from decimal import Decimal

from rest_framework.fields import DecimalField, JSONField, SerializerMethodField
from rest_framework.serializers import ModelSerializer, Serializer

from engine.payments.models import Transaction


class DepositSerializer(Serializer):
    amount = DecimalField(
        max_digits=12,
        decimal_places=2,
        required=True,
        min_value=Decimal("0.01"),
        max_value=Decimal("999999.99"),
    )


class TransactionSerializer(ModelSerializer):
    class Meta:
        model = Transaction
        fields = "__all__"


class TransactionProcessSerializer(ModelSerializer):
    process = JSONField(required=True)
    order_hr_id = SerializerMethodField(read_only=True, required=False)
    order_uuid = SerializerMethodField(read_only=True, required=False)

    def get_order_hr_id(self, obj: Transaction) -> str | None:
        return obj.order.human_readable_id if obj.order else None

    def get_order_uuid(self, obj: Transaction) -> str | None:
        return str(obj.order.uuid) if obj.order else None

    class Meta:
        model = Transaction
        fields = ("process", "order_hr_id", "order_uuid")
        read_only_fields = ("process", "order_hr_id", "order_uuid")


class LimitsSerializer(Serializer):
    min_amount = DecimalField(max_digits=12, decimal_places=2, read_only=True)
    max_amount = DecimalField(max_digits=12, decimal_places=2, read_only=True)