//META{"name":"OCR"}*//
class OCR {
  get local() {
    return {
      startMessage: "${pluginName} ${version} has started.",
      description: 'Optical character recognition. (Image to text)',
      reset: "Reset settings",
      settings: {
        panel: 'Settings panel',
        labels: {
          apikey: 'Apikey'
        },
        help: {},
        protip: {
          label: 'Protip:',
          tip: 'Register for an apikey here. (500 calls/day) https://ocr.space/ocrapi'
        }
      }
    };
  }
  getAuthor() {
    return "Arhippa"
  }
  getName() {
    return "OCR"
  }
  getDescription() {
    return this.local.description
  }
  getVersion() {
    return "0.2"
  }
  start() {
    if (!document.getElementById(`${this.getName()}-style`)) BdApi.injectCSS(`${this.getName()}-style`, this.css.thumb);
    let libraryScript = document.getElementById('ZLibraryScript');
    if (typeof window.ZLibrary !== "undefined") this.initialize();
    else libraryScript.addEventListener('load', () => this.initialize());
  }
  initialize() {
    if (settingsCookie['fork-ps-2'] === false) ZLibrary.Toasts.show(ZLibrary.Utilities.formatTString(this.local.startMessage, {
      pluginName: this.getName(),
      version: this.getVersion()
    }));
    this.initialized = true;
    this.loadSettings();
    this.injectThumbIcons();
  }
  stop() {
    if (document.getElementById(`${this.getName()}-style`)) BdApi.clearCSS(`${this.getName()}-style`);
    this.RemoveThumbIcons();
    this.initialized = false;
  }
  load() {
    let libraryScript = document.getElementById('ZLibraryScript');
    if (!ZLibrary && !libraryScript) {
      libraryScript = document.createElement('script');
      libraryScript.setAttribute('type', 'text/javascript');
      libraryScript.addEventListener("error", function() {
        if (typeof ZLibrary === "undefined") {
          window.BdApi.alert("Library Missing", `The library plugin needed for ${this.getName()} is missing and could not be loaded.<br /><br /><a href="https://betterdiscord.net/ghdl?url=https://raw.githubusercontent.com/rauenzi/BDPluginLibrary/master/release/0PluginLibrary.plugin.js" target="_blank">Click here to download the library!</a>`);
        }
      }.bind(this));
      libraryScript.setAttribute('src', 'https://rauenzi.github.io/BDPluginLibrary/release/ZLibrary.js');
      libraryScript.setAttribute('id', 'ZLibraryScript');
      document.head.appendChild(libraryScript);
    }
  }
  unload() {}
  injectThumbIcons() {
    var fs = require('fs');
    let list = document.querySelectorAll("img");
    for (let i = 0; i < list.length; i++) {
      let elem = list[i].parentElement;
      if (!elem.href ||
        !elem.classList.contains('imageWrapper-2p5ogY') ||
        elem.querySelector('.thumbOCR')
      ) continue;
      let div = document.createElement('div');
      div.innerHTML = "OCR";
      div.className = "thumbOCR";
      this.loadSettings();
      div.onclick = (e) => {
        e.stopPropagation();
        e.preventDefault();
        this.doOCR(e);
      };
      elem.insertAdjacentElement('afterbegin', div);
    }
    this.injectionTimeout = setTimeout(this.injectThumbIcons.bind(this), 2000);
  }
  RemoveThumbIcons() {
    clearTimeout(this.injectionTimeout);
    $('div.thumbOCR').each(function(i, obj) {
      $(this).remove();
    });
  }
  saveSettings() {
    ZLibrary.PluginUtilities.saveSettings(this.getName(), this.settings);
  }
  loadSettings() {
    this.settings = ZLibrary.PluginUtilities.loadSettings(this.getName(), this.defaultSettings);
  }
  getSettingsPanel() {
    let panel = $("<form>").addClass("form").css("width", "100%");
    if (this.initialized) this.generateSettings(panel);
