from rest_framework import generics, permissions, status
from rest_framework.response import Response
from rest_framework.parsers import MultiPartParser, FormParser, JSONParser
from django.utils import timezone
from drf_yasg.utils import swagger_auto_schema
from drf_yasg import openapi
from chunyu_project.common_schemas import success_response, error_response, unauthorized_response, not_found_response
from .models import BugReport, BugReportComment
from .serializers import (
    BugReportListSerializer,
    BugReportDetailSerializer,
    BugReportCreateSerializer,
    BugReportCommentCreateSerializer,
    BugReportCommentSerializer,
)
from utils.response_codes import ResponseCode, create_standardized_response, create_standardized_error_response


class BugReportListCreateAPIView(generics.ListCreateAPIView):
    parser_classes = [JSONParser, MultiPartParser, FormParser]

    def get_serializer_class(self):
        if self.request.method == 'POST':
            return BugReportCreateSerializer
        return BugReportListSerializer

    def get_queryset(self):
        if getattr(self, 'swagger_fake_view', False):
            return BugReport.objects.none()
        return BugReport.objects.filter(user=self.request.user)

    @swagger_auto_schema(
        tags=['反馈'],
        operation_summary='获取Bug反馈列表',
        operation_description='获取当前用户提交的所有Bug反馈列表',
        responses={200: success_response, 401: unauthorized_response}
    )
    def list(self, request, *args, **kwargs):
        queryset = self.get_queryset()
        serializer = self.get_serializer(queryset, many=True)
        return create_standardized_response(
            code=ResponseCode.SUCCESS,
            data=serializer.data,
            message='获取Bug反馈列表成功'
        )

    @swagger_auto_schema(
        tags=['反馈'],
        operation_summary='提交Bug反馈',
        operation_description='提交新的Bug反馈，支持上传图片和附件',
        request_body=BugReportCreateSerializer,
        responses={201: success_response, 400: error_response, 401: unauthorized_response}
    )
    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        if serializer.is_valid():
            bug_report = serializer.save(user=request.user)
            detail_serializer = BugReportDetailSerializer(bug_report)
            return create_standardized_response(
                code=ResponseCode.SUCCESS,
                data=detail_serializer.data,
                message='Bug反馈提交成功',
                status_code=status.HTTP_201_CREATED
            )
        return create_standardized_error_response(
            code=ResponseCode.VALIDATION_ERROR,
            data=serializer.errors,
            message='提交失败',
            status_code=status.HTTP_400_BAD_REQUEST
        )


class BugReportDetailAPIView(generics.RetrieveAPIView):
    serializer_class = BugReportDetailSerializer
    parser_classes = [JSONParser, MultiPartParser]

    def get_queryset(self):
        if getattr(self, 'swagger_fake_view', False):
            return BugReport.objects.none()
        return BugReport.objects.filter(user=self.request.user)

    @swagger_auto_schema(
        tags=['反馈'],
        operation_summary='获取Bug反馈详情',
        operation_description='获取指定Bug反馈的详细信息，包括评论和附件',
        manual_parameters=[
            openapi.Parameter('pk', openapi.IN_PATH, description='Bug反馈ID', type=openapi.TYPE_INTEGER, required=True),
        ],
        responses={200: success_response, 401: unauthorized_response, 404: not_found_response}
    )
    def retrieve(self, request, *args, **kwargs):
        try:
            instance = self.get_object()
            serializer = self.get_serializer(instance)
            return create_standardized_response(
                code=ResponseCode.SUCCESS,
                data=serializer.data,
                message='获取Bug反馈详情成功'
            )
        except BugReport.DoesNotExist:
            return create_standardized_error_response(
                code=ResponseCode.NOT_FOUND,
                message='Bug反馈不存在',
                status_code=status.HTTP_404_NOT_FOUND
            )


class BugReportCommentCreateAPIView(generics.CreateAPIView):
    serializer_class = BugReportCommentCreateSerializer
    parser_classes = [JSONParser, MultiPartParser]

    @swagger_auto_schema(
        tags=['反馈'],
        operation_summary='回复Bug反馈',
        operation_description='为指定Bug反馈添加评论回复，支持上传图片和附件',
        manual_parameters=[
            openapi.Parameter('bug_report_id', openapi.IN_PATH, description='Bug反馈ID', type=openapi.TYPE_INTEGER, required=True),
        ],
        request_body=BugReportCommentCreateSerializer,
        responses={201: success_response, 400: error_response, 401: unauthorized_response, 404: not_found_response}
    )
    def create(self, request, *args, **kwargs):
        bug_report_id = kwargs.get('bug_report_id')
        try:
            bug_report = BugReport.objects.get(id=bug_report_id, user=request.user)
        except BugReport.DoesNotExist:
            return create_standardized_error_response(
                code=ResponseCode.NOT_FOUND,
                message='Bug反馈不存在',
                status_code=status.HTTP_404_NOT_FOUND
            )

        serializer = self.get_serializer(data=request.data)
        if serializer.is_valid():
            comment = serializer.save(
                user=request.user,
                bug_report=bug_report,
                is_admin=False
            )
            comment_serializer = BugReportCommentSerializer(comment)
            return create_standardized_response(
                code=ResponseCode.SUCCESS,
                data=comment_serializer.data,
                message='回复成功',
                status_code=status.HTTP_201_CREATED
            )
        return create_standardized_error_response(
            code=ResponseCode.VALIDATION_ERROR,
            data=serializer.errors,
            message='回复失败',
            status_code=status.HTTP_400_BAD_REQUEST
        )