from rest_framework import serializers

from apps.payments.models import Order


class CheckoutResponseSerializer(serializers.Serializer):
    order_id = serializers.IntegerField()
    redirect_url = serializers.URLField()
    amount_toman = serializers.IntegerField()
    gateway = serializers.CharField()


class OrderSerializer(serializers.ModelSerializer):
    course_id = serializers.IntegerField(read_only=True)
    course_slug = serializers.CharField(source="course.slug", read_only=True)
    course_title = serializers.CharField(source="course.title", read_only=True)
    promo_code = serializers.CharField(source="promo_code.code", read_only=True, allow_null=True)
    referrer_code = serializers.CharField(source="referrer.referral_code", read_only=True, allow_null=True)

    class Meta:
        model = Order
        fields = [
            "id",
            "course_id",
            "course_slug",
            "course_title",
            "base_amount_toman",
            "discount_amount_toman",
            "amount_toman",
            "ilo_fee_toman",
            "instructor_share_toman",
            "commission_percent_snapshot",
            "gateway",
            "ref_id",
            "status",
            "created_at",
            "paid_at",
            "failed_at",
            "last_error",
            "promo_code",
            "referrer_code",
        ]
        read_only_fields = fields


class InstructorSaleSerializer(serializers.ModelSerializer):
    """Sale entry shown in the instructor's revenue / orders panel."""

    course_id = serializers.IntegerField(read_only=True)
    course_title = serializers.CharField(source="course.title", read_only=True)
    student_id = serializers.IntegerField(source="student.id", read_only=True)
    student_name = serializers.CharField(source="student.full_name", read_only=True)

    class Meta:
        model = Order
        fields = [
            "id",
            "course_id",
            "course_title",
            "student_id",
            "student_name",
            "amount_toman",
            "ilo_fee_toman",
            "instructor_share_toman",
            "commission_percent_snapshot",
            "status",
            "created_at",
            "paid_at",
        ]
        read_only_fields = fields