refactor: more consistent field names, also in STYLE.md

This commit is contained in:
sam 2024-09-09 14:50:00 +02:00
parent 344a0071e5
commit c77ee660ca
Signed by: sam
GPG key ID: B4EF20DDE721CAA1
14 changed files with 86 additions and 71 deletions

View file

@ -7,7 +7,7 @@ using NodaTime;
namespace Foxnouns.Backend.Controllers.Authentication;
[Route("/api/v2/auth")]
public class AuthController(Config config, KeyCacheService keyCacheSvc, ILogger logger) : ApiControllerBase
public class AuthController(Config config, KeyCacheService keyCache, ILogger logger) : ApiControllerBase
{
private readonly ILogger _logger = logger.ForContext<AuthController>();
@ -19,7 +19,7 @@ public class AuthController(Config config, KeyCacheService keyCacheSvc, ILogger
config.DiscordAuth.Enabled,
config.GoogleAuth.Enabled,
config.TumblrAuth.Enabled);
var state = HttpUtility.UrlEncode(await keyCacheSvc.GenerateAuthStateAsync(ct));
var state = HttpUtility.UrlEncode(await keyCache.GenerateAuthStateAsync(ct));
string? discord = null;
if (config.DiscordAuth is { ClientId: not null, ClientSecret: not null })
discord =

View file

@ -15,10 +15,10 @@ public class DiscordAuthController(
ILogger logger,
IClock clock,
DatabaseContext db,
KeyCacheService keyCacheSvc,
AuthService authSvc,
RemoteAuthService remoteAuthSvc,
UserRendererService userRendererSvc) : ApiControllerBase
KeyCacheService keyCacheService,
AuthService authService,
RemoteAuthService remoteAuthService,
UserRendererService userRenderer) : ApiControllerBase
{
private readonly ILogger _logger = logger.ForContext<DiscordAuthController>();
@ -30,17 +30,17 @@ public class DiscordAuthController(
public async Task<IActionResult> CallbackAsync([FromBody] AuthController.CallbackRequest req, CancellationToken ct = default)
{
CheckRequirements();
await keyCacheSvc.ValidateAuthStateAsync(req.State, ct);
await keyCacheService.ValidateAuthStateAsync(req.State, ct);
var remoteUser = await remoteAuthSvc.RequestDiscordTokenAsync(req.Code, req.State, ct);
var user = await authSvc.AuthenticateUserAsync(AuthType.Discord, remoteUser.Id, ct: ct);
var remoteUser = await remoteAuthService.RequestDiscordTokenAsync(req.Code, req.State, ct);
var user = await authService.AuthenticateUserAsync(AuthType.Discord, remoteUser.Id, ct: ct);
if (user != null) return Ok(await GenerateUserTokenAsync(user,ct));
_logger.Debug("Discord user {Username} ({Id}) authenticated with no local account", remoteUser.Username,
remoteUser.Id);
var ticket = AuthUtils.RandomToken();
await keyCacheSvc.SetKeyAsync($"discord:{ticket}", remoteUser, Duration.FromMinutes(20), ct);
await keyCacheService.SetKeyAsync($"discord:{ticket}", remoteUser, Duration.FromMinutes(20), ct);
return Ok(new AuthController.CallbackResponse(false, ticket, remoteUser.Username));
}
@ -49,7 +49,7 @@ public class DiscordAuthController(
[ProducesResponseType<AuthController.AuthResponse>(StatusCodes.Status200OK)]
public async Task<IActionResult> RegisterAsync([FromBody] AuthController.OauthRegisterRequest req, CancellationToken ct = default)
{
var remoteUser = await keyCacheSvc.GetKeyAsync<RemoteAuthService.RemoteUser>($"discord:{req.Ticket}",ct:ct);
var remoteUser = await keyCacheService.GetKeyAsync<RemoteAuthService.RemoteUser>($"discord:{req.Ticket}",ct:ct);
if (remoteUser == null) throw new ApiError.BadRequest("Invalid ticket", "ticket", req.Ticket);
if (await db.AuthMethods.AnyAsync(a => a.AuthType == AuthType.Discord && a.RemoteId == remoteUser.Id, ct))
{
@ -58,7 +58,7 @@ public class DiscordAuthController(
throw new FoxnounsError("Discord ticket was issued for user with existing link");
}
var user = await authSvc.CreateUserWithRemoteAuthAsync(req.Username, AuthType.Discord, remoteUser.Id,
var user = await authService.CreateUserWithRemoteAuthAsync(req.Username, AuthType.Discord, remoteUser.Id,
remoteUser.Username, ct: ct);
return Ok(await GenerateUserTokenAsync(user, ct));
@ -70,7 +70,7 @@ public class DiscordAuthController(
_logger.Debug("Logging user {Id} in with Discord", user.Id);
var (tokenStr, token) =
authSvc.GenerateToken(user, frontendApp, ["*"], clock.GetCurrentInstant() + Duration.FromDays(365));
authService.GenerateToken(user, frontendApp, ["*"], clock.GetCurrentInstant() + Duration.FromDays(365));
db.Add(token);
_logger.Debug("Generated token {TokenId} for {UserId}", user.Id, token.Id);
@ -78,7 +78,7 @@ public class DiscordAuthController(
await db.SaveChangesAsync(ct);
return new AuthController.AuthResponse(
await userRendererSvc.RenderUserAsync(user, selfUser: user, renderMembers: false, ct: ct),
await userRenderer.RenderUserAsync(user, selfUser: user, renderMembers: false, ct: ct),
tokenStr,
token.ExpiresAt
);

