#include "../../plugins/LocalManga.hpp"
#include "../../include/Notification.hpp"
#include "../../include/Config.hpp"
#include "../../include/Theme.hpp"
#include "../../include/StringUtils.hpp"
#include "../../include/Storage.hpp"

namespace QuickMedia {
    // Pages are sorted from 1.png to n.png
    static std::vector<LocalMangaPage> get_images_in_manga(const Path &directory) {
        std::vector<LocalMangaPage> page_list;
        for_files_in_dir(directory, [&page_list](const Path &filepath) -> bool {
            if(get_file_type(filepath) != FileType::REGULAR)
                return true;

            std::string filname_no_ext = filepath.filename_no_ext();
            int page_number = 0;
            if(!to_num(filname_no_ext.c_str(), filname_no_ext.size(), page_number) || filepath.ext()[0] == '\0')
                return true;

            LocalMangaPage local_manga_page;
            local_manga_page.path = filepath;
            local_manga_page.number = page_number;
            page_list.push_back(std::move(local_manga_page));
            return true;
        });

        std::sort(page_list.begin(), page_list.end(), [](const LocalMangaPage &manga_page1, const LocalMangaPage &manga_page2) {
            return manga_page1.number < manga_page2.number;
        });
        return page_list;
    }

    static std::vector<LocalMangaChapter> get_chapters_in_manga(const Path &directory) {
        std::vector<LocalMangaChapter> chapter_list;
        auto callback = [&chapter_list](const Path &filepath) -> bool {
            if(get_file_type(filepath) != FileType::DIRECTORY)
                return true;

            LocalMangaChapter local_manga_chapter;
            local_manga_chapter.name = filepath.filename();
            local_manga_chapter.pages = get_images_in_manga(filepath);
            if(local_manga_chapter.pages.empty() || !file_get_last_modified_time_seconds(filepath.data.c_str(), &local_manga_chapter.modified_time_seconds))
                return true;

            chapter_list.push_back(std::move(local_manga_chapter));
            return true;
        };

        if(get_config().local_manga_sort_chapters_by_name)
            for_files_in_dir_sort_name(directory, std::move(callback), FileSortDirection::DESC);
        else
            for_files_in_dir_sort_last_modified(directory, std::move(callback));

        return chapter_list;
    }

    static std::vector<LocalManga> get_manga_in_directory(const Path &directory) {
        std::vector<LocalManga> manga_list;
        auto callback = [&manga_list](const Path &filepath) -> bool {
            if(get_file_type(filepath) != FileType::DIRECTORY)
                return true;

            LocalManga local_manga;
            local_manga.name = filepath.filename();
            local_manga.chapters = get_chapters_in_manga(filepath);
            if(local_manga.chapters.empty() || !file_get_last_modified_time_seconds(filepath.data.c_str(), &local_manga.modified_time_seconds))
                return true;

            manga_list.push_back(std::move(local_manga));
            return true;
        };

        if(get_config().local_manga_sort_by_name)
            for_files_in_dir_sort_name(directory, std::move(callback), FileSortDirection::ASC);
        else
            for_files_in_dir_sort_last_modified(directory, std::move(callback));

        return manga_list;
    }

    static std::shared_ptr<BodyItem> local_manga_to_body_item(const LocalManga &local_manga, time_t time_now) {
        auto body_item = BodyItem::create(local_manga.name);
        body_item->url = local_manga.name;
        body_item->set_description("Latest chapter: " + local_manga.chapters.front().name + "\nUpdated " + seconds_to_relative_time_str(time_now - local_manga.modified_time_seconds));
        body_item->set_description_color(get_theme().faded_text_color);
        body_item->thumbnail_url = local_manga.chapters.back().pages.front().path.data;
        body_item->thumbnail_is_local = true;
        body_item->thumbnail_size = {101, 141};
        return body_item;
    }

    SearchResult LocalMangaSearchPage::search(const std::string &str, BodyItems &result_items) {
        time_t time_now = time(nullptr);
        for(const LocalManga &local_manga : manga_list) {
            if(string_find_fuzzy_case_insensitive(local_manga.name, str))
                result_items.push_back(local_manga_to_body_item(local_manga, time_now));
        }
        return SearchResult::OK;
    }

