From fe1cf7ce8affa26f23cef47618736bf786540a74 Mon Sep 17 00:00:00 2001
From: sam <sam@vulpine.solutions>
Date: Wed, 25 Dec 2024 16:04:32 -0500
Subject: [PATCH] feat: GET /api/v1/users/@me

---
 .../Controllers/V1/V1ReadController.cs        |  9 +++
 Foxnouns.Backend/Dto/V1/User.cs               | 34 ++++++++
 .../Services/V1/UsersV1Service.cs             | 78 +++++++++++++++++++
 3 files changed, 121 insertions(+)

diff --git a/Foxnouns.Backend/Controllers/V1/V1ReadController.cs b/Foxnouns.Backend/Controllers/V1/V1ReadController.cs
index 5f69c20..327f03e 100644
--- a/Foxnouns.Backend/Controllers/V1/V1ReadController.cs
+++ b/Foxnouns.Backend/Controllers/V1/V1ReadController.cs
@@ -15,6 +15,7 @@
 using Foxnouns.Backend.Database;
 using Foxnouns.Backend.Database.Models;
 using Foxnouns.Backend.Dto.V1;
+using Foxnouns.Backend.Middleware;
 using Foxnouns.Backend.Services.V1;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
@@ -28,6 +29,14 @@ public class V1ReadController(
     DatabaseContext db
 ) : ApiControllerBase
 {
+    [HttpGet("users/@me")]
+    [Authorize("identify")]
+    public async Task<IActionResult> GetMeAsync(CancellationToken ct = default)
+    {
+        User user = await usersV1Service.ResolveUserAsync("@me", CurrentToken, ct);
+        return Ok(await usersV1Service.RenderCurrentUserAsync(user, ct));
+    }
+
     [HttpGet("users/{userRef}")]
     public async Task<IActionResult> GetUserAsync(string userRef, CancellationToken ct = default)
     {
diff --git a/Foxnouns.Backend/Dto/V1/User.cs b/Foxnouns.Backend/Dto/V1/User.cs
index c212d97..e80a355 100644
--- a/Foxnouns.Backend/Dto/V1/User.cs
+++ b/Foxnouns.Backend/Dto/V1/User.cs
@@ -20,6 +20,7 @@ using Foxnouns.Backend.Services.V1;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Serialization;
+using NodaTime;
 
 namespace Foxnouns.Backend.Dto.V1;
 
@@ -42,6 +43,39 @@ public record UserResponse(
     Dictionary<Guid, CustomPreference> CustomPreferences
 );
 
+public record CurrentUserResponse(
+    string Id,
+    Snowflake IdNew,
+    string Sid,
+    string Name,
+    string? DisplayName,
+    string? Bio,
+    string? MemberTitle,
+    string? Avatar,
+    string[] Links,
+    FieldEntry[] Names,
+    PronounEntry[] Pronouns,
+    ProfileField[] Fields,
+    PrideFlag[] Flags,
+    PartialMember[] Members,
+    int? UtcOffset,
+    Dictionary<Guid, CustomPreference> CustomPreferences,
+    Instant CreatedAt,
+    string? Timezone,
+    bool IsAdmin,
+    bool ListPrivate,
+    Instant LastSidReroll,
+    string? Discord,
+    string? DiscordUsername,
+    string? Google,
+    string? GoogleUsername,
+    string? Tumblr,
+    string? TumblrUsername,
+    string? Fediverse,
+    string? FediverseUsername,
+    string? FediverseInstance
+);
+
 public record CustomPreference(
     string Icon,
     string Tooltip,
diff --git a/Foxnouns.Backend/Services/V1/UsersV1Service.cs b/Foxnouns.Backend/Services/V1/UsersV1Service.cs
index 34163a6..1f2ad79 100644
--- a/Foxnouns.Backend/Services/V1/UsersV1Service.cs
+++ b/Foxnouns.Backend/Services/V1/UsersV1Service.cs
@@ -122,6 +122,84 @@ public class UsersV1Service(DatabaseContext db)
         );
     }
 
+    public async Task<CurrentUserResponse> RenderCurrentUserAsync(
+        User user,
+        CancellationToken ct = default
+    )
+    {
+        List<Member> members = await db
+            .Members.Where(m => m.UserId == user.Id)
+            .OrderBy(m => m.Name)
+            .ToListAsync(ct);
+
+        List<UserFlag> flags = await db
+            .UserFlags.Where(f => f.UserId == user.Id)
+            .OrderBy(f => f.Id)
+            .ToListAsync(ct);
+
+        int? utcOffset = null;
+        if (
+            user.Timezone != null
+            && TimeZoneInfo.TryFindSystemTimeZoneById(user.Timezone, out TimeZoneInfo? tz)
+        )
+        {
+            utcOffset = (int)tz.GetUtcOffset(DateTimeOffset.UtcNow).TotalSeconds;
+        }
+
+        List<AuthMethod> authMethods = await db
+            .AuthMethods.Include(a => a.FediverseApplication)
+            .Where(a => a.UserId == user.Id)
+            .OrderBy(a => a.Id)
+            .ToListAsync(ct);
+
+        AuthMethod? discord = authMethods.FirstOrDefault(a => a.AuthType is AuthType.Discord);
+        AuthMethod? google = authMethods.FirstOrDefault(a => a.AuthType is AuthType.Google);
+        AuthMethod? tumblr = authMethods.FirstOrDefault(a => a.AuthType is AuthType.Tumblr);
+        AuthMethod? fediverse = authMethods.FirstOrDefault(a => a.AuthType is AuthType.Fediverse);
+
+        return new CurrentUserResponse(
+            user.LegacyId,
+            user.Id,
+            user.Sid,
+            user.Username,
+            user.DisplayName,
+            user.Bio,
+            user.MemberTitle,
+            user.Avatar,
+            user.Links,
+            Names: FieldEntry.FromEntries(user.Names, user.CustomPreferences),
+            Pronouns: PronounEntry.FromPronouns(user.Pronouns, user.CustomPreferences),
+            Fields: ProfileField.FromFields(user.Fields, user.CustomPreferences),
+            Flags: flags
+                .Where(f => f.PrideFlag.Hash != null)
+                .Select(f => new PrideFlag(
+                    f.PrideFlag.LegacyId,
+                    f.PrideFlag.Id,
+                    f.PrideFlag.Hash!,
+                    f.PrideFlag.Name,
+                    f.PrideFlag.Description
+                ))
+                .ToArray(),
+            Members: members.Select(m => RenderPartialMember(m, user.CustomPreferences)).ToArray(),
+            utcOffset,
+            CustomPreferences: RenderCustomPreferences(user.CustomPreferences),
+            user.Id.Time,
+            user.Timezone,
+            user.Role is UserRole.Admin,
+            user.ListHidden,
+            user.LastSidReroll,
+            discord?.RemoteId,
+            discord?.RemoteUsername,
+            google?.RemoteId,
+            google?.RemoteUsername,
+            tumblr?.RemoteId,
+            tumblr?.RemoteUsername,
+            fediverse?.RemoteId,
+            fediverse?.RemoteUsername,
+            fediverse?.FediverseApplication?.Domain
+        );
+    }
+
     private static Dictionary<Guid, CustomPreference> RenderCustomPreferences(
         Dictionary<Snowflake, User.CustomPreference> customPreferences
     ) =>