemberAsync(string memberRef)
     {
-        var member = await db.ResolveMemberAsync(CurrentUser!.Id, memberRef);
-        var deleteCount = await db
+        Member member = await db.ResolveMemberAsync(CurrentUser!.Id, memberRef);
+        int deleteCount = await db
             .Members.Where(m => m.UserId == CurrentUser!.Id && m.Id == member.Id)
             .ExecuteDeleteAsync();
         if (deleteCount == 0)
@@ -289,9 +299,9 @@ public class MembersController(
     [ProducesResponseType<UserRendererService.UserResponse>(statusCode: StatusCodes.Status200OK)]
     public async Task<IActionResult> RerollSidAsync(string memberRef)
     {
-        var member = await db.ResolveMemberAsync(CurrentUser!.Id, memberRef);
+        Member member = await db.ResolveMemberAsync(CurrentUser!.Id, memberRef);
 
-        var minTimeAgo = clock.GetCurrentInstant() - Duration.FromHours(1);
+        Instant minTimeAgo = clock.GetCurrentInstant() - Duration.FromHours(1);
         if (CurrentUser!.LastSidReroll > minTimeAgo)
             throw new ApiError.BadRequest("Cannot reroll short ID yet");
 
@@ -308,7 +318,10 @@ public class MembersController(
             );
 
         // Fetch the new sid then pass that to RenderMember
-        var newSid = await db.Members.Where(m => m.Id == member.Id).Select(m => m.Sid).FirstAsync();
+        string newSid = await db
+            .Members.Where(m => m.Id == member.Id)
+            .Select(m => m.Sid)
+            .FirstAsync();
         return Ok(memberRenderer.RenderMember(member, CurrentToken, newSid));
     }
 }

Foxnouns.Backend/Controllers/MetaController.cs

@@ -10,9 +10,8 @@ public class MetaController : ApiControllerBase
 
     [HttpGet]
     [ProducesResponseType<MetaResponse>(StatusCodes.Status200OK)]
-    public IActionResult GetMeta()
-    {
-        return Ok(
+    public IActionResult GetMeta() =>
+        Ok(
             new MetaResponse(
                 Repository,
                 BuildInfo.Version,
@@ -25,14 +24,13 @@ public class MetaController : ApiControllerBase
                     (int)FoxnounsMetrics.UsersActiveDayCount.Value
                 ),
                 new Limits(
-                    MemberCount: MembersController.MaxMemberCount,
-                    BioLength: ValidationUtils.MaxBioLength,
-                    CustomPreferences: ValidationUtils.MaxCustomPreferences,
-                    MaxAuthMethods: AuthUtils.MaxAuthMethodsPerType
+                    MembersController.MaxMemberCount,
+                    ValidationUtils.MaxBioLength,
+                    ValidationUtils.MaxCustomPreferences,
+                    AuthUtils.MaxAuthMethodsPerType
                 )
             )
         );
-    }
 
     [HttpGet("/api/v2/coffee")]
     public IActionResult BrewCoffee() =>

Foxnouns.Backend/Controllers/SidController.cs

@@ -24,7 +24,7 @@ public class SidController(Config config, DatabaseContext db) : ApiControllerBas
 
     private async Task<IActionResult> ResolveUserSidAsync(string id, CancellationToken ct = default)
     {
-        var username = await db
+        string? username = await db
             .Users.Where(u => u.Sid == id.ToLowerInvariant() && !u.Deleted)
             .Select(u => u.Username)
             .FirstOrDefaultAsync(ct);

Foxnouns.Backend/Controllers/UsersController.cs

@@ -9,6 +9,7 @@ using Foxnouns.Backend.Services;
 using Foxnouns.Backend.Utils;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Storage;
 using NodaTime;
 
 namespace Foxnouns.Backend.Controllers;
@@ -29,16 +30,9 @@ public class UsersController(
     [ProducesResponseType<UserRendererService.UserResponse>(statusCode: StatusCodes.Status200OK)]
     public async Task<IActionResult> GetUserAsync(string userRef, CancellationToken ct = default)
     {
-        var user = await db.ResolveUserAsync(userRef, CurrentToken, ct);
+        User user = await db.ResolveUserAsync(userRef, CurrentToken, ct);
         return Ok(
-            await userRenderer.RenderUserAsync(
-                user,
-                selfUser: CurrentUser,
-                token: CurrentToken,
-                renderMembers: true,
-                renderAuthMethods: true,
-                ct: ct
-            )
+            await userRenderer.RenderUserAsync(user, CurrentUser, CurrentToken, true, true, ct: ct)
         );
     }
 
@@ -50,8 +44,8 @@ public class UsersController(
         CancellationToken ct = default
     )
     {
-        await using var tx = await db.Database.BeginTransactionAsync(ct);
-        var user = await db.Users.FirstAsync(u => u.Id == CurrentUser!.Id, ct);
+        await using IDbContextTransaction tx = await db.Database.BeginTransactionAsync(ct);
+        User user = await db.Users.FirstAsync(u => u.Id == CurrentUser!.Id, ct);
         var errors = new List<(string, ValidationError?)>();
 
         if (req.Username != null && req.Username != user.Username)
@@ -108,7 +102,7 @@ public class UsersController(
 
         if (req.Flags != null)
         {
-            var flagError = await db.SetUserFlagsAsync(CurrentUser!.Id, req.Flags);
+            ValidationError? flagError = await db.SetUserFlagsAsync(CurrentUser!.Id, req.Flags);
             if (flagError != null)
                 errors.Add(("flags", flagError));
         }
@@ -141,8 +135,11 @@ public class UsersController(
             else
             {
                 if (TimeZoneInfo.TryFindSystemTimeZoneById(req.Timezone, out _))
+                {
                     user.Timezone = req.Timezone;
+                }
                 else
+                {
                     errors.Add(
                         (
                             "timezone",
@@ -151,15 +148,18 @@ public class UsersController(
                     );
                 }
             }
+        }
 
         ValidationUtils.Validate(errors);
         // This is fired off regardless of whether the transaction is committed
         // (atomic operations are hard when combined with background jobs)
         // so it's in a separate block to the validation above.
         if (req.HasProperty(nameof(req.Avatar)))
+        {
             queue.QueueInvocableWithPayload<UserAvatarUpdateInvocable, AvatarUpdatePayload>(
                 new AvatarUpdatePayload(CurrentUser!.Id, req.Avatar)
             );
+        }
 
         try
         {
@@ -176,7 +176,7 @@ public class UsersController(
             throw new ApiError.BadRequest(
                 "That username is already taken.",
                 "username",
-                req.Username!
+                req.Username
             );
         }
 
@@ -202,12 +202,12 @@ public class UsersController(
     {
         ValidationUtils.Validate(ValidationUtils.ValidateCustomPreferences(req));
 
-        var user = await db.ResolveUserAsync(CurrentUser!.Id, ct);
+        User user = await db.ResolveUserAsync(CurrentUser!.Id, ct);
         var preferences = user
             .CustomPreferences.Where(x => req.Any(r => r.Id == x.Key))
             .ToDictionary();
 
-        foreach (var r in req)
+        foreach (CustomPreferenceUpdate? r in req)
         {
             if (r.Id != null && preferences.ContainsKey(r.Id.Value))
             {
@@ -271,7 +271,7 @@ public class UsersController(
     [ProducesResponseType<UserSettings>(statusCode: StatusCodes.Status200OK)]
     public async Task<IActionResult> GetUserSettingsAsync(CancellationToken ct = default)
     {
-        var user = await db.Users.FirstAsync(u => u.Id == CurrentUser!.Id, ct);
+        User user = await db.Users.FirstAsync(u => u.Id == CurrentUser!.Id, ct);
         return Ok(user.Settings);
     }
 
@@ -283,7 +283,7 @@ public class UsersController(
         CancellationToken ct = default
     )
     {
-        var user = await db.Users.FirstAsync(u => u.Id == CurrentUser!.Id, ct);
+        User user = await db.Users.FirstAsync(u => u.Id == CurrentUser!.Id, ct);
 
         if (req.HasProperty(nameof(req.DarkMode)))
             user.Settings.DarkMode = req.DarkMode;
@@ -304,7 +304,7 @@ public class UsersController(
     [ProducesResponseType<UserRendererService.UserResponse>(statusCode: StatusCodes.Status200OK)]
     public async Task<IActionResult> RerollSidAsync()
     {
-        var minTimeAgo = clock.GetCurrentInstant() - Duration.FromHours(1);
+        Instant minTimeAgo = clock.GetCurrentInstant() - Duration.FromHours(1);
         if (CurrentUser!.LastSidReroll > minTimeAgo)
             throw new ApiError.BadRequest("Cannot reroll short ID yet");
 
@@ -318,18 +318,18 @@ public class UsersController(
             );
 
         // Get the user's new sid
-        var newSid = await db
+        string newSid = await db
             .Users.Where(u => u.Id == CurrentUser.Id)
             .Select(u => u.Sid)
             .FirstAsync();
 
-        var user = await db.ResolveUserAsync(CurrentUser.Id);
+        User user = await db.ResolveUserAsync(CurrentUser.Id);
         return Ok(
             await userRenderer.RenderUserAsync(
-                CurrentUser,
+                user,
                 CurrentUser,
                 CurrentToken,
-                renderMembers: false,
+                false,
                 overrideSid: newSid
             )
         );

Foxnouns.Backend/Database/DatabaseContext.cs

@@ -11,9 +11,8 @@ namespace Foxnouns.Backend.Database;
 
 public class DatabaseContext(DbContextOptions options) : DbContext(options)
 {
-    private static string GenerateConnectionString(Config.DatabaseConfig config)
-    {
-        return new NpgsqlConnectionStringBuilder(config.Url)
+    private static string GenerateConnectionString(Config.DatabaseConfig config) =>
+        new NpgsqlConnectionStringBuilder(config.Url)
         {
             Pooling = config.EnablePooling ?? true,
             Timeout = config.Timeout ?? 5,
@@ -22,7 +21,6 @@ public class DatabaseContext(DbContextOptions options) : DbContext(options)
             ConnectionPruningInterval = 10,
             ConnectionIdleLifetime = 10,
         }.ConnectionString;
-    }
 
     public static NpgsqlDataSource BuildDataSource(Config config)
     {
@@ -46,18 +44,18 @@ public class DatabaseContext(DbContextOptions options) : DbContext(options)
             .UseSnakeCaseNamingConvention()
             .UseExceptionProcessor();
 
-    public DbSet<User> Users { get; init; }
-    public DbSet<Member> Members { get; init; }
-    public DbSet<AuthMethod> AuthMethods { get; init; }
-    public DbSet<FediverseApplication> FediverseApplications { get; init; }
-    public DbSet<Token> Tokens { get; init; }
-    public DbSet<Application> Applications { get; init; }
-    public DbSet<TemporaryKey> TemporaryKeys { get; init; }
-    public DbSet<DataExport> DataExports { get; init; }
+    public DbSet<User> Users { get; init; } = null!;
+    public DbSet<Member> Members { get; init; } = null!;
+    public DbSet<AuthMethod> AuthMethods { get; init; } = null!;
+    public DbSet<FediverseApplication> FediverseApplications { get; init; } = null!;
+    public DbSet<Token> Tokens { get; init; } = null!;
+    public DbSet<Application> Applications { get; init; } = null!;
+    public DbSet<TemporaryKey> TemporaryKeys { get; init; } = null!;
+    public DbSet<DataExport> DataExports { get; init; } = null!;
 
-    public DbSet<PrideFlag> PrideFlags { get; init; }
-    public DbSet<UserFlag> UserFlags { get; init; }
-    public DbSet<MemberFlag> MemberFlags { get; init; }
+    public DbSet<PrideFlag> PrideFlags { get; init; } = null!;
+    public DbSet<UserFlag> UserFlags { get; init; } = null!;
+    public DbSet<MemberFlag> MemberFlags { get; init; } = null!;
 
     protected override void ConfigureConventions(ModelConfigurationBuilder configurationBuilder)
     {
@@ -138,16 +136,16 @@ public class DesignTimeDatabaseContextFactory : IDesignTimeDbContextFactory<Data
     public DatabaseContext CreateDbContext(string[] args)
     {
         // Read the configuration file
-        var config =
+        Config config =
             new ConfigurationBuilder()
                 .AddConfiguration()
                 .Build()
                 // Get the configuration as our config class
-                .Get<Config>() ?? new();
+                .Get<Config>() ?? new Config();
 
-        var dataSource = DatabaseContext.BuildDataSource(config);
+        NpgsqlDataSource dataSource = DatabaseContext.BuildDataSource(config);
 
-        var options = DatabaseContext
+        DbContextOptions options = DatabaseContext
             .BuildOptions(new DbContextOptionsBuilder(), dataSource, null)
             .Options;
 

Foxnouns.Backend/Database/DatabaseQueryExtensions.cs

@@ -26,7 +26,7 @@ public static class DatabaseQueryExtensions
         }
 
         User? user;
-        if (Snowflake.TryParse(userRef, out var snowflake))
+        if (Snowflake.TryParse(userRef, out Snowflake? snowflake))
         {
             user = await context
                 .Users.Where(u => !u.Deleted)
@@ -42,7 +42,7 @@ public static class DatabaseQueryExtensions
             return user;
         throw new ApiError.NotFound(
             "No user with that ID or username found.",
-            code: ErrorCode.UserNotFound
+            ErrorCode.UserNotFound
         );
     }
 
