from rest_framework import serializers
from hub.services.models import ServiceOffering, Plan


class ServiceUserSerializer(serializers.Serializer):
    email = serializers.EmailField()
    full_name = serializers.CharField()
    role = serializers.CharField()


class ProvisioningContextSerializer(serializers.Serializer):
    platform = serializers.CharField()
    organization_guid = serializers.CharField()
    space_guid = serializers.CharField()
    organization_name = serializers.CharField()
    organization_display_name = serializers.CharField()


class ProvisioningParametersSerializer(serializers.Serializer):
    users = ServiceUserSerializer(many=True)


class ServiceInstanceProvisioningSerializer(serializers.Serializer):
    service_id = serializers.CharField()  # This will now represent the offering_id
    plan_id = serializers.CharField()
    organization_guid = serializers.CharField()
    space_guid = serializers.CharField()
    parameters = ProvisioningParametersSerializer()
    context = ProvisioningContextSerializer()

    def validate_service_id(self, value):
        """Validate the service_id which now represents the offering_id"""
        try:
            return ServiceOffering.objects.get(pk=value)
        except ServiceOffering.DoesNotExist:
            raise serializers.ValidationError("Invalid offering_id")

    def validate_plan_id(self, value):
        try:
            # Get the plan and ensure it belongs to the selected offering
            plan = Plan.objects.get(pk=value)
            offering = self.initial_data.get("service_id")
            if str(plan.offering.id) != offering:
                raise serializers.ValidationError(
                    "Plan does not belong to the selected offering"
                )
            return plan
        except Plan.DoesNotExist:
            raise serializers.ValidationError("Invalid plan_id")