#include "../../plugins/Youtube.hpp"
#include "../../include/Storage.hpp"
#include "../../include/NetUtils.hpp"
#include "../../include/StringUtils.hpp"
#include "../../include/Scale.hpp"
#include "../../include/Notification.hpp"
extern "C" {
#include <HtmlParser.h>
}
#include <json/writer.h>
#include <string.h>
#include <unistd.h>

namespace QuickMedia {
    // This is a common setup of text in the youtube json
    static std::optional<std::string> yt_json_get_text(const Json::Value &json, const char *root_name) {
        if(!json.isObject())
            return std::nullopt;

        const Json::Value &text_json = json[root_name];
        if(!text_json.isObject())
            return std::nullopt;

        const Json::Value &simple_text_json = text_json["simpleText"];
        if(simple_text_json.isString()) {
            return simple_text_json.asString();
        } else {
            const Json::Value &runs_json = text_json["runs"];
            if(!runs_json.isArray() || runs_json.empty())
                return std::nullopt;

            std::string result;
            for(const Json::Value &first_runs_json : runs_json) {
                if(!first_runs_json.isObject())
                    continue;

                const Json::Value &text_json = first_runs_json["text"];
                if(text_json.isString())
                    result += text_json.asString();
            }
            if(!result.empty())
                return result;
        }

        return std::nullopt;
    }

    struct Thumbnail {
        const char *url;
        int width;
        int height;
    };

    enum class ThumbnailSize {
        SMALLEST,
        MEDIUM,
        LARGEST
    };

    static std::optional<Thumbnail> yt_json_get_thumbnail(const Json::Value &thumbnail_json, ThumbnailSize thumbnail_size) {
        if(!thumbnail_json.isObject())
            return std::nullopt;

        const Json::Value &thumbnails_json = thumbnail_json["thumbnails"];
        if(!thumbnails_json.isArray())
            return std::nullopt;

        std::vector<Thumbnail> thumbnails;
        for(const Json::Value &thumbnail_data_json : thumbnails_json) {
            if(!thumbnail_data_json.isObject())
                continue;

            const Json::Value &url_json = thumbnail_data_json["url"];
            if(!url_json.isString())
                continue;

            const Json::Value &width_json = thumbnail_data_json["width"];
            if(!width_json.isInt())
                continue;

            const Json::Value &height_json = thumbnail_data_json["height"];
            if(!height_json.isInt())
                continue;

            thumbnails.push_back({ url_json.asCString(), width_json.asInt(), height_json.asInt() });
        }

        if(thumbnails.empty())
            return std::nullopt;

        switch(thumbnail_size) {
            case ThumbnailSize::SMALLEST:
                return *std::min_element(thumbnails.begin(), thumbnails.end(), [](const Thumbnail &thumbnail1, const Thumbnail &thumbnail2) {
                    int size1 = thumbnail1.width * thumbnail1.height;
                    int size2 = thumbnail2.width * thumbnail2.height;
                    return size1 < size2;
                });
            case ThumbnailSize::MEDIUM: {
                std::sort(thumbnails.begin(), thumbnails.end(), [](const Thumbnail &thumbnail1, const Thumbnail &thumbnail2) {
                    int size1 = thumbnail1.width * thumbnail1.height;
                    int size2 = thumbnail2.width * thumbnail2.height;
                    return size1 < size2;
                });
                return thumbnails[thumbnails.size() / 2];
            }
            case ThumbnailSize::LARGEST:
                return *std::max_element(thumbnails.begin(), thumbnails.end(), [](const Thumbnail &thumbnail1, const Thumbnail &thumbnail2) {
                    int size1 = thumbnail1.width * thumbnail1.height;
                    int size2 = thumbnail2.width * thumbnail2.height;
                    return size1 < size2;
                });
        }

        return std::nullopt;
    }

    static std::shared_ptr<BodyItem> parse_common_video_item(const Json::Value &video_item_json, std::unordered_set<std::string> &added_videos) {
        const Json::Value &video_id_json = video_item_json["videoId"];
        if(!video_id_json.isString())
            return nullptr;

        std::string video_id_str = video_id_json.asString();
        if(added_videos.find(video_id_str) != added_videos.end())
            return nullptr;

        std::optional<std::string> title = yt_json_get_text(video_item_json, "title");
        if(!title)
            return nullptr;

        std::optional<std::string> date = yt_json_get_text(video_item_json, "publishedTimeText");
        std::optional<std::string> view_count_text = yt_json_get_text(video_item_json, "viewCountText");
        std::optional<std::string> owner_text = yt_json_get_text(video_item_json, "shortBylineText");
        std::optional<std::string> description_snippet = yt_json_get_text(video_item_json, "descriptionSnippet");
        std::optional<std::string> length = yt_json_get_text(video_item_json, "lengthText");
        if(!length) {
            const Json::Value &thumbnail_overlays_json = video_item_json["thumbnailOverlays"];
            if(thumbnail_overlays_json.isArray() && !thumbnail_overlays_json.empty()) {
                const Json::Value &thumbnail_overlay_json = thumbnail_overlays_json[0];
                if(thumbnail_overlay_json.isObject())
                    length = yt_json_get_text(thumbnail_overlay_json["thumbnailOverlayTimeStatusRenderer"], "text");
            }
        }

        std::string scheduled_text;
        const Json::Value &upcoming_event_data_json = video_item_json["upcomingEventData"];
        if(upcoming_event_data_json.isObject()) {
            const Json::Value &start_time_json = upcoming_event_data_json["startTime"];
            if(!start_time_json.isString())
                return nullptr;

            std::optional<std::string> upcoming_event_text = yt_json_get_text(upcoming_event_data_json, "upcomingEventText");
            if(!upcoming_event_text)
                return nullptr;

            time_t start_time = strtol(start_time_json.asCString(), nullptr, 10);
            struct tm message_tm;
            localtime_r(&start_time, &message_tm);
            char time_str[128] = {0};
            strftime(time_str, sizeof(time_str) - 1, "%a %b %d %H:%M", &message_tm);
            string_replace_all(upcoming_event_text.value(), "DATE_PLACEHOLDER", time_str);
            scheduled_text = std::move(upcoming_event_text.value());
        }
        
        auto body_item = BodyItem::create(title.value());
        std::string desc;
        if(view_count_text)
            desc += view_count_text.value();
        if(date) {
            if(!desc.empty())
                desc += " • ";
            desc += date.value();
        }
        if(!scheduled_text.empty()) {
            if(!desc.empty())
                desc += " • ";
            desc += scheduled_text;
        }
        if(length) {
            if(!desc.empty())
                desc += '\n';
            desc += length.value();
        }
        if(owner_text) {
            if(!desc.empty())
                desc += '\n';
            desc += owner_text.value();
        }
        if(description_snippet) {
            if(!desc.empty())
                desc += '\n';
            desc += '\n';
            desc += description_snippet.value();
        }
        body_item->set_description(std::move(desc));
        body_item->set_description_color(sf::Color(179, 179, 179));
        if(scheduled_text.empty())
            body_item->url = "https://www.youtube.com/watch?v=" + video_id_str;

