from __future__ import annotations

from datetime import datetime
from typing import List, Optional

from sqlalchemy import Boolean, DateTime, String, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship
from sqlalchemy.sql import func

from .database import Base


class Schedule(Base):
    __tablename__ = "schedules"

    id: Mapped[str] = mapped_column(String, primary_key=True)
    name: Mapped[str] = mapped_column(String, nullable=False)
    playbook: Mapped[str] = mapped_column(String, nullable=False)
    target: Mapped[str] = mapped_column(String, nullable=False)
    schedule_type: Mapped[str] = mapped_column(String, nullable=False)
    schedule_time: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True))
    recurrence_type: Mapped[Optional[str]] = mapped_column(String)
    recurrence_time: Mapped[Optional[str]] = mapped_column(String)
    recurrence_days: Mapped[Optional[str]] = mapped_column(Text)
    cron_expression: Mapped[Optional[str]] = mapped_column(String)
    enabled: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    tags: Mapped[Optional[str]] = mapped_column(Text)
    next_run: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True))
    last_run: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True))
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now())
    deleted_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True))

    runs: Mapped[List["ScheduleRun"]] = relationship(
        "ScheduleRun", back_populates="schedule", cascade="all, delete-orphan"
    )
    logs: Mapped[List["Log"]] = relationship("Log", back_populates="schedule")

    def __repr__(self) -> str:  # pragma: no cover - debug helper
        return f"<Schedule id={self.id} name={self.name} target={self.target}>"