from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, JSON, Text, Index
from sqlalchemy.sql import func
from app.db.base import Base

class Job(Base):
    __tablename__ = "jobs"
    __table_args__ = (
        Index('ix_jobs_status_run_after', 'status', 'run_after'),
    )

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    type = Column(String, nullable=False)  # send_campaign, import_google, etc.
    payload_json = Column(JSON, nullable=False)
    status = Column(String, default="pending", nullable=False)  # pending, running, completed, failed
    attempts = Column(Integer, default=0, nullable=False)
    run_after = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
    last_error = Column(Text, nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())