"""Compliance models — AI/privacy incident register for EU compliance."""

from __future__ import annotations

import uuid
from datetime import datetime
from typing import Any

from sqlalchemy import DateTime, ForeignKey, Index, String, Text
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.dialects.postgresql import UUID as PGUUID
from sqlalchemy.orm import Mapped, mapped_column

from app.core.db import Base, TenantMixin


class ComplianceIncident(Base, TenantMixin):
    """An AI/privacy/security incident tracked for compliance purposes.

    Used by the compliance routes under /api/v1/compliance/incidents.
    """

    __tablename__ = "compliance_incidents"
    __table_args__ = (
        Index("ix_compliance_incidents_tenant_status", "tenant_id", "status"),
        Index("ix_compliance_incidents_tenant_type", "tenant_id", "incident_type"),
    )

    id: Mapped[uuid.UUID] = mapped_column(
        PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    incident_type: Mapped[str] = mapped_column(
        String(30), nullable=False, default="ai"
    )
    title: Mapped[str] = mapped_column(String(300), nullable=False)
    description: Mapped[str] = mapped_column(Text, nullable=False, default="")
    affected_use_cases: Mapped[list[Any]] = mapped_column(
        JSONB, nullable=False, default=list
    )
    affected_versions: Mapped[list[Any]] = mapped_column(
        JSONB, nullable=False, default=list
    )
    provider: Mapped[str] = mapped_column(String(100), nullable=False, default="")
    measures_taken: Mapped[str] = mapped_column(Text, nullable=False, default="")
    evidence_refs: Mapped[list[Any]] = mapped_column(
        JSONB, nullable=False, default=list
    )
    status: Mapped[str] = mapped_column(
        String(20), nullable=False, default="open"
    )
    created_by: Mapped[uuid.UUID | None] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True
    )
    resolved_by: Mapped[uuid.UUID | None] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True
    )
    resolved_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )