import json
from typing import Annotated

from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session

from app.auth import get_current_admin
from app.database import get_db
from app.models.audit_log import AuditLog
from app.models.user import User
from app.schemas import AuditLogResponse

router = APIRouter(prefix="/api/logs", tags=["logs"])


def _log_to_response(log: AuditLog) -> AuditLogResponse:
    details = None
    if log.details:
        try:
            details = json.loads(log.details)
        except json.JSONDecodeError:
            details = {"raw": log.details}
    return AuditLogResponse(
        id=log.id,
        user_id=log.user_id,
        username=log.username,
        action=log.action,
        resource_type=log.resource_type,
        resource_id=log.resource_id,
        details=details,
        ip_address=log.ip_address,
        created_at=log.created_at,
    )


@router.get("", response_model=list[AuditLogResponse])
def list_logs(
    db: Annotated[Session, Depends(get_db)],
    _: Annotated[User, Depends(get_current_admin)],
    limit: int = Query(default=200, ge=1, le=1000),
    offset: int = Query(default=0, ge=0),
    action: str | None = None,
):
    query = db.query(AuditLog).order_by(AuditLog.created_at.desc())
    if action:
        query = query.filter(AuditLog.action.contains(action))
    logs = query.offset(offset).limit(limit).all()
    return [_log_to_response(log) for log in logs]