@@ -52,12 +52,12 @@ public static class DatabaseQueryExtensions
         CancellationToken ct = default
     )
     {
-        var user = await context
+        User? user = await context
             .Users.Where(u => !u.Deleted)
             .FirstOrDefaultAsync(u => u.Id == id, ct);
         if (user != null)
             return user;
-        throw new ApiError.NotFound("No user with that ID found.", code: ErrorCode.UserNotFound);
+        throw new ApiError.NotFound("No user with that ID found.", ErrorCode.UserNotFound);
     }
 
     public static async Task<Member> ResolveMemberAsync(
@@ -66,16 +66,13 @@ public static class DatabaseQueryExtensions
         CancellationToken ct = default
     )
     {
-        var member = await context
+        Member? member = await context
             .Members.Include(m => m.User)
             .Where(m => !m.User.Deleted)
             .FirstOrDefaultAsync(m => m.Id == id, ct);
         if (member != null)
             return member;
-        throw new ApiError.NotFound(
-            "No member with that ID found.",
-            code: ErrorCode.MemberNotFound
-        );
+        throw new ApiError.NotFound("No member with that ID found.", ErrorCode.MemberNotFound);
     }
 
     public static async Task<Member> ResolveMemberAsync(
@@ -86,7 +83,7 @@ public static class DatabaseQueryExtensions
         CancellationToken ct = default
     )
     {
-        var user = await context.ResolveUserAsync(userRef, token, ct);
+        User user = await context.ResolveUserAsync(userRef, token, ct);
         return await context.ResolveMemberAsync(user.Id, memberRef, ct);
     }
 
@@ -98,7 +95,7 @@ public static class DatabaseQueryExtensions
     )
     {
         Member? member;
-        if (Snowflake.TryParse(memberRef, out var snowflake))
+        if (Snowflake.TryParse(memberRef, out Snowflake? snowflake))
         {
             member = await context
                 .Members.Include(m => m.User)
@@ -118,7 +115,7 @@ public static class DatabaseQueryExtensions
             return member;
         throw new ApiError.NotFound(
             "No member with that ID or name found.",
-            code: ErrorCode.MemberNotFound
+            ErrorCode.MemberNotFound
         );
     }
 
@@ -127,7 +124,10 @@ public static class DatabaseQueryExtensions
         CancellationToken ct = default
     )
     {
-        var app = await context.Applications.FirstOrDefaultAsync(a => a.Id == new Snowflake(0), ct);
+        Application? app = await context.Applications.FirstOrDefaultAsync(
+            a => a.Id == new Snowflake(0),
+            ct
+        );
         if (app != null)
             return app;
 
@@ -152,9 +152,9 @@ public static class DatabaseQueryExtensions
         CancellationToken ct = default
     )
     {
-        var hash = SHA512.HashData(rawToken);
+        byte[] hash = SHA512.HashData(rawToken);
 
-        var oauthToken = await context
+        Token? oauthToken = await context
             .Tokens.Include(t => t.Application)
             .Include(t => t.User)
             .FirstOrDefaultAsync(
@@ -174,7 +174,7 @@ public static class DatabaseQueryExtensions
         CancellationToken ct = default
     )
     {
-        var hash = SHA512.HashData(rawToken);
+        byte[] hash = SHA512.HashData(rawToken);
         return await context
             .Tokens.Where(t =>
                 t.Hash == hash

Foxnouns.Backend/Database/DatabaseServiceExtensions.cs

@@ -1,3 +1,4 @@
+using Npgsql;
 using Serilog;
 
 namespace Foxnouns.Backend.Database;
@@ -9,8 +10,8 @@ public static class DatabaseServiceExtensions
         Config config
     )
     {
-        var dataSource = DatabaseContext.BuildDataSource(config);
-        var loggerFactory = new LoggerFactory().AddSerilog(dispose: false);
+        NpgsqlDataSource dataSource = DatabaseContext.BuildDataSource(config);
+        ILoggerFactory loggerFactory = new LoggerFactory().AddSerilog(dispose: false);
 
         serviceCollection.AddDbContext<DatabaseContext>(options =>
             DatabaseContext.BuildOptions(options, dataSource, loggerFactory)

Foxnouns.Backend/Database/FlagQueryExtensions.cs

@@ -20,8 +20,10 @@ public static class FlagQueryExtensions
         Snowflake[] flagIds
     )
     {
-        var currentFlags = await db.UserFlags.Where(f => f.UserId == userId).ToListAsync();
-        foreach (var flag in currentFlags)
+        List<UserFlag> currentFlags = await db
+            .UserFlags.Where(f => f.UserId == userId)
+            .ToListAsync();
+        foreach (UserFlag flag in currentFlags)
             db.UserFlags.Remove(flag);
 
         // If there's no new flags to set, we're done
@@ -30,12 +32,16 @@ public static class FlagQueryExtensions
         if (flagIds.Length > 100)
             return ValidationError.LengthError("Too many profile flags", 0, 100, flagIds.Length);
 
-        var flags = await db.GetFlagsAsync(userId);
-        var unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
+        List<PrideFlag> flags = await db.GetFlagsAsync(userId);
+        Snowflake[] unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
         if (unknownFlagIds.Length != 0)
             return ValidationError.GenericValidationError("Unknown flag IDs", unknownFlagIds);
 
-        var userFlags = flagIds.Select(id => new UserFlag { PrideFlagId = id, UserId = userId });
+        IEnumerable<UserFlag> userFlags = flagIds.Select(id => new UserFlag
+        {
+            PrideFlagId = id,
+            UserId = userId,
+        });
         db.UserFlags.AddRange(userFlags);
 
         return null;
@@ -48,8 +54,10 @@ public static class FlagQueryExtensions
         Snowflake[] flagIds
     )
     {
-        var currentFlags = await db.MemberFlags.Where(f => f.MemberId == memberId).ToListAsync();
-        foreach (var flag in currentFlags)
+        List<MemberFlag> currentFlags = await db
+            .MemberFlags.Where(f => f.MemberId == memberId)
+            .ToListAsync();
+        foreach (MemberFlag flag in currentFlags)
             db.MemberFlags.Remove(flag);
 
         if (flagIds.Length == 0)
@@ -57,12 +65,12 @@ public static class FlagQueryExtensions
         if (flagIds.Length > 100)
             return ValidationError.LengthError("Too many profile flags", 0, 100, flagIds.Length);
 
-        var flags = await db.GetFlagsAsync(userId);
-        var unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
+        List<PrideFlag> flags = await db.GetFlagsAsync(userId);
+        Snowflake[] unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
         if (unknownFlagIds.Length != 0)
             return ValidationError.GenericValidationError("Unknown flag IDs", unknownFlagIds);
 
-        var memberFlags = flagIds.Select(id => new MemberFlag
+        IEnumerable<MemberFlag> memberFlags = flagIds.Select(id => new MemberFlag
         {
             PrideFlagId = id,
             MemberId = memberId,

Foxnouns.Backend/Database/Migrations/20240527132444_Init.cs

@@ -24,10 +24,7 @@ namespace Foxnouns.Backend.Database.Migrations
                     client_secret = table.Column<string>(type: "text", nullable: false),
                     instance_type = table.Column<int>(type: "integer", nullable: false),
                 },
-                constraints: table =>
-                {
-                    table.PrimaryKey("pk_fediverse_applications", x => x.id);
-                }
+                constraints: table => table.PrimaryKey("pk_fediverse_applications", x => x.id)
             );
 
             migrationBuilder.CreateTable(
@@ -46,10 +43,7 @@ namespace Foxnouns.Backend.Database.Migrations
                     names = table.Column<string>(type: "jsonb", nullable: false),
                     pronouns = table.Column<string>(type: "jsonb", nullable: false),
                 },
-                constraints: table =>
-                {
-                    table.PrimaryKey("pk_users", x => x.id);
-                }
+                constraints: table => table.PrimaryKey("pk_users", x => x.id)
             );
 
             migrationBuilder.CreateTable(

Foxnouns.Backend/Database/Migrations/20240528125310_AddApplications.cs

@@ -26,7 +26,7 @@ namespace Foxnouns.Backend.Database.Migrations
                 table: "tokens",
                 type: "bytea",
                 nullable: false,
-                defaultValue: new byte[0]
+                defaultValue: Array.Empty<byte>()
             );
 
             migrationBuilder.CreateTable(
@@ -40,10 +40,7 @@ namespace Foxnouns.Backend.Database.Migrations
                     scopes = table.Column<string[]>(type: "text[]", nullable: false),
                     redirect_uris = table.Column<string[]>(type: "text[]", nullable: false),
                 },
-                constraints: table =>
-                {
-                    table.PrimaryKey("pk_applications", x => x.id);
-                }
+                constraints: table => table.PrimaryKey("pk_applications", x => x.id)
             );
 
             migrationBuilder.CreateIndex(

Foxnouns.Backend/Database/Migrations/20240611225328_AddTemporaryKeyCache.cs

@@ -32,10 +32,7 @@ namespace Foxnouns.Backend.Database.Migrations
                         nullable: false
                     ),
                 },
-                constraints: table =>
-                {
-                    table.PrimaryKey("pk_temporary_keys", x => x.id);
-                }
+                constraints: table => table.PrimaryKey("pk_temporary_keys", x => x.id)
             );
 
             migrationBuilder.CreateIndex(

Foxnouns.Backend/Database/Models/Application.cs

@@ -18,8 +18,8 @@ public class Application : BaseModel
         string[] redirectUrls
     )
     {
-        var clientId = RandomNumberGenerator.GetHexString(32, true);
-        var clientSecret = AuthUtils.RandomToken();
+        string clientId = RandomNumberGenerator.GetHexString(32, true);
+        string clientSecret = AuthUtils.RandomToken();
 
         if (scopes.Except(AuthUtils.ApplicationScopes).Any())
         {

Foxnouns.Backend/Database/Snowflake.cs

@@ -59,7 +59,7 @@ public readonly struct Snowflake(ulong value) : IEquatable<Snowflake>
     public static bool TryParse(string input, [NotNullWhen(true)] out Snowflake? snowflake)
     {
         snowflake = null;
-        if (!ulong.TryParse(input, out var res))
+        if (!ulong.TryParse(input, out ulong res))
             return false;
         snowflake = new Snowflake(res);
         return true;
@@ -70,10 +70,7 @@ public readonly struct Snowflake(ulong value) : IEquatable<Snowflake>
 
     public override bool Equals(object? obj) => obj is Snowflake other && Value == other.Value;
 
-    public bool Equals(Snowflake other)
-    {
-        return Value == other.Value;
-    }
+    public bool Equals(Snowflake other) => Value == other.Value;
 
     public override int GetHashCode() => Value.GetHashCode();
 
@@ -83,11 +80,7 @@ public readonly struct Snowflake(ulong value) : IEquatable<Snowflake>
     /// An Entity Framework ValueConverter for Snowflakes to longs.
     /// </summary>
     // ReSharper disable once ClassNeverInstantiated.Global
-    public class ValueConverter()
-        : ValueConverter<Snowflake, long>(
-            convertToProviderExpression: x => x,
-            convertFromProviderExpression: x => x
-        );
+    public class ValueConverter() : ValueConverter<Snowflake, long>(x => x, x => x);
 
     private class JsonConverter : JsonConverter<Snowflake>
     {
@@ -106,10 +99,7 @@ public readonly struct Snowflake(ulong value) : IEquatable<Snowflake>
             Snowflake existingValue,
             bool hasExistingValue,
             JsonSerializer serializer
-        )
-        {
-            return ulong.Parse((string)reader.Value!);
-        }
+        ) => ulong.Parse((string)reader.Value!);
     }
 
     private class TypeConverter : System.ComponentModel.TypeConverter
@@ -126,9 +116,6 @@ public readonly struct Snowflake(ulong value) : IEquatable<Snowflake>
             ITypeDescriptorContext? context,
             CultureInfo? culture,
             object value
-        )
-        {
-            return TryParse((string)value, out var snowflake) ? snowflake : null;
-        }
+        ) => TryParse((string)value, out Snowflake? snowflake) ? snowflake : null;
     }
 }

Foxnouns.Backend/Database/SnowflakeGenerator.cs

@@ -28,9 +28,9 @@ public class SnowflakeGenerator : ISnowflakeGenerator
     public Snowflake GenerateSnowflake(Instant? time = null)
     {
         time ??= SystemClock.Instance.GetCurrentInstant();
-        var increment = Interlocked.Increment(ref _increment);
-        var threadId = Environment.CurrentManagedThreadId % 32;
-        var timestamp = time.Value.ToUnixTimeMilliseconds() - Snowflake.Epoch;
+        long increment = Interlocked.Increment(ref _increment);
+        int threadId = Environment.CurrentManagedThreadId % 32;
+        long timestamp = time.Value.ToUnixTimeMilliseconds() - Snowflake.Epoch;
 
         return (timestamp << 22)
             | (uint)(_processId << 17)
@@ -44,8 +44,5 @@ public static class SnowflakeGeneratorServiceExtensions
     public static IServiceCollection AddSnowflakeGenerator(
         this IServiceCollection services,
         int? processId = null
-    )
-    {
-        return services.AddSingleton<ISnowflakeGenerator>(new SnowflakeGenerator(processId));
-    }
+    ) => services.AddSingleton<ISnowflakeGenerator>(new SnowflakeGenerator(processId));
 }

