rewrite: New private Room system.

src/modules/rooms/data.py

@@ -0,0 +1,48 @@
+from data import Registry, RowModel
+from data.columns import Integer, Timestamp, String
+
+
+class RoomData(Registry):
+    class Room(RowModel):
+        """
+        CREATE TABLE rented_rooms(
+          channelid BIGINT PRIMARY KEY,
+          guildid BIGINT NOT NULL,
+          ownerid BIGINT NOT NULL,
+          coin_balance INTEGER NOT NULL DEFAULT 0,
+          name TEXT,
+          created_at TIMESTAMPTZ DEFAULT now(),
+          last_tick TIMESTAMPTZ,
+          deleted_at TIMESTAMPTZ,
+          FOREIGN KEY (guildid, ownerid) REFERENCES members (guildid, userid) ON DELETE CASCADE
+        );
+        CREATE INDEX rented_owners ON rented (guildid, ownerid);
+        """
+        _tablename_ = 'rented_rooms'
+
+        channelid = Integer(primary=True)
+        guildid = Integer()
+        ownerid = Integer()
+        coin_balance = Integer()
+        name = String()
+        created_at = Timestamp()
+        last_tick = Timestamp()
+        deleted_at = Timestamp()
+
+    class RoomMember(RowModel):
+        """
+        Schema
+        ------
+        CREATE TABLE rented_members(
+          channelid BIGINT NOT NULL REFERENCES rented(channelid) ON DELETE CASCADE,
+          userid BIGINT NOT NULL,
+          contribution INTEGER NOT NULL DEFAULT 0
+        );
+        CREATE INDEX rented_members_channels ON rented_members (channelid);
+        CREATE INDEX rented_members_users ON rented_members (userid);
+        """
+        _tablename_ = 'rented_members'
+
+        channelid = Integer(primary=True)
+        userid = Integer(primary=True)
+        contribution = Integer()