        body_item->thumbnail_url = "https://img.youtube.com/vi/" + video_id_str + "/mqdefault.jpg";
        body_item->thumbnail_size = sf::Vector2i(192, 108);

        added_videos.insert(video_id_str);
        return body_item;
    }

    static std::shared_ptr<BodyItem> parse_content_video_renderer(const Json::Value &content_item_json, std::unordered_set<std::string> &added_videos) {
        if(!content_item_json.isObject())
            return nullptr;
        
        const Json::Value &video_renderer_json = content_item_json["videoRenderer"];
        if(!video_renderer_json.isObject())
            return nullptr;

        return parse_common_video_item(video_renderer_json, added_videos);
    }

    static std::shared_ptr<BodyItem> parse_channel_renderer(const Json::Value &channel_renderer_json) {
        if(!channel_renderer_json.isObject())
            return nullptr;

        const Json::Value &channel_id_json = channel_renderer_json["channelId"];
        if(!channel_id_json.isString())
            return nullptr;

        std::optional<std::string> title = yt_json_get_text(channel_renderer_json, "title");
        if(!title)
            return nullptr;

        std::optional<std::string> description = yt_json_get_text(channel_renderer_json, "descriptionSnippet");
        std::optional<std::string> video_count = yt_json_get_text(channel_renderer_json, "videoCountText");
        std::optional<std::string> subscribers = yt_json_get_text(channel_renderer_json, "subscriberCountText");

        const Json::Value &thumbnail_json = channel_renderer_json["thumbnail"];
        std::optional<Thumbnail> thumbnail = yt_json_get_thumbnail(thumbnail_json, ThumbnailSize::LARGEST);

        auto body_item = BodyItem::create(title.value());
        std::string desc;
        if(subscribers)
            desc += subscribers.value();
        if(video_count) {
            if(!desc.empty())
                desc += " • ";
            desc += video_count.value();
            if(strcmp(video_count.value().c_str(), "1") == 0)
                desc += " video";
            else
                desc += " videos";
        }
        if(description) {
            if(!desc.empty())
                desc += '\n';
            desc += '\n';
            desc += description.value();
        }
        body_item->set_description(std::move(desc));
        body_item->set_description_color(sf::Color(179, 179, 179));
        body_item->url = "https://www.youtube.com/channel/" + channel_id_json.asString();
        if(thumbnail) {
            body_item->thumbnail_url = std::string("https:") + thumbnail->url;
            body_item->thumbnail_mask_type = ThumbnailMaskType::CIRCLE;
            body_item->thumbnail_size.x = thumbnail->width;
            body_item->thumbnail_size.y = thumbnail->height;
            body_item->thumbnail_size = clamp_to_size(body_item->thumbnail_size, sf::Vector2i(136, 136));
        }
        return body_item;
    }

    // Returns empty string if continuation token can't be found
    static std::string item_section_renderer_get_continuation_token(const Json::Value &item_section_renderer_json) {
        const Json::Value &continuation_item_renderer_json = item_section_renderer_json["continuationItemRenderer"];
        if(!continuation_item_renderer_json.isObject())
            return "";

        const Json::Value &continuation_endpoint_json = continuation_item_renderer_json["continuationEndpoint"];
        if(!continuation_endpoint_json.isObject())
            return "";

        const Json::Value &continuation_command_json = continuation_endpoint_json["continuationCommand"];
        if(!continuation_command_json.isObject())
            return "";

        const Json::Value &token_json = continuation_command_json["token"];
        if(!token_json.isString())
            return "";
        
        return token_json.asString();
    }

    static void parse_item_section_renderer(const Json::Value &item_section_renderer_json, std::unordered_set<std::string> &added_videos, BodyItems &result_items) {
        if(!item_section_renderer_json.isObject())
            return;

        const Json::Value &item_contents_json = item_section_renderer_json["contents"];
        if(!item_contents_json.isArray())
            return;

        for(const Json::Value &content_item_json : item_contents_json) {
            if(!content_item_json.isObject())
                continue;

            for(Json::Value::const_iterator it = content_item_json.begin(); it != content_item_json.end(); ++it) {
                Json::Value key = it.key();
                if(key.isString() && strcmp(key.asCString(), "shelfRenderer") == 0) {
                    const Json::Value &shelf_renderer_json = *it;
                    if(!shelf_renderer_json.isObject())
                        continue;

                    const Json::Value &item_content_json = shelf_renderer_json["content"];
                    if(!item_content_json.isObject())
                        continue;

                    const Json::Value &vertical_list_renderer_json = item_content_json["verticalListRenderer"];
                    if(!vertical_list_renderer_json.isObject())
                        continue;

                    const Json::Value &items_json = vertical_list_renderer_json["items"];
                    if(!items_json.isArray())
                        continue;
                    
                    for(const Json::Value &item_json : items_json) {
                        std::shared_ptr<BodyItem> body_item = parse_content_video_renderer(item_json, added_videos);
                        if(body_item)
                            result_items.push_back(std::move(body_item));
                    }
                } else if(key.isString() && strcmp(key.asCString(), "channelRenderer") == 0) {
                    std::shared_ptr<BodyItem> body_item = parse_channel_renderer(*it);
                    if(body_item)
                        result_items.push_back(std::move(body_item));
                } else {
                    std::shared_ptr<BodyItem> body_item = parse_content_video_renderer(content_item_json, added_videos);
                    if(body_item)
                        result_items.push_back(std::move(body_item));
                }
            }
        }
    }

    static std::mutex cookies_mutex;
    static std::string cookies_filepath;

    static void remove_cookies_file_at_exit() {
        std::lock_guard<std::mutex> lock(cookies_mutex);
        if(!cookies_filepath.empty())
            remove(cookies_filepath.c_str());
    }

    static std::vector<CommandArg> get_cookies() {
        std::lock_guard<std::mutex> lock(cookies_mutex);
        if(cookies_filepath.empty()) {
            char filename[] = "/tmp/quickmedia.youtube.cookie.XXXXXX";
            int fd = mkstemp(filename);
            if(fd == -1)
                return {};
            close(fd);

            cookies_filepath = filename;
            atexit(remove_cookies_file_at_exit);

