from __future__ import annotations
from datetime import datetime
from typing import Optional, TYPE_CHECKING
from sqlalchemy import Boolean, DateTime, ForeignKey, Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship
from sqlalchemy.sql import func
from src.apps.base.models.base import Base

if TYPE_CHECKING:
    from src.apps.pricing_control.models.pricing_template import PricingTemplate
    from src.apps.feature_control.models.feature_plan import FeaturePlan
    from src.apps.users.models.user import User


class Plan(Base):
    __tablename__ = "plans"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    description: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    pricing_template_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("pricing_templates.id"), nullable=False, index=True
    )
    feature_plan_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("feature_plans.id"), nullable=False, index=True
    )
    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True, index=True)
    created_by_user_id: Mapped[Optional[int]] = mapped_column(
        Integer, ForeignKey("users.id"), nullable=True
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )
    updated_at: Mapped[Optional[datetime]] = mapped_column(
        DateTime(timezone=True), nullable=True, onupdate=func.now()
    )
    deleted_at: Mapped[Optional[datetime]] = mapped_column(
        DateTime(timezone=True), nullable=True
    )

    pricing_template: Mapped["PricingTemplate"] = relationship(
        "PricingTemplate", foreign_keys=[pricing_template_id], lazy="select"
    )
    feature_plan: Mapped["FeaturePlan"] = relationship(
        "FeaturePlan", foreign_keys=[feature_plan_id], lazy="select"
    )
    created_by: Mapped[Optional["User"]] = relationship(
        "User", foreign_keys=[created_by_user_id], lazy="select"
    )