Foxnouns.Backend/ExpectedError.cs

@@ -35,13 +35,13 @@ public class ApiError(
     public readonly ErrorCode ErrorCode = errorCode ?? ErrorCode.InternalServerError;
 
     public class Unauthorized(string message, ErrorCode errorCode = ErrorCode.AuthenticationError)
-        : ApiError(message, statusCode: HttpStatusCode.Unauthorized, errorCode: errorCode);
+        : ApiError(message, HttpStatusCode.Unauthorized, errorCode);
 
     public class Forbidden(
         string message,
         IEnumerable<string>? scopes = null,
         ErrorCode errorCode = ErrorCode.Forbidden
-    ) : ApiError(message, statusCode: HttpStatusCode.Forbidden, errorCode: errorCode)
+    ) : ApiError(message, HttpStatusCode.Forbidden, errorCode)
     {
         public readonly string[] Scopes = scopes?.ToArray() ?? [];
     }
@@ -49,7 +49,7 @@ public class ApiError(
     public class BadRequest(
         string message,
         IReadOnlyDictionary<string, IEnumerable<ValidationError>>? errors = null
-    ) : ApiError(message, statusCode: HttpStatusCode.BadRequest)
+    ) : ApiError(message, HttpStatusCode.BadRequest)
     {
         public BadRequest(string message, string field, object? actualValue)
             : this(
@@ -72,7 +72,7 @@ public class ApiError(
                 return o;
 
             var a = new JArray();
-            foreach (var error in errors)
+            foreach (KeyValuePair<string, IEnumerable<ValidationError>> error in errors)
             {
                 var errorObj = new JObject
                 {
@@ -92,7 +92,7 @@ public class ApiError(
     /// Any other methods should use <see cref="ApiError.BadRequest" /> instead.
     /// </summary>
     public class AspBadRequest(string message, ModelStateDictionary? modelState = null)
-        : ApiError(message, statusCode: HttpStatusCode.BadRequest)
+        : ApiError(message, HttpStatusCode.BadRequest)
     {
         public JObject ToJson()
         {
@@ -106,7 +106,11 @@ public class ApiError(
                 return o;
 
             var a = new JArray();
-            foreach (var error in modelState.Where(e => e.Value is { Errors.Count: > 0 }))
+            foreach (
+                KeyValuePair<string, ModelStateEntry?> error in modelState.Where(e =>
+                    e.Value is { Errors.Count: > 0 }
+                )
+            )
             {
                 var errorObj = new JObject
                 {
@@ -130,10 +134,9 @@ public class ApiError(
     }
 
     public class NotFound(string message, ErrorCode? code = null)
-        : ApiError(message, statusCode: HttpStatusCode.NotFound, errorCode: code);
+        : ApiError(message, HttpStatusCode.NotFound, code);
 
-    public class AuthenticationError(string message)
-        : ApiError(message, statusCode: HttpStatusCode.BadRequest);
+    public class AuthenticationError(string message) : ApiError(message, HttpStatusCode.BadRequest);
 }
 
 public enum ErrorCode
@@ -175,33 +178,27 @@ public class ValidationError
         int minLength,
         int maxLength,
         int actualLength
-    )
-    {
-        return new ValidationError
+    ) =>
+        new()
         {
             Message = message,
             MinLength = minLength,
             MaxLength = maxLength,
             ActualLength = actualLength,
         };
-    }
 
     public static ValidationError DisallowedValueError(
         string message,
         IEnumerable<object> allowedValues,
         object actualValue
-    )
-    {
-        return new ValidationError
+    ) =>
+        new()
         {
             Message = message,
             AllowedValues = allowedValues,
             ActualValue = actualValue,
         };
-    }
 
-    public static ValidationError GenericValidationError(string message, object? actualValue)
-    {
-        return new ValidationError { Message = message, ActualValue = actualValue };
-    }
+    public static ValidationError GenericValidationError(string message, object? actualValue) =>
+        new() { Message = message, ActualValue = actualValue };
 }

Foxnouns.Backend/Extensions/ImageObjectExtensions.cs

@@ -47,13 +47,13 @@ public static class ImageObjectExtensions
         if (!uri.StartsWith("data:image/"))
             throw new ArgumentException("Not a data URI", nameof(uri));
 
-        var split = uri.Remove(0, "data:".Length).Split(";base64,");
-        var contentType = split[0];
-        var encoded = split[1];
+        string[] split = uri.Remove(0, "data:".Length).Split(";base64,");
+        string contentType = split[0];
+        string encoded = split[1];
         if (!ValidContentTypes.Contains(contentType))
             throw new ArgumentException("Invalid content type for image", nameof(uri));
 
-        if (!AuthUtils.TryFromBase64String(encoded, out var rawImage))
+        if (!AuthUtils.TryFromBase64String(encoded, out byte[]? rawImage))
             throw new ArgumentException("Invalid base64 string", nameof(uri));
 
         var image = Image.Load(rawImage);
@@ -74,7 +74,7 @@ public static class ImageObjectExtensions
         await image.SaveAsync(stream, new WebpEncoder { Quality = 95, NearLossless = false });
 
         stream.Seek(0, SeekOrigin.Begin);
-        var hash = Convert.ToHexString(await SHA256.HashDataAsync(stream)).ToLower();
+        string hash = Convert.ToHexString(await SHA256.HashDataAsync(stream)).ToLower();
         stream.Seek(0, SeekOrigin.Begin);
 
         return (hash, stream);

Foxnouns.Backend/Extensions/KeyCacheExtensions.cs

@@ -14,7 +14,7 @@ public static class KeyCacheExtensions
         CancellationToken ct = default
     )
     {
-        var state = AuthUtils.RandomToken().Replace('+', '-').Replace('/', '_');
+        string state = AuthUtils.RandomToken().Replace('+', '-').Replace('/', '_');
         await keyCacheService.SetKeyAsync($"oauth_state:{state}", "", Duration.FromMinutes(10), ct);
         return state;
     }
@@ -25,7 +25,7 @@ public static class KeyCacheExtensions
         CancellationToken ct = default
     )
     {
-        var val = await keyCacheService.GetKeyAsync($"oauth_state:{state}", delete: true, ct);
+        string? val = await keyCacheService.GetKeyAsync($"oauth_state:{state}", ct: ct);
         if (val == null)
             throw new ApiError.BadRequest("Invalid OAuth state");
     }
@@ -38,7 +38,7 @@ public static class KeyCacheExtensions
     )
     {
         // This state is used in links, not just as JSON values, so make it URL-safe
-        var state = AuthUtils.RandomToken().Replace('+', '-').Replace('/', '_');
+        string state = AuthUtils.RandomToken().Replace('+', '-').Replace('/', '_');
         await keyCacheService.SetKeyAsync(
             $"email_state:{state}",
             new RegisterEmailState(email, userId),
@@ -52,12 +52,7 @@ public static class KeyCacheExtensions
         this KeyCacheService keyCacheService,
         string state,
         CancellationToken ct = default
-    ) =>
-        await keyCacheService.GetKeyAsync<RegisterEmailState>(
-            $"email_state:{state}",
-            delete: true,
-            ct
-        );
+    ) => await keyCacheService.GetKeyAsync<RegisterEmailState>($"email_state:{state}", ct: ct);
 
     public static async Task<string> GenerateAddExtraAccountStateAsync(
         this KeyCacheService keyCacheService,
@@ -67,7 +62,7 @@ public static class KeyCacheExtensions
         CancellationToken ct = default
     )
     {
-        var state = AuthUtils.RandomToken();
+        string state = AuthUtils.RandomToken();
         await keyCacheService.SetKeyAsync(
             $"add_account:{state}",
             new AddExtraAccountState(authType, userId, instance),
@@ -81,12 +76,7 @@ public static class KeyCacheExtensions
         this KeyCacheService keyCacheService,
         string state,
         CancellationToken ct = default
-    ) =>
-        await keyCacheService.GetKeyAsync<AddExtraAccountState>(
-            $"add_account:{state}",
-            delete: true,
-            ct
-        );
+    ) => await keyCacheService.GetKeyAsync<AddExtraAccountState>($"add_account:{state}", true, ct);
 }
 
 public record RegisterEmailState(

Foxnouns.Backend/Extensions/WebApplicationExtensions.cs

@@ -24,9 +24,9 @@ public static class WebApplicationExtensions
     /// </summary>
     public static WebApplicationBuilder AddSerilog(this WebApplicationBuilder builder)
     {
-        var config = builder.Configuration.Get<Config>() ?? new();
+        Config config = builder.Configuration.Get<Config>() ?? new Config();
 
-        var logCfg = new LoggerConfiguration()
+        LoggerConfiguration logCfg = new LoggerConfiguration()
             .Enrich.FromLogContext()
             .MinimumLevel.Is(config.Logging.LogEventLevel)
             // ASP.NET's built in request logs are extremely verbose, so we use Serilog's instead.
@@ -43,10 +43,7 @@ public static class WebApplicationExtensions
 
         if (config.Logging.SeqLogUrl != null)
         {
-            logCfg.WriteTo.Seq(
-                config.Logging.SeqLogUrl,
-                restrictedToMinimumLevel: LogEventLevel.Verbose
-            );
+            logCfg.WriteTo.Seq(config.Logging.SeqLogUrl, LogEventLevel.Verbose);
         }
 
         // AddSerilog doesn't seem to add an ILogger to the service collection, so add that manually.
@@ -60,19 +57,19 @@ public static class WebApplicationExtensions
         builder.Configuration.Sources.Clear();
         builder.Configuration.AddConfiguration();
 
-        var config = builder.Configuration.Get<Config>() ?? new();
+        Config config = builder.Configuration.Get<Config>() ?? new Config();
         builder.Services.AddSingleton(config);
         return config;
     }
 
     public static IConfigurationBuilder AddConfiguration(this IConfigurationBuilder builder)
     {
-        var file = Environment.GetEnvironmentVariable("FOXNOUNS_CONFIG_FILE") ?? "config.ini";
+        string file = Environment.GetEnvironmentVariable("FOXNOUNS_CONFIG_FILE") ?? "config.ini";
 
         return builder
             .SetBasePath(Directory.GetCurrentDirectory())
             .AddJsonFile("appSettings.json", true)
-            .AddIniFile(file, optional: false, reloadOnChange: true)
+            .AddIniFile(file, false, true)
             .AddEnvironmentVariables();
     }
 
@@ -142,11 +139,15 @@ public static class WebApplicationExtensions
         app.Services.ConfigureQueue()
             .LogQueuedTaskProgress(app.Services.GetRequiredService<ILogger<IQueue>>());
 
-        await using var scope = app.Services.CreateAsyncScope();
+        await using AsyncServiceScope scope = app.Services.CreateAsyncScope();
+
+        // The types of these variables are obvious from the methods being called to create them
+        // ReSharper disable SuggestVarOrType_SimpleTypes
         var logger = scope
             .ServiceProvider.GetRequiredService<ILogger>()
             .ForContext<WebApplication>();
         var db = scope.ServiceProvider.GetRequiredService<DatabaseContext>();
+        // ReSharper restore SuggestVarOrType_SimpleTypes
 
         logger.Information(
             "Starting Foxnouns.NET {Version} ({Hash})",

Foxnouns.Backend/Foxnouns.Backend.csproj

@@ -30,6 +30,10 @@
         <PackageReference Include="Npgsql.Json.NET" Version="8.0.3"/>
         <PackageReference Include="prometheus-net" Version="8.2.1"/>
         <PackageReference Include="prometheus-net.AspNetCore" Version="8.2.1"/>
+        <PackageReference Include="Roslynator.Analyzers" Version="4.12.9">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
         <PackageReference Include="Sentry.AspNetCore" Version="4.9.0"/>
         <PackageReference Include="Serilog" Version="4.0.1"/>
         <PackageReference Include="Serilog.AspNetCore" Version="8.0.1"/>

Foxnouns.Backend/Jobs/CreateDataExportInvocable.cs

@@ -40,7 +40,7 @@ public class CreateDataExportInvocable(
 
     private async Task InvokeAsync()
     {
-        var user = await db
+        User? user = await db
             .Users.Include(u => u.AuthMethods)
             .Include(u => u.Flags)
             .Include(u => u.ProfileFlags)
@@ -57,7 +57,7 @@ public class CreateDataExportInvocable(
 
         _logger.Information("Generating data export for user {UserId}", user.Id);
 
-        using var stream = new MemoryStream();
+        await using var stream = new MemoryStream();
         using var zip = new ZipArchive(stream, ZipArchiveMode.Create, true);
         zip.Comment =
             $"This archive for {user.Username} ({user.Id}) was generated at  {InstantPattern.General.Format(clock.GetCurrentInstant())}";
@@ -66,25 +66,19 @@ public class CreateDataExportInvocable(
         WriteJson(
             zip,
             "user.json",
-            await userRenderer.RenderUserInnerAsync(
-                user,
-                true,
-                ["*"],
-                renderMembers: false,
-                renderAuthMethods: true
-            )
+            await userRenderer.RenderUserInnerAsync(user, true, ["*"], false, true)
         );
         await WriteS3Object(zip, "user-avatar.webp", userRenderer.AvatarUrlFor(user));
 
-        foreach (var flag in user.Flags)
+        foreach (PrideFlag? flag in user.Flags)
             await WritePrideFlag(zip, flag);
 
-        var members = await db
+        List<Member> members = await db
             .Members.Include(m => m.User)
             .Include(m => m.ProfileFlags)
             .Where(m => m.UserId == user.Id)
             .ToListAsync();
-        foreach (var member in members)
+        foreach (Member? member in members)
             await WriteMember(zip, member);
 
         // We want to dispose the ZipArchive on an error, but we need to dispose it manually to upload to object storage.
@@ -94,7 +88,7 @@ public class CreateDataExportInvocable(
         stream.Seek(0, SeekOrigin.Begin);
 
         // Upload the file!
-        var filename = AuthUtils.RandomToken().Replace('+', '-').Replace('/', '_');
+        string filename = AuthUtils.RandomToken().Replace('+', '-').Replace('/', '_');
         await objectStorageService.PutObjectAsync(
             ExportPath(user.Id, filename),
             stream,
@@ -132,8 +126,8 @@ public class CreateDataExportInvocable(
             return;
         }
 
