#include "../../plugins/MangaCombined.hpp"
#include "../../include/AsyncTask.hpp"

namespace QuickMedia {
    static const int SEARCH_TIMEOUT_MILLISECONDS = 6000;

    MangaCombinedSearchPage::MangaCombinedSearchPage(Program *program, std::vector<MangaPlugin> search_pages) :
        Page(program), search_pages(std::move(search_pages))
    {
        
    }

    static void result_items_add_thread_results(std::vector<std::pair<MangaPlugin*, AsyncTask<BodyItems>>> &search_threads, BodyItems &result_items) {
        std::vector<std::pair<MangaPlugin*, bool>> plugin_finished_state(search_threads.size());
        for(size_t i = 0; i < plugin_finished_state.size(); ++i) {
            plugin_finished_state[i].first = search_threads[i].first;
        }

        int accumulated_sleep_time = 0;
        while(true) {
            size_t finshed_plugin_index = 0;
            for(auto &f : plugin_finished_state) {
                f.second = false;
            }

            for(auto &search_thread : search_threads) {
                if(!search_thread.second.valid()) {
                    plugin_finished_state[finshed_plugin_index].second = true;
                    ++finshed_plugin_index;
                    continue;
                }

                if(!search_thread.second.ready())
                    continue;

                BodyItems search_page_body_items = search_thread.second.get();
                plugin_finished_state[finshed_plugin_index].second = true;
                ++finshed_plugin_index;
                if(search_page_body_items.empty())
                    continue;

                auto title_item = BodyItem::create("");
                title_item->set_author("------------------------ " + search_thread.first->title + " ------------------------");
                result_items.push_back(std::move(title_item));

                for(auto &new_body_item : search_page_body_items) {
                    new_body_item->userdata = search_thread.first->page.get();
                }
                result_items.insert(result_items.end(), std::move_iterator(search_page_body_items.begin()), std::move_iterator(search_page_body_items.end()));
            }

            size_t num_finished_plugins = 0;
            for(auto &f : plugin_finished_state) {
                if(f.second)
                    ++num_finished_plugins;
            }

            if(num_finished_plugins == search_threads.size())
                break;

            int sleep_time_ms = 200;
            std::this_thread::sleep_for(std::chrono::milliseconds(sleep_time_ms));
            accumulated_sleep_time += sleep_time_ms;
            if(accumulated_sleep_time >= SEARCH_TIMEOUT_MILLISECONDS) {
                for(auto &f : plugin_finished_state) {
                    if(!f.second) {
                        auto title_item = BodyItem::create("");
                        title_item->set_author("------------------------ " + f.first->title + " timed out ------------------------");
                        result_items.push_back(std::move(title_item));
                    }
                }
                break;
            }
        }
    }

    SearchResult MangaCombinedSearchPage::search(const std::string &str, BodyItems &result_items) {
        std::vector<std::pair<MangaPlugin*, AsyncTask<BodyItems>>> search_threads;
        for(auto &search_page : search_pages) {
            search_threads.push_back(std::make_pair(&search_page, AsyncTask<BodyItems>([&str, &search_page]() {
                BodyItems search_page_body_items;
                search_page.page->search(str, search_page_body_items);
                return search_page_body_items;
            })));
        }

        result_items_add_thread_results(search_threads, result_items);
        return SearchResult::OK;
    }

    PluginResult MangaCombinedSearchPage::get_page(const std::string &str, int page, BodyItems &result_items) {
        std::vector<std::pair<MangaPlugin*, AsyncTask<BodyItems>>> search_threads;
        for(auto &search_page : search_pages) {
            search_threads.push_back(std::make_pair(&search_page, AsyncTask<BodyItems>([&str, page, &search_page]() {
                BodyItems search_page_body_items;
                search_page.page->get_page(str, page, search_page_body_items);
                return search_page_body_items;
            })));
        }

        result_items_add_thread_results(search_threads, result_items);
        return PluginResult::OK;
    }

    PluginResult MangaCombinedSearchPage::submit(const std::string &title, const std::string &url, std::vector<Tab> &result_tabs) {
        Page *page = (Page*)submit_body_item->userdata;
        if(!page) return PluginResult::OK;
        return page->submit(title, url, result_tabs);
    }
}