View file

@ -12,10 +12,10 @@ namespace Foxnouns.Backend.Controllers.Authentication;
[Route("/api/v2/auth/email")]
public class EmailAuthController(
DatabaseContext db,
AuthService authSvc,
MailService mailSvc,
KeyCacheService keyCacheSvc,
UserRendererService userRendererSvc,
AuthService authService,
MailService mailService,
KeyCacheService keyCacheService,
UserRendererService userRenderer,
IClock clock,
ILogger logger) : ApiControllerBase
{
@ -26,30 +26,30 @@ public class EmailAuthController(
{
if (!req.Email.Contains('@')) throw new ApiError.BadRequest("Email is invalid", "email", req.Email);
var state = await keyCacheSvc.GenerateRegisterEmailStateAsync(req.Email, userId: null, ct);
var state = await keyCacheService.GenerateRegisterEmailStateAsync(req.Email, userId: null, ct);
if (await db.AuthMethods.AnyAsync(a => a.AuthType == AuthType.Email && a.RemoteId == req.Email, ct))
return NoContent();
mailSvc.QueueAccountCreationEmail(req.Email, state);
mailService.QueueAccountCreationEmail(req.Email, state);
return NoContent();
}
[HttpPost("callback")]
public async Task<IActionResult> CallbackAsync([FromBody] CallbackRequest req, CancellationToken ct = default)
{
var state = await keyCacheSvc.GetRegisterEmailStateAsync(req.State, ct);
var state = await keyCacheService.GetRegisterEmailStateAsync(req.State, ct);
if (state == null) throw new ApiError.BadRequest("Invalid state", "state", req.State);
if (state.ExistingUserId != null)
{
var authMethod =
await authSvc.AddAuthMethodAsync(state.ExistingUserId.Value, AuthType.Email, state.Email, ct: ct);
await authService.AddAuthMethodAsync(state.ExistingUserId.Value, AuthType.Email, state.Email, ct: ct);
_logger.Debug("Added email auth {AuthId} for user {UserId}", authMethod.Id, state.ExistingUserId);
return NoContent();
}
var ticket = AuthUtils.RandomToken();
await keyCacheSvc.SetKeyAsync($"email:{ticket}", state.Email, Duration.FromMinutes(20));
await keyCacheService.SetKeyAsync($"email:{ticket}", state.Email, Duration.FromMinutes(20));
return Ok(new AuthController.CallbackResponse(false, ticket, state.Email));
}
@ -58,7 +58,7 @@ public class EmailAuthController(
[ProducesResponseType<AuthController.AuthResponse>(StatusCodes.Status200OK)]
public async Task<IActionResult> LoginAsync([FromBody] LoginRequest req, CancellationToken ct = default)
{
var (user, authenticationResult) = await authSvc.AuthenticateUserAsync(req.Email, req.Password, ct);
var (user, authenticationResult) = await authService.AuthenticateUserAsync(req.Email, req.Password, ct);
if (authenticationResult == AuthService.EmailAuthenticationResult.MfaRequired)
throw new NotImplementedException("MFA is not implemented yet");
@ -67,7 +67,7 @@ public class EmailAuthController(
_logger.Debug("Logging user {Id} in with email and password", user.Id);
var (tokenStr, token) =
authSvc.GenerateToken(user, frontendApp, ["*"], clock.GetCurrentInstant() + Duration.FromDays(365));
authService.GenerateToken(user, frontendApp, ["*"], clock.GetCurrentInstant() + Duration.FromDays(365));
db.Add(token);
_logger.Debug("Generated token {TokenId} for {UserId}", token.Id, user.Id);
@ -75,7 +75,7 @@ public class EmailAuthController(
await db.SaveChangesAsync(ct);
return Ok(new AuthController.AuthResponse(
await userRendererSvc.RenderUserAsync(user, selfUser: user, renderMembers: false, ct: ct),
await userRenderer.RenderUserAsync(user, selfUser: user, renderMembers: false, ct: ct),
tokenStr,
token.ExpiresAt
));

