Process Main, drive 10 - Google App Maker. https://cafe.naver.com/eojji/337

Process Main Client.js

function onMainPageAttach(page) {
  google.script.run.withSuccessHandler( function(resp) {
    page.descendants.ToFolderLink.text = resp.title;
    page.descendants.ToFolderLink.href = resp.link;
  }).getLinkToFolderByProperty();
}

/**
 * @param {widget} widget - Button widget.
 * @param {event} 
 */
function onMainInputClick(widget, event) {
  // var widgets = widget.parent.descendants;
  var input = widget.parent.descendants.InputTextBox.value;
  app.popups.ModalLoadingIndicator.visible = true;
  google.script.run.withSuccessHandler( function(resp) {
    var props = app.currentPage.properties;
    props.TitleProperty = resp.title;
    props.UrlProperty = resp.url;
    props.MessageProperty = resp.message;
    app.popups.ModalLoadingIndicator.visible = false;      
  }).processMain(input);
}

/**
 * @param {widget} widget - Button widget.
 * @param {event} 
 */
function onToFolderButtonClick(widget) {
  var toFolder = widget.parent.descendants.ToFolderTextBox.value;
  widget.parent.descendants.ToFolderTextBox.value = '';
  app.popups.ModalLoadingIndicator.visible = true;
  google.script.run.withSuccessHandler( function(resp) {
    var props = app.currentPage.properties;
    props.ToFolderName = resp.title;
    props.ToFolderUrl = resp.url;
    props.MessageProperty = resp.message;
    app.popups.ModalLoadingIndicator.visible = false;      
  }).setToFolderByUrl(toFolder);
}

ProcessMain Server.js

function setFolderPropertyById_(id) {
  PropertiesService.getUserProperties().setProperty('TO_FOLDER_ID', id);
}

function getFolderByProperty_() {
  // return 
  var toFolderId = PropertiesService.getUserProperties().getProperty('TO_FOLDER_ID');
  if (toFolderId) {
    try {
      return getDriveFileById_(toFolderId);
    } catch(e) {
      
    }
  } else {
    var folder = DriveApp.createFolder('_Pick&Copy');
    var id = folder.getId();
    setFolderPropertyById_(id); 
    return Drive.Files.get(id);
  }
}

function getLinkToFolderByProperty() {
  var folder = getFolderByProperty_();
  if (!folder) {
    return;
  }
  return { title:folder.title, link:folder.alternateLink };
}

function setToFolderByUrl(url) {
  var appMessage = {};    
  var pageToFolderUrl = url.trim();
  var decodeUri;
  if (pageToFolderUrl) {
    decodeUri = decodeURIComponent(pageToFolderUrl); 
  } else {
    appMessage.message = 'Enter To folder URL';
    return appMessage;
  }

  var folder = getFolderByGdUrl_(pageToFolderUrl); // return Drive.Files.get(id, optionalArgs);
  if (!folder || !folder.id) {
    var resp = folder;
    if (resp && resp.name) {
      console.log('Error Name: %s, Message: %s, Form Input Url: %s', resp.name, resp.message, pageToFolderUrl);      
      appMessage.message = 'Error Name: '+resp.name+', Message: '+resp.message;
    } else {
      console.log('Error input Url Validate. URL does not have file ID. [%s]', pageToFolderUrl);
      appMessage.message = 'Error ['+pageToFolderUrl+'] Validate.';
    }
    return appMessage;
  }

  var title = folder.title;
  if (folder.mimeType != 'application/vnd.google-apps.folder') {
    appMessage.message = 'To folder URL is file';
    return appMessage;
  } 
  var id = folder.getId();
  setFolderPropertyById_(id); 

  
  appMessage.url = folder.alternateLink;
  appMessage.title = folder.title;
  appMessage.message = 'Save To folder';  
  return appMessage;
}