1 files changed, 54 insertions, 0 deletions
diff --git a/src/Controllers/RoomController.php b/src/Controllers/RoomController.php
new file mode 100755
index 0000000..1067d29
--- /dev/null
+++ b/src/Controllers/RoomController.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Controllers;
+
+use App\Database;
+use App\Errors\AppException;
+use App\Errors\ErrorCode;
+use App\Support\Parser;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpFoundation\JsonResponse;
+
+class RoomController
+{
+  /**
+   * GET /_matrix/client/v3/directory/room/{roomAlias}
+   *
+   * @see https://spec.matrix.org/v1.15/client-server-api/#get_matrixclientv3directoryroomroomalias
+   */
+  public function resolveAlias(Request $request): Response
+  {
+    $alias = $request->attributes->get("roomAlias");
+
+    $roomAlias = Parser::parseRoomAlias($alias); # TODO: on parse error => 400
+    $roomId = null;
+
+    if ($roomAlias["server"] != $_ENV["DOMAIN"]) {
+      # TODO: federation API resolve
+      $roomId = -1;
+    }
+    else {
+      $room = Database::getInstance()->query(<<<SQL
+        select id from rooms where name = :name
+      SQL, [
+        "name" => $roomAlias["name"],
+      ])->fetch();
+
+      $roomId = $room["id"] ?? null;
+    }
+
+    if (empty($roomId)) {
+      throw new AppException(
+        ErrorCode::NOT_FOUND,
+        "Room alias $alias not found.",
+        Response::HTTP_NOT_FOUND
+      );
+    }
+
+    return new JsonResponse([
+      "room_id" => $roomId,
+      "servers" => [],
+    ]);
+  }
+}