from sqlalchemy.orm import Session

from app.core.context import UserContext
from app.models.audit import AuditLog
from app.repositories.audit_repository import AuditRepository


class AuditService:
    """审计服务：统一记录关键接口调用和资源访问。"""

    def __init__(self, db: Session) -> None:
        self.db = db
        self.repo = AuditRepository(db)

    def log(
        self,
        ctx: UserContext,
        action: str,
        resource_type: str,
        resource_id: str | None = None,
        session_id: int | None = None,
        metadata: dict | None = None,
    ) -> None:
        """审计写入：保存用户、动作、资源和请求元数据。"""
        self.repo.create(
            AuditLog(
                user_id=ctx.user_id,
                tenant_id=ctx.tenant_id,
                session_id=session_id,
                action=action,
                resource_type=resource_type,
                resource_id=resource_id,
                request_id=ctx.request_id,
                ip_address=ctx.ip_address,
                user_agent=ctx.user_agent,
                metadata_=metadata,
            )
        )