# coding:utf-8

from rest_framework.response import Response
from rest_framework.views import APIView
from drf_spectacular.utils import extend_schema, OpenApiResponse, OpenApiParameter, OpenApiExample, OpenApiTypes
from .serializers import ProcessListSerializer, ProcessDetailPutSerializer, ProcessDetailDeleteSerializer
from monitor.pagination import CustomPagination
from utils.supervisord_utils import SupervisordUtils
from monitor.permissions import LoginPermission


class ProcessListView(APIView):
    permission_classes = [LoginPermission]

    @extend_schema(
        parameters=[
            OpenApiParameter(
                name='page',
                type=OpenApiTypes.STR,
                location=OpenApiParameter.QUERY,
                description='页码，第几页',
            ),
            OpenApiParameter(
                name='size',
                type=OpenApiTypes.STR,
                location=OpenApiParameter.QUERY,
                description='每页条目数',
            ),
            OpenApiParameter(
                name='name',
                type=OpenApiTypes.STR,
                location=OpenApiParameter.QUERY,
                description='进程名称',
            ),
        ],
        description="获取监控列表接口",
        request=None,
        responses=ProcessListSerializer
    )
    def get(self, request):
        name = request.query_params.get('name', '').strip()
        data_list = SupervisordUtils().list(name)
        page = CustomPagination()
        queryset = page.paginate_queryset(data_list, request=request, view=self)
        serobj = ProcessListSerializer(queryset, many=True)
        return page.get_paginated_response(serobj.data)


class ProcessDetailView(APIView):
    permission_classes = [LoginPermission]

    @extend_schema(
        description="停止/重启进程接口",
        request=ProcessDetailPutSerializer,

        responses={
            200: OpenApiResponse(description="无返回值")
        }
    )
    def post(self, request, *args, **kwargs):
        serobj = ProcessDetailPutSerializer(data=request.data)
        if not serobj.is_valid():
            return Response(serobj.errors, status=400)

        action = request.data['action']
        name = request.data['name']
        sup = SupervisordUtils()
        if action == 'restart':
            sup.restart(name)
        else:
            sup.stop(name)
        return Response(status=200)


class ProcessDeleteView(APIView):
    permission_classes = [LoginPermission]

    @extend_schema(
        description="删除进程进程接口",
        request=ProcessDetailDeleteSerializer,
        responses={
            200: OpenApiResponse(description="无返回值")
        }
    )
    def post(self, request, *args, **kwargs):
        serobj = ProcessDetailDeleteSerializer(data=request.data)
        if not serobj.is_valid():
            return Response(serobj.errors, status=400)

        name = request.data['name']
        sup = SupervisordUtils()
        sup.remove(name)
        return Response(status=200)