            // TODO: Is there any way to bypass this? this is needed to set VISITOR_INFO1_LIVE which is required to read comments
            const char *args[] = { "curl", "-I", "-s", "-b", cookies_filepath.c_str(), "-c", cookies_filepath.c_str(), "https://www.youtube.com/subscription_manager?disable_polymer=1", nullptr };
            if(exec_program(args, nullptr, nullptr) != 0)
                fprintf(stderr, "Failed to fetch cookies to view youtube comments\n");
        }

        return {
            CommandArg{ "-b", cookies_filepath },
            CommandArg{ "-c", cookies_filepath }
        };
    }

    static std::string remove_index_from_playlist_url(const std::string &url) {
        std::string result = url;
        size_t index = result.rfind("&index=");
        if(index == std::string::npos)
            return result;
        return result.substr(0, index);
    }

    static std::shared_ptr<BodyItem> parse_compact_video_renderer_json(const Json::Value &item_json, std::unordered_set<std::string> &added_videos) {
        const Json::Value &compact_video_renderer_json = item_json["compactVideoRenderer"];
        if(!compact_video_renderer_json.isObject())
            return nullptr;

        return parse_common_video_item(compact_video_renderer_json, added_videos);
    }

    static std::string item_section_renderer_get_continuation(const Json::Value &item_section_renderer) {
        if(!item_section_renderer.isObject())
            return "";

        const Json::Value &continuations_json = item_section_renderer["continuations"];
        if(!continuations_json.isArray())
            return "";

        for(const Json::Value &json_item : continuations_json) {
            if(!json_item.isObject())
                continue;

            const Json::Value &next_continuation_data_json = json_item["nextContinuationData"];
            if(!next_continuation_data_json.isObject())
                continue;

            const Json::Value &continuation_json = next_continuation_data_json["continuation"];
            if(continuation_json.isString())
                return continuation_json.asString();
        }

        return "";
    }

    static BodyItems parse_channel_videos(const Json::Value &json_root, std::string &continuation_token, std::unordered_set<std::string> &added_videos) {
        BodyItems body_items;
        if(!json_root.isArray())
            return body_items;

        std::string new_continuation_token;
        for(const Json::Value &json_item : json_root) {
            if(!json_item.isObject())
                continue;

            const Json::Value &response_json = json_item["response"];
            if(!response_json.isObject())
                continue;

            const Json::Value &contents_json = response_json["contents"];
            if(!contents_json.isObject())
                continue;

            const Json::Value &tcbrr_json = contents_json["twoColumnBrowseResultsRenderer"];
            if(!tcbrr_json.isObject())
                continue;

            const Json::Value &tabs_json = tcbrr_json["tabs"];
            if(!tabs_json.isArray())
                continue;

            for(const Json::Value &tab_json : tabs_json) {
                if(!tab_json.isObject())
                    continue;

                const Json::Value &tab_renderer_json = tab_json["tabRenderer"];
                if(!tab_renderer_json.isObject())
                    continue;
                
                const Json::Value &content_json = tab_renderer_json["content"];
                if(!content_json.isObject())
                    continue;

                const Json::Value &section_list_renderer = content_json["sectionListRenderer"];
                if(!section_list_renderer.isObject())
                    continue;

                const Json::Value &contents2_json = section_list_renderer["contents"];
                if(!contents2_json.isArray())
                    continue;
                
                for(const Json::Value &content_item_json : contents2_json) {
                    if(!content_item_json.isObject())
                        continue;
                    
                    const Json::Value &item_section_renderer_json = content_item_json["itemSectionRenderer"];
                    if(!item_section_renderer_json.isObject())
                        continue;

                    const Json::Value &item_contents_json = item_section_renderer_json["contents"];
                    if(!item_contents_json.isArray())
                        continue;

                    for(const Json::Value &content_json : item_contents_json) {
                        if(!content_json.isObject())
                            continue;

                        const Json::Value &grid_renderer_json = content_json["gridRenderer"];
                        if(!grid_renderer_json.isObject())
                            continue;

                        const Json::Value &items_json = grid_renderer_json["items"];
                        if(!items_json.isArray())
                            continue;

                        for(const Json::Value &item_json : items_json) {
                            if(!item_json.isObject())
                                continue;

                            if(new_continuation_token.empty())
                                new_continuation_token = item_section_renderer_get_continuation_token(item_json);

                            const Json::Value &grid_video_renderer = item_json["gridVideoRenderer"];
                            if(!grid_video_renderer.isObject())
                                continue;

                            auto body_item = parse_common_video_item(grid_video_renderer, added_videos);
                            if(body_item)
                                body_items.push_back(std::move(body_item));
                        }
                    }
                }
            }
        }

        if(!new_continuation_token.empty())
            continuation_token = std::move(new_continuation_token);

        return body_items;
    }

    static void parse_section_list_renderer(const Json::Value &section_list_renderer_json, std::string &continuation_token, BodyItems &result_items, std::unordered_set<std::string> &added_videos) {
        if(!section_list_renderer_json.isObject())
            return;

        const Json::Value &contents2_json = section_list_renderer_json["contents"];
        if(!contents2_json.isArray())
            return;
        
        for(const Json::Value &item_json : contents2_json) {
            if(!item_json.isObject())
                continue;

            if(continuation_token.empty())
                continuation_token = item_section_renderer_get_continuation_token(item_json);
            
            const Json::Value &item_section_renderer_json = item_json["itemSectionRenderer"];
            if(!item_section_renderer_json.isObject())
                continue;

            parse_item_section_renderer(item_section_renderer_json, added_videos, result_items);
        }
    }

    SearchResult YoutubeSearchPage::search(const std::string &str, BodyItems &result_items) {
        continuation_token.clear();
        current_page = 0;
        added_videos.clear();

        search_url = "https://www.youtube.com/results?search_query=";
        search_url += url_param_encode(str);

        std::vector<CommandArg> additional_args = {
            { "-H", "x-spf-referer: " + search_url },
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-youtube-client-version: 2.20200626.03.00" },
            { "-H", "referer: " + search_url }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, search_url + "&pbj=1", std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_search_result(result);

        if(!json_root.isArray())
            return SearchResult::ERR;

        for(const Json::Value &json_item : json_root) {
            if(!json_item.isObject())
                continue;

            const Json::Value &response_json = json_item["response"];
            if(!response_json.isObject())
                continue;

            const Json::Value &contents_json = response_json["contents"];
            if(!contents_json.isObject())
                continue;

            const Json::Value &tcsrr_json = contents_json["twoColumnSearchResultsRenderer"];
            if(!tcsrr_json.isObject())
                continue;

            const Json::Value &primary_contents_json = tcsrr_json["primaryContents"];
            if(!primary_contents_json.isObject())
                continue;

            parse_section_list_renderer(primary_contents_json["sectionListRenderer"], continuation_token, result_items, added_videos);
        }

        return SearchResult::OK;
    }

    PluginResult YoutubeSearchPage::get_page(const std::string&, int page, BodyItems &result_items) {
        while(current_page < page) {
            PluginResult plugin_result = search_get_continuation(search_url, continuation_token, result_items);
            if(plugin_result != PluginResult::OK) return plugin_result;
            ++current_page;
        }
        return PluginResult::OK;
    }

