from django.shortcuts import render
from django.core.paginator import Paginator
from .models import manga_collection


def manga_catalog(request):
    # Получаем список всех уникальных тегов
    all_tags = manga_collection.distinct("tags")

    # Получаем выбранные теги из GET-параметров
    selected_tags = request.GET.getlist('tags')

    # Формируем запрос для фильтрации
    query = {}
    if selected_tags:
        query['tags'] = {'$all': selected_tags}

    # Получаем отфильтрованные записи
    filtered_manga = list(manga_collection.find(query))

    # Пагинация
    paginator = Paginator(filtered_manga, 20)
    page_number = request.GET.get('page')
    page_obj = paginator.get_page(page_number)

    total_manga_count = manga_collection.count_documents({})

    return render(request, 'manga_catalog.html', {
        'page_obj': page_obj,
        'manga_list': page_obj.object_list,
        'total_manga_count': total_manga_count,
        'all_tags': sorted(all_tags),
        'selected_tags': selected_tags
    })

def show_manga(request, manga_id):
    manga = manga_collection.find_one({"id": int(manga_id)})
    if not manga:
        return render(request, "not_found.html")
    return render(request, "manga_view.html", {"manga": manga})

def show_manga_page(request, manga_id, page_number):
    manga = manga_collection.find_one({"id": int(manga_id)})
    if not manga or page_number < 1 or page_number > manga['len_manga']:
        return render(request, "not_found.html")

    img_url = manga['imgs_manga'][page_number - 1]
    return render(request, "manga_page.html", {
        "manga": manga,
        "img_url": img_url,
        "page_number": page_number
    })