-        var entry = zip.CreateEntry($"flag-{flag.Id}/flag.txt");
-        await using var stream = entry.Open();
+        ZipArchiveEntry entry = zip.CreateEntry($"flag-{flag.Id}/flag.txt");
+        await using Stream stream = entry.Open();
         await using var writer = new StreamWriter(stream);
         await writer.WriteAsync(flagData);
     }
@@ -164,7 +158,7 @@ public class CreateDataExportInvocable(
 
     private void WriteJson(ZipArchive zip, string filename, object data)
     {
-        var json = JsonConvert.SerializeObject(data, Formatting.Indented);
+        string json = JsonConvert.SerializeObject(data, Formatting.Indented);
 
         _logger.Debug(
             "Writing file {Filename} to archive with size {Length}",
@@ -172,8 +166,8 @@ public class CreateDataExportInvocable(
             json.Length
         );
 
-        var entry = zip.CreateEntry(filename);
-        using var stream = entry.Open();
+        ZipArchiveEntry entry = zip.CreateEntry(filename);
+        using Stream stream = entry.Open();
         using var writer = new StreamWriter(stream);
         writer.Write(json);
     }
@@ -183,14 +177,14 @@ public class CreateDataExportInvocable(
         if (s3Path == null)
             return;
 
-        var resp = await Client.GetAsync(s3Path);
+        HttpResponseMessage resp = await Client.GetAsync(s3Path);
         if (resp.StatusCode != HttpStatusCode.OK)
         {
             _logger.Warning("S3 path {S3Path} returned a non-200 status, not saving file", s3Path);
             return;
         }
 
-        await using var respStream = await resp.Content.ReadAsStreamAsync();
+        await using Stream respStream = await resp.Content.ReadAsStreamAsync();
 
         _logger.Debug(
             "Writing file {Filename} to archive with size {Length}",
@@ -198,8 +192,8 @@ public class CreateDataExportInvocable(
             respStream.Length
         );
 
-        var entry = zip.CreateEntry(filename);
-        await using var entryStream = entry.Open();
+        ZipArchiveEntry entry = zip.CreateEntry(filename);
+        await using Stream entryStream = entry.Open();
 
         respStream.Seek(0, SeekOrigin.Begin);
         await respStream.CopyToAsync(entryStream);

Foxnouns.Backend/Jobs/CreateFlagInvocable.cs

@@ -26,10 +26,10 @@ public class CreateFlagInvocable(
 
         try
         {
-            var (hash, image) = await ImageObjectExtensions.ConvertBase64UriToImage(
+            (string? hash, Stream? image) = await ImageObjectExtensions.ConvertBase64UriToImage(
                 Payload.ImageData,
-                size: 256,
-                crop: false
+                256,
+                false
             );
             await objectStorageService.PutObjectAsync(Path(hash), image, "image/webp");
 

Foxnouns.Backend/Jobs/MemberAvatarUpdateInvocable.cs

@@ -1,5 +1,6 @@
 using Coravel.Invocable;
 using Foxnouns.Backend.Database;
+using Foxnouns.Backend.Database.Models;
 using Foxnouns.Backend.Extensions;
 using Foxnouns.Backend.Services;
 
@@ -26,7 +27,7 @@ public class MemberAvatarUpdateInvocable(
     {
         _logger.Debug("Updating avatar for member {MemberId}", id);
 
-        var member = await db.Members.FindAsync(id);
+        Member? member = await db.Members.FindAsync(id);
         if (member == null)
         {
             _logger.Warning(
@@ -38,12 +39,12 @@ public class MemberAvatarUpdateInvocable(
 
         try
         {
-            var (hash, image) = await ImageObjectExtensions.ConvertBase64UriToImage(
+            (string? hash, Stream? image) = await ImageObjectExtensions.ConvertBase64UriToImage(
                 newAvatar,
-                size: 512,
-                crop: true
+                512,
+                true
             );
-            var prevHash = member.Avatar;
+            string? prevHash = member.Avatar;
 
             await objectStorageService.PutObjectAsync(Path(id, hash), image, "image/webp");
 
@@ -69,7 +70,7 @@ public class MemberAvatarUpdateInvocable(
     {
         _logger.Debug("Clearing avatar for member {MemberId}", id);
 
-        var member = await db.Members.FindAsync(id);
+        Member? member = await db.Members.FindAsync(id);
         if (member == null)
         {
             _logger.Warning(

Foxnouns.Backend/Jobs/UserAvatarUpdateInvocable.cs

@@ -1,5 +1,6 @@
 using Coravel.Invocable;
 using Foxnouns.Backend.Database;
+using Foxnouns.Backend.Database.Models;
 using Foxnouns.Backend.Extensions;
 using Foxnouns.Backend.Services;
 
@@ -26,7 +27,7 @@ public class UserAvatarUpdateInvocable(
     {
         _logger.Debug("Updating avatar for user {MemberId}", id);
 
-        var user = await db.Users.FindAsync(id);
+        User? user = await db.Users.FindAsync(id);
         if (user == null)
         {
             _logger.Warning(
@@ -38,13 +39,13 @@ public class UserAvatarUpdateInvocable(
 
         try
         {
-            var (hash, image) = await ImageObjectExtensions.ConvertBase64UriToImage(
+            (string? hash, Stream? image) = await ImageObjectExtensions.ConvertBase64UriToImage(
                 newAvatar,
-                size: 512,
-                crop: true
+                512,
+                true
             );
             image.Seek(0, SeekOrigin.Begin);
-            var prevHash = user.Avatar;
+            string? prevHash = user.Avatar;
 
             await objectStorageService.PutObjectAsync(Path(id, hash), image, "image/webp");
 
@@ -70,7 +71,7 @@ public class UserAvatarUpdateInvocable(
     {
         _logger.Debug("Clearing avatar for user {MemberId}", id);
 
-        var user = await db.Users.FindAsync(id);
+        User? user = await db.Users.FindAsync(id);
         if (user == null)
         {
             _logger.Warning(

Foxnouns.Backend/Middleware/AuthenticationMiddleware.cs

@@ -8,8 +8,8 @@ public class AuthenticationMiddleware(DatabaseContext db) : IMiddleware
 {
     public async Task InvokeAsync(HttpContext ctx, RequestDelegate next)
     {
-        var endpoint = ctx.GetEndpoint();
-        var metadata = endpoint?.Metadata.GetMetadata<AuthenticateAttribute>();
+        Endpoint? endpoint = ctx.GetEndpoint();
+        AuthenticateAttribute? metadata = endpoint?.Metadata.GetMetadata<AuthenticateAttribute>();
 
         if (metadata == null)
         {
@@ -18,14 +18,17 @@ public class AuthenticationMiddleware(DatabaseContext db) : IMiddleware
         }
 
         if (
-            !AuthUtils.TryParseToken(ctx.Request.Headers.Authorization.ToString(), out var rawToken)
+            !AuthUtils.TryParseToken(
+                ctx.Request.Headers.Authorization.ToString(),
+                out byte[]? rawToken
+            )
         )
         {
             await next(ctx);
             return;
         }
 
-        var oauthToken = await db.GetToken(rawToken);
+        Token? oauthToken = await db.GetToken(rawToken);
         if (oauthToken == null)
         {
             await next(ctx);
@@ -50,7 +53,7 @@ public static class HttpContextExtensions
 
     public static Token? GetToken(this HttpContext ctx)
     {
-        if (ctx.Items.TryGetValue(Key, out var token))
+        if (ctx.Items.TryGetValue(Key, out object? token))
             return token as Token;
         return null;
     }

Foxnouns.Backend/Middleware/AuthorizationMiddleware.cs

@@ -7,8 +7,8 @@ public class AuthorizationMiddleware : IMiddleware
 {
     public async Task InvokeAsync(HttpContext ctx, RequestDelegate next)
     {
-        var endpoint = ctx.GetEndpoint();
-        var attribute = endpoint?.Metadata.GetMetadata<AuthorizeAttribute>();
+        Endpoint? endpoint = ctx.GetEndpoint();
+        AuthorizeAttribute? attribute = endpoint?.Metadata.GetMetadata<AuthorizeAttribute>();
 
         if (attribute == null)
         {
@@ -16,21 +16,27 @@ public class AuthorizationMiddleware : IMiddleware
             return;
         }
 
-        var token = ctx.GetToken();
+        Token? token = ctx.GetToken();
         if (token == null)
+        {
             throw new ApiError.Unauthorized(
                 "This endpoint requires an authenticated user.",
                 ErrorCode.AuthenticationRequired
             );
+        }
+
         if (
             attribute.Scopes.Length > 0
             && attribute.Scopes.Except(token.Scopes.ExpandScopes()).Any()
         )
+        {
             throw new ApiError.Forbidden(
                 "This endpoint requires ungranted scopes.",
                 attribute.Scopes.Except(token.Scopes.ExpandScopes()),
                 ErrorCode.MissingScopes
             );
+        }
+
         if (attribute.RequireAdmin && token.User.Role != UserRole.Admin)
             throw new ApiError.Forbidden("This endpoint can only be used by admins.");
         if (
@@ -38,7 +44,9 @@ public class AuthorizationMiddleware : IMiddleware
             && token.User.Role != UserRole.Admin
             && token.User.Role != UserRole.Moderator
         )
+        {
             throw new ApiError.Forbidden("This endpoint can only be used by moderators.");
+        }
 
         await next(ctx);
     }

Foxnouns.Backend/Middleware/ErrorHandlerMiddleware.cs

@@ -1,4 +1,5 @@
 using System.Net;
+using Foxnouns.Backend.Database.Models;
 using Foxnouns.Backend.Utils;
 using Newtonsoft.Json;
 
@@ -14,9 +15,9 @@ public class ErrorHandlerMiddleware(ILogger baseLogger, IHub sentry) : IMiddlewa
         }
         catch (Exception e)
         {
-            var type = e.TargetSite?.DeclaringType ?? typeof(ErrorHandlerMiddleware);
-            var typeName = e.TargetSite?.DeclaringType?.FullName ?? "<unknown>";
-            var logger = baseLogger.ForContext(type);
+            Type type = e.TargetSite?.DeclaringType ?? typeof(ErrorHandlerMiddleware);
+            string typeName = e.TargetSite?.DeclaringType?.FullName ?? "<unknown>";
+            ILogger logger = baseLogger.ForContext(type);
 
             if (ctx.Response.HasStarted)
             {
@@ -31,14 +32,16 @@ public class ErrorHandlerMiddleware(ILogger baseLogger, IHub sentry) : IMiddlewa
                     e,
                     scope =>
                     {
-                        var user = ctx.GetUser();
+                        User? user = ctx.GetUser();
                         if (user != null)
+                        {
                             scope.User = new SentryUser
                             {
                                 Id = user.Id.ToString(),
                                 Username = user.Username,
                             };
                         }
+                    }
                 );
 
                 return;
@@ -98,18 +101,20 @@ public class ErrorHandlerMiddleware(ILogger baseLogger, IHub sentry) : IMiddlewa
                 logger.Error(e, "Exception in {ClassName} ({Path})", typeName, ctx.Request.Path);
             }
 
-            var errorId = sentry.CaptureException(
+            SentryId errorId = sentry.CaptureException(
                 e,
                 scope =>
                 {
-                    var user = ctx.GetUser();
+                    User? user = ctx.GetUser();
                     if (user != null)
+                    {
                         scope.User = new SentryUser
                         {
                             Id = user.Id.ToString(),
                             Username = user.Username,
                         };
                     }
+                }
             );
 
             ctx.Response.StatusCode = (int)HttpStatusCode.InternalServerError;

Foxnouns.Backend/Program.cs

@@ -9,9 +9,9 @@ using Prometheus;
 using Sentry.Extensibility;
 using Serilog;
 
-var builder = WebApplication.CreateBuilder(args);
+WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
 
-var config = builder.AddConfiguration();
+Config config = builder.AddConfiguration();
 
 builder.AddSerilog();
 
@@ -58,7 +58,7 @@ JsonConvert.DefaultSettings = () =>
 
 builder.AddServices(config).AddCustomMiddleware().AddEndpointsApiExplorer().AddSwaggerGen();
 
-var app = builder.Build();
+WebApplication app = builder.Build();
 
 await app.Initialize(args);
 

Foxnouns.Backend/Services/Auth/AuthService.cs

@@ -31,6 +31,16 @@ public class AuthService(
         CancellationToken ct = default
     )
     {
+        // Validate username and whether it's not taken
+        ValidationUtils.Validate(
+            [
+                ("username", ValidationUtils.ValidateUsername(username)),
+                ("password", ValidationUtils.ValidatePassword(password)),
+            ]
+        );
+        if (await db.Users.AnyAsync(u => u.Username == username, ct))
+            throw new ApiError.BadRequest("Username is already taken", "username", username);
+
         var user = new User
         {
             Id = snowflakeGenerator.GenerateSnowflake(),
@@ -49,7 +59,7 @@ public class AuthService(
         };
 
         db.Add(user);
-        user.Password = await Task.Run(() => _passwordHasher.HashPassword(user, password), ct);
+        user.Password = await HashPasswordAsync(user, password, ct);
 
         return user;
     }
@@ -70,6 +80,8 @@ public class AuthService(
     {
         AssertValidAuthType(authType, instance);
 
+        // Validate username and whether it's not taken
+        ValidationUtils.Validate([("username", ValidationUtils.ValidateUsername(username))]);
         if (await db.Users.AnyAsync(u => u.Username == username, ct))
             throw new ApiError.BadRequest("Username is already taken", "username", username);
 
