# FILE: src/apps/sales/models/activity.py
from __future__ import annotations

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

from sqlalchemy import DateTime, ForeignKey, 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.sales.models.opportunity import Opportunity


class Activity(TenantModel):
    """Sales activity / interaction log entry linked to an Opportunity."""

    __tablename__ = "activities"

    tenant_id: Mapped[UUID] = mapped_column(
        PG_UUID(as_uuid=True),
        ForeignKey("accounts.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    opportunity_id: Mapped[UUID] = mapped_column(
        PG_UUID(as_uuid=True),
        ForeignKey("opportunities.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    user_id: Mapped[Optional[UUID]] = mapped_column(
        PG_UUID(as_uuid=True),
        ForeignKey("users.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )

    activity_type: Mapped[str] = mapped_column(String(100), nullable=False, default="note")
    subject: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
    notes: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    activity_date: Mapped[Optional[dt.datetime]] = mapped_column(
        DateTime(timezone=True), nullable=True
    )

    # Relationships
    opportunity: Mapped["Opportunity"] = relationship("Opportunity")