from rest_framework import serializers
from django.utils.translation import get_language
from .category import get_localized_text

from ..serializers import HadisListSerializer,HadisBasicSerializer,LocalizedField
from ..models import BookReference , BookAuthor , BookReferenceImage, HadisReference , BookAttribute


class BookAuthorSerializer(serializers.ModelSerializer):
    name = LocalizedField()
    class Meta:
        model = BookAuthor
        fields = ['id','name']

class BookReferenceImageSerializer(serializers.ModelSerializer):
    description = LocalizedField()
    class Meta:
        model = BookReferenceImage
        fields = ['id','image','description','order']

class BookReferenceSerializer(serializers.ModelSerializer):
    image = BookReferenceImageSerializer(
        many= True ,
        read_only = True ,
        source = 'bookreference_set'
        )
    title = LocalizedField()
    description = LocalizedField()
    author = serializers.SerializerMethodField()
    class Meta:
        model = BookReference
        fields = ['id','title','slug','rate','author','description','image','volume']
    def get_author(self, obj):
        request = self.context.get("request")
        # Prefer request.LANGUAGE_CODE if you use LocaleMiddleware
        language_code = getattr(request, "LANGUAGE_CODE", None) if request else None
        print(language_code,1)
        if not language_code:
            language_code =get_language() or "en"  # fallback [web:164][web:165]

        print(language_code,2)

        authors = obj.authors.all()
        result = []

        for author in authors:
            # author.name is your list of dicts
            name_items = author.name or []
            # find item with matching language_code
            text = None
            for item in name_items:
                if item.get("language_code") == language_code:
                    print(f'we got language-code{language_code}')
                    text = item.get("text")
                    break

            # fallback: if not found, use first item or None
            print(text,'this is text')
            if text is None and name_items:
                print('no we didnt')

                text = name_items[0].get("text")

            result.append(
                {
                    "id": author.id,
                    "name": text,
                }
            )

        return result

class BookAttributeSerializer(serializers.ModelSerializer):
    title = LocalizedField()
    value = LocalizedField()
    class Meta:
        model = BookAttribute
        fields = ['id', 'title', 'value','book_reference']

class BookDetailSerializer(serializers.ModelSerializer):

    attribute = BookAttributeSerializer(
        many=True,
        read_only = True,
        source = 'attributes'
    )
    author= BookAuthorSerializer(
        many=True,
        read_only=True,
        source='authors'
    )
    image = BookReferenceImageSerializer(
        many=True,
        read_only=True,
        source='images'
    )

    # hadis = HadisListSerializer(
    #     many=True,
    #     read_only=True,
    #     source='hadis_references__hadis'
    # )

    hadis = serializers.SerializerMethodField()
    title = LocalizedField()
    language = LocalizedField()
    publisher = LocalizedField()
    description = LocalizedField()

    class Meta:
        model = BookReference
        fields = ['id','title','rate','isbn','language','number_page','publisher','description','volume','slug','attribute','author','image','hadis']

    def get_hadis(self,obj):
        references = obj.hadis_references.all()
        hadis_list = [ref.hadis for ref in references if ref.hadis]
        return HadisBasicSerializer(hadis_list,many=True).data



class BookReferenceSyncSerializer(serializers.ModelSerializer):
    """Serializer for syncing all book reference data for offline mode"""

    attribute = BookAttributeSerializer(
        many=True,
        read_only=True,
        source='attributes'
    )
    author = BookAuthorSerializer(
        many=True,
        read_only=True,
        source='authors'
    )
    image = BookReferenceImageSerializer(
        many=True,
        read_only=True,
        source='images'
    )

    # Basic information
    detail = serializers.SerializerMethodField()
    hadises = serializers.SerializerMethodField()
    title = LocalizedField()

    class Meta:
        model = BookReference
        fields = [
            'id', 'title', 'rate', 'author', 'detail', 'image', 'attribute', 'hadises'
        ]

    def get_detail(self, obj):
        """Get basic book information"""
        request = self.context.get('request')

        return {
            'description': get_localized_text(obj.description, request),
            'volume': obj.volume,
            'language': get_localized_text(obj.language, request),
            'isbn': obj.isbn,
            'number_page': obj.number_page,
            'year_of_publication': obj.year_of_publication,
            'volume_info': obj.volume,
            'rating': obj.rate
        }

    def get_hadises(self, obj):
        """Get all hadises related to this book reference (already prefetched)"""
        request = self.context.get('request')

        hadis_list = []
        # obj.hadis_references.all() is already prefetched!
        for hadis_ref in obj.hadis_references.all():
            hadis = hadis_ref.hadis  # Already prefetched, no query!
            
            # Handle get_translation - if it's a method, call it; if field, access it
            translation = hadis.get_translation if callable(hadis.get_translation) else hadis.translation
            if callable(translation):
                translation = translation()
            
            hadis_list.append({
                'id': hadis.id,
                'title': get_localized_text(hadis.title, request),
                'title_narrator': get_localized_text(hadis.title_narrator, request),
                'text': get_localized_text(hadis.text, request),
                'translation': get_localized_text(translation, request),
                'share_link': hadis.share_link
            })

        return hadis_list