@@ -111,28 +123,30 @@ public class AuthService(
         CancellationToken ct = default
     )
     {
-        var user = await db.Users.FirstOrDefaultAsync(
+        User? user = await db.Users.FirstOrDefaultAsync(
             u => u.AuthMethods.Any(a => a.AuthType == AuthType.Email && a.RemoteId == email),
             ct
         );
         if (user == null)
+        {
             throw new ApiError.NotFound(
                 "No user with that email address found, or password is incorrect",
                 ErrorCode.UserNotFound
             );
+        }
 
-        var pwResult = await Task.Run(
-            () => _passwordHasher.VerifyHashedPassword(user, user.Password!, password),
-            ct
-        );
+        PasswordVerificationResult pwResult = await VerifyHashedPasswordAsync(user, password, ct);
         if (pwResult == PasswordVerificationResult.Failed) // TODO: this seems to fail on some valid passwords?
+        {
             throw new ApiError.NotFound(
                 "No user with that email address found, or password is incorrect",
                 ErrorCode.UserNotFound
             );
+        }
+
         if (pwResult == PasswordVerificationResult.SuccessRehashNeeded)
         {
-            user.Password = await Task.Run(() => _passwordHasher.HashPassword(user, password), ct);
+            user.Password = await HashPasswordAsync(user, password, ct);
             await db.SaveChangesAsync(ct);
         }
 
@@ -160,10 +174,7 @@ public class AuthService(
             throw new FoxnounsError("Password for user supplied to ValidatePasswordAsync was null");
         }
 
-        var pwResult = await Task.Run(
-            () => _passwordHasher.VerifyHashedPassword(user, user.Password!, password),
-            ct
-        );
+        PasswordVerificationResult pwResult = await VerifyHashedPasswordAsync(user, password, ct);
         return pwResult
             is PasswordVerificationResult.SuccessRehashNeeded
                 or PasswordVerificationResult.Success;
@@ -178,7 +189,7 @@ public class AuthService(
         CancellationToken ct = default
     )
     {
-        user.Password = await Task.Run(() => _passwordHasher.HashPassword(user, password), ct);
+        user.Password = await HashPasswordAsync(user, password, ct);
         db.Update(user);
     }
 
@@ -225,13 +236,15 @@ public class AuthService(
         AssertValidAuthType(authType, app);
 
         // This is already checked when
-        var currentCount = await db
+        int currentCount = await db
             .AuthMethods.Where(m => m.UserId == userId && m.AuthType == authType)
             .CountAsync(ct);
         if (currentCount >= AuthUtils.MaxAuthMethodsPerType)
+        {
             throw new ApiError.BadRequest(
                 "Too many linked accounts of this type, maximum of 3 per account."
             );
+        }
 
         var authMethod = new AuthMethod
         {
@@ -256,13 +269,15 @@ public class AuthService(
     )
     {
         if (!AuthUtils.ValidateScopes(application, scopes))
+        {
             throw new ApiError.BadRequest(
                 "Invalid scopes requested for this token",
                 "scopes",
                 scopes
             );
+        }
 
-        var (token, hash) = GenerateToken();
+        (string? token, byte[]? hash) = GenerateToken();
         return (
             token,
             new Token
@@ -287,9 +302,9 @@ public class AuthService(
         CancellationToken ct = default
     )
     {
-        var frontendApp = await db.GetFrontendApplicationAsync(ct);
+        Application frontendApp = await db.GetFrontendApplicationAsync(ct);
 
-        var (tokenStr, token) = GenerateToken(
+        (string? tokenStr, Token? token) = GenerateToken(
             user,
             frontendApp,
             ["*"],
@@ -302,24 +317,35 @@ public class AuthService(
         await db.SaveChangesAsync(ct);
 
         return new CallbackResponse(
-            HasAccount: true,
-            Ticket: null,
-            RemoteUsername: null,
-            User: await userRenderer.RenderUserAsync(
-                user,
-                selfUser: user,
-                renderMembers: false,
-                ct: ct
-            ),
-            Token: tokenStr,
-            ExpiresAt: token.ExpiresAt
+            true,
+            null,
+            null,
+            await userRenderer.RenderUserAsync(user, user, renderMembers: false, ct: ct),
+            tokenStr,
+            token.ExpiresAt
         );
     }
 
+    private Task<string> HashPasswordAsync(
+        User user,
+        string password,
+        CancellationToken ct = default
+    ) => Task.Run(() => _passwordHasher.HashPassword(user, password), ct);
+
+    private Task<PasswordVerificationResult> VerifyHashedPasswordAsync(
+        User user,
+        string providedPassword,
+        CancellationToken ct = default
+    ) =>
+        Task.Run(
+            () => _passwordHasher.VerifyHashedPassword(user, user.Password!, providedPassword),
+            ct
+        );
+
     private static (string, byte[]) GenerateToken()
     {
-        var token = AuthUtils.RandomToken();
-        var hash = SHA512.HashData(Convert.FromBase64String(token));
+        string token = AuthUtils.RandomToken();
+        byte[] hash = SHA512.HashData(Convert.FromBase64String(token));
 
         return (token, hash);
     }

Foxnouns.Backend/Services/Auth/FediverseAuthService.Mastodon.cs

@@ -18,22 +18,25 @@ public partial class FediverseAuthService
         Snowflake? existingAppId = null
     )
     {
-        var resp = await _client.PostAsJsonAsync(
+        HttpResponseMessage resp = await _client.PostAsJsonAsync(
             $"https://{instance}/api/v1/apps",
             new CreateMastodonApplicationRequest(
-                ClientName: $"pronouns.cc (+{_config.BaseUrl})",
-                RedirectUris: MastodonRedirectUri(instance),
-                Scopes: "read read:accounts",
-                Website: _config.BaseUrl
+                $"pronouns.cc (+{_config.BaseUrl})",
+                MastodonRedirectUri(instance),
+                "read read:accounts",
+                _config.BaseUrl
             )
         );
         resp.EnsureSuccessStatusCode();
 
-        var mastodonApp = await resp.Content.ReadFromJsonAsync<PartialMastodonApplication>();
+        PartialMastodonApplication? mastodonApp =
+            await resp.Content.ReadFromJsonAsync<PartialMastodonApplication>();
         if (mastodonApp == null)
+        {
             throw new FoxnounsError(
                 $"Application created on Mastodon-compatible instance {instance} was null"
             );
+        }
 
         FediverseApplication app;
 
@@ -75,7 +78,7 @@ public partial class FediverseAuthService
         if (state != null)
             await _keyCacheService.ValidateAuthStateAsync(state);
 
-        var tokenResp = await _client.PostAsync(
+        HttpResponseMessage tokenResp = await _client.PostAsync(
             MastodonTokenUri(app.Domain),
             new FormUrlEncodedContent(
                 new Dictionary<string, string>
@@ -95,7 +98,7 @@ public partial class FediverseAuthService
         }
 
         tokenResp.EnsureSuccessStatusCode();
-        var token = (
+        string? token = (
             await tokenResp.Content.ReadFromJsonAsync<MastodonTokenResponse>()
         )?.AccessToken;
         if (token == null)
@@ -106,9 +109,9 @@ public partial class FediverseAuthService
         var req = new HttpRequestMessage(HttpMethod.Get, MastodonCurrentUserUri(app.Domain));
         req.Headers.Add("Authorization", $"Bearer {token}");
 
-        var currentUserResp = await _client.SendAsync(req);
+        HttpResponseMessage currentUserResp = await _client.SendAsync(req);
         currentUserResp.EnsureSuccessStatusCode();
-        var user = await currentUserResp.Content.ReadFromJsonAsync<FediverseUser>();
+        FediverseUser? user = await currentUserResp.Content.ReadFromJsonAsync<FediverseUser>();
         if (user == null)
         {
             throw new FoxnounsError($"User response from instance {app.Domain} was invalid");
@@ -131,7 +134,7 @@ public partial class FediverseAuthService
                 "An app credentials refresh was requested for {ApplicationId}, creating a new application",
                 app.Id
             );
-            app = await CreateMastodonApplicationAsync(app.Domain, existingAppId: app.Id);
+            app = await CreateMastodonApplicationAsync(app.Domain, app.Id);
         }
 
         state ??= HttpUtility.UrlEncode(await _keyCacheService.GenerateAuthStateAsync());

Foxnouns.Backend/Services/Auth/FediverseAuthService.cs

@@ -43,7 +43,7 @@ public partial class FediverseAuthService
         string? state = null
     )
     {
-        var app = await GetApplicationAsync(instance);
+        FediverseApplication app = await GetApplicationAsync(instance);
         return await GenerateAuthUrlAsync(app, forceRefresh, state);
     }
 
@@ -56,13 +56,15 @@ public partial class FediverseAuthService
 
     public async Task<FediverseApplication> GetApplicationAsync(string instance)
     {
-        var app = await _db.FediverseApplications.FirstOrDefaultAsync(a => a.Domain == instance);
+        FediverseApplication? app = await _db.FediverseApplications.FirstOrDefaultAsync(a =>
+            a.Domain == instance
+        );
         if (app != null)
             return app;
 
         _logger.Debug("No application for fediverse instance {Instance}, creating it", instance);
 
-        var softwareName = await GetSoftwareNameAsync(instance);
+        string softwareName = await GetSoftwareNameAsync(instance);
 
         if (IsMastodonCompatible(softwareName))
         {
@@ -76,13 +78,14 @@ public partial class FediverseAuthService
     {
         _logger.Debug("Requesting software name for fediverse instance {Instance}", instance);
 
-        var wellKnownResp = await _client.GetAsync(
+        HttpResponseMessage wellKnownResp = await _client.GetAsync(
             new Uri($"https://{instance}/.well-known/nodeinfo")
         );
         wellKnownResp.EnsureSuccessStatusCode();
 
-        var wellKnown = await wellKnownResp.Content.ReadFromJsonAsync<WellKnownResponse>();
-        var nodeInfoUrl = wellKnown?.Links.FirstOrDefault(l => l.Rel == NodeInfoRel)?.Href;
+        WellKnownResponse? wellKnown =
+            await wellKnownResp.Content.ReadFromJsonAsync<WellKnownResponse>();
+        string? nodeInfoUrl = wellKnown?.Links.FirstOrDefault(l => l.Rel == NodeInfoRel)?.Href;
         if (nodeInfoUrl == null)
         {
             throw new FoxnounsError(
@@ -90,10 +93,10 @@ public partial class FediverseAuthService
             );
         }
 
-        var nodeInfoResp = await _client.GetAsync(nodeInfoUrl);
+        HttpResponseMessage nodeInfoResp = await _client.GetAsync(nodeInfoUrl);
         nodeInfoResp.EnsureSuccessStatusCode();
 
-        var nodeInfo = await nodeInfoResp.Content.ReadFromJsonAsync<PartialNodeInfo>();
+        PartialNodeInfo? nodeInfo = await nodeInfoResp.Content.ReadFromJsonAsync<PartialNodeInfo>();
         return nodeInfo?.Software.Name
             ?? throw new FoxnounsError(
                 $"Nodeinfo response for instance {instance} was invalid, no software name"

Foxnouns.Backend/Services/Auth/RemoteAuthService.cs

@@ -29,7 +29,7 @@ public class RemoteAuthService(
     )
     {
         var redirectUri = $"{config.BaseUrl}/auth/callback/discord";
-        var resp = await _httpClient.PostAsync(
+        HttpResponseMessage resp = await _httpClient.PostAsync(
             _discordTokenUri,
             new FormUrlEncodedContent(
                 new Dictionary<string, string>
@@ -45,7 +45,7 @@ public class RemoteAuthService(
         );
         if (!resp.IsSuccessStatusCode)
         {
-            var respBody = await resp.Content.ReadAsStringAsync(ct);
+            string respBody = await resp.Content.ReadAsStringAsync(ct);
             _logger.Error(
                 "Received error status {StatusCode} when exchanging OAuth token: {ErrorBody}",
                 (int)resp.StatusCode,
@@ -55,16 +55,18 @@ public class RemoteAuthService(
         }
 
         resp.EnsureSuccessStatusCode();
-        var token = await resp.Content.ReadFromJsonAsync<DiscordTokenResponse>(ct);
+        DiscordTokenResponse? token = await resp.Content.ReadFromJsonAsync<DiscordTokenResponse>(
+            ct
+        );
         if (token == null)
             throw new FoxnounsError("Discord token response was null");
 
         var req = new HttpRequestMessage(HttpMethod.Get, _discordUserUri);
         req.Headers.Add("Authorization", $"{token.token_type} {token.access_token}");
 
-        var resp2 = await _httpClient.SendAsync(req, ct);
+        HttpResponseMessage resp2 = await _httpClient.SendAsync(req, ct);
         resp2.EnsureSuccessStatusCode();
-        var user = await resp2.Content.ReadFromJsonAsync<DiscordUserResponse>(ct);
+        DiscordUserResponse? user = await resp2.Content.ReadFromJsonAsync<DiscordUserResponse>(ct);
         if (user == null)
             throw new FoxnounsError("Discord user response was null");
 
@@ -104,7 +106,7 @@ public class RemoteAuthService(
         string? instance = null
     )
     {
-        var existingAccounts = await db
+        int existingAccounts = await db
             .AuthMethods.Where(m => m.UserId == userId && m.AuthType == authType)
             .CountAsync();
         if (existingAccounts > AuthUtils.MaxAuthMethodsPerType)
@@ -131,13 +133,17 @@ public class RemoteAuthService(
         string? instance = null
     )
     {
-        var accountState = await keyCacheService.GetAddExtraAccountStateAsync(state);
+        AddExtraAccountState? accountState = await keyCacheService.GetAddExtraAccountStateAsync(
+            state
+        );
         if (
             accountState == null
             || accountState.AuthType != authType
             || accountState.UserId != userId
             || (instance != null && accountState.Instance != instance)
         )
+        {
             throw new ApiError.BadRequest("Invalid state", "state", state);
         }
+    }
 }

