bot rafactor and bugfix

app/models/channel.py

@@ -3,7 +3,8 @@ from datetime import datetime
 from sqlalchemy import ForeignKey, String, BigInteger, Boolean, UniqueConstraint, func, DateTime
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 from app.db.session import Base
-from app.models.user import User  # Добавляем импорт User
+from app.models.user import User
+from app.models.bot import Bot
 
 class Channel(Base):
     __tablename__ = "channels"
@@ -11,12 +12,14 @@ class Channel(Base):
 
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
     owner_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
-    chat_id: Mapped[int] = mapped_column(BigInteger, index=True)
+    bot_id: Mapped[int] = mapped_column(ForeignKey("bots.id", ondelete="CASCADE"))
+    chat_id: Mapped[int] = mapped_column(index=True)
     title: Mapped[str | None] = mapped_column(String(128))
     username: Mapped[str | None] = mapped_column(String(64))
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
 
     owner = relationship("User")
+    bot = relationship("Bot", back_populates="channels")
 
 class BotChannel(Base):
     __tablename__ = "bot_channels"