from django.utils import timezone
from rest_framework import serializers

from files.api.v1.serializers import FileUploadSerializer, NoIDFileUploadSerializer
from shop.models import (
    Product,
    ProductPrice,
    Customer,
    Tax,
    OrderLine,
    Order,
    ProductBatch,
    Provider,
    Tag,
)


class TaxSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tax
        fields = (
            "id",
            "code",
            "value",
        )


class TagSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tag
        fields = (
            "id",
            "name",
        )


class ProductPriceSerializer(serializers.ModelSerializer):
    tax = TaxSerializer()

    class Meta:
        model = ProductPrice
        fields = (
            "price",
            "date",
            "tax",
            "price_with_tax",
        )


class CreateProductPriceSerializer(serializers.ModelSerializer):
    class Meta:
        model = ProductPrice
        fields = (
            "id",
            "price",
            "tax",
        )


class ProductSerializer(serializers.ModelSerializer):
    images = FileUploadSerializer(many=True, read_only=True)
    price = ProductPriceSerializer()

    class Meta:
        model = Product
        fields = (
            "id",
            "name",
            "description",
            "stock",
            "is_digital_asset",
            "images",
            "price",
            "tags",
        )


class ListProductSerializer(serializers.ModelSerializer):
    price = ProductPriceSerializer()
    tags = TagSerializer(many=True)
    images = NoIDFileUploadSerializer(many=True, read_only=True)

    class Meta:
        model = Product
        fields = (
            "id",
            "name",
            "description",
            "stock",
            "is_digital_asset",
            "price",
            "tags",
            "images",
        )


class CreateProductSerializer(serializers.ModelSerializer):
    price = serializers.DecimalField(
        max_digits=13, decimal_places=4, required=False, write_only=True
    )
    tax = serializers.PrimaryKeyRelatedField(
        queryset=Tax.objects.all(), write_only=True
    )

    def create(self, validated_data):
        instance = Product.objects.create(
            name=validated_data.get("name"),
            description=validated_data.get("description"),
            stock=validated_data.get("stock"),
            is_digital_asset=validated_data.get("is_digital_asset"),
            url=validated_data.get("url"),
        )

        tags = validated_data.get('tags')
        for tag in tags:
            instance.tags.add(tag)

        ProductPrice.objects.create(
            product=instance,
            date=timezone.now(),
            price=validated_data.get("price"),
            tax=validated_data.get("tax"),
        )
        return instance

    class Meta:
        model = Product
        fields = (
            "id",
            "name",
            "description",
            "stock",
            "is_digital_asset",
            "url",
            "price",
            "tax",
            "tags",
            "images",
        )


class UpdateProductSerializer(serializers.ModelSerializer):
    class Meta:
        model = Product
        fields = (
            "id",
            "name",
            "description",
            "stock",
            "is_digital_asset",
            "url",
            "tags",
            "images",
        )


class ProductBatchSerializer(serializers.ModelSerializer):
    class Meta:
        model = ProductBatch
        fields = (
            "id",
            "code",
            "product",
            "quantity",
            "creation_date",
            "expiration_date",
        )


class CustomerSerializer(serializers.ModelSerializer):
    class Meta:
        model = Customer
        fields = (
            "id",
            "vat_id",
            "first_name",
            "last_name",
            "email",
            "address",
            "city",
            "state",
            "country",
            "zip",
        )


class ProviderSerializer(serializers.ModelSerializer):
    class Meta:
        model = Provider
        fields = (
            "id",
            "vat_id",
            "name",
            "email",
            "phone",
            "address",
            "city",
            "state",
            "country",
            "zip",
        )


class OrderSerializer(serializers.ModelSerializer):
    class Meta:
        model = Order
        fields = (
            "uuid",
            "creation_date",
            "last_modification_date",
            "base_total",
            "total",
            "customer",
            "billing_address",
            "billing_city",
            "billing_state",
            "billing_country",
            "billing_zip",
            "shipping_address",
            "shipping_city",
            "shipping_state",
            "shipping_country",
            "shipping_zip",
            "contact_phone",
        )
        read_only_fields = (
            "uuid",
            "base_total",
            "total",
        )


class OrderLineSerializer(serializers.ModelSerializer):
    class Meta:
        model = OrderLine
        fields = (
            "id",
            "product",
            "quantity",
            "price",
            "base_total",
            "total",
            "taxes",
            "tax_value",
        )
        read_only_fields = (
            "price",
            "base_total",
            "total",
            "taxes",
            "tax_value",
        )