View file

@ -9,8 +9,8 @@ namespace Foxnouns.Backend.Controllers;
[Route("/api/v2/debug")]
public class DebugController(
DatabaseContext db,
AuthService authSvc,
UserRendererService userRendererSvc,
AuthService authService,
UserRendererService userRenderer,
IClock clock,
ILogger logger) : ApiControllerBase
{
@ -22,17 +22,17 @@ public class DebugController(
{
_logger.Debug("Creating user with username {Username} and email {Email}", req.Username, req.Email);
var user = await authSvc.CreateUserWithPasswordAsync(req.Username, req.Email, req.Password);
var user = await authService.CreateUserWithPasswordAsync(req.Username, req.Email, req.Password);
var frontendApp = await db.GetFrontendApplicationAsync();
var (tokenStr, token) =
authSvc.GenerateToken(user, frontendApp, ["*"], clock.GetCurrentInstant() + Duration.FromDays(365));
authService.GenerateToken(user, frontendApp, ["*"], clock.GetCurrentInstant() + Duration.FromDays(365));
db.Add(token);
await db.SaveChangesAsync();
return Ok(new AuthController.AuthResponse(
await userRendererSvc.RenderUserAsync(user, selfUser: user, renderMembers: false),
await userRenderer.RenderUserAsync(user, selfUser: user, renderMembers: false),
tokenStr,
token.ExpiresAt
));

View file

@ -16,9 +16,9 @@ namespace Foxnouns.Backend.Controllers;
public class MembersController(
ILogger logger,
DatabaseContext db,
MemberRendererService memberRendererService,
MemberRendererService memberRenderer,
ISnowflakeGenerator snowflakeGenerator,
ObjectStorageService objectStorage,
ObjectStorageService objectStorageService,
IQueue queue) : ApiControllerBase
{
private readonly ILogger _logger = logger.ForContext<MembersController>();
@ -28,7 +28,7 @@ public class MembersController(
public async Task<IActionResult> GetMembersAsync(string userRef, CancellationToken ct = default)
{
var user = await db.ResolveUserAsync(userRef, CurrentToken, ct);
return Ok(await memberRendererService.RenderUserMembersAsync(user, CurrentToken));
return Ok(await memberRenderer.RenderUserMembersAsync(user, CurrentToken));
}
[HttpGet("{memberRef}")]
@ -36,7 +36,7 @@ public class MembersController(
public async Task<IActionResult> GetMemberAsync(string userRef, string memberRef, CancellationToken ct = default)
{
var member = await db.ResolveMemberAsync(userRef, memberRef, CurrentToken, ct);
return Ok(memberRendererService.RenderMember(member, CurrentToken));
return Ok(memberRenderer.RenderMember(member, CurrentToken));
}
[HttpPost("/api/v2/users/@me/members")]
@ -83,7 +83,7 @@ public class MembersController(
queue.QueueInvocableWithPayload<MemberAvatarUpdateInvocable, AvatarUpdatePayload>(
new AvatarUpdatePayload(member.Id, req.Avatar));
return Ok(memberRendererService.RenderMember(member, CurrentToken));
return Ok(memberRenderer.RenderMember(member, CurrentToken));
}
[HttpDelete("/api/v2/users/@me/members/{memberRef}")]
@ -101,7 +101,7 @@ public class MembersController(
await db.SaveChangesAsync(ct);
if (member.Avatar != null) await objectStorage.DeleteMemberAvatarAsync(member.Id, member.Avatar);
if (member.Avatar != null) await objectStorageService.DeleteMemberAvatarAsync(member.Id, member.Avatar);
return NoContent();
}

