from datetime import datetime
from typing import Any

from ninja import Router, Schema

from apps.accounts.api import require_permission
from apps.audit.models import OperationAuditLog

router = Router(tags=["audit"])


class OperationAuditLogOut(Schema):
    id: int
    user_id: int | None
    username: str | None
    module: str
    action: str
    target_type: str
    target_id: str
    request_snapshot: dict[str, Any]
    result: str
    ip_address: str | None
    user_agent: str
    created_at: datetime


@router.get("/operation-logs", response=list[OperationAuditLogOut])
def list_operation_logs(
    request,
    module: str | None = None,
    action: str | None = None,
    target_type: str | None = None,
    target_id: str | None = None,
    result: str | None = None,
    user_id: int | None = None,
    created_from: datetime | None = None,
    created_to: datetime | None = None,
    limit: int = 100,
):
    require_permission(request, "system.audit.view")
    queryset = OperationAuditLog.objects.select_related("user")
    filters = {
        "module": module,
        "action": action,
        "target_type": target_type,
        "target_id": target_id,
        "result": result,
        "user_id": user_id,
    }
    for field, value in filters.items():
        if value not in (None, ""):
            queryset = queryset.filter(**{field: value})
    if created_from:
        queryset = queryset.filter(created_at__gte=created_from)
    if created_to:
        queryset = queryset.filter(created_at__lte=created_to)
    return [
        {
            "id": item.id,
            "user_id": item.user_id,
            "username": item.user.username if item.user_id else None,
            "module": item.module,
            "action": item.action,
            "target_type": item.target_type,
            "target_id": item.target_id,
            "request_snapshot": item.request_snapshot,
            "result": item.result,
            "ip_address": item.ip_address,
            "user_agent": item.user_agent,
            "created_at": item.created_at,
        }
        for item in queryset[: min(max(limit, 1), 500)]
    ]