from rest_framework import serializers
from core.apps.api.models import AdModel


class BaseSearchAdsSerializer(serializers.ModelSerializer):
    category = serializers.SerializerMethodField()

    class Meta:
        model = AdModel
        fields = [
            "id",
            "name",
            "image",
            "category"
        ]

    def get_category(self, obj):
        request = self.context.get("request")

        lang = request.headers.get("Accept-Language", "uz")
        lang = lang.split(",")[0].split("-")[0]

        if lang not in ["uz", "ru", "en"]:
            lang = "uz"

        category = obj.category
        if not category:
            return None

        chain = []
        current = category
        while current:
            chain.append(current)
            current = current.parent

        chain = list(reversed(chain))

        result = None
        for cat in reversed(chain):
            result = {
                "id": cat.id,
                "name": getattr(cat, f"name_{lang}"),
                "children": result
            }

        return result


class ListSearchAdsSerializer(BaseSearchAdsSerializer):
    class Meta(BaseSearchAdsSerializer.Meta): ...


class RetrieveSearchAdsSerializer(BaseSearchAdsSerializer):
    class Meta(BaseSearchAdsSerializer.Meta): ...


class CreateSearchAdsSerializer(BaseSearchAdsSerializer):
    class Meta(BaseSearchAdsSerializer.Meta): ...