from rest_framework import serializers
from .models import University, Agreement, Section

class SectionsSerializer(serializers.ModelSerializer):

    classes = serializers.SlugRelatedField(
        many = True,
        read_only = True,
        slug_field = "MJC_Class_Name"
    )

    class Meta:
        model = Section
        fields = ["area_name", "number_of_required_courses", "classes", "agreement"]


class AgreementsSerializer(serializers.ModelSerializer):
    sections = SectionsSerializer(many=True)

    class Meta:
        model = Agreement
        fields = ["major", "university", "sections"]

class UniversitySerializer(serializers.ModelSerializer):
    agreements = AgreementsSerializer(many=True)
    
    class Meta:
        model = University
        fields = ["id", "name", "agreements"]