    PluginResult YoutubeSearchPage::submit(const std::string &title, const std::string &url, std::vector<Tab> &result_tabs) {
        if(url.empty())
            return PluginResult::OK;

        if(strncmp(url.c_str(), "https://www.youtube.com/channel/", 32) == 0) {
            // TODO: Make all pages (for all services) lazy fetch in a similar manner!
            result_tabs.push_back(Tab{create_body(), std::make_unique<YoutubeChannelPage>(program, url, "", title), create_search_bar("Search...", 350)});
        } else {
            result_tabs.push_back(Tab{nullptr, std::make_unique<YoutubeVideoPage>(program, url), nullptr});
        }
        return PluginResult::OK;
    }

    PluginResult YoutubeSearchPage::search_get_continuation(const std::string &url, const std::string &current_continuation_token, BodyItems &result_items) {
        std::string next_url = url + "&pbj=1&ctoken=" + current_continuation_token;

        std::vector<CommandArg> additional_args = {
            { "-H", "x-spf-referer: " + url },
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-spf-previous: " + url },
            { "-H", "x-youtube-client-version: 2.20200626.03.00" },
            { "-H", "referer: " + url }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, next_url, std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);

        if(!json_root.isArray())
            return PluginResult::ERR;

        std::string new_continuation_token;
        for(const Json::Value &json_item : json_root) {
            if(!json_item.isObject())
                continue;

            const Json::Value &response_json = json_item["response"];
            if(!response_json.isObject())
                continue;

            const Json::Value &on_response_received_commands_json = response_json["onResponseReceivedCommands"];
            if(!on_response_received_commands_json.isArray())
                continue;

            for(const Json::Value &response_received_command : on_response_received_commands_json) {
                if(!response_received_command.isObject())
                    continue;

                const Json::Value &append_continuation_items_action_json = response_received_command["appendContinuationItemsAction"];
                if(!append_continuation_items_action_json.isObject())
                    continue;

                const Json::Value &continuation_items_json = append_continuation_items_action_json["continuationItems"];
                if(!continuation_items_json.isArray())
                    continue;

                for(const Json::Value &continuation_item : continuation_items_json) {
                    if(!continuation_item.isObject())
                        continue;

                    if(new_continuation_token.empty()) {
                        // Note: item_section_renderer is compatible with continuation_item
                        new_continuation_token = item_section_renderer_get_continuation_token(continuation_item);
                    }

                    const Json::Value &item_section_renderer_json = continuation_item["itemSectionRenderer"];
                    if(!item_section_renderer_json.isObject())
                        continue;

                    parse_item_section_renderer(item_section_renderer_json, added_videos, result_items);
                }
            }
        }

        if(!new_continuation_token.empty())
            continuation_token = std::move(new_continuation_token);

        return PluginResult::OK;
    }

    PluginResult YoutubeCommentsPage::get_page(const std::string&, int page, BodyItems &result_items) {
        while(current_page < page) {
            PluginResult plugin_result = lazy_fetch(result_items);
            if(plugin_result != PluginResult::OK) return plugin_result;
            ++current_page;
        }
        return PluginResult::OK;
    }

    PluginResult YoutubeCommentsPage::submit(const std::string&, const std::string &url, std::vector<Tab> &result_tabs) {
        if(url.empty())
            return PluginResult::OK;
        result_tabs.push_back(Tab{create_body(), std::make_unique<YoutubeCommentRepliesPage>(program, xsrf_token, url), nullptr});
        return PluginResult::OK;
    }

    static std::string comment_thread_renderer_get_replies_continuation(const Json::Value &comment_thread_renderer_json) {
        if(!comment_thread_renderer_json.isObject())
            return "";

        const Json::Value &replies_json = comment_thread_renderer_json["replies"];
        if(!replies_json.isObject())
            return "";

        const Json::Value &comment_replies_renderer = replies_json["commentRepliesRenderer"];
        if(!comment_replies_renderer.isObject())
            return "";

        // item_section_renderer_get_continuation is compatible with commentRepliesRenderer
        return item_section_renderer_get_continuation(comment_replies_renderer);
    }

    // Returns empty string if comment is not hearted
    static std::string comment_renderer_get_hearted_tooltip(const Json::Value &comment_renderer_json) {
        const Json::Value &action_buttons_json = comment_renderer_json["actionButtons"];
        if(!action_buttons_json.isObject())
            return "";

        const Json::Value &comment_action_buttons_renderer_json = action_buttons_json["commentActionButtonsRenderer"];
        if(!comment_action_buttons_renderer_json.isObject())
            return "";

        const Json::Value &creator_heart_json = comment_action_buttons_renderer_json["creatorHeart"];
        if(!creator_heart_json.isObject())
            return "";

        const Json::Value &creator_heart_renderer_json = creator_heart_json["creatorHeartRenderer"];
        if(!creator_heart_renderer_json.isObject())
            return "";

        const Json::Value &hearted_tooltip_json = creator_heart_renderer_json["heartedTooltip"];
        if(!hearted_tooltip_json.isString())
            return "";

        return hearted_tooltip_json.asString();
    }

    static std::shared_ptr<BodyItem> comment_renderer_to_body_item(const Json::Value &comment_renderer_json) {
        if(!comment_renderer_json.isObject())
            return nullptr;

        std::optional<std::string> author_text = yt_json_get_text(comment_renderer_json, "authorText");
        if(!author_text)
            return nullptr;

        std::string author = author_text.value();
        std::optional<std::string> published_time_text = yt_json_get_text(comment_renderer_json, "publishedTimeText");
        if(published_time_text)
            author += " - " + published_time_text.value();

        auto body_item = BodyItem::create("");
        body_item->set_author(std::move(author));
        std::string description;

        const Json::Value &author_is_channel_owner_json = comment_renderer_json["authorIsChannelOwner"];
        if(author_is_channel_owner_json.isBool() && author_is_channel_owner_json.asBool())
            body_item->set_author_color(sf::Color(150, 255, 150));

        std::optional<std::string> comment = yt_json_get_text(comment_renderer_json, "contentText");
        if(comment)
            description = comment.value();
        
        std::optional<Thumbnail> thumbnail = yt_json_get_thumbnail(comment_renderer_json["authorThumbnail"], ThumbnailSize::SMALLEST);
        if(thumbnail) {
            body_item->thumbnail_url = thumbnail->url;
            body_item->thumbnail_mask_type = ThumbnailMaskType::CIRCLE;
            body_item->thumbnail_size.x = thumbnail->width;
            body_item->thumbnail_size.y = thumbnail->height;
            body_item->thumbnail_size = body_item->thumbnail_size;
        }

        const Json::Value &like_count_json = comment_renderer_json["likeCount"];
        if(like_count_json.isInt64()) {
            if(!description.empty())
                description += '\n';
            description += "👍 " + std::to_string(like_count_json.asInt64());
        }

        const Json::Value &reply_count_json = comment_renderer_json["replyCount"];
        if(reply_count_json.isInt64() && reply_count_json.asInt64() > 0) {
            if(!description.empty())
                description += '\n';

            if(reply_count_json.asInt64() == 1)
                description += "1 reply";
            else
                description += std::to_string(reply_count_json.asInt64()) + " replies";
        }

        std::string hearted_tooltip = comment_renderer_get_hearted_tooltip(comment_renderer_json);
        if(!hearted_tooltip.empty()) {
            if(!description.empty())
                description += " - ";
            description += std::move(hearted_tooltip);
        }

        body_item->set_description(std::move(description));
        return body_item;
    }