Foxnouns.Backend/Services/DataCleanupService.cs

@@ -28,9 +28,9 @@ public class DataCleanupService(
 
     private async Task CleanUsersAsync(CancellationToken ct = default)
     {
-        var selfDeleteExpires = clock.GetCurrentInstant() - User.DeleteAfter;
-        var suspendExpires = clock.GetCurrentInstant() - User.DeleteSuspendedAfter;
-        var users = await db
+        Instant selfDeleteExpires = clock.GetCurrentInstant() - User.DeleteAfter;
+        Instant suspendExpires = clock.GetCurrentInstant() - User.DeleteSuspendedAfter;
+        List<User> users = await db
             .Users.Include(u => u.Members)
             .Include(u => u.DataExports)
             .Where(u =>
@@ -92,13 +92,15 @@ public class DataCleanupService(
     private async Task CleanExportsAsync(CancellationToken ct = default)
     {
         var minExpiredId = Snowflake.FromInstant(clock.GetCurrentInstant() - DataExport.Expiration);
-        var exports = await db.DataExports.Where(d => d.Id < minExpiredId).ToListAsync(ct);
+        List<DataExport> exports = await db
+            .DataExports.Where(d => d.Id < minExpiredId)
+            .ToListAsync(ct);
         if (exports.Count == 0)
             return;
 
         _logger.Debug("Deleting {Count} expired exports", exports.Count);
 
-        foreach (var export in exports)
+        foreach (DataExport? export in exports)
         {
             _logger.Debug("Deleting export {ExportId}", export.Id);
             await objectStorageService.RemoveObjectAsync(

Foxnouns.Backend/Services/KeyCacheService.cs

@@ -41,7 +41,7 @@ public class KeyCacheService(DatabaseContext db, IClock clock, ILogger logger)
         CancellationToken ct = default
     )
     {
-        var value = await db.TemporaryKeys.FirstOrDefaultAsync(k => k.Key == key, ct);
+        TemporaryKey? value = await db.TemporaryKeys.FirstOrDefaultAsync(k => k.Key == key, ct);
         if (value == null)
             return null;
 
@@ -56,7 +56,7 @@ public class KeyCacheService(DatabaseContext db, IClock clock, ILogger logger)
 
     public async Task DeleteExpiredKeysAsync(CancellationToken ct)
     {
-        var count = await db
+        int count = await db
             .TemporaryKeys.Where(k => k.Expires < clock.GetCurrentInstant())
             .ExecuteDeleteAsync(ct);
         if (count != 0)
@@ -79,7 +79,7 @@ public class KeyCacheService(DatabaseContext db, IClock clock, ILogger logger)
     )
         where T : class
     {
-        var value = JsonConvert.SerializeObject(obj);
+        string value = JsonConvert.SerializeObject(obj);
         await SetKeyAsync(key, value, expires, ct);
     }
 
@@ -90,7 +90,7 @@ public class KeyCacheService(DatabaseContext db, IClock clock, ILogger logger)
     )
         where T : class
     {
-        var value = await GetKeyAsync(key, delete, ct);
+        string? value = await GetKeyAsync(key, delete, ct);
         return value == null ? default : JsonConvert.DeserializeObject<T>(value);
     }
 }

Foxnouns.Backend/Services/MemberRendererService.cs

@@ -10,11 +10,11 @@ public class MemberRendererService(DatabaseContext db, Config config)
 {
     public async Task<IEnumerable<PartialMember>> RenderUserMembersAsync(User user, Token? token)
     {
-        var canReadHiddenMembers =
+        bool canReadHiddenMembers =
             token != null && token.UserId == user.Id && token.HasScope("member.read");
-        var renderUnlisted =
+        bool renderUnlisted =
             token != null && token.UserId == user.Id && token.HasScope("user.read_hidden");
-        var canReadMemberList = !user.ListHidden || canReadHiddenMembers;
+        bool canReadMemberList = !user.ListHidden || canReadHiddenMembers;
 
         IEnumerable<Member> members = canReadMemberList
             ? await db.Members.Where(m => m.UserId == user.Id).OrderBy(m => m.Name).ToListAsync()
@@ -30,7 +30,7 @@ public class MemberRendererService(DatabaseContext db, Config config)
         string? overrideSid = null
     )
     {
-        var renderUnlisted = token?.UserId == member.UserId && token.HasScope("user.read_hidden");
+        bool renderUnlisted = token?.UserId == member.UserId && token.HasScope("user.read_hidden");
 
         return new MemberResponse(
             member.Id,

Foxnouns.Backend/Services/MetricsCollectionService.cs

@@ -3,6 +3,7 @@ using Foxnouns.Backend.Database;
 using Microsoft.EntityFrameworkCore;
 using NodaTime;
 using Prometheus;
+using ITimer = Prometheus.ITimer;
 
 namespace Foxnouns.Backend.Services;
 
@@ -16,19 +17,23 @@ public class MetricsCollectionService(ILogger logger, IServiceProvider services,
 
     public async Task CollectMetricsAsync(CancellationToken ct = default)
     {
-        var timer = FoxnounsMetrics.MetricsCollectionTime.NewTimer();
-        var now = clock.GetCurrentInstant();
+        ITimer timer = FoxnounsMetrics.MetricsCollectionTime.NewTimer();
+        Instant now = clock.GetCurrentInstant();
 
-        await using var scope = services.CreateAsyncScope();
+        await using AsyncServiceScope scope = services.CreateAsyncScope();
+        // ReSharper disable once SuggestVarOrType_SimpleTypes
         await using var db = scope.ServiceProvider.GetRequiredService<DatabaseContext>();
 
-        var users = await db.Users.Where(u => !u.Deleted).Select(u => u.LastActive).ToListAsync(ct);
+        List<Instant>? users = await db
+            .Users.Where(u => !u.Deleted)
+            .Select(u => u.LastActive)
+            .ToListAsync(ct);
         FoxnounsMetrics.UsersCount.Set(users.Count);
         FoxnounsMetrics.UsersActiveMonthCount.Set(users.Count(i => i > now - Month));
         FoxnounsMetrics.UsersActiveWeekCount.Set(users.Count(i => i > now - Week));
         FoxnounsMetrics.UsersActiveDayCount.Set(users.Count(i => i > now - Day));
 
-        var memberCount = await db
+        int memberCount = await db
             .Members.Include(m => m.User)
             .Where(m => !m.Unlisted && !m.User.ListHidden && !m.User.Deleted)
             .CountAsync(ct);

Foxnouns.Backend/Services/ObjectStorageService.cs

@@ -1,4 +1,5 @@
 using Minio;
+using Minio.DataModel;
 using Minio.DataModel.Args;
 using Minio.Exceptions;
 
@@ -48,13 +49,4 @@ public class ObjectStorageService(ILogger logger, Config config, IMinioClient mi
             ct
         );
     }
-
-    public async Task GetObjectAsync(string path, CancellationToken ct = default)
-    {
-        var stream = new MemoryStream();
-        var resp = await minioClient.GetObjectAsync(
-            new GetObjectArgs().WithBucket(config.Storage.Bucket).WithObject(path),
-            ct
-        );
-    }
 }

Foxnouns.Backend/Services/PeriodicTasksService.cs

@@ -15,10 +15,13 @@ public class PeriodicTasksService(ILogger logger, IServiceProvider services) : B
     {
         _logger.Debug("Running periodic tasks");
 
-        await using var scope = services.CreateAsyncScope();
+        await using AsyncServiceScope scope = services.CreateAsyncScope();
 
+        // The type is literally written on the same line, we can just use `var`
+        // ReSharper disable SuggestVarOrType_SimpleTypes
         var keyCacheService = scope.ServiceProvider.GetRequiredService<KeyCacheService>();
         var dataCleanupService = scope.ServiceProvider.GetRequiredService<DataCleanupService>();
+        // ReSharper restore SuggestVarOrType_SimpleTypes
 
         await keyCacheService.DeleteExpiredKeysAsync(ct);
         await dataCleanupService.InvokeAsync(ct);

Foxnouns.Backend/Services/UserRendererService.cs

@@ -43,9 +43,9 @@ public class UserRendererService(
     )
     {
         scopes = scopes.ExpandScopes();
-        var tokenCanReadHiddenMembers = scopes.Contains("member.read") && isSelfUser;
-        var tokenHidden = scopes.Contains("user.read_hidden") && isSelfUser;
-        var tokenPrivileged = scopes.Contains("user.read_privileged") && isSelfUser;
+        bool tokenCanReadHiddenMembers = scopes.Contains("member.read") && isSelfUser;
+        bool tokenHidden = scopes.Contains("user.read_hidden") && isSelfUser;
+        bool tokenPrivileged = scopes.Contains("user.read_privileged") && isSelfUser;
 
         renderMembers = renderMembers && (!user.ListHidden || tokenCanReadHiddenMembers);
         renderAuthMethods = renderAuthMethods && tokenPrivileged;
@@ -57,12 +57,12 @@ public class UserRendererService(
         if (!(isSelfUser && tokenCanReadHiddenMembers))
             members = members.Where(m => !m.Unlisted);
 
-        var flags = await db
+        List<UserFlag> flags = await db
             .UserFlags.Where(f => f.UserId == user.Id)
             .OrderBy(f => f.Id)
             .ToListAsync(ct);
 
-        var authMethods = renderAuthMethods
+        List<AuthMethod> authMethods = renderAuthMethods
             ? await db
                 .AuthMethods.Where(a => a.UserId == user.Id)
                 .Include(a => a.FediverseApplication)
@@ -72,9 +72,11 @@ public class UserRendererService(
         int? utcOffset = null;
         if (
             user.Timezone != null
-            && TimeZoneInfo.TryFindSystemTimeZoneById(user.Timezone, out var tz)
+            && TimeZoneInfo.TryFindSystemTimeZoneById(user.Timezone, out TimeZoneInfo? tz)
         )
+        {
             utcOffset = (int)tz.GetUtcOffset(DateTimeOffset.UtcNow).TotalSeconds;
+        }
 
         return new UserResponse(
             user.Id,

Foxnouns.Backend/Utils/AuthUtils.cs

@@ -69,8 +69,8 @@ public static class AuthUtils
 
     public static bool ValidateScopes(Application application, string[] scopes)
     {
-        var expandedScopes = scopes.ExpandScopes();
-        var appScopes = application.Scopes.ExpandAppScopes();
+        string[] expandedScopes = scopes.ExpandScopes();
+        string[] appScopes = application.Scopes.ExpandAppScopes();
         return !expandedScopes.Except(appScopes).Any();
     }
 
@@ -78,7 +78,7 @@ public static class AuthUtils
     {
         try
         {
-            var scheme = new Uri(uri).Scheme;
+            string scheme = new Uri(uri).Scheme;
             return !ForbiddenSchemes.Contains(scheme);
         }
         catch

Foxnouns.Backend/Utils/PatchRequest.cs

@@ -5,10 +5,11 @@ using Newtonsoft.Json.Serialization;
 namespace Foxnouns.Backend.Utils;
 
 /// <summary>
-/// A base class used for PATCH requests which stores information on whether a key is explicitly set to null or not passed at all.
-///
+/// <para>A base class used for PATCH requests which stores information on whether a key is explicitly set to null or not passed at all.</para>
+/// <para>
 /// HasProperty() should not be used for properties that cannot be set to null--a null value should be treated
 /// as an unset value in those cases.
+/// </para>
 /// </summary>
 public abstract class PatchRequest
 {
@@ -30,7 +31,7 @@ public class PatchRequestContractResolver : DefaultContractResolver
         MemberSerialization memberSerialization
     )
     {
-        var prop = base.CreateProperty(member, memberSerialization);
+        JsonProperty prop = base.CreateProperty(member, memberSerialization);
 
         prop.SetIsSpecified += (o, _) =>
         {

Foxnouns.Backend/Utils/ValidationUtils.Fields.cs

@@ -39,6 +39,7 @@ public static partial class ValidationUtils
 
         var errors = new List<(string, ValidationError?)>();
         if (fields.Count > 25)
+        {
             errors.Add(
                 (
                     "fields",
@@ -50,11 +51,13 @@ public static partial class ValidationUtils
                     )
                 )
             );
+        }
+
         // No overwhelming this function, thank you
         if (fields.Count > 100)
             return errors;
 
-        foreach (var (field, index) in fields.Select((field, index) => (field, index)))
+        foreach ((Field? field, int index) in fields.Select((field, index) => (field, index)))
         {
             switch (field.Name.Length)
             {
@@ -111,6 +114,7 @@ public static partial class ValidationUtils
         var errors = new List<(string, ValidationError?)>();
 
         if (entries.Length > Limits.FieldEntriesLimit)
+        {
             errors.Add(
                 (
                     errorPrefix,
@@ -122,15 +126,19 @@ public static partial class ValidationUtils
                     )
                 )
             );
+        }
 
         // Same as above, no overwhelming this function with a ridiculous amount of entries
         if (entries.Length > Limits.FieldEntriesLimit + 50)
             return errors;
 
-        var customPreferenceIds =
-            customPreferences?.Keys.Select(id => id.ToString()).ToArray() ?? [];
+        string[] customPreferenceIds = customPreferences.Keys.Select(id => id.ToString()).ToArray();
 
