The code imports necessary modules and defines a copyMarketing function to copy a Google Drive file named "Marketing site" and grant permissions to a specified email address. The function executes a sequential workflow of listing Google Drive files, copying the file, inserting permissions, and retrieving a sheet identifier (although the latter's purpose is unclear).

Run example

npm run import -- "create a sheet handler"

create a sheet handler

var uuid = require('uuid/v1');
var importer = require('../Core');
var getSheet = importer.import("get sheet identifier");
var copyFile = importer.import("copy a file on google drive");
var listDrive = importer.import("list google drive files");
var insertPermission = importer.import("insert google drive permissions");

function copyMarketing(email) {
    var fileId;
    return listDrive()
        .then(r => fileId = r.filter(f => f.name === 'Marketing site')[0].id)
        .then(() => copyFile(fileId, 'Marketing site ' + uuid().substr(0, 5)))
        .then(id => insertPermission(id, email))
        .then(() => getSheet(fileId, email))
        .then(() => fileId)
}

module.exports = copyMarketing;

const { v4: uuid } = require('uuid');
const { importFunctions } = require('../Core');
const {
  getSheetIdentifier,
  copyFileOnGoogleDrive,
  listGoogleDriveFiles,
  insertGoogleDrivePermissions,
} = importFunctions();

/**
 * Copies the 'Marketing site' file on Google Drive, inserts a permission, and returns the file ID.
 * 
 * @param {string} email - The email address to grant permission to.
 * @returns {Promise<string>} The ID of the copied file.
 */
function copyMarketing(email) {
  // TODO: Handle error cases where the 'Marketing site' file does not exist.
  return listGoogleDriveFiles()
   .then((files) => {
      const marketingFile = files.find((file) => file.name === 'Marketing site');
      return marketingFile? marketingFile.id : null;
    })
   .then((fileId) => {
      if (!fileId) {
        throw new Error("File 'Marketing site' not found.");
      }
      return copyFileOnGoogleDrive(fileId, `Marketing site ${uuid().substr(0, 5)}`);
    })
   .then((id) => insertGoogleDrivePermissions(id, email))
   .then(() => getSheetIdentifier(id, email))
   .then(() => id);
}

module.exports = copyMarketing;

Code Breakdown

Importing Modules

The code starts by importing several modules:

• uuid/v1 to generate a unique identifier.
• importer from a ../Core module, which is used to import other modules.
• Four specific functions from the importer module:
  • getSheet: retrieves a sheet identifier.
  • copyFile: copies a file on Google Drive.
  • listDrive: lists Google Drive files.
  • insertPermission: inserts permissions for a Google Drive file.

Defining copyMarketing Function

The copyMarketing function is defined, which appears to be a workflow for copying a Google Drive file and granting permissions to an email address.

Function Parameters

The function takes one parameter email, which is used to grant permissions for the copied file.

Function Flow

The function returns a promise that sequentially executes the following steps:

1. listDrive() lists Google Drive files and stores the ID of a file named "Marketing site" in the fileId variable.
2. copyFile(fileId, 'Marketing site'+ uuid().substr(0, 5)) copies the file with the ID stored in fileId, generates a new name with a unique identifier, and stores the new file ID.
3. insertPermission(id, email) inserts permissions for the new file ID and grants access to the email address.
4. getSheet(fileId, email) retrieves a sheet identifier for the new file ID and email address (though the purpose of this step is unclear).
5. fileId is returned as a promise resolution.

Exporting copyMarketing Function

The copyMarketing function is exported as a module.

Note: The purpose of the getSheet function in step 4 is unclear, as it is not used in the rest of the code.