from rest_framework import serializers
from .models import OrderItemModel, OrderModel, DiscountCode
from product.serializers import ProductVariantSerialzier
from account.serializers import UserAddressSerializer
class DiscountCodeSerializer(serializers.ModelSerializer):
    class Meta:
        model = DiscountCode
        fields = ('code', 'percent')
        read_only_fields = ('percent',)


class OrderItemSerailzier(serializers.ModelSerializer):
    product = serializers.SerializerMethodField()
    class Meta:
        model = OrderItemModel
        fields = "__all__"
        read_only_fields = ('order', 'product')
    def get_product(self, obj):
        return ProductVariantSerialzier(instance=obj.product, context={'request': self.context.get('request')}).data

class CartSerializer(serializers.ModelSerializer):
    items = OrderItemSerailzier(many=True)
    product_discount = serializers.SerializerMethodField()
    cart_total = serializers.SerializerMethodField()
    tax = serializers.SerializerMethodField()
    final_price = serializers.SerializerMethodField()
    discount_code = serializers.SerializerMethodField()
    class Meta:
        model = OrderModel
        fields = [ 'discount_code', 'items', 'cart_total', 'product_discount', 'tax', 'final_price']


    def get_discount_code(self, obj):
        if obj.discount_code:
            return {
                'code': obj.discount_code.code,
                'persent': obj.discount_code.percent,
                'amount': '100,000 تومان'
            }
        else:
            return None

    def get_product_discount(self, obj):
        return [
            {
                'product_name': 'iphone 13',
                'dicount': '20%',
                'discount_amount': '100,000 تومان'
            },
            {
                'product_name': 'iphone 12',
                'dicount': '10%',
                'discount_amount': '50,000 تومان'
            },
        ]




    def get_tax(self, obj):
        return 1000

    def get_cart_total(self, obj):
        return 10000

    def get_final_price(self, obj):
        return 8000

    

class OrderSerializer(serializers.ModelSerializer):
    count =  serializers.SerializerMethodField()
    images =  serializers.SerializerMethodField()
    class Meta:
        model = OrderModel
        fields = ['address', 'created_at', 'is_paid', 'status', 'discount_code', "images", "count", "id"]

    def get_count(self, obj):
        return obj.items.all().count()

    def get_images(self, obj):
        image_list = [
            self.context.get('request').build_absolute_uri(image.image.url)
            if (image := item.product.images.all().first()) else None
            for item in obj.items.all()[:3]
        ]
        return filter(lambda x: x is not None, image_list)