    PluginResult YoutubeCommentsPage::lazy_fetch(BodyItems &result_items) {
        if(continuation_token.empty())
            return PluginResult::OK;

        std::string next_url = "https://www.youtube.com/comment_service_ajax?action_get_comments=1&pbj=1&ctoken=";
        next_url += url_param_encode(continuation_token);
        //next_url += "&continuation=";
        //next_url += url_param_encode(comments_continuation_token);
        next_url += "&type=next";

        std::vector<CommandArg> additional_args = {
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-youtube-client-version: 2.20210308.08.00" },
            { "-F", "session_token=" + xsrf_token }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, next_url, std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);

        if(!json_root.isObject())
            return PluginResult::ERR;

        const Json::Value &xsrf_token_json = json_root["xsrf_token"];
        if(xsrf_token_json.isString())
            xsrf_token = xsrf_token_json.asString();

        const Json::Value &response_json = json_root["response"];
        if(!response_json.isObject())
            return PluginResult::ERR;

        const Json::Value &continuation_contents_json = response_json["continuationContents"];
        if(!continuation_contents_json.isObject())
            return PluginResult::ERR;

        const Json::Value &item_section_continuation_json = continuation_contents_json["itemSectionContinuation"];
        if(!item_section_continuation_json.isObject())
            return PluginResult::ERR;

        const Json::Value &contents_json = item_section_continuation_json["contents"];
        if(contents_json.isArray()) {
            for(const Json::Value &json_item : contents_json) {
                if(!json_item.isObject())
                    continue;

                const Json::Value &comment_thread_renderer = json_item["commentThreadRenderer"];
                if(!comment_thread_renderer.isObject())
                    continue;

                const Json::Value &comment_json = comment_thread_renderer["comment"];
                if(!comment_json.isObject())
                    continue;

                auto body_item = comment_renderer_to_body_item(comment_json["commentRenderer"]);
                if(body_item) {
                    body_item->url = comment_thread_renderer_get_replies_continuation(comment_thread_renderer);
                    result_items.push_back(std::move(body_item));
                }
            }
        }

        continuation_token = item_section_renderer_get_continuation(item_section_continuation_json);

        return PluginResult::OK;
    }

    PluginResult YoutubeCommentRepliesPage::get_page(const std::string&, int page, BodyItems &result_items) {
        while(current_page < page) {
            PluginResult plugin_result = lazy_fetch(result_items);
            if(plugin_result != PluginResult::OK) return plugin_result;
            ++current_page;
        }
        return PluginResult::OK;
    }

    PluginResult YoutubeCommentRepliesPage::submit(const std::string&, const std::string&, std::vector<Tab>&) {
        return PluginResult::OK;
    }

    PluginResult YoutubeCommentRepliesPage::lazy_fetch(BodyItems &result_items) {
        if(continuation_token.empty())
            return PluginResult::OK;

        std::string next_url = "https://www.youtube.com/comment_service_ajax?action_get_comment_replies=1&pbj=1&ctoken=";
        next_url += url_param_encode(continuation_token);
        //next_url += "&continuation=";
        //next_url += url_param_encode(comments_continuation_token);
        next_url += "&type=next";

        std::vector<CommandArg> additional_args = {
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-youtube-client-version: 2.20210308.08.00" },
            { "-F", "session_token=" + xsrf_token }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, next_url, std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);

        if(!json_root.isArray())
            return PluginResult::ERR;

        for(const Json::Value &json_item : json_root) {
            if(!json_item.isObject())
                continue;

            const Json::Value &xsrf_token_json = json_item["xsrf_token"];
            if(xsrf_token_json.isString())
                xsrf_token = xsrf_token_json.asString();

            const Json::Value &response_json = json_item["response"];
            if(!response_json.isObject())
                continue;

            const Json::Value &continuation_contents_json = response_json["continuationContents"];
            if(!continuation_contents_json.isObject())
                continue;

            const Json::Value &comment_replies_continuation_json = continuation_contents_json["commentRepliesContinuation"];
            if(!comment_replies_continuation_json.isObject())
                continue;

            const Json::Value &contents_json = comment_replies_continuation_json["contents"];
            if(contents_json.isArray()) {
                for(const Json::Value &content_item_json : contents_json) {
                    if(!content_item_json.isObject())
                        continue;

                    auto body_item = comment_renderer_to_body_item(content_item_json["commentRenderer"]);
                    if(body_item)
                        result_items.push_back(std::move(body_item));
                }
            }

            // item_section_renderer_get_continuation is compatible with commentRepliesContinuation
            continuation_token = item_section_renderer_get_continuation(comment_replies_continuation_json);
            return PluginResult::OK;
        }

        return PluginResult::ERR;
    }

    static std::string channel_url_extract_id(const std::string &channel_url) {
        size_t index = channel_url.find("channel/");
        if(index == std::string::npos)
            return "";
        
        index += 8;
        size_t end_index = channel_url.find('/', index);
        if(end_index == std::string::npos)
            return channel_url.substr(index);

        return channel_url.substr(index, end_index - index);
    }

    SearchResult YoutubeChannelPage::search(const std::string &str, BodyItems &result_items) {
        added_videos.clear();
        continuation_token.clear();
        current_page = 0;
        if(str.empty())
            return plugin_result_to_search_result(lazy_fetch(result_items));

        std::string next_url = "https://www.youtube.com/youtubei/v1/browse?key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8";

        Json::Value request_json(Json::objectValue);
        Json::Value context_json(Json::objectValue);
        Json::Value client_json(Json::objectValue);
        client_json["hl"] = "en";
        client_json["gl"] = "US";
        client_json["deviceMake"] = "";
        client_json["deviceModel"] = "";
        client_json["userAgent"] = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36";
        client_json["clientName"] = "WEB";
        client_json["clientVersion"] = "2.20210304.08.01";
        client_json["osName"] = "X11";
        client_json["osVersion"] = "";
        client_json["originalUrl"] = url + "/videos";
        context_json["client"] = std::move(client_json);
        request_json["context"] = std::move(context_json);
        request_json["browseId"] = channel_url_extract_id(url);
        request_json["query"] = str;
        request_json["params"] = "EgZzZWFyY2g%3D";
        //request_json["continuation"] = current_continuation_token;

