feat(identity): add /users/@me endpoint

Foxchat.Identity/Controllers/UsersController.cs

@@ -1,12 +1,17 @@
 using Foxchat.Core;
 using Foxchat.Core.Models;
 using Foxchat.Identity.Database;
+using Foxchat.Identity.Database.Models;
+using Foxchat.Identity.Middleware;
+using Foxchat.Identity.Utils;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Newtonsoft.Json;
 
 namespace Foxchat.Identity.Controllers;
 
 [ApiController]
+[ClientAuthenticate]
 [Route("/_fox/ident/users")]
 public class UsersController(ILogger logger, InstanceConfig config, IdentityContext db) : ControllerBase
 {
@@ -18,4 +23,30 @@ public class UsersController(ILogger logger, InstanceConfig config, IdentityCont
 
         return Ok(new Users.User(user.Id.ToString(), user.Username, config.Domain, null));
     }
+
+    [HttpGet("@me")]
+    [Authorize("identify")]
+    public IActionResult GetMe()
+    {
+        var acct = HttpContext.GetAccountOrThrow();
+        var token = HttpContext.GetToken()!;
+        var showEmail = token.Scopes.ExpandScopes().Contains("email");
+
+        return Ok(new MeUser(
+            acct.Id,
+            acct.Username,
+            acct.Role,
+            null,
+            showEmail ? acct.Email : null
+        ));
+    }
+
+    public record MeUser(
+        Ulid Id,
+        string Username,
+        Account.AccountRole Role,
+        string? AvatarUrl,
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
+        string? Email
+    );
 }