-        foreach (var (entry, entryIdx) in entries.Select((entry, entryIdx) => (entry, entryIdx)))
+        foreach (
+            (FieldEntry? entry, int entryIdx) in entries.Select(
+                (entry, entryIdx) => (entry, entryIdx)
+            )
+        )
         {
             switch (entry.Value.Length)
             {
@@ -166,6 +174,7 @@ public static partial class ValidationUtils
                 !DefaultStatusOptions.Contains(entry.Status)
                 && !customPreferenceIds.Contains(entry.Status)
             )
+            {
                 errors.Add(
                     (
                         $"{errorPrefix}.{entryIdx}.status",
@@ -173,6 +182,7 @@ public static partial class ValidationUtils
                     )
                 );
             }
+        }
 
         return errors;
     }
@@ -188,6 +198,7 @@ public static partial class ValidationUtils
         var errors = new List<(string, ValidationError?)>();
 
         if (entries.Length > Limits.FieldEntriesLimit)
+        {
             errors.Add(
                 (
                     errorPrefix,
@@ -199,15 +210,17 @@ public static partial class ValidationUtils
                     )
                 )
             );
+        }
 
         // Same as above, no overwhelming this function with a ridiculous amount of entries
         if (entries.Length > Limits.FieldEntriesLimit + 50)
             return errors;
 
-        var customPreferenceIds =
-            customPreferences?.Keys.Select(id => id.ToString()).ToList() ?? [];
+        string[] customPreferenceIds = customPreferences.Keys.Select(id => id.ToString()).ToArray();
 
-        foreach (var (entry, entryIdx) in entries.Select((entry, entryIdx) => (entry, entryIdx)))
+        foreach (
+            (Pronoun? entry, int entryIdx) in entries.Select((entry, entryIdx) => (entry, entryIdx))
+        )
         {
             switch (entry.Value.Length)
             {
@@ -276,6 +289,7 @@ public static partial class ValidationUtils
                 !DefaultStatusOptions.Contains(entry.Status)
                 && !customPreferenceIds.Contains(entry.Status)
             )
+            {
                 errors.Add(
                     (
                         $"{errorPrefix}.{entryIdx}.status",
@@ -283,6 +297,7 @@ public static partial class ValidationUtils
                     )
                 );
             }
+        }
 
         return errors;
     }

Foxnouns.Backend/Utils/ValidationUtils.Preferences.cs

@@ -29,6 +29,7 @@ public static partial class ValidationUtils
         var errors = new List<(string, ValidationError?)>();
 
         if (preferences.Count > MaxCustomPreferences)
+        {
             errors.Add(
                 (
                     "custom_preferences",
@@ -40,20 +41,29 @@ public static partial class ValidationUtils
                     )
                 )
             );
+        }
+
         if (preferences.Count > 50)
             return errors;
 
-        foreach (var (p, i) in preferences.Select((p, i) => (p, i)))
+        foreach (
+            (UsersController.CustomPreferenceUpdate? p, int i) in preferences.Select(
+                (p, i) => (p, i)
+            )
+        )
         {
             if (!BootstrapIcons.IsValid(p.Icon))
+            {
                 errors.Add(
                     (
                         $"custom_preferences.{i}.icon",
                         ValidationError.DisallowedValueError("Invalid icon name", [], p.Icon)
                     )
                 );
+            }
 
             if (p.Tooltip.Length is 1 or > MaxPreferenceTooltipLength)
+            {
                 errors.Add(
                     (
                         $"custom_preferences.{i}.tooltip",
@@ -66,6 +76,7 @@ public static partial class ValidationUtils
                     )
                 );
             }
+        }
 
         return errors;
     }

Foxnouns.Backend/Utils/ValidationUtils.Strings.cs

@@ -46,6 +46,7 @@ public static partial class ValidationUtils
     public static ValidationError? ValidateUsername(string username)
     {
         if (!UsernameRegex().IsMatch(username))
+        {
             return username.Length switch
             {
                 < 2 => ValidationError.LengthError("Username is too short", 2, 40, username.Length),
@@ -55,19 +56,24 @@ public static partial class ValidationUtils
                     username
                 ),
             };
+        }
 
         if (
             InvalidUsernames.Any(u =>
                 string.Equals(u, username, StringComparison.InvariantCultureIgnoreCase)
             )
         )
+        {
             return ValidationError.GenericValidationError("Username is not allowed", username);
+        }
+
         return null;
     }
 
     public static ValidationError? ValidateMemberName(string memberName)
     {
         if (!MemberRegex().IsMatch(memberName))
+        {
             return memberName.Length switch
             {
                 < 1 => ValidationError.LengthError("Name is too short", 1, 100, memberName.Length),
@@ -79,13 +85,17 @@ public static partial class ValidationUtils
                     memberName
                 ),
             };
+        }
 
         if (
             InvalidMemberNames.Any(u =>
                 string.Equals(u, memberName, StringComparison.InvariantCultureIgnoreCase)
             )
         )
+        {
             return ValidationError.GenericValidationError("Name is not allowed", memberName);
+        }
+
         return null;
     }
 
@@ -117,13 +127,15 @@ public static partial class ValidationUtils
         if (links == null)
             return [];
         if (links.Length > MaxLinks)
+        {
             return
             [
                 ("links", ValidationError.LengthError("Too many links", 0, MaxLinks, links.Length)),
             ];
+        }
 
         var errors = new List<(string, ValidationError?)>();
-        foreach (var (link, idx) in links.Select((l, i) => (l, i)))
+        foreach ((string link, int idx) in links.Select((l, i) => (l, i)))
         {
             switch (link.Length)
             {
@@ -185,6 +197,27 @@ public static partial class ValidationUtils
         };
     }
 
+    public const int MinimumPasswordLength = 12;
+    public const int MaximumPasswordLength = 1024;
+
+    public static ValidationError? ValidatePassword(string password) =>
+        password.Length switch
+        {
+            < MinimumPasswordLength => ValidationError.LengthError(
+                "Password is too short",
+                MinimumPasswordLength,
+                MaximumPasswordLength,
+                password.Length
+            ),
+            > MaximumPasswordLength => ValidationError.LengthError(
+                "Password is too long",
+                MinimumPasswordLength,
+                MaximumPasswordLength,
+                password.Length
+            ),
+            _ => null,
+        };
+
     [GeneratedRegex(@"^[a-zA-Z_0-9\-\.]{2,40}$", RegexOptions.IgnoreCase, "en-NL")]
     private static partial Regex UsernameRegex();
 

Foxnouns.Backend/Utils/ValidationUtils.cs

@@ -12,9 +12,9 @@ public static partial class ValidationUtils
             return;
 
         var errorDict = new Dictionary<string, IEnumerable<ValidationError>>();
-        foreach (var error in errors)
+        foreach ((string, ValidationError?) error in errors)
         {
-            if (errorDict.TryGetValue(error.Item1, out var value))
+            if (errorDict.TryGetValue(error.Item1, out IEnumerable<ValidationError>? value))
                 errorDict[error.Item1] = value.Append(error.Item2!);
             errorDict.Add(error.Item1, [error.Item2!]);
         }

Foxnouns.Backend/Views/Mail/AccountCreation.cshtml

@@ -2,9 +2,9 @@
 
 <p>
     Please continue creating a new pronouns.cc account by using the following link:
-    <br/>
-    <a href="@Model.BaseUrl/auth/signup/confirm/@Model.Code">Confirm your email address</a>
-    <br/>
+    <br />
+    <a href="@Model.BaseUrl/auth/callback/email/@Model.Code">Confirm your email address</a>
+    <br />
     Note that this link will expire in one hour.
 </p>
 <p>

Foxnouns.Backend/Views/Mail/AddEmail.cshtml

@@ -2,9 +2,9 @@
 
 <p>
     Hello @@@Model.Username, please confirm adding this email address to your account by using the following link:
-    <br/>
-    <a href="@Model.BaseUrl/settings/auth/confirm-email/@Model.Code">Confirm your email address</a>
-    <br/>
+    <br />
+    <a href="@Model.BaseUrl/auth/callback/email/@Model.Code">Confirm your email address</a>
+    <br />
     Note that this link will expire in one hour.
 </p>
 <p>

Foxnouns.Backend/Views/Mail/Layout.cshtml

@@ -2,9 +2,9 @@
 <html lang="en">
 <head>
     <title></title>
-    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1">
-    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <style>
         body {
             font-family: sans-serif;

Foxnouns.Backend/packages.lock.json

@@ -194,6 +194,12 @@
           "prometheus-net": "8.2.1"
         }
       },
+      "Roslynator.Analyzers": {
+        "type": "Direct",
+        "requested": "[4.12.9, )",
+        "resolved": "4.12.9",
+        "contentHash": "X6lDpN/D5wuinq37KIx+l3GSUe9No+8bCjGBTI5sEEtxapLztkHg6gzNVhMXpXw8P+/5gFYxTXJ5Pf8O4iNz/w=="
+      },
       "Sentry.AspNetCore": {
         "type": "Direct",
         "requested": "[4.9.0, )",

Foxnouns.Frontend/src/lib/actions/callback.ts

@@ -0,0 +1,69 @@
+import { apiRequest } from "$api";
+import ApiError, { ErrorCode } from "$api/error";
+import type { AddAccountResponse, CallbackResponse } from "$api/models";
+import { setToken } from "$lib";
+import log from "$lib/log";
+import { isRedirect, redirect, type ServerLoadEvent } from "@sveltejs/kit";
+
+export default function createCallbackLoader(
+	callbackType: string,
+	bodyFn?: (event: ServerLoadEvent) => Promise<unknown>,
+) {
+	return async (event: ServerLoadEvent) => {
+		const { url, parent, fetch, cookies } = event;
+
+		bodyFn ??= async ({ url }) => {
+			const code = url.searchParams.get("code") as string | null;
+			const state = url.searchParams.get("state") as string | null;
+			if (!code || !state) throw new ApiError(undefined, ErrorCode.BadRequest).obj;
+			return { code, state };
+		};
+
+		const { meUser } = await parent();
+		if (meUser) {
+			try {
+				const resp = await apiRequest<AddAccountResponse>(
+					"POST",
+					`/auth/${callbackType}/add-account/callback`,
+					{
+						isInternal: true,
+						body: await bodyFn(event),
+						fetch,
+						cookies,
+					},
+				);
+
+				return { hasAccount: true, isLinkRequest: true, newAuthMethod: resp };
+			} catch (e) {
+				if (e instanceof ApiError) return { isLinkRequest: true, error: e.obj };
+				log.error("error linking new %s account to user %s:", callbackType, meUser.id, e);
+				throw e;
+			}
+		}
+
+		try {
+			const resp = await apiRequest<CallbackResponse>("POST", `/auth/${callbackType}/callback`, {
+				body: await bodyFn(event),
+				isInternal: true,
+				fetch,
+			});
+
+			if (resp.has_account) {
+				setToken(cookies, resp.token!);
+				redirect(303, `/@${resp.user!.username}`);
+			}
+
+			return {
+				hasAccount: false,
+				isLinkRequest: false,
+				ticket: resp.ticket!,
+				remoteUser: resp.remote_username!,
+			};
+		} catch (e) {
+			if (isRedirect(e)) throw e;
+			if (e instanceof ApiError) return { isLinkRequest: false, error: e.obj };
+			log.error("error while requesting %s callback:", callbackType, e);
+			throw e;
+		}
+	};
+}

Foxnouns.Frontend/src/lib/components/editor/FormStatusMarker.svelte

@@ -4,8 +4,8 @@
 	import type { RawApiError } from "$api/error";
 	import ErrorAlert from "$components/ErrorAlert.svelte";
 
-	type Props = { form: { error: RawApiError | null; ok: boolean } | null };
-	let { form }: Props = $props();
+	type Props = { form: { error: RawApiError | null; ok: boolean } | null; successMessage?: string };
+	let { form, successMessage }: Props = $props();
 </script>
 
 {#if form?.error}
@@ -13,6 +13,6 @@
 {:else if form?.ok}
 	<p class="text-success-emphasis">
 		<Icon name="check-circle-fill" />
-		{$t("edit-profile.saved-changes")}
+		{successMessage ?? $t("edit-profile.saved-changes")}
 	</p>
 {/if}

Foxnouns.Frontend/src/lib/components/settings/OauthRegistrationForm.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
 	import type { RawApiError } from "$api/error";
-	import { enhance } from "$app/forms";
 	import ErrorAlert from "$components/ErrorAlert.svelte";
 	import { t } from "$lib/i18n";
 	import { Button, Input, Label } from "@sveltestrap/sveltestrap";
@@ -21,7 +20,7 @@
 	<ErrorAlert {error} />
 {/if}
 
-<form method="POST" use:enhance>
+<form method="POST">
 	<div class="mb-3">
 		<Label>{remoteLabel}</Label>
 		<Input type="text" readonly value={remoteUser} />

Foxnouns.Frontend/src/lib/i18n/locales/en.json

@@ -48,7 +48,11 @@
     "successful-link-profile-hint": "You now can close this page, or go back to your profile:",
     "successful-link-profile-link": "Go to your profile",
     "remote-discord-account-label": "Your Discord account",
-		"log-in-with-fediverse-instance-placeholder": "Your instance (i.e. mastodon.social)"
+    "log-in-with-fediverse-instance-placeholder": "Your instance (i.e. mastodon.social)",
+    "register-with-email": "Register with an email address",
+    "email-label": "Your email address",
+    "confirm-password-label": "Confirm password",
+    "register-with-email-init-success": "Success! An email has been sent to your inbox, please press the link there to continue."
   },
   "error": {
     "bad-request-header": "Something was wrong with your input",

