from __future__ import annotations
from datetime import datetime
from typing import Optional, TYPE_CHECKING
from sqlalchemy import Boolean, DateTime, ForeignKey, Integer, 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.merchants.models.merchant import Merchant
    from src.apps.feature_control.models.feature_plan import FeaturePlan


class MerchantFeaturePlan(Base):
    __tablename__ = "merchant_feature_plans"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    merchant_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("merchants.id"), nullable=False, index=True
    )
    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)
    assigned_by: Mapped[Optional[int]] = mapped_column(
        Integer, ForeignKey("users.id"), nullable=True
    )
    assigned_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )
    notes: Mapped[Optional[str]] = mapped_column(Text, nullable=True)

    merchant: Mapped["Merchant"] = relationship("Merchant")
    plan: Mapped["FeaturePlan"] = relationship("FeaturePlan", back_populates="merchant_assignments")