View file

@ -14,7 +14,7 @@ namespace Foxnouns.Backend.Controllers;
[Route("/api/v2/users")]
public class UsersController(
DatabaseContext db,
UserRendererService userRendererService,
UserRendererService userRenderer,
ISnowflakeGenerator snowflakeGenerator,
IQueue queue) : ApiControllerBase
{
@ -23,7 +23,7 @@ public class UsersController(
public async Task<IActionResult> GetUserAsync(string userRef, CancellationToken ct = default)
{
var user = await db.ResolveUserAsync(userRef, CurrentToken, ct);
return Ok(await userRendererService.RenderUserAsync(
return Ok(await userRenderer.RenderUserAsync(
user,
selfUser: CurrentUser,
token: CurrentToken,
@ -78,7 +78,7 @@ public class UsersController(
await db.SaveChangesAsync(ct);
await tx.CommitAsync(ct);
return Ok(await userRendererService.RenderUserAsync(user, CurrentUser, renderMembers: false,
return Ok(await userRenderer.RenderUserAsync(user, CurrentUser, renderMembers: false,
renderAuthMethods: false, ct: ct));
}

View file

@ -14,12 +14,12 @@ public static class AvatarObjectExtensions
private static readonly string[] ValidContentTypes = ["image/png", "image/webp", "image/jpeg"];
public static async Task
DeleteMemberAvatarAsync(this ObjectStorageService objectStorage, Snowflake id, string hash, CancellationToken ct = default) =>
await objectStorage.RemoveObjectAsync(MemberAvatarUpdateInvocable.Path(id, hash), ct);
DeleteMemberAvatarAsync(this ObjectStorageService objectStorageService, Snowflake id, string hash, CancellationToken ct = default) =>
await objectStorageService.RemoveObjectAsync(MemberAvatarUpdateInvocable.Path(id, hash), ct);
public static async Task
DeleteUserAvatarAsync(this ObjectStorageService objectStorage, Snowflake id, string hash, CancellationToken ct = default) =>
await objectStorage.RemoveObjectAsync(UserAvatarUpdateInvocable.Path(id, hash), ct);
DeleteUserAvatarAsync(this ObjectStorageService objectStorageService, Snowflake id, string hash, CancellationToken ct = default) =>
await objectStorageService.RemoveObjectAsync(UserAvatarUpdateInvocable.Path(id, hash), ct);
public static async Task<Stream> ConvertBase64UriToAvatar(this string uri)
{

