from rest_framework.decorators import action
from apps.utils.viewsets import CustomModelViewSet, CustomGenericViewSet
from apps.utils.mixins import CustomListModelMixin, RetrieveModelMixin

from apps.wpmw.models import Wpr, WprDefect
from apps.wpmw.serializers import WprSerializer, WprNewSerializer, WprDetailSerializer
from rest_framework.response import Response
from apps.mtm.models import Material


class WprViewSet(CustomListModelMixin, RetrieveModelMixin, CustomGenericViewSet):
    """动态产品

    动态产品
    """
    perms_map = {"get": "*"}
    select_related_fields = ["wm", "mb", "material"]
    prefetch_related_fields = ["defects"]
    queryset = Wpr.objects.all()
    serializer_class = WprSerializer
    retrieve_serializer_class = WprDetailSerializer
    filterset_fields = {
        "mb": ["exact", "isnull"],
        "wm": ["exact", "isnull"],
        "material__process": ["exact"],
        "state": ["exact"],
        "defects": ["exact"],
        "number": ["exact"]
    }
    ordering = ["number", "create_time"]
    ordering_fields = ["number", "create_time", "update_time"]
    search_fields = ["number", "material__name", "material__model", "material__specification"]

    def filter_queryset(self, queryset):
        qs = super().filter_queryset(queryset)
        if "mb__isnull" in self.request.query_params or "wm__isnull" in self.request.query_params:
            pass
        else:
            qs.exclude(mb=None, wm=None)
        return qs

    @action(methods=['post'], detail=False, perms_map={'post': '*'}, serializer_class=WprNewSerializer)
    def new_number(self, request, *args, **kwargs):
        """获取新的编号"""
        data = request.data
        year = data.get("year")
        month = data.get("month")
        material_start = data.get("material_start")
        wps_qs = Wpr.objects.filter(material_start=material_start, create_time__year=year, create_time__month=month).order_by("create_time")
        wpr_last = wps_qs.order_by("number").last()
        count = wps_qs.count()
        last_number = wpr_last.number if count > 0 else None
        last_number_count = int(last_number.split("-")[-1].lstrip('0'))
        mat = Material.objects.get(id=material_start)
        return Response({"count": count, "last_number": last_number, "material_model":mat.model, "last_number_count": last_number_count})