from .models import *
from rest_framework import serializers

class ProductChatSerializer(serializers.ModelSerializer):
    price = serializers.SerializerMethodField()
    class Meta:
        model = ProductModel
        fields = ['name', 'description', 'price', 'in_stock', 'discount', ]
    def get_price(self, obj):
        dollor_object, _ = DollorModel.objects.get_or_create(unique_filed='unique')
        dollor_price = dollor_object.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':
            return obj.price
        elif obj.currency == 'dollor':
            return obj.price * dollor_price
        elif obj.currency == 'derham':
            return obj.price * dollor_price * dollar_to_dirham

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

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


class CategorySerializer(serializers.ModelSerializer):
    children = serializers.SerializerMethodField()

    class Meta:
        model = CategoryModel
        fields = ['id', 'name', 'slug', 'icon', 'meta_title', 'meta_description', 'parent', 'children']

    def get_children(self, obj):
        children = obj.children.all()
        if children.exists():
            return CategorySerializer(children, many=True).data
        return []