(function () {
  'use strict';

  var PLUGIN_ID = 'lampa_qbit_simple';

  function ready(fn) {
    if (window.Lampa && Lampa.Storage) fn();
    else setInterval(function () { if (window.Lampa && Lampa.Storage) { clearInterval(arguments.callee); fn(); } }, 500);
  }

  function storage(name, fallback) {
    var v = Lampa.Storage.field(name);
    return (v === undefined || v === null) ? fallback : v;
  }

  function notify(text) {
    if (Lampa.Noty && Lampa.Noty.show) Lampa.Noty.show(text);
  }

  function requestForm(url, formData, onSuccess, onError) {
    var xhr = new XMLHttpRequest();
    xhr.open('POST', url, true);
    xhr.onreadystatechange = function () {
      if (xhr.readyState !== 4) return;
      if (xhr.status >= 200 && xhr.status < 300) onSuccess(xhr.responseText);
      else onError(new Error('HTTP ' + xhr.status + ': ' + xhr.responseText));
    };
    xhr.send(formData);
  }

  function loginDirect(baseUrl, done, fail) {
    var username = storage('qbit_simple_username', 'admin');
    var password = storage('qbit_simple_password', '');

    if (!username && !password) return done();

    var form = new URLSearchParams();
    form.set('username', username);
    form.set('password', password);

    requestForm(baseUrl + '/api/v2/auth/login', form, function (text) {
      // qBittorrent v5.x: "Ok." или пустой ответ с 204
      var t = String(text).trim();
      if (t === '' || t === 'Ok.' || t === 'True.') done();
      else fail(new Error('qBittorrent auth: ' + t));
    }, fail);
  }

  function download(element) {
    var baseUrl = (storage('qbit_simple_url', 'http://127.0.0.1:8080')).replace(/\/+$/, '');
    var magnet = element.MagnetUri || element.magnet || element.downloadUrl || '';

    if (!magnet) {
      notify('Нет magnet-ссылки');
      return;
    }

    var category = storage('qbit_simple_category', 'lampa');
    var sequential = storage('qbit_simple_sequential', true);
    var firstLast = storage('qbit_simple_first_last', true);

    loginDirect(baseUrl, function () {
      var form = new URLSearchParams();
      form.set('urls', magnet);
      if (category) form.set('category', category);
      if (sequential) form.set('sequentialDownload', 'true');
      if (firstLast) form.set('firstLastPiecePrio', 'true');

      requestForm(baseUrl + '/api/v2/torrents/add', form, function () {
        notify('✓ Отправлено в qBittorrent: ' + (element.Title || element.title || 'torrent'));
      }, function (err) {
        notify('Ошибка: ' + err.message);
      });
    }, function (err) {
      notify('Auth ошибка: ' + err.message);
    });
  }

  function patchSelect() {
    var original = Lampa.Select.show;
    Lampa.Select.show = function (params) {
      if (params && params.items) {
        var modified = false;
        params.items.forEach(function (item) {
          if (item && (item.element && (item.element.MagnetUri || item.element.magnet))) {
            if (!item.__qbit_added) {
              item.__qbit_added = true;
              modified = true;
            }
          }
        });

        // Добавляем пункт "Скачать в qBittorrent" в конец
        var hasMagnet = params.items.some(function (item) {
          return item && item.element && (item.element.MagnetUri || item.element.magnet);
        });

        if (hasMagnet) {
          var origOnSelect = params.onSelect;
          params.onSelect = function (item) {
            if (item && item.__qbit_download) {
              var el = params.items.find(function (i) { return i.element && (i.element.MagnetUri || i.element.magnet); });
              if (el) download(el.element);
              return;
            }
            if (origOnSelect) origOnSelect.apply(this, arguments);
          };
          params.items.push({
            __qbit_download: true,
            name: '⬇ Скачать в qBittorrent',
            icon: 'download'
          });
        }
      }
      return original.call(this, params);
    };
  }

  function setupSettings() {
    Lampa.SettingsApi.addComponent({
      component: 'qbit_simple',
      name: 'qBittorrent',
      icon: '<svg width="24" height="24" viewBox="0 0 24 24" fill="currentColor"><path d="M12 3a9 9 0 1 0 9 9h-2a7 7 0 1 1-7-7V3Zm1 0v8.59l3.3-3.3 1.4 1.42-5.7 5.7-5.7-5.7 1.4-1.42 3.3 3.3V3h2Z"/></svg>'
    });

    var fields = [
      ['qbit_simple_url', 'input', 'Адрес qBittorrent', 'http://127.0.0.1:8080'],
      ['qbit_simple_username', 'input', 'Логин', 'admin'],
      ['qbit_simple_password', 'input', 'Пароль', ''],
      ['qbit_simple_category', 'input', 'Категория', 'lampa'],
      ['qbit_simple_sequential', 'trigger', 'Sequential download', true],
      ['qbit_simple_first_last', 'trigger', 'Первый/последний блок', true]
    ];

    fields.forEach(function (row) {
      Lampa.SettingsApi.addParam({
        component: 'qbit_simple',
        param: {
          name: row[0],
          type: row[1],
          default: row[3]
        },
        field: {
          name: row[2]
        }
      });
    });
  }

  ready(function () {
    setupSettings();
    patchSelect();
    console.log('[qbit-simple] Plugin loaded');
  });

})();