# -*- coding: utf-8 -*-
#

from rest_framework import viewsets
from rest_framework.decorators import action
from rest_framework.exceptions import MethodNotAllowed

from common.mixins.api import CommonApiMixin
from common.permissions import IsValidUser, IsOrgAdmin
from common.const.http import POST, PUT
from tickets import serializers
from tickets.permissions.ticket import IsAssignee, NotClosed
from tickets.models import Ticket
from tickets.api.ticket.mixin import TicketMetaSerializerViewMixin


__all__ = ['TicketViewSet']


class TicketViewSet(TicketMetaSerializerViewMixin, CommonApiMixin, viewsets.ModelViewSet):
    permission_classes = (IsValidUser,)
    serializer_class = serializers.TicketSerializer
    serializer_classes = {
        'default': serializers.TicketDisplaySerializer,
        'display': serializers.TicketDisplaySerializer,
        'apply': serializers.TicketApplySerializer,
        'approve': serializers.TicketApproveSerializer,
        'reject': serializers.TicketRejectSerializer,
        'close': serializers.TicketCloseSerializer,
    }
    filter_fields = [
        'id', 'title', 'type', 'action', 'status', 'applicant', 'applicant_display', 'processor',
        'processor_display', 'assignees__id'
    ]
    search_fields = [
        'title', 'action', 'type', 'status', 'applicant_display', 'processor_display'
    ]

    def create(self, request, *args, **kwargs):
        raise MethodNotAllowed(self.action)

    def update(self, request, *args, **kwargs):
        raise MethodNotAllowed(self.action)

    def destroy(self, request, *args, **kwargs):
        raise MethodNotAllowed(self.action)

    def get_queryset(self):
        queryset = Ticket.get_user_related_tickets(self.request.user)
        return queryset

    @action(detail=False, methods=[POST])
    def apply(self, request, *args, **kwargs):
        return super().create(request, *args, **kwargs)

    @action(detail=True, methods=[PUT], permission_classes=[IsOrgAdmin, IsAssignee, NotClosed])
    def approve(self, request, *args, **kwargs):
        return super().update(request, *args, **kwargs)

    @action(detail=True, methods=[PUT], permission_classes=[IsOrgAdmin, IsAssignee, NotClosed])
    def reject(self, request, *args, **kwargs):
        return super().update(request, *args, **kwargs)

    @action(detail=True, methods=[PUT], permission_classes=[IsOrgAdmin, IsAssignee, NotClosed])
    def close(self, request, *args, **kwargs):
        return super().update(request, *args, **kwargs)