from django.shortcuts import get_object_or_404

from rest_framework import serializers

from tickets.models import Ticket


class BaseTicketSerializer(serializers.ModelSerializer):
    def validate(self, data):
        user = self.context['request'].user

        if not (user.is_superuser or data["ticket_list"].group in user.groups.all()):
            raise serializers.ValidationError("You don't have access to this list.")
        
        return data


class TicketSerializer(BaseTicketSerializer):
    status = serializers.IntegerField(read_only=True)
    note = serializers.CharField(write_only=True, required=False)    

    class Meta():
        model = Ticket
        exclude = ["updated_at"]


class TicketDetailSerializer(BaseTicketSerializer):
    available_statuses = serializers.SerializerMethodField()

    def get_available_statuses(self, obj):
        return obj.get_available_statuses()

    class Meta():
        model = Ticket
        fields = "__all__"