    PluginResult LocalMangaSearchPage::submit(const SubmitArgs &args, std::vector<Tab> &result_tabs) {
        if(get_config().local_manga_directory.empty()) {
            show_notification("QuickMedia", "local_manga_directory config is not set", Urgency::CRITICAL);
            return PluginResult::OK;
        }

        if(get_file_type(get_config().local_manga_directory) != FileType::DIRECTORY) {
            show_notification("QuickMedia", "local_manga_directory config is not set to a valid directory", Urgency::CRITICAL);
            return PluginResult::OK;
        }

        Path manga_url = Path(get_config().local_manga_directory).join(args.url);
        std::vector<LocalMangaChapter> chapters = get_chapters_in_manga(manga_url);

        const time_t time_now = time(nullptr);
        BodyItems chapters_items;

        for(const LocalMangaChapter &local_manga_chapter : chapters) {
            auto body_item = BodyItem::create(local_manga_chapter.name);
            body_item->url = local_manga_chapter.name;
            body_item->set_description("Updated " + seconds_to_relative_time_str(time_now - local_manga_chapter.modified_time_seconds));
            body_item->set_description_color(get_theme().faded_text_color);
            chapters_items.push_back(std::move(body_item));
        }

        auto chapters_body = create_body();
        chapters_body->set_items(std::move(chapters_items));

        auto chapters_page = std::make_unique<LocalMangaChaptersPage>(program, args.title, args.url, args.thumbnail_url);
        result_tabs.push_back(Tab{std::move(chapters_body), std::move(chapters_page), create_search_bar("Search...", SEARCH_DELAY_FILTER)});
        return PluginResult::OK;
    }

    PluginResult LocalMangaSearchPage::lazy_fetch(BodyItems &result_items) {
        manga_list.clear();

        if(get_config().local_manga_directory.empty()) {
            show_notification("QuickMedia", "local_manga_directory config is not set", Urgency::CRITICAL);
            return PluginResult::OK;
        }

        if(get_file_type(get_config().local_manga_directory) != FileType::DIRECTORY) {
            show_notification("QuickMedia", "local_manga_directory config is not set to a valid directory", Urgency::CRITICAL);
            return PluginResult::OK;
        }

        manga_list = get_manga_in_directory(get_config().local_manga_directory);

        const time_t time_now = time(nullptr);
        for(const LocalManga &local_manga : manga_list) {
            result_items.push_back(local_manga_to_body_item(local_manga, time_now));
        }

        return PluginResult::OK;
    }

    PluginResult LocalMangaChaptersPage::submit(const SubmitArgs &args, std::vector<Tab> &result_tabs) {
        if(get_config().local_manga_directory.empty()) {
            show_notification("QuickMedia", "local_manga_directory config is not set", Urgency::CRITICAL);
            return PluginResult::OK;
        }

        if(get_file_type(get_config().local_manga_directory) != FileType::DIRECTORY) {
            show_notification("QuickMedia", "local_manga_directory config is not set to a valid directory", Urgency::CRITICAL);
            return PluginResult::OK;
        }

        Path chapter_url = Path(get_config().local_manga_directory).join(content_url).join(args.url);
        std::vector<LocalMangaPage> pages = get_images_in_manga(chapter_url);
        result_tabs.push_back(Tab{nullptr, std::make_unique<LocalMangaImagesPage>(program, content_title, args.title, args.url, thumbnail_url, std::move(pages)), nullptr});
        return PluginResult::OK;
    }

    bool LocalMangaChaptersPage::extract_id_from_url(const std::string &url, std::string &manga_id) const {
        manga_id = url;
        return true;
    }

    ImageResult LocalMangaImagesPage::get_number_of_images(int &num_images) {
        num_images = 0;
        ImageResult image_result = get_image_urls_for_chapter(url);
        if(image_result != ImageResult::OK) return image_result;
        num_images = chapter_image_urls.size();
        return ImageResult::OK;
    }

    ImageResult LocalMangaImagesPage::for_each_page_in_chapter(PageCallback callback) {
        ImageResult image_result = get_image_urls_for_chapter(url);
        if(image_result != ImageResult::OK) return image_result;
        for(const std::string &url : chapter_image_urls) {
            if(!callback(url))
                break;
        }
        return ImageResult::OK;
    }

    ImageResult LocalMangaImagesPage::get_image_urls_for_chapter(const std::string&) {
        if(!chapter_image_urls.empty())
            return ImageResult::OK;

        for(const LocalMangaPage &local_manga_page : pages) {
            chapter_image_urls.push_back(local_manga_page.path.data);
        }
        return ImageResult::OK;
    }
}