import uuid
from datetime import datetime
from sqlalchemy import String, DateTime, Text, ForeignKey, func
from sqlalchemy.orm import Mapped, mapped_column
from app.database import Base


class AuditLog(Base):
    __tablename__ = "audit_logs"
    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    user_id: Mapped[str | None] = mapped_column(ForeignKey("users.id"), nullable=True)
    action: Mapped[str] = mapped_column(String(50))
    module: Mapped[str] = mapped_column(String(50))
    record_id: Mapped[str | None] = mapped_column(String(36), nullable=True)
    old_value: Mapped[str | None] = mapped_column(Text, nullable=True)
    new_value: Mapped[str | None] = mapped_column(Text, nullable=True)
    ip_address: Mapped[str | None] = mapped_column(String(50), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())