#include "../../plugins/Spotify.hpp"
#include "../../include/NetUtils.hpp"
#include "../../include/Utils.hpp"
#include "../../include/Scale.hpp"

namespace QuickMedia {
    SpotifyPage::SpotifyPage(Program *program) : Page(program) {
        Path spotify_cache_path = get_cache_dir().join("spotify").join("access_token");
        if(file_get_content(spotify_cache_path, access_token) != 0)
            access_token.clear();
    }

    DownloadResult SpotifyPage::download_json_error_retry(Json::Value &json_root, const std::string &url, std::vector<CommandArg> additional_args) {
        if(access_token.empty()) {
            PluginResult update_token_res = update_token();
            if(update_token_res != PluginResult::OK) return DownloadResult::ERR;
        }

        std::string authorization = "authorization: Bearer " + access_token;
        additional_args.push_back({ "-H", authorization.c_str() });

        std::string err_msg;
        DownloadResult result = download_json(json_root, url, additional_args, true, &err_msg);
        if(result != DownloadResult::OK) return result;

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

        const Json::Value &error_json = json_root["error"];
        if(error_json.isObject()) {
            const Json::Value &status_json = error_json["status"];
            if(status_json.isInt() && status_json.asInt() == 401) {
                fprintf(stderr, "Spotify access token expired, requesting a new token...\n");
                PluginResult update_token_res = update_token();
                if(update_token_res != PluginResult::OK) return DownloadResult::ERR;

                authorization = "authorization: Bearer " + access_token;
                additional_args.back().value = authorization.c_str();
                DownloadResult result = download_json(json_root, url, additional_args, true);
                if(result != DownloadResult::OK) return result;

                if(!json_root.isObject())
                    return DownloadResult::ERR;
            }
        }

        return DownloadResult::OK;
    }

    PluginResult SpotifyPage::update_token() {
        std::string url = "https://open.spotify.com/get_access_token?reason=transport&productType=web_player";

        std::vector<CommandArg> additional_args = {
            { "-H", "authority: application/json" },
            { "-H", "Referer: open.spotify.com" },
            { "-H", "app-platform: WebPlayer" },
            { "-H", "spotify-app-version: 1.1.53.594.g8178ce9b" }
        };

        Json::Value json_root;
        DownloadResult result = download_json(json_root, 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 &access_token_json = json_root["accessToken"];
        if(!access_token_json.isString())
            return PluginResult::ERR;

        access_token = access_token_json.asString();
        Path spotify_cache_dir = get_cache_dir().join("spotify");
        if(create_directory_recursive(spotify_cache_dir) == 0)
            fprintf(stderr, "Failed to create spotify cache directory\n");
        spotify_cache_dir.join("access_token");
        file_overwrite_atomic(spotify_cache_dir, access_token);
        return PluginResult::OK;
    }

    static void image_sources_set_thumbnail(BodyItem *body_item, const Json::Value &sources_list_json) {
        if(!sources_list_json.isArray())
            return;

        for(const Json::Value &source_json : sources_list_json) {
            if(!source_json.isObject())
                continue;

            const Json::Value &width_json = source_json["width"];
            const Json::Value &height_json = source_json["height"];
            const Json::Value &url_json = source_json["url"];
            if(!width_json.isInt() || !height_json.isInt() || !url_json.isString())
                continue;

            if(height_json.asInt() >= 200 && height_json.asInt() <= 350) {
                body_item->thumbnail_url = url_json.asString();
                body_item->thumbnail_mask_type = ThumbnailMaskType::CIRCLE;
                body_item->thumbnail_size.x = width_json.asInt();
                body_item->thumbnail_size.y = height_json.asInt();
                body_item->thumbnail_size = clamp_to_size(body_item->thumbnail_size, sf::Vector2i(150, 150));
                return;
            }
        }
    }

    SearchResult SpotifyPodcastSearchPage::search(const std::string &str, BodyItems &result_items) {
        PluginResult result = get_page(str, 0, result_items);
        if(result != PluginResult::OK)
            return SearchResult::ERR;
        return SearchResult::OK;
    }

    PluginResult SpotifyPodcastSearchPage::get_page(const std::string &str, int page, BodyItems &result_items) {
        std::string url = "https://api.spotify.com/v1/search?query=";
        url += url_param_encode(str);
        url += "&type=show&include_external=audio&market=US&offset=" + std::to_string(page * 10) + "&limit=10";

        std::vector<CommandArg> additional_args = {
            { "-H", "accept: application/json" },
            { "-H", "Referer: https://open.spotify.com/" },
            { "-H", "app-platform: WebPlayer" },
            { "-H", "spotify-app-version: 1.1.53.594.g8178ce9b" }
        };

        Json::Value json_root;
        DownloadResult result = download_json_error_retry(json_root, url, additional_args);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);

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

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

        const Json::Value &items_json = shows_json["items"];
        if(!items_json.isArray())
            return PluginResult::ERR;