        Json::StreamWriterBuilder json_builder;
        json_builder["commentStyle"] = "None";
        json_builder["indentation"] = "";

        std::vector<CommandArg> additional_args = {
            { "-H", "authority: www.youtube.com" },
            { "-H", "x-origin: https://www.youtube.com" },
            { "-H", "content-type: application/json" },
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-youtube-client-version: 2.20200626.03.00" },
            { "-H", "referer: " + url + "/videos" },
            { "--data-raw", Json::writeString(json_builder, request_json) }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, next_url, std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_search_result(result);

        if(!json_root.isObject())
            return SearchResult::ERR;

        const Json::Value &contents_json = json_root["contents"];
        if(!contents_json.isObject())
            return SearchResult::ERR;

        const Json::Value &two_column_browse_results_renderer_json = contents_json["twoColumnBrowseResultsRenderer"];
        if(!two_column_browse_results_renderer_json.isObject())
            return SearchResult::ERR;
        
        const Json::Value &tabs_json = two_column_browse_results_renderer_json["tabs"];
        if(!tabs_json.isArray())
            return SearchResult::ERR;

        for(const Json::Value &json_item : tabs_json) {
            if(!json_item.isObject())
                continue;

            const Json::Value &expandable_tab_renderer_json = json_item["expandableTabRenderer"];
            if(!expandable_tab_renderer_json.isObject())
                continue;

            const Json::Value &content_json = expandable_tab_renderer_json["content"];
            if(!content_json.isObject())
                continue;

            parse_section_list_renderer(content_json["sectionListRenderer"], continuation_token, result_items, added_videos);
        }

        return SearchResult::OK;
    }

    PluginResult YoutubeChannelPage::get_page(const std::string&, int page, BodyItems &result_items) {
        while(current_page < page) {
            PluginResult plugin_result = search_get_continuation(url, continuation_token, result_items);
            if(plugin_result != PluginResult::OK) return plugin_result;
            ++current_page;
        }
        return PluginResult::OK;
    }

    PluginResult YoutubeChannelPage::search_get_continuation(const std::string &url, const std::string &current_continuation_token, BodyItems &result_items) {
        std::string next_url = "https://www.youtube.com/youtubei/v1/browse?key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8";

        Json::Value request_json(Json::objectValue);
        Json::Value context_json(Json::objectValue);
        Json::Value client_json(Json::objectValue);
        client_json["hl"] = "en";
        client_json["gl"] = "US";
        client_json["deviceMake"] = "";
        client_json["deviceModel"] = "";
        client_json["userAgent"] = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36";
        client_json["clientName"] = "WEB";
        client_json["clientVersion"] = "2.20210304.08.01";
        client_json["osName"] = "X11";
        client_json["osVersion"] = "";
        client_json["originalUrl"] = url + "/videos";
        context_json["client"] = std::move(client_json);
        request_json["context"] = std::move(context_json);
        request_json["continuation"] = current_continuation_token;

        Json::StreamWriterBuilder json_builder;
        json_builder["commentStyle"] = "None";
        json_builder["indentation"] = "";

        std::vector<CommandArg> additional_args = {
            { "-H", "authority: www.youtube.com" },
            { "-H", "x-origin: https://www.youtube.com" },
            { "-H", "content-type: application/json" },
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-youtube-client-version: 2.20200626.03.00" },
            { "-H", "referer: " + url + "/videos" },
            { "--data-raw", Json::writeString(json_builder, request_json) }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, next_url, std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);

        if(!json_root.isObject())
            return PluginResult::ERR;

        const Json::Value &on_response_received_actions_json = json_root["onResponseReceivedActions"];
        if(!on_response_received_actions_json.isArray())
            return PluginResult::ERR;

        std::string new_continuation_token;
        for(const Json::Value &json_item : on_response_received_actions_json) {
            if(!json_item.isObject())
                continue;

            const Json::Value &append_continuation_items_action_json = json_item["appendContinuationItemsAction"];
            if(!append_continuation_items_action_json.isObject())
                continue;

            const Json::Value &continuation_items_json = append_continuation_items_action_json["continuationItems"];
            if(!continuation_items_json.isArray())
                continue;

            for(const Json::Value &item_json : continuation_items_json) {
                if(!item_json.isObject())
                    continue;

                if(new_continuation_token.empty()) 
                    new_continuation_token = item_section_renderer_get_continuation_token(item_json);

                const Json::Value &grid_video_renderer = item_json["gridVideoRenderer"];
                if(grid_video_renderer.isObject()) {
                    auto body_item = parse_common_video_item(grid_video_renderer, added_videos);
                    if(body_item)
                        result_items.push_back(std::move(body_item));
                } else {
                    parse_item_section_renderer(item_json["itemSectionRenderer"], added_videos, result_items);
                }
            }
        }

        if(!new_continuation_token.empty())
            continuation_token = std::move(new_continuation_token);

        return PluginResult::OK;
    }

    PluginResult YoutubeChannelPage::submit(const std::string&, const std::string &url, std::vector<Tab> &result_tabs) {
        if(url.empty())
            return PluginResult::OK;
        result_tabs.push_back(Tab{nullptr, std::make_unique<YoutubeVideoPage>(program, url), nullptr});
        return PluginResult::OK;
    }

    PluginResult YoutubeChannelPage::lazy_fetch(BodyItems &result_items) {
        added_videos.clear();
        std::vector<CommandArg> additional_args = {
            { "-H", "x-spf-referer: " + url },
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-spf-previous: " + url },
            { "-H", "x-youtube-client-version: 2.20200626.03.00" },
            { "-H", "referer: " + url }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, url + "/videos?pbj=1", std::move(additional_args), true);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);
        result_items = parse_channel_videos(json_root, continuation_token, added_videos);
        return PluginResult::OK;
    }

    TrackResult YoutubeChannelPage::track(const std::string&) {
        size_t channel_id_start = url.find("/channel/");
        if(channel_id_start == std::string::npos) {
            show_notification("QuickMedia", "Unable to get channel id from " + url, Urgency::CRITICAL);
            return TrackResult::ERR;
        }

        channel_id_start += 9;
        size_t channel_id_end = url.find('/', channel_id_start);
        if(channel_id_end == std::string::npos) channel_id_end = url.size();
        std::string channel_id = url.substr(channel_id_start, channel_id_end - channel_id_start);
        if(channel_id.empty()) {
            show_notification("QuickMedia", "Unable to get channel id from " + url, Urgency::CRITICAL);
            return TrackResult::ERR;
        }

