from .models import *
from rest_framework import serializers
from django.utils import timezone
from datetime import  timedelta

class ProductChatSerializer(serializers.ModelSerializer):
    price = serializers.SerializerMethodField()
    is_new = serializers.SerializerMethodField()
    class Meta:
        model = ProductModel
        fields = ['name', 'description', 'price', 'in_stock', 'discount', ]
    def get_price(self, obj):
        dollor_price = self.context.get('dollor_price')
        dollar_to_dirham = 0.27
        if dollor_price is None:
            raise ValidationError({"dollor_price": "The 'dollor_price' must be provided in the context for dollar pricing."})
        if obj.currency == 'toman':
            toman_price =  obj.price
        elif obj.currency == 'dollor':
            toman_price =  obj.price * dollor_price
        elif obj.currency == 'derham':
            toman_price =  obj.price * dollor_price * dollar_to_dirham
        return "{:,.0f} تومان".format(toman_price)
    def get_is_new(self, obj):
        return timezone.now() < obj.created_at + timedelta(days=7)

class ProductSerializer(ProductChatSerializer):
    class Meta:
        model = ProductModel
        fields = "__all__"

class CommentSerializer(serializers.ModelSerializer):
    class Meta:
        model = CommentModel
        fields = "__all__"
        read_only_fields = ('show', 'product', 'user')

class SubCategorySerializer(serializers.ModelSerializer):
    product_count = serializers.SerializerMethodField()
    class Meta:
        model = SubCategoryModel
        fields = ['id', 'name', 'slug','icon', 'meta_title', 'meta_description', 'product_count', 'show']
    def get_product_count(self, obj):
        return obj.products.count()


class MainCategorySerializer(serializers.ModelSerializer):
    subcategorys = SubCategorySerializer(many=True)
    class Meta:
        model = MainCategoryModel
        fields = ['id', 'name', 'slug', 'icon', 'meta_title', 'meta_description', 'subcategorys']