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

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

from common.const.http import POST, PUT
from common.mixins.api import CommonApiMixin
from common.permissions import IsValidUser, IsOrgAdmin

from tickets import serializers
from tickets.models import Ticket
from tickets.permissions.ticket import IsAssignee, NotClosed


__all__ = ['TicketViewSet']


class TicketViewSet(CommonApiMixin, viewsets.ModelViewSet):
    permission_classes = (IsValidUser,)
    serializer_class = serializers.TicketSerializer
    serializer_classes = {
        'default': serializers.TicketDisplaySerializer,
        'display': serializers.TicketDisplaySerializer,
        'open': serializers.TicketApplySerializer,
        'approve': serializers.TicketApproveSerializer,
        'reject': serializers.TicketRejectSerializer,
        'close': serializers.TicketCloseSerializer,
    }
    filterset_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 open(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)