Realize everything you were doing was a mistake and rollback

royalnet/commands/sync.py

@@ -0,0 +1,26 @@
+import typing
+from telegram import Update, User
+from ..utils import Command, CommandArgs, Call
+from ..database.tables import Royal
+
+
+class SyncCommand(Command):
+
+    command_name = "sync"
+    command_title = "Connect your current account to Royalnet"
+
+    require_alchemy_tables = [Royal]
+
+    async def common(self, call: Call, args: CommandArgs):
+        raise NotImplementedError()
+
+    async def telegram(self, call: Call, args: CommandArgs):
+        update: Update = args.kwargs["update"]
+        # Find the user
+        user: typing.Optional[User] = update.effective_user
+        if user is None:
+            raise ValueError("Trying to sync a None user.")
+        # Find the Royal
+        royal = call.session.query(call.interface_alchemy.Royal).filter_by(username=args[0]).one_or_none()
+        if royal is None:
+            await call.reply("⚠️ Non esiste alcun account Royalnet con quel nome.")

royalnet/utils/call.py

@@ -2,7 +2,8 @@ import typing
 import asyncio
 from ..network.messages import Message
 from .command import Command, CommandArgs
-from ..database import Alchemy
+if typing.TYPE_CHECKING:
+    from ..database import Alchemy
 
 
 loop = asyncio.get_event_loop()
@@ -14,7 +15,7 @@ class Call:
     # These parameters / methods should be overridden
     interface_name = NotImplemented
     interface_obj = NotImplemented
-    interface_alchemy: Alchemy = NotImplemented
+    interface_alchemy: "Alchemy" = NotImplemented
 
     async def reply(self, text: str):
         """Send a text message to the channel the call was made."""
@@ -36,7 +37,7 @@ class Call:
     async def session_init(self):
         if not self.command.require_alchemy_tables:
             return
-        self.session = await loop.run_in_executor(self.interface_alchemy.Session)
+        self.session = await loop.run_in_executor(None, self.interface_alchemy.Session)
 
     async def session_end(self):
         if not self.session:
@@ -52,5 +53,5 @@ class Call:
         try:
             result = await coroutine(self.command, self, CommandArgs(*self.args, **self.kwargs))
         finally:
-            self.session.close()
+            await self.session_end()
         return result