Add a flag to indicate if the requesting user can unbridge the portal

mautrix_telegram/portal.py

@@ -184,6 +184,21 @@ class Portal:
             return tgid not in self.filter_list
         return True
 
+    # endregion
+    # region Permission checks
+
+    async def can_user_perform(self, user: 'u.User', event: str, default: int = 50) -> bool:
+        if user.is_admin:
+            return True
+        try:
+            await self.main_intent.get_power_levels(self.mxid)
+        except MatrixRequestError:
+            return False
+        return self.main_intent.state_store.has_power_level(
+            self.mxid, user.mxid,
+            event=f"net.maunium.telegram.{event}",
+            default=default)
+
     # endregion
     # region Deduplication
 

mautrix_telegram/web/provisioning/__init__.py

@@ -74,6 +74,8 @@ class ProvisioningAPI(AuthAPI):
         if not portal:
             return self.get_error_response(404, "portal_not_found",
                                            "Portal with given Matrix ID not found.")
+        user, _ = await self.get_user(request.query.get("user_id", None), expect_logged_in=None,
+                                        require_puppeting=False)
         return web.json_response({
             "mxid": portal.mxid,
             "chat_id": get_peer_id(portal.peer),
@@ -82,6 +84,7 @@ class ProvisioningAPI(AuthAPI):
             "about": portal.about,
             "username": portal.username,
             "megagroup": portal.megagroup,
+            "can_unbridge": (await portal.can_user_perform(user, "unbridge")) if user else False,
         })
 
     async def get_portal_by_tgid(self, request: web.Request) -> web.Response:
@@ -98,6 +101,8 @@ class ProvisioningAPI(AuthAPI):
         if not portal:
             return self.get_error_response(404, "portal_not_found",
                                            "Portal to given Telegram chat not found.")
+        user, _ = await self.get_user(request.query.get("user_id", None), expect_logged_in=None,
+                                        require_puppeting=False)
         return web.json_response({
             "mxid": portal.mxid,
             "chat_id": get_peer_id(portal.peer),
@@ -106,6 +111,7 @@ class ProvisioningAPI(AuthAPI):
             "about": portal.about,
             "username": portal.username,
             "megagroup": portal.megagroup,
+            "can_unbridge": (await portal.can_user_perform(user, "unbridge")) if user else False,
         })
 
     async def connect_chat(self, request: web.Request) -> web.Response:

mautrix_telegram/web/provisioning/spec.yaml

@@ -57,6 +57,11 @@ paths:
           required: true
           type: string
           pattern: "![^/]+"
+        - name: user_id
+          in: query
+          description: Optional Matrix user ID to check if the user has permissions to do bridging.
+          required: false
+          type: string
   /portal/{chat_id}:
     get:
       operationId: get_portal_by_tgid
@@ -102,6 +107,11 @@ paths:
           required: true
           type: integer
           pattern: "-[0-9]+"
+        - name: user_id
+          in: query
+          description: Optional Matrix user ID to check if the user has permissions to do bridging.
+          required: false
+          type: string
   /portal/{room_id}/connect/{chat_id}:
     post:
       operationId: connect_portal
@@ -829,6 +839,9 @@ definitions:
         type: string
       about:
         type: string
+      can_unbridge:
+        type: boolean
+        description: If a user ID was provided with the request, this will indicate whether or not the user can unbridge the room.
 
   AuthSuccess:
     type: object