    return panel[0];
  }
  generateSettings(panel) {
    new ZLibrary.Settings.SettingGroup(this.local.settings.panel, {
      callback: this.loadSettings(),
      collapsible: false,
      shown: true
    }).appendTo(panel).append(
      new ZLibrary.Settings.Textbox(this.local.settings.labels.apikey, '', this.settings.apikey, text => {
        this.settings.apikey = text;
        this.saveSettings();
      }));
    panel.append(
      $(`<div class='protip-12obwm inline-136HKr'>
                <div class='pro-1T8RK7 small-29zrCQ size12-3R0845 height16-2Lv3qA statusGreen-pvYWjA weightBold-2yjlgw'>${this.local.settings.protip.label}</div>
                <div class='tip-2ab612 primary-jw0I4K'>${this.local.settings.protip.tip}</div>
            </div>`),
      $(`<button type="button" class="button-38aScr lookOutlined-3sRXeN colorRed-1TFJan sizeMedium-1AC_Sl grow-q77ONN" style='margin: 10px 0; float: right;'><div class="contents-18-Yxp">${this.local.reset}</div></button>`)
      .click(() => {
        this.settings = this.defaultSettings;
        this.saveSettings();
        panel.empty();
        this.generateSettings(panel);
      })
    );
  }
  doOCR(e) {
    var button = e.srcElement;
    var url = button.parentElement.href;
    if (url.endsWith('.html') && button.parentElement.getElementsByTagName('img')[0] && button.parentElement.getElementsByTagName('img')[0].src.startsWith('https://images-ext-2.discordapp.net')) {
      url = button.parentElement.getElementsByTagName('img')[0].src;
      url = url.substring(url.indexOf('/https'), url.indexOf('?') || url.length).substring(1).replace('https/', 'https://');
    }
    if (!url) {
      button.innerHTML = "Error";
      return;
    }
    button.innerHTML = "OCR'ing...";
    var name = url.split('/')[6];
    var xhr = new XMLHttpRequest(),
      method = "GET",
      url = 'https://api.ocr.space/parse/imageurl?apikey=' + this.settings.apikey + '&url=' + url;
    xhr.open(method, url, true);
    xhr.onreadystatechange = (e) => {
      if (xhr.readyState != 4) return;
      var jsonResponse = JSON.parse(xhr.responseText);
      try {
        var result = jsonResponse['ParsedResults'][0]['ParsedText']
        button.innerHTML = "OCR'd!";
        var x = document.getElementsByClassName("textArea-2Spzkt da-textArea textArea-2Spzkt da-textArea scrollbarGhostHairline-1mSOM1 scrollbar-3dvm_9 da-scrollbarGhostHairline da-scrollbar")[0];
        x.focus();
        document.execCommand("insertText", false, result.substring(0, result.length - 1));
        var length = result.length
        x.setSelectionRange(length, length);
      } catch (typeerror) {
        BDFDB.showToast(`Error during OCR!`)
        button.innerHTML = "Error!";
      }
    }
    xhr.send();
  }
  get defaultSettings() {
    return {
      apikey: 4c1e1876b488957
    };
  }
  get css() {
    return {
      thumb: `
                .thumbOCR {
                    z-index: 9000!important;
                    background-color: rgba(51, 51, 51, .9);
                    position: absolute;
                    display: block;
                    padding: 3px 9px;
                    margin: 5px;
                    border-radius: 3px;
                    font-family: inherit;
                    color: #FFF;
                    font-weight: 500;
                    font-size: 16px;
                    opacity: 0;
                }
                .messageGroupCozy-1BZuO8:hover .thumbOCR,
                .imageWrapper-2p5ogY:hover .thumbOCR {
                    opacity: 0.9;
                }
                .thumbOCR:hover {
                    opacity: 1 !important;
                }`
    };
  }
}