Foxnouns.Frontend/src/routes/auth/callback/discord/+page.server.ts

@@ -1,63 +1,7 @@
-import { apiRequest } from "$api";
-import ApiError, { ErrorCode } from "$api/error";
-import type { AddAccountResponse, CallbackResponse } from "$api/models/auth";
-import { setToken } from "$lib";
-import createRegisterAction from "$lib/actions/register.js";
-import log from "$lib/log.js";
-import { isRedirect, redirect } from "@sveltejs/kit";
+import createCallbackLoader from "$lib/actions/callback";
+import createRegisterAction from "$lib/actions/register";
 
-export const load = async ({ url, parent, fetch, cookies }) => {
-	const code = url.searchParams.get("code") as string | null;
-	const state = url.searchParams.get("state") as string | null;
-	if (!code || !state) throw new ApiError(undefined, ErrorCode.BadRequest).obj;
-
-	const { meUser } = await parent();
-	if (meUser) {
-		try {
-			const resp = await apiRequest<AddAccountResponse>(
-				"POST",
-				"/auth/discord/add-account/callback",
-				{
-					isInternal: true,
-					body: { code, state },
-					fetch,
-					cookies,
-				},
-			);
-
-			return { hasAccount: true, isLinkRequest: true, newAuthMethod: resp };
-		} catch (e) {
-			if (e instanceof ApiError) return { isLinkRequest: true, error: e.obj };
-			log.error("error linking new discord account to user %s:", meUser.id, e);
-			throw e;
-		}
-	}
-
-	try {
-		const resp = await apiRequest<CallbackResponse>("POST", "/auth/discord/callback", {
-			body: { code, state },
-			isInternal: true,
-			fetch,
-		});
-
-		if (resp.has_account) {
-			setToken(cookies, resp.token!);
-			redirect(303, `/@${resp.user!.username}`);
-		}
-
-		return {
-			hasAccount: false,
-			isLinkRequest: false,
-			ticket: resp.ticket!,
-			remoteUser: resp.remote_username!,
-		};
-	} catch (e) {
-		if (isRedirect(e)) throw e;
-		if (e instanceof ApiError) return { isLinkRequest: false, error: e.obj };
-		log.error("error while requesting discord callback:", e);
-		throw e;
-	}
-};
+export const load = createCallbackLoader("discord");
 
 export const actions = {
 	default: createRegisterAction("/auth/discord/register"),

Foxnouns.Frontend/src/routes/auth/callback/email/[code]/+page.server.ts

@@ -0,0 +1,53 @@
+import { apiRequest } from "$api";
+import ApiError, { ErrorCode, type RawApiError } from "$api/error";
+import type { AuthResponse } from "$api/models/auth";
+import { setToken } from "$lib";
+import createCallbackLoader from "$lib/actions/callback";
+import log from "$lib/log";
+import { redirect, isRedirect } from "@sveltejs/kit";
+
+export const load = createCallbackLoader("email", async ({ params }) => {
+	log.info("params:", params, "code:", params.code);
+
+	return { state: params.code! };
+});
+
+export const actions = {
+	default: async ({ request, fetch, cookies }) => {
+		const data = await request.formData();
+		const username = data.get("username") as string | null;
+		const ticket = data.get("ticket") as string | null;
+		const password = data.get("password") as string | null;
+		const password2 = data.get("confirm-password") as string | null;
+
+		if (!username || !ticket || !password || !password2)
+			return {
+				error: { message: "Bad request", code: ErrorCode.BadRequest, status: 400 } as RawApiError,
+			};
+
+		if (password !== password2)
+			return {
+				error: {
+					message: "Passwords do not match",
+					code: ErrorCode.BadRequest,
+					status: 400,
+				} as RawApiError,
+			};
+
+		try {
+			const resp = await apiRequest<AuthResponse>("POST", "/auth/email/register", {
+				body: { username, ticket, password },
+				isInternal: true,
+				fetch,
+			});
+
+			setToken(cookies, resp.token);
+			redirect(303, "/auth/welcome");
+		} catch (e) {
+			if (isRedirect(e)) throw e;
+			log.error("Could not sign up user with username %s:", username, e);
+			if (e instanceof ApiError) return { error: e.obj };
+			throw e;
+		}
+	},
+};

Foxnouns.Frontend/src/routes/auth/callback/email/[code]/+page.svelte

@@ -0,0 +1,51 @@
+<script lang="ts">
+	import Error from "$components/Error.svelte";
+	import ErrorAlert from "$components/ErrorAlert.svelte";
+	import NewAuthMethod from "$components/settings/NewAuthMethod.svelte";
+	import { t } from "$lib/i18n";
+	import { Label, Input, Button } from "@sveltestrap/sveltestrap";
+	import type { ActionData, PageData } from "./$types";
+
+	type Props = { data: PageData; form: ActionData };
+	let { data, form }: Props = $props();
+</script>
+
+<svelte:head>
+	<title>{$t("auth.register-with-email")} • pronouns.cc</title>
+</svelte:head>
+
+<div class="container">
+	{#if data.error}
+		<h1>{$t("auth.register-with-email")}</h1>
+		<Error error={data.error} />
+	{:else if data.isLinkRequest}
+		<NewAuthMethod method={data.newAuthMethod!} user={data.meUser!} />
+	{:else}
+		<h1>{$t("auth.register-with-email")}</h1>
+
+		{#if form?.error}
+			<ErrorAlert error={form.error} />
+		{/if}
+
+		<form method="POST">
+			<div class="mb-3">
+				<Label>{$t("auth.email-label")}</Label>
+				<Input type="text" readonly value={data.remoteUser} />
+			</div>
+			<div class="mb-3">
+				<Label>{$t("auth.register-username-label")}</Label>
+				<Input type="text" name="username" required />
+			</div>
+			<div class="mb-3">
+				<Label>{$t("auth.log-in-form-password-label")}</Label>
+				<Input type="password" name="password" required />
+			</div>
+			<div class="mb-3">
+				<Label>{$t("auth.confirm-password-label")}</Label>
+				<Input type="password" name="confirm-password" required />
+			</div>
+			<input type="hidden" name="ticket" value={data.ticket!} />
+			<Button color="primary" type="submit">{$t("auth.register-button")}</Button>
+		</form>
+	{/if}
+</div>

Foxnouns.Frontend/src/routes/auth/callback/mastodon/[instance]/+page.server.ts

@@ -1,63 +1,14 @@
-import { apiRequest } from "$api";
 import ApiError, { ErrorCode } from "$api/error";
-import type { AddAccountResponse, CallbackResponse } from "$api/models/auth.js";
-import { setToken } from "$lib";
-import createRegisterAction from "$lib/actions/register.js";
-import log from "$lib/log";
-import { isRedirect, redirect } from "@sveltejs/kit";
+import createCallbackLoader from "$lib/actions/callback";
+import createRegisterAction from "$lib/actions/register";
 
-export const load = async ({ parent, params, url, fetch, cookies }) => {
+export const load = createCallbackLoader("fediverse", async ({ params, url }) => {
 	const code = url.searchParams.get("code") as string | null;
 	const state = url.searchParams.get("state") as string | null;
 	if (!code || !state) throw new ApiError(undefined, ErrorCode.BadRequest).obj;
 
-	const { meUser } = await parent();
-	if (meUser) {
-		try {
-			const resp = await apiRequest<AddAccountResponse>(
-				"POST",
-				"/auth/fediverse/add-account/callback",
-				{
-					isInternal: true,
-					body: { code, state, instance: params.instance },
-					fetch,
-					cookies,
-				},
-			);
-
-			return { hasAccount: true, isLinkRequest: true, newAuthMethod: resp };
-		} catch (e) {
-			if (e instanceof ApiError) return { isLinkRequest: true, error: e.obj };
-			log.error("error linking new fediverse account to user %s:", meUser.id, e);
-			throw e;
-		}
-	}
-
-	try {
-		const resp = await apiRequest<CallbackResponse>("POST", "/auth/fediverse/callback", {
-			body: { code, state, instance: params.instance },
-			isInternal: true,
-			fetch,
-		});
-
-		if (resp.has_account) {
-			setToken(cookies, resp.token!);
-			redirect(303, `/@${resp.user!.username}`);
-		}
-
-		return {
-			hasAccount: false,
-			isLinkRequest: false,
-			ticket: resp.ticket!,
-			remoteUser: resp.remote_username!,
-		};
-	} catch (e) {
-		if (isRedirect(e)) throw e;
-		if (e instanceof ApiError) return { isLinkRequest: false, error: e.obj };
-		log.error("error while requesting fediverse callback:", e);
-		throw e;
-	}
-};
+	return { code, state, instance: params.instance! };
+});
 
 export const actions = {
 	default: createRegisterAction("/auth/fediverse/register"),

Foxnouns.Frontend/src/routes/auth/register/+page.server.ts

@@ -0,0 +1,35 @@
+import { apiRequest, fastRequest } from "$api";
+import ApiError from "$api/error.js";
+import type { AuthUrls } from "$api/models/auth";
+import log from "$lib/log.js";
+import { redirect } from "@sveltejs/kit";
+
+export const load = async ({ fetch, parent }) => {
+	const parentData = await parent();
+	if (parentData.meUser) redirect(303, `/@${parentData.meUser.username}`);
+
+	const urls = await apiRequest<AuthUrls>("POST", "/auth/urls", { fetch, isInternal: true });
+	if (!urls.email_enabled) redirect(303, "/");
+};
+
+export const actions = {
+	default: async ({ request, fetch, cookies }) => {
+		const body = await request.formData();
+		const email = body.get("email") as string;
+
+		try {
+			await fastRequest("POST", `/auth/email/register/init`, {
+				body: { email },
+				isInternal: true,
+				fetch,
+				cookies,
+			});
+
+			return { ok: true, error: null };
+		} catch (e) {
+			if (e instanceof ApiError) return { ok: false, error: e.obj };
+			log.error("error initiating registration for email %s:", email, e);
+			throw e;
+		}
+	},
+};

Foxnouns.Frontend/src/routes/auth/register/+page.svelte

@@ -0,0 +1,29 @@
+<script lang="ts">
+	import type { ActionData, PageData } from "./$types";
+	import { t } from "$lib/i18n";
+	import { enhance } from "$app/forms";
+	import { Button, Input, InputGroup } from "@sveltestrap/sveltestrap";
+	import FormStatusMarker from "$components/editor/FormStatusMarker.svelte";
+
+	type Props = { data: PageData; form: ActionData };
+	let { data, form }: Props = $props();
+</script>
+
+<svelte:head>
+	<title>{$t("auth.register-with-email")} • pronouns.cc</title>
+</svelte:head>
+
+<div class="container">
+	<div class="mx-auto w-lg-75">
+		<h2>{$t("auth.register-with-email")}</h2>
+
+		<FormStatusMarker {form} successMessage={$t("auth.register-with-email-init-success")} />
+
+		<form method="POST" use:enhance>
+			<InputGroup>
+				<Input name="email" type="email" placeholder={$t("auth.email-label")} />
+				<Button type="submit" color="secondary">{$t("auth.register-with-email-button")}</Button>
+			</InputGroup>
+		</form>
+	</div>
+</div>

Foxnouns.Frontend/src/routes/settings/auth/add-fediverse/+page.svelte

@@ -3,9 +3,10 @@
 	import { Button, Input, InputGroup } from "@sveltestrap/sveltestrap";
 </script>
 
-<h3>Link a new Fediverse account</h3>
+<div class="mx-auto w-lg-75">
+	<h3>Link a new Fediverse account</h3>
 
-<form method="POST" action="?/add">
+	<form method="POST" action="?/add">
 		<InputGroup>
 			<Input
 				name="instance"
@@ -20,4 +21,5 @@
 				{$t("auth.log-in-with-fediverse-force-refresh-button")}
 			</Button>
 		</p>
-</form>
+	</form>
+</div>

Foxnouns.Frontend/src/routes/settings/export/+page.svelte

@@ -5,6 +5,7 @@
 	import { Icon } from "@sveltestrap/sveltestrap";
 	import { t } from "$lib/i18n";
 	import { enhance } from "$app/forms";
+	import FormStatusMarker from "$components/editor/FormStatusMarker.svelte";
 
 	type Props = { data: PageData; form: ActionData };
 	let { data, form }: Props = $props();
@@ -18,14 +19,7 @@
 <div class="mx-auto w-lg-75">
 	<h3>{$t("settings.export-title")}</h3>
 
-	{#if form?.ok}
-		<p class="text-success-emphasis">
-			<Icon name="check-circle-fill" />
-			{$t("settings.export-request-success")}
-		</p>
-	{:else if form?.error}
-		<ErrorAlert error={form.error} />
-	{/if}
+	<FormStatusMarker {form} successMessage={$t("settings.export-request-success")} />
 
 	<p>
 		{$t("settings.export-info")}

Foxnouns.NET.sln.DotSettings

@@ -1,4 +1,5 @@
 <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:String x:Key="/Default/CodeStyle/CSharpVarKeywordUsage/ForBuiltInTypes/@EntryValue">UseVarWhenEvident</s:String>
 	<s:String x:Key="/Default/CodeStyle/FileHeader/FileHeaderText/@EntryValue">Copyright (C) 2023-present sam/u1f320 (vulpine.solutions)
 
 This program is free software: you can redistribute it and/or modify

STYLE.md

@@ -3,9 +3,8 @@
 ## C# code style
 
 - Code should be formatted with `dotnet format` or Rider's built-in formatter.
-- Variables should *always* be declared using `var`,
-  unless the correct type can't be inferred from the declaration (i.e. if the variable needs to be an `IEnumerable<T>`
-  instead of a `List<T>`, or if a variable is initialized as `null`).
+- Variables should always be declared with their type name, unless the type is obvious from the declaration.
+  (For example, `var stream = new Stream()` or `var db = services.GetRequiredService<DatabaseContext>()`)
 
 ### Naming