"""
AuditLog model - tracks all user actions.
"""

from sqlalchemy import BigInteger, ForeignKey, Integer, String
from sqlalchemy.dialects.postgresql import INET, JSONB
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.models.base import Base


class AuditLog(Base):
    """
    Audit log model for tracking user actions.

    Logs every action: login, view, create, update, delete, export, etc.
    """

    __tablename__ = "audit_logs"

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True)

    # Who
    user_id: Mapped[int | None] = mapped_column(
        ForeignKey("users.id", ondelete="SET NULL")
    )
    user_email: Mapped[str | None] = mapped_column(
        String(255)
    )  # Cached for deleted users

    organization_id: Mapped[int | None] = mapped_column(
        ForeignKey("organizations.id", ondelete="SET NULL")
    )

    # What
    action: Mapped[str] = mapped_column(
        String(50), nullable=False
    )  # login, logout, failed_login, view, create, update, delete, export, etc.

    resource_type: Mapped[str | None] = mapped_column(
        String(50)
    )  # device, user, location, beacon, etc.

    resource_id: Mapped[int | None] = mapped_column(Integer)

    # Details
    description: Mapped[str | None] = mapped_column(String)
    changes: Mapped[dict | None] = mapped_column(JSONB)  # Before/after values

    # When & Where
    ip_address: Mapped[str | None] = mapped_column(INET)
    user_agent: Mapped[str | None] = mapped_column(String)

    # Relationships
    user: Mapped["User | None"] = relationship("User", back_populates="audit_logs")
    organization: Mapped["Organization | None"] = relationship("Organization")

    def __repr__(self) -> str:
        return f"<AuditLog {self.id}: {self.action} by {self.user_email}>"