[FA-55] User Service backend initial setup

FictionArchive.Service.UserService/GraphQL/Query.cs

@@ -1,3 +1,4 @@
+using System.Security.Claims;
 using FictionArchive.Service.UserService.Models.DTOs;
 using FictionArchive.Service.UserService.Services;
 using HotChocolate.Authorization;
@@ -7,9 +8,38 @@ namespace FictionArchive.Service.UserService.GraphQL;
 public class Query
 {
     [Authorize]
-    public IQueryable<UserDto> GetUsers(UserManagementService userManagementService)
+    public async Task<int> GetAvailableInvites(
+        UserManagementService userManagementService,
+        ClaimsPrincipal claimsPrincipal)
     {
-        return userManagementService.GetUsers().Select(user => new UserDto
+        var oAuthProviderId = claimsPrincipal.FindFirst("sub")?.Value;
+        if (string.IsNullOrEmpty(oAuthProviderId))
+        {
+            return 0;
+        }
+
+        var user = await userManagementService.GetUserByOAuthProviderIdAsync(oAuthProviderId);
+        return user?.AvailableInvites ?? 0;
+    }
+
+    [Authorize]
+    public async Task<UserDto?> GetCurrentUser(
+        UserManagementService userManagementService,
+        ClaimsPrincipal claimsPrincipal)
+    {
+        var oAuthProviderId = claimsPrincipal.FindFirst("sub")?.Value;
+        if (string.IsNullOrEmpty(oAuthProviderId))
+        {
+            return null;
+        }
+
+        var user = await userManagementService.GetUserByOAuthProviderIdAsync(oAuthProviderId);
+        if (user == null)
+        {
+            return null;
+        }
+
+        return new UserDto
         {
             Id = user.Id,
             CreatedTime = user.CreatedTime,
@@ -17,18 +47,8 @@ public class Query
             Username = user.Username,
             Email = user.Email,
             Disabled = user.Disabled,
-            Inviter = user.Inviter != null
-                ? new UserDto
-                {
-                    Id = user.Inviter.Id,
-                    CreatedTime = user.Inviter.CreatedTime,
-                    LastUpdatedTime = user.Inviter.LastUpdatedTime,
-                    Username = user.Inviter.Username,
-                    Email = user.Inviter.Email,
-                    Disabled = user.Inviter.Disabled,
-                    Inviter = null // Limit recursion to one level
-                }
-                : null
-        });
+            AvailableInvites = user.AvailableInvites,
+            InviterId = user.InviterId
+        };
     }
 }