View file

@ -7,31 +7,33 @@ namespace Foxnouns.Backend.Extensions;
public static class KeyCacheExtensions
{
public static async Task<string> GenerateAuthStateAsync(this KeyCacheService keyCacheSvc, CancellationToken ct = default)
public static async Task<string> GenerateAuthStateAsync(this KeyCacheService keyCacheService,
CancellationToken ct = default)
{
var state = AuthUtils.RandomToken();
await keyCacheSvc.SetKeyAsync($"oauth_state:{state}", "", Duration.FromMinutes(10), ct);
await keyCacheService.SetKeyAsync($"oauth_state:{state}", "", Duration.FromMinutes(10), ct);
return state;
}
public static async Task ValidateAuthStateAsync(this KeyCacheService keyCacheSvc, string state, CancellationToken ct = default)
public static async Task ValidateAuthStateAsync(this KeyCacheService keyCacheService, string state,
CancellationToken ct = default)
{
var val = await keyCacheSvc.GetKeyAsync($"oauth_state:{state}", delete: true, ct);
var val = await keyCacheService.GetKeyAsync($"oauth_state:{state}", delete: true, ct);
if (val == null) throw new ApiError.BadRequest("Invalid OAuth state");
}
public static async Task<string> GenerateRegisterEmailStateAsync(this KeyCacheService keyCacheSvc, string email,
public static async Task<string> GenerateRegisterEmailStateAsync(this KeyCacheService keyCacheService, string email,
Snowflake? userId = null, CancellationToken ct = default)
{
var state = AuthUtils.RandomToken();
await keyCacheSvc.SetKeyAsync($"email_state:{state}", new RegisterEmailState(email, userId),
await keyCacheService.SetKeyAsync($"email_state:{state}", new RegisterEmailState(email, userId),
Duration.FromDays(1), ct);
return state;
}
public static async Task<RegisterEmailState?> GetRegisterEmailStateAsync(this KeyCacheService keyCacheSvc,
public static async Task<RegisterEmailState?> GetRegisterEmailStateAsync(this KeyCacheService keyCacheService,
string state, CancellationToken ct = default) =>
await keyCacheSvc.GetKeyAsync<RegisterEmailState>($"email_state:{state}", delete: true, ct);
await keyCacheService.GetKeyAsync<RegisterEmailState>($"email_state:{state}", delete: true, ct);
}
public record RegisterEmailState(string Email, Snowflake? ExistingUserId);

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@ -6,7 +6,7 @@ using Foxnouns.Backend.Services;
namespace Foxnouns.Backend.Jobs;
public class MemberAvatarUpdateInvocable(DatabaseContext db, ObjectStorageService objectStorage, ILogger logger)
public class MemberAvatarUpdateInvocable(DatabaseContext db, ObjectStorageService objectStorageService, ILogger logger)
: IInvocable, IInvocableWithPayload<AvatarUpdatePayload>
{
private readonly ILogger _logger = logger.ForContext<UserAvatarUpdateInvocable>();
@ -36,13 +36,13 @@ public class MemberAvatarUpdateInvocable(DatabaseContext db, ObjectStorageServic
image.Seek(0, SeekOrigin.Begin);
var prevHash = member.Avatar;
await objectStorage.PutObjectAsync(Path(id, hash), image, "image/webp");
await objectStorageService.PutObjectAsync(Path(id, hash), image, "image/webp");
member.Avatar = hash;
await db.SaveChangesAsync();
if (prevHash != null && prevHash != hash)
await objectStorage.RemoveObjectAsync(Path(id, prevHash));
await objectStorageService.RemoveObjectAsync(Path(id, prevHash));
_logger.Information("Updated avatar for member {MemberId}", id);
}
@ -69,7 +69,7 @@ public class MemberAvatarUpdateInvocable(DatabaseContext db, ObjectStorageServic
return;
}
await objectStorage.RemoveObjectAsync(Path(member.Id, member.Avatar));
await objectStorageService.RemoveObjectAsync(Path(member.Id, member.Avatar));
member.Avatar = null;
await db.SaveChangesAsync();

View file

@ -6,7 +6,7 @@ using Foxnouns.Backend.Services;
namespace Foxnouns.Backend.Jobs;
public class UserAvatarUpdateInvocable(DatabaseContext db, ObjectStorageService objectStorage, ILogger logger)
public class UserAvatarUpdateInvocable(DatabaseContext db, ObjectStorageService objectStorageService, ILogger logger)
: IInvocable, IInvocableWithPayload<AvatarUpdatePayload>
{
private readonly ILogger _logger = logger.ForContext<UserAvatarUpdateInvocable>();
@ -36,13 +36,13 @@ public class UserAvatarUpdateInvocable(DatabaseContext db, ObjectStorageService
image.Seek(0, SeekOrigin.Begin);
var prevHash = user.Avatar;
await objectStorage.PutObjectAsync(Path(id, hash), image, "image/webp");
await objectStorageService.PutObjectAsync(Path(id, hash), image, "image/webp");
user.Avatar = hash;
await db.SaveChangesAsync();
if (prevHash != null && prevHash != hash)
await objectStorage.RemoveObjectAsync(Path(id, prevHash));
await objectStorageService.RemoveObjectAsync(Path(id, prevHash));
_logger.Information("Updated avatar for user {UserId}", id);
}
@ -69,7 +69,7 @@ public class UserAvatarUpdateInvocable(DatabaseContext db, ObjectStorageService
return;
}
await objectStorage.RemoveObjectAsync(Path(user.Id, user.Avatar));
await objectStorageService.RemoveObjectAsync(Path(user.Id, user.Avatar));
user.Avatar = null;
await db.SaveChangesAsync();

