# FILE: src/apps/billing/models/invoice_payment.py
from __future__ import annotations

import datetime as dt
from decimal import Decimal
from typing import TYPE_CHECKING, Optional
from uuid import UUID

from sqlalchemy import Date, ForeignKey, Numeric, String, Text
from sqlalchemy.dialects.postgresql import UUID as PG_UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from src.database.base import TenantModel

if TYPE_CHECKING:
    from src.apps.billing.models.invoice import Invoice


class InvoicePayment(TenantModel):
    __tablename__ = "invoice_payments"

    # Override tenant_id with explicit FK
    tenant_id: Mapped[UUID] = mapped_column(
        PG_UUID(as_uuid=True),
        ForeignKey("accounts.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )

    invoice_id: Mapped[UUID] = mapped_column(
        PG_UUID(as_uuid=True),
        ForeignKey("invoices.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    recorded_by: Mapped[Optional[UUID]] = mapped_column(
        PG_UUID(as_uuid=True),
        ForeignKey("users.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )

    amount: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
    method: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)
    received_on: Mapped[Optional[dt.date]] = mapped_column(Date, nullable=True)
    receipt_number: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
    notes: Mapped[Optional[str]] = mapped_column(Text, nullable=True)

    # Relationships
    invoice: Mapped["Invoice"] = relationship(
        "Invoice", back_populates="payments"
    )