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

            const Json::Value &name_json = item_json["name"];
            const Json::Value &uri_json = item_json["uri"];
            if(!name_json.isString() || !uri_json.isString())
                continue;

            auto body_item = BodyItem::create(name_json.asString());
            body_item->url = uri_json.asString();

            const Json::Value &publisher_json = item_json["publisher"];
            if(publisher_json.isString()) {
                body_item->set_description(publisher_json.asString());
                body_item->set_description_color(sf::Color(179, 179, 179));
            }

            image_sources_set_thumbnail(body_item.get(), item_json["images"]);
            result_items.push_back(std::move(body_item));
        }

        return PluginResult::OK;
    }

    PluginResult SpotifyPodcastSearchPage::submit(const std::string &, const std::string &url, std::vector<Tab> &result_tabs) {
        auto body = create_body();
        auto episode_list_page = std::make_unique<SpotifyEpisodeListPage>(program, url);
        PluginResult result = episode_list_page->get_page("", 0, body->items);
        if(result != PluginResult::OK)
            return result;

        result_tabs.push_back(Tab{std::move(body), std::move(episode_list_page), nullptr});
        return result;
    }

    static std::string unix_time_to_local_time_str(time_t unix_time) {
        struct tm time_tm;
        localtime_r(&unix_time, &time_tm);
        char time_str[128] = {0};
        strftime(time_str, sizeof(time_str) - 1, "%Y-%m-%d %H:%M", &time_tm);
        return time_str;
    }

    PluginResult SpotifyEpisodeListPage::get_page(const std::string &, int page, BodyItems &result_items) {
        std::string request_url = "https://api-partner.spotify.com/pathfinder/v1/query?operationName=queryShowEpisodes&variables=";
        request_url += url_param_encode("{\"uri\":\"" + url + "\",\"offset\":" + std::to_string(page * 50) + ",\"limit\":50}");
        request_url += "&extensions=";
        request_url += url_param_encode("{\"persistedQuery\":{\"version\":1,\"sha256Hash\":\"e0e5ce27bd7748d2c59b4d44ba245a8992a05be75d6fabc3b20753fc8857444d\"}}");

        std::vector<CommandArg> additional_args = {
            { "-H", "authority: api-partner.spotify.com" },
            { "-H", "accept: application/json" },
            { "-H", "Referer: https://open.spotify.com/" },
            { "-H", "app-platform: WebPlayer" },
            { "-H", "spotify-app-version: 1.1.54.40.g75ab4382" }
        };

        Json::Value json_root;
        DownloadResult result = download_json_error_retry(json_root, request_url, additional_args);
        if(result != DownloadResult::OK) return download_result_to_plugin_result(result);

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

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

        const Json::Value &podcast_json = data_json["podcast"];
        if(!podcast_json.isObject())
            return PluginResult::ERR;

        const Json::Value &episodes_json = podcast_json["episodes"];
        if(!episodes_json.isObject())
            return PluginResult::ERR;

        const Json::Value &episode_items_json = episodes_json["items"];
        if(!episode_items_json.isArray())
            return PluginResult::ERR;

        for(const Json::Value &episode_item_json : episode_items_json) {
            if(!episode_item_json.isObject())
                continue;

            const Json::Value &episode_json = episode_item_json["episode"];
            if(!episode_json.isObject())
                continue;

            const Json::Value &name_json = episode_json["name"];
            if(!name_json.isString())
                continue;

            const Json::Value &sharing_info_json = episode_json["sharingInfo"];
            if(!sharing_info_json.isObject())
                continue;

            const Json::Value &share_url_json = sharing_info_json["shareUrl"];
            if(!share_url_json.isString())
                continue;

            auto body_item = BodyItem::create(name_json.asString());
            body_item->url = share_url_json.asString();

            std::string description;
            std::string time;

            const Json::Value &description_json = episode_json["description"];
            if(description_json.isString())
                description += description_json.asString();

            const Json::Value &release_data_json = episode_json["releaseDate"];
            if(release_data_json.isObject()) {
                const Json::Value &iso_string_json = release_data_json["isoString"];
                if(iso_string_json.isString())
                    time += unix_time_to_local_time_str(iso_utc_to_unix_time(iso_string_json.asCString()));
            }

            const Json::Value &duration_json = episode_json["duration"];
            if(duration_json.isObject()) {
                const Json::Value &total_ms_json = duration_json["totalMilliseconds"];
                if(total_ms_json.isInt()) {
                    if(!time.empty())
                        time += " • ";
                    time += std::to_string(total_ms_json.asInt() / 1000 / 60) + " min";
                }
            }

            if(!time.empty()) {
                if(!description.empty())
                    description += '\n';
                description += std::move(time);
            }

            body_item->set_description(std::move(description));
            body_item->set_description_color(sf::Color(179, 179, 179));

            const Json::Value &cover_art_json = episode_json["coverArt"];
            if(cover_art_json.isObject())
                image_sources_set_thumbnail(body_item.get(), cover_art_json["sources"]);

            result_items.push_back(std::move(body_item));
        }

        return PluginResult::OK;
    }

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