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@ -47,7 +47,7 @@ public class MetricsCollectionService(
}
}
public class BackgroundMetricsCollectionService(ILogger logger, MetricsCollectionService innerService)
public class BackgroundMetricsCollectionService(ILogger logger, MetricsCollectionService metricsCollectionService)
: BackgroundService
{
private readonly ILogger _logger = logger.ForContext<BackgroundMetricsCollectionService>();
@ -60,7 +60,7 @@ public class BackgroundMetricsCollectionService(ILogger logger, MetricsCollectio
while (await timer.WaitForNextTickAsync(ct))
{
_logger.Debug("Collecting metrics");
await innerService.CollectMetricsAsync(ct);
await metricsCollectionService.CollectMetricsAsync(ct);
}
}
}

View file

@ -4,7 +4,7 @@ using Minio.Exceptions;
namespace Foxnouns.Backend.Services;
public class ObjectStorageService(ILogger logger, Config config, IMinioClient minio)
public class ObjectStorageService(ILogger logger, Config config, IMinioClient minioClient)
{
private readonly ILogger _logger = logger.ForContext<ObjectStorageService>();
@ -13,7 +13,8 @@ public class ObjectStorageService(ILogger logger, Config config, IMinioClient mi
_logger.Debug("Deleting object at path {Path}", path);
try
{
await minio.RemoveObjectAsync(new RemoveObjectArgs().WithBucket(config.Storage.Bucket).WithObject(path),
await minioClient.RemoveObjectAsync(
new RemoveObjectArgs().WithBucket(config.Storage.Bucket).WithObject(path),
ct);
}
catch (InvalidObjectNameException)
@ -27,7 +28,7 @@ public class ObjectStorageService(ILogger logger, Config config, IMinioClient mi
_logger.Debug("Putting object at path {Path} with length {Length} and content type {ContentType}", path,
data.Length, contentType);
await minio.PutObjectAsync(new PutObjectArgs()
await minioClient.PutObjectAsync(new PutObjectArgs()
.WithBucket(config.Storage.Bucket)
.WithObject(path)
.WithObjectSize(data.Length)

View file

@ -7,7 +7,7 @@ using NodaTime;
namespace Foxnouns.Backend.Services;
public class UserRendererService(DatabaseContext db, MemberRendererService memberRendererService, Config config)
public class UserRendererService(DatabaseContext db, MemberRendererService memberRenderer, Config config)
{
public async Task<UserResponse> RenderUserAsync(User user, User? selfUser = null,
Token? token = null,
@ -39,7 +39,7 @@ public class UserRendererService(DatabaseContext db, MemberRendererService membe
return new UserResponse(
user.Id, user.Username, user.DisplayName, user.Bio, user.MemberTitle, AvatarUrlFor(user), user.Links,
user.Names, user.Pronouns, user.Fields, user.CustomPreferences,
renderMembers ? members.Select(memberRendererService.RenderPartialMember) : null,
renderMembers ? members.Select(memberRenderer.RenderPartialMember) : null,
renderAuthMethods
? authMethods.Select(a => new AuthenticationMethodResponse(
a.Id, a.AuthType, a.RemoteId,

View file

@ -2,10 +2,22 @@
## 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`).
- 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`).
### Naming
- Service values should be named the same as the type, but camel case, if the name of the service does *not*
in a verb (i.e. a variable of type `KeyCacheService` should be named `keyCacheService`).
If the name of the service *does* end in a verb, the final "service" should be omitted
(i.e. a variable of type `UserRendererService` should be named `userRenderer`).
- Interface values should be named the same as the type, but camel case, without the leading `I`
(i.e. a variable of type `ISnowflakeGenerator` should be named `snowflakeGenerator`).
- Values of type `DatabaseContext` should always be named `db`.
There are some exceptions to this. For example Sentry's `IHub` should be named `sentry` as the name `hub` isn't clear.
## TypeScript code style