✨ Chat controller

DysonNetwork.Sphere/Realm/RealmChatController.cs

@@ -0,0 +1,38 @@
+using DysonNetwork.Sphere.Chat;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace DysonNetwork.Sphere.Realm;
+
+[ApiController]
+[Route("/realm/{slug}")]
+public class RealmChatController(AppDatabase db) : ControllerBase
+{
+    [HttpGet("/chat")]
+    [Authorize]
+    public async Task<ActionResult<List<ChatRoom>>> ListRealmChat(string slug)
+    {
+        var currentUser = HttpContext.Items["CurrentUser"] as Account.Account;
+
+        var realm = await db.Realms
+            .Where(r => r.Slug == slug)
+            .FirstOrDefaultAsync();
+        if (realm is null) return NotFound();
+        if (!realm.IsPublic)
+        {
+            if (currentUser is null) return Unauthorized();
+            var member = await db.ChatMembers
+                .Where(m => m.ChatRoomId == realm.Id)
+                .Where(m => m.AccountId == currentUser.Id)
+                .FirstOrDefaultAsync();
+            if (member is null) return BadRequest("You need at least one member to view the realm's chat.");
+        }
+
+        var chatRooms = await db.ChatRooms
+            .Where(c => c.RealmId == realm.Id)
+            .ToListAsync();
+        
+        return Ok(chatRooms);
+    }
+}