[backend/api] Add relations to user profile response (ISH-347)

Iceshrimp.Backend/Controllers/Renderers/UserProfileRenderer.cs

@@ -10,12 +10,24 @@ public class UserProfileRenderer(DatabaseContext db)
 {
 	public async Task<UserProfileResponse> RenderOne(User user, User? localUser, UserRendererDto? data = null)
 	{
-		var isFollowing  = (data?.Following ?? await GetFollowing([user], localUser)).Contains(user.Id);
+		(data?.Relations ?? await GetRelations([user], localUser)).TryGetValue(user.Id, out var relations);
+		relations ??= new RelationData
+		{
+			UserId        = user.Id,
+			IsSelf        = user.Id == localUser?.Id,
+			IsFollowing   = false,
+			IsFollowedBy  = false,
+			IsBlocking    = false,
+			IsMuting      = false,
+			IsRequested   = false,
+			IsRequestedBy = false
+		};
+
 		var ffVisibility = user.UserProfile?.FFVisibility ?? UserProfile.UserProfileFFVisibility.Public;
 		var followers = ffVisibility switch
 		{
 			UserProfile.UserProfileFFVisibility.Public    => user.FollowersCount,
-			UserProfile.UserProfileFFVisibility.Followers => isFollowing ? user.FollowersCount : null,
+			UserProfile.UserProfileFFVisibility.Followers => relations.IsFollowing ? user.FollowersCount : null,
 			UserProfile.UserProfileFFVisibility.Private   => (int?)null,
 			_                                             => throw new ArgumentOutOfRangeException()
 		};
@@ -23,7 +35,7 @@ public class UserProfileRenderer(DatabaseContext db)
 		var following = ffVisibility switch
 		{
 			UserProfile.UserProfileFFVisibility.Public    => user.FollowingCount,
-			UserProfile.UserProfileFFVisibility.Followers => isFollowing ? user.FollowingCount : null,
+			UserProfile.UserProfileFFVisibility.Followers => relations.IsFollowing ? user.FollowingCount : null,
 			UserProfile.UserProfileFFVisibility.Private   => (int?)null,
 			_                                             => throw new ArgumentOutOfRangeException()
 		};
@@ -43,27 +55,42 @@ public class UserProfileRenderer(DatabaseContext db)
 			Fields    = fields?.ToList(),
 			Location  = user.UserProfile?.Location,
 			Followers = followers,
-			Following = following
+			Following = following,
+			Relations = relations
 		};
 	}
 
-	private async Task<List<string>> GetFollowing(IEnumerable<User> users, User? localUser)
+	private async Task<Dictionary<string, RelationData>> GetRelations(IEnumerable<User> users, User? localUser)
 	{
+		var ids = users.Select(p => p.Id).ToList();
+		if (ids.Count == 0) return [];
 		if (localUser == null) return [];
-		return await db.Followings.Where(p => p.Follower == localUser && users.Contains(p.Followee))
+
-		               .Select(p => p.FolloweeId)
+		return await db.Users
-		               .ToListAsync();
+		               .Where(p => ids.Contains(p.Id))
+		               .Select(p => new RelationData
+		               {
+			               UserId        = p.Id,
+			               IsSelf        = p.Id == localUser.Id,
+			               IsFollowing   = localUser.IsFollowing(p),
+			               IsFollowedBy  = localUser.IsFollowedBy(p),
+			               IsBlocking    = localUser.IsBlocking(p),
+			               IsMuting      = localUser.IsMuting(p),
+			               IsRequested   = localUser.IsRequested(p),
+			               IsRequestedBy = localUser.IsRequestedBy(p)
+		               })
+		               .ToDictionaryAsync(p => p.UserId, p => p);
 	}
 
 	public async Task<IEnumerable<UserProfileResponse>> RenderMany(IEnumerable<User> users, User? localUser)
 	{
 		var userList = users.ToList();
-		var data     = new UserRendererDto { Following = await GetFollowing(userList, localUser) };
+		var data     = new UserRendererDto { Relations = await GetRelations(userList, localUser) };
 		return await userList.Select(p => RenderOne(p, localUser, data)).AwaitAllAsync();
 	}
 
 	public class UserRendererDto
 	{
-		public List<string>? Following;
+		public Dictionary<string, RelationData>? Relations;
 	}
 }

Iceshrimp.Backend/Controllers/UserController.cs

@@ -14,6 +14,8 @@ using Microsoft.EntityFrameworkCore;
 namespace Iceshrimp.Backend.Controllers;
 
 [ApiController]
+[Authenticate]
+[Authorize]
 [EnableRateLimiting("sliding")]
 [Route("/api/iceshrimp/users/{id}")]
 [Produces(MediaTypeNames.Application.Json)]
@@ -51,7 +53,6 @@ public class UserController(
 	}
 
 	[HttpGet("notes")]
-	[Authenticate]
 	[LinkPagination(20, 80)]
 	[ProducesResponseType(StatusCodes.Status200OK, Type = typeof(IEnumerable<NoteResponse>))]
 	[ProducesResponseType(StatusCodes.Status404NotFound, Type = typeof(ErrorResponse))]

Iceshrimp.Shared/Schemas/UserProfileResponse.cs

@@ -1,3 +1,5 @@
+using System.Text.Json.Serialization;
+
 namespace Iceshrimp.Shared.Schemas;
 
 public class UserProfileResponse
@@ -9,6 +11,33 @@ public class UserProfileResponse
 	public required string?                 Bio       { get; set; }
 	public required int?                    Followers { get; set; }
 	public required int?                    Following { get; set; }
+	public required RelationData            Relations { get; set; }
+}
+
+public class RelationData
+{
+	[JsonIgnore] public required string UserId;
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsSelf { get; set; }
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsFollowing { get; set; }
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsFollowedBy { get; set; }
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsRequested { get; set; }
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsRequestedBy { get; set; }
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsBlocking { get; set; }
+
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+	public required bool IsMuting { get; set; }
 }
 
 public class UserProfileField