        Path subscriptions_path = get_storage_dir().join("subscriptions");
        if(create_directory_recursive(subscriptions_path) != 0) {
            show_notification("QuickMedia", "Failed to create directory: " + subscriptions_path.data, Urgency::CRITICAL);
            return TrackResult::ERR;
        }

        subscriptions_path.join("youtube.txt");
        std::unordered_set<std::string> channel_ids;
        std::string subscriptions_str;

        if(file_get_content(subscriptions_path, subscriptions_str) == 0) {
            string_split(subscriptions_str, '\n', [&channel_ids](const char *str, size_t size) {
                std::string line(str, size);
                line = strip(line);
                if(!line.empty())
                    channel_ids.insert(std::move(line));
                return true;
            });
        }

        auto it = channel_ids.find(channel_id);
        if(it == channel_ids.end()) {
            channel_ids.insert(channel_id);
            show_notification("QuickMedia", "Subscribed", Urgency::LOW);
        } else {
            channel_ids.erase(it);
            show_notification("QuickMedia", "Unsubscribed", Urgency::LOW);
        }

        std::string channel_ids_str;
        for(auto &it : channel_ids) {
            if(!channel_ids_str.empty())
                channel_ids_str += '\n';
            channel_ids_str += std::move(it);
        }

        if(file_overwrite_atomic(subscriptions_path, channel_ids_str) != 0) {
            show_notification("QuickMedia", "Failed to update subscriptions list with " + channel_id, Urgency::CRITICAL);
            return TrackResult::ERR;
        }

        return TrackResult::OK;
    }

    PluginResult YoutubeSubscriptionsPage::submit(const std::string&, const std::string &url, std::vector<Tab> &result_tabs) {
        result_tabs.push_back(Tab{nullptr, std::make_unique<YoutubeVideoPage>(program, url), nullptr});
        return PluginResult::OK;
    }

    struct SubscriptionEntry {
        std::string title;
        std::string video_id;
        time_t published = 0;
    };

    struct SubscriptionData {
        SubscriptionEntry subscription_entry;
        bool inside_entry = false;
    };

    static int string_view_equals(HtmlStringView *self, const char *sub) {
        const size_t sub_len = strlen(sub);
        return self->size == sub_len && memcmp(self->data, sub, sub_len) == 0;
    }

    // Returns relative time as a string (approximation)
    static std::string seconds_to_relative_time_str(time_t seconds) {
        seconds = std::max(0L, seconds);

        time_t minutes = seconds / 60;
        time_t hours = minutes / 60;
        time_t days = hours / 24;
        time_t months = days / 30;
        time_t years = days / 365;

        if(years >= 1)
            return std::to_string(years) + " year" + (years == 1 ? "" : "s") + " ago";
        else if(months >= 1)
            return std::to_string(months) + " month" + (months == 1 ? "" : "s") + " ago";
        else if(days >= 1)
            return std::to_string(days) + " day" + (days == 1 ? "" : "s") + " ago";
        else if(hours >= 1)
            return std::to_string(hours) + " hour" + (hours == 1 ? "" : "s") + " ago";
        else if(minutes >= 1)
            return std::to_string(minutes) + " minute" + (minutes == 1 ? "" : "s") + " ago";
        else
            return std::to_string(seconds) + " second" + (seconds == 1 ? "" : "s") + " ago";
    }

    PluginResult YoutubeSubscriptionsPage::lazy_fetch(BodyItems &result_items) {
        Path subscriptions_path = get_storage_dir().join("subscriptions").join("youtube.txt");
        std::string subscriptions_str;
        if(file_get_content(subscriptions_path, subscriptions_str) != 0)
            return PluginResult::OK;

        // TODO: Make a async task pool to handle this more efficiently
        std::vector<std::string> channel_ids;
        string_split(subscriptions_str, '\n', [&channel_ids](const char *str, size_t size) {
            std::string line(str, size);
            line = strip(line);
            if(!line.empty())
                channel_ids.push_back(std::move(line));
            return true;
        });

        std::vector<YoutubeSubscriptionTaskResult> task_results;
        size_t async_task_index = 0;
        const time_t time_now = time(nullptr);

        for(const std::string &channel_id : channel_ids) {
            subscription_load_tasks[async_task_index] = AsyncTask<std::vector<YoutubeSubscriptionTaskResult>>([&channel_id, time_now]() -> std::vector<YoutubeSubscriptionTaskResult> {
                std::string website_data;
                DownloadResult result = download_to_string("https://www.youtube.com/feeds/videos.xml?channel_id=" + url_param_encode(channel_id), website_data, {}, false);
                if(result != DownloadResult::OK) {
                    auto body_item = BodyItem::create("Failed to fetch videos for channel: " + channel_id);
                    return {YoutubeSubscriptionTaskResult{body_item, 0}};
                }

                std::vector<SubscriptionData> subscription_data_list;

                html_parser_parse(website_data.data(), website_data.size(), [](HtmlParser *html_parser, HtmlParseType parse_type, void *userdata) {
                    std::vector<SubscriptionData> &subscription_data_list = *(std::vector<SubscriptionData>*)userdata;

                    if(parse_type == HTML_PARSE_TAG_START && string_view_equals(&html_parser->tag_name, "entry")) {
                        subscription_data_list.push_back({});
                        subscription_data_list.back().inside_entry = true;
                        return;
                    } else if(parse_type == HTML_PARSE_TAG_END && string_view_equals(&html_parser->tag_name, "entry")) {
                        subscription_data_list.back().inside_entry = false;
                        return;
                    }

                    if(subscription_data_list.empty() || !subscription_data_list.back().inside_entry)
                        return;

                    if(string_view_equals(&html_parser->tag_name, "title") && parse_type == HTML_PARSE_TAG_END) {
                        subscription_data_list.back().subscription_entry.title.assign(html_parser->text_stripped.data, html_parser->text_stripped.size);
                    } else if(string_view_equals(&html_parser->tag_name, "yt:videoId") && parse_type == HTML_PARSE_TAG_END) {
                        subscription_data_list.back().subscription_entry.video_id.assign(html_parser->text_stripped.data, html_parser->text_stripped.size);
                    } else if(string_view_equals(&html_parser->tag_name, "published") && parse_type == HTML_PARSE_TAG_END) {
                        std::string published_str(html_parser->text_stripped.data, html_parser->text_stripped.size);

                        int year = 0;
                        int month = 0;
                        int day = 0;
                        int hour = 0;
                        int minute = 0;
                        int second = 0;
                        sscanf(published_str.c_str(), "%d-%d-%dT%d:%d:%d", &year, &month, &day, &hour, &minute, &second);
                        if(year == 0) return;
                        
                        struct tm time;
                        memset(&time, 0, sizeof(time));
                        time.tm_year = year - 1900;
                        time.tm_mon = month - 1;
                        time.tm_mday = day;
                        time.tm_hour = hour;
                        time.tm_min = minute;
                        time.tm_sec = second;

