from rest_framework import serializers
from Auth.models import Profile, ProfileRole
from Establishment.models import Establishment
from Subscriptions.models import Guardian, RegistrationForm
from School.models import Teacher

class ProfileSerializer(serializers.ModelSerializer):
    id = serializers.IntegerField(required=False)
    password = serializers.CharField(write_only=True)
    roles = serializers.SerializerMethodField()

    class Meta:
        model = Profile
        fields = ['id', 'password', 'email', 'code', 'datePeremption', 'username', 'roles']
        extra_kwargs = {'password': {'write_only': True}}

    def get_roles(self, obj):
        roles = ProfileRole.objects.filter(profile=obj)
        roles_data = []
        for role in roles:
            # Récupérer l'ID de l'associated_person en fonction du type de rôle
            if role.role_type == ProfileRole.RoleType.PROFIL_PARENT:
                guardian = Guardian.objects.filter(profile_role=role).first()
                id_associated_person = guardian.id if guardian else None
            else:
                teacher = Teacher.objects.filter(profile_role=role).first()
                id_associated_person = teacher.id if teacher else None

            roles_data.append({
                'id_associated_person': id_associated_person,
                'role_type': role.role_type,
                'establishment': role.establishment.id,
                'establishment_name': role.establishment.name,
                'is_active': role.is_active,
            })
        return roles_data

    def create(self, validated_data):
        user = Profile(
            username=validated_data['username'],
            email=validated_data['email'],
            code=validated_data.get('code', ''),
            datePeremption=validated_data.get('datePeremption', '')
        )
        user.set_password(validated_data['password'])
        user.full_clean()
        user.save()
        return user

    def update(self, instance, validated_data):
        password = validated_data.pop('password', None)
        instance = super().update(instance, validated_data)
        
        if password:
            instance.set_password(password)
        
        instance.full_clean()
        instance.save()
        return instance

    def to_representation(self, instance):
        ret = super().to_representation(instance)
        ret['password'] = '********'
        ret['roles'] = self.get_roles(instance)
        return ret

class ProfileRoleSerializer(serializers.ModelSerializer):
    profile = serializers.PrimaryKeyRelatedField(queryset=Profile.objects.all(), required=False)
    profile_data = ProfileSerializer(write_only=True, required=False)
    associated_profile_email = serializers.SerializerMethodField()
    associated_person = serializers.SerializerMethodField()

    class Meta:
        model = ProfileRole
        fields = ['id', 'role_type', 'establishment', 'is_active', 'profile', 'profile_data', 'associated_profile_email', 'associated_person']

    def create(self, validated_data):
        profile_data = validated_data.pop('profile_data', None)
        profile = validated_data.pop('profile', None)

        if profile_data:
            profile_serializer = ProfileSerializer(data=profile_data)
            profile_serializer.is_valid(raise_exception=True)
            profile = profile_serializer.save()
        elif profile:
            profile = Profile.objects.get(id=profile.id)

        profile_role = ProfileRole.objects.create(profile=profile, **validated_data)
        return profile_role

    def update(self, instance, validated_data):
        profile_data = validated_data.pop('profile_data', None)
        profile = validated_data.pop('profile', None)

        if profile_data:
            profile_serializer = ProfileSerializer(instance.profile, data=profile_data)
            profile_serializer.is_valid(raise_exception=True)
            profile = profile_serializer.save()
        elif profile:
            profile = Profile.objects.get(id=profile.id)

        instance.role_type = validated_data.get('role_type', instance.role_type)
        instance.establishment_id = validated_data.get('establishment', instance.establishment.id)
        instance.is_active = validated_data.get('is_active', instance.is_active)
        instance.save()
        return instance

    def get_associated_profile_email(self, obj):
        if obj.profile:
            return obj.profile.email
        return None
    
    def get_associated_person(self, obj):
        if obj.role_type == ProfileRole.RoleType.PROFIL_PARENT:
            guardian = Guardian.objects.filter(profile_role=obj).first()
            if guardian:
                students = guardian.student_set.all()
                students_list = []
                for student in students:
                    registration_form = RegistrationForm.objects.filter(student=student).first()
                    registration_status = registration_form.status if registration_form else None
                    students_list.append({
                        "id": f"{student.id}",
                        "student_name": f"{student.last_name} {student.first_name}",
                        "registration_status": registration_status
                    })
                return {
                    "id": guardian.id,
                    "guardian_name": f"{guardian.last_name} {guardian.first_name}",
                    "students": students_list
                }
        else:
            teacher = Teacher.objects.filter(profile_role=obj).first()
            if teacher:
                classes = teacher.schoolclass_set.all()
                classes_list = [{"id": classe.id, "name": classe.atmosphere_name} for classe in classes]
                specialities = teacher.specialities.all()
                specialities_list = [{"name": speciality.name, "color_code": speciality.color_code} for speciality in specialities]
                return {
                    "id": teacher.id,
                    "teacher_name": f"{teacher.last_name} {teacher.first_name}",
                    "classes": classes_list,
                    "specialities": specialities_list
                }
        return None