from sqlalchemy import Integer, String, DateTime, ForeignKey, Text
from sqlalchemy.sql import func
from sqlalchemy.orm import Mapped, mapped_column, relationship
from src.apps.base.models.base import Base
from src.apps.invoices.models.invoice import invoice_reminder_map


class Reminder(Base):
    """
    Merchant Note Model: ORM class for Merchant Note Entity
    """

    __tablename__ = "reminders"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True, autoincrement=True)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    frequency_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    reminder_date: Mapped[DateTime | None] = mapped_column(DateTime, nullable=True)
    created_at: Mapped[DateTime] = mapped_column(DateTime, server_default=func.now())
    updated_at: Mapped[DateTime | None] = mapped_column(DateTime, nullable=True, onupdate=func.now())
    deleted_at: Mapped[DateTime | None] = mapped_column(DateTime, nullable=True)

    user_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("users.id"), nullable=True)
    user: Mapped["User"] = relationship("User", foreign_keys=[user_id])

    customer_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("customers.id"), nullable=True)
    customer: Mapped["Customer"] = relationship("Customer", foreign_keys=[customer_id])

    payer_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("customer_contacts.id"), nullable=True)
    payer: Mapped["CustomerContact"] = relationship("CustomerContact", foreign_keys=[payer_id])

    approver_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("customer_contacts.id"), nullable=True)
    approver: Mapped["CustomerContact"] = relationship("CustomerContact", foreign_keys=[approver_id])

    invoice: Mapped[list["Invoice"]] = relationship(
        "Invoice", secondary=invoice_reminder_map, back_populates="reminders"
    )