                        subscription_data_list.back().subscription_entry.published = timegm(&time);
                    }
                }, &subscription_data_list);

                std::vector<YoutubeSubscriptionTaskResult> results;
                for(SubscriptionData &subscription_data : subscription_data_list) {
                    if(subscription_data.subscription_entry.title.empty() || subscription_data.subscription_entry.video_id.empty() || subscription_data.subscription_entry.published == 0)
                        continue;

                    html_unescape_sequences(subscription_data.subscription_entry.title);
                    auto body_item = BodyItem::create(std::move(subscription_data.subscription_entry.title));
                    body_item->set_description("Uploaded " + seconds_to_relative_time_str(time_now - subscription_data.subscription_entry.published));
                    body_item->set_description_color(sf::Color(179, 179, 179));
                    body_item->url = "https://www.youtube.com/watch?v=" + subscription_data.subscription_entry.video_id;
                    body_item->thumbnail_url = "https://img.youtube.com/vi/" + subscription_data.subscription_entry.video_id + "/mqdefault.jpg";
                    body_item->thumbnail_size = sf::Vector2i(192, 108);
                    results.push_back({std::move(body_item), subscription_data.subscription_entry.published});
                }
                return results;
            });
            ++async_task_index;
            
            if(async_task_index == subscription_load_tasks.size()) {
                async_task_index = 0;
                for(auto &load_task : subscription_load_tasks) {
                    if(!load_task.valid())
                        continue;

                    auto new_task_results = load_task.get();
                    task_results.insert(task_results.end(), std::move_iterator(new_task_results.begin()), std::move_iterator(new_task_results.end()));
                }
            }
        }

        for(size_t i = 0; i < async_task_index; ++i) {
            auto &load_task = subscription_load_tasks[i];
            if(!load_task.valid())
                continue;

            auto new_task_results = load_task.get();
            task_results.insert(task_results.end(), std::move_iterator(new_task_results.begin()), std::move_iterator(new_task_results.end()));
        }

        std::sort(task_results.begin(), task_results.end(), [](const YoutubeSubscriptionTaskResult &sub_data1, const YoutubeSubscriptionTaskResult &sub_data2) {
            return sub_data1.timestamp > sub_data2.timestamp;
        });

        result_items.reserve(task_results.size());
        for(auto &task_result : task_results) {
            result_items.push_back(std::move(task_result.body_item));
        }

        return PluginResult::OK;
    }

    PluginResult YoutubeRelatedVideosPage::submit(const std::string&, const std::string &url, std::vector<Tab> &result_tabs) {
        result_tabs.push_back(Tab{nullptr, std::make_unique<YoutubeVideoPage>(program, url), nullptr});
        return PluginResult::OK;
    }

    static std::string two_column_watch_next_results_get_comments_continuation_token(const Json::Value &tcwnr_json) {
        const Json::Value &results_json = tcwnr_json["results"];
        if(!results_json.isObject())
            return "";

        const Json::Value &results2_json = results_json["results"];
        if(!results2_json.isObject())
            return "";

        const Json::Value &contents_json = results2_json["contents"];
        if(!contents_json.isArray())
            return "";

        std::string comments_continuation_token;
        for(const Json::Value &content_item_json : contents_json) {
            if(!content_item_json.isObject())
                continue;
            
            comments_continuation_token = item_section_renderer_get_continuation(content_item_json["itemSectionRenderer"]);
            if(!comments_continuation_token.empty())
                return comments_continuation_token;
        }

        return "";
    }

    BodyItems YoutubeVideoPage::get_related_media(const std::string &url, std::string &channel_url) {
        BodyItems result_items;

        std::string modified_url = remove_index_from_playlist_url(url);
        std::vector<CommandArg> additional_args = {
            { "-H", "x-spf-referer: " + url },
            { "-H", "x-youtube-client-name: 1" },
            { "-H", "x-spf-previous: " + url },
            { "-H", "x-youtube-client-version: 2.20200626.03.00" },
            { "-H", "referer: " + url }
        };

        std::vector<CommandArg> cookies = get_cookies();
        additional_args.insert(additional_args.end(), cookies.begin(), cookies.end());

        Json::Value json_root;
        DownloadResult result = download_json(json_root, modified_url + "&pbj=1", std::move(additional_args), true);
        if(result != DownloadResult::OK) return result_items;

        if(!json_root.isArray())
            return result_items;

        std::unordered_set<std::string> added_videos;
        xsrf_token.clear();
        comments_continuation_token.clear();

        for(const Json::Value &json_item : json_root) {
            if(!json_item.isObject())
                continue;

            if(channel_url.empty()) {
                const Json::Value &player_response_json = json_item["playerResponse"];
                if(player_response_json.isObject()) {
                    const Json::Value &video_details_json = player_response_json["videoDetails"];
                    if(video_details_json.isObject()) {
                        const Json::Value &channel_id_json = video_details_json["channelId"];
                        if(channel_id_json.isString())
                            channel_url = "https://www.youtube.com/channel/" + channel_id_json.asString();
                    }
                }
            }

            if(xsrf_token.empty()) {
                const Json::Value &xsrf_token_json = json_item["xsrf_token"];
                if(xsrf_token_json.isString())
                    xsrf_token = xsrf_token_json.asString();
            }

            const Json::Value &response_json = json_item["response"];
            if(!response_json.isObject())
                continue;

            const Json::Value &contents_json = response_json["contents"];
            if(!contents_json.isObject())
                return result_items;

            const Json::Value &tcwnr_json = contents_json["twoColumnWatchNextResults"];
            if(!tcwnr_json.isObject())
                return result_items;

            if(comments_continuation_token.empty())
                comments_continuation_token = two_column_watch_next_results_get_comments_continuation_token(tcwnr_json);

            const Json::Value &secondary_results_json = tcwnr_json["secondaryResults"];
            if(!secondary_results_json.isObject())
                return result_items;

            const Json::Value &secondary_results2_json = secondary_results_json["secondaryResults"];
            if(!secondary_results2_json.isObject())
                return result_items;
            
            const Json::Value &results_json = secondary_results2_json["results"];
            if(!results_json.isArray())
                return result_items;

            for(const Json::Value &item_json : results_json) {
                if(!item_json.isObject())
                    continue;

                auto body_item = parse_compact_video_renderer_json(item_json, added_videos);
                if(body_item)
                    result_items.push_back(std::move(body_item));
                
                const Json::Value &compact_autoplay_renderer_json = item_json["compactAutoplayRenderer"];
                if(!compact_autoplay_renderer_json.isObject())
                    continue;
                
                const Json::Value &item_contents_json = compact_autoplay_renderer_json["contents"];
                if(!item_contents_json.isArray())
                    continue;
                
                for(const Json::Value &content_item_json : item_contents_json) {
                    if(!content_item_json.isObject())
                        continue;
                    
                    auto body_item = parse_compact_video_renderer_json(content_item_json, added_videos);
                    if(body_item)
                        result_items.push_back(std::move(body_item));
                }
            }
        }

        return result_items;
    }

    std::unique_ptr<Page> YoutubeVideoPage::create_search_page(Program *program, int &search_delay) {
        search_delay = 350;
        return std::make_unique<YoutubeSearchPage>(program);
    }

    std::unique_ptr<Page> YoutubeVideoPage::create_comments_page(Program *program) {
        return std::make_unique<YoutubeCommentsPage>(program, xsrf_token, comments_continuation_token);
    }

    std::unique_ptr<RelatedVideosPage> YoutubeVideoPage::create_related_videos_page(Program *program, const std::string&, const std::string&) {
        return std::make_unique<YoutubeRelatedVideosPage>(program);
    }

    std::unique_ptr<Page> YoutubeVideoPage::create_channels_page(Program *program, const std::string &channel_url) {
        return std::make_unique<YoutubeChannelPage>(program, channel_url, "", "Channel videos");
    }
}