from rest_framework import serializers

from apps.orders.models import Order, OrderStage, OrderStageLog


class OrderStageSerializer(serializers.ModelSerializer):
    class Meta:
        model = OrderStage
        fields = [
            "id",
            "label",
            "template",
            "sort_order",
            "requires_extra_input",
            "extra_input_label",
            "updated_at",
        ]
        read_only_fields = ["updated_at"]

    def validate_template(self, template):
        if template is None:
            return template
        request = self.context["request"]
        if template.user_id != request.user.id:
            raise serializers.ValidationError("این قالب متعلق به شما نیست.")
        return template


class OrderStageLogSerializer(serializers.ModelSerializer):
    class Meta:
        model = OrderStageLog
        fields = ["id", "stage", "stage_label", "message_body", "extra_input_value", "created_at"]
        read_only_fields = fields


class OrderSerializer(serializers.ModelSerializer):
    current_stage_label = serializers.CharField(source="current_stage.label", read_only=True, default="")

    class Meta:
        model = Order
        fields = [
            "id",
            "customer_name",
            "customer_phone",
            "tracking_code",
            "current_stage",
            "current_stage_label",
            "is_completed",
            "created_at",
            "updated_at",
        ]
        read_only_fields = ["current_stage", "is_completed", "created_at", "updated_at"]