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floodmeadows / Google Drive copy image filenames

// ==UserScript==
// @name         Google Drive copy image filenames
// @namespace    https://openuserjs.org/users/floodmeadows
// @description  Copies the list of image filenames from a Google Drive folder view to the clipboard
// @copyright    2023, floodmeadows (https://openuserjs.org/users/floodmeadows)
// @license      MIT
// @version      0.1.6
// @author       andy@floodmeadows.com
// @match        https://drive.google.com/drive*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=google.com
// @updateURL    https://openuserjs.org/meta/floodmeadows/Google_Drive_copy_image_filenames.meta.js
// @downloadURL  https://openuserjs.org/src/scripts/floodmeadows/Google_Drive_copy_image_filenames.user.js
// @grant        none

// ==/UserScript==

/* jshint esversion: 8 */


const inputListSelector = 'div.KL4NAf';
const correctPrefix = 'cym_';

(function() {
    'use strict';
    addButton();
})();

function addButton() {
  const newElement = document.createElement("button");
  newElement.setAttribute("style", "position:absolute; top:22px; right:370px;");
  newElement.addEventListener("click", copyListOfFilenames);
  const text = document.createTextNode("Copy image filenames");
  newElement.appendChild(text);
  const target = document.querySelector("#gb").children[1].children[1].children[1];
    target.appendChild(newElement);
}

function copyListOfFilenames() {
    console.log("copyListOfFilenames called.");
    console.log("inputListSelector = " + inputListSelector);
    var inputList = document.querySelectorAll(inputListSelector);
    console.log("inputList = " + inputList);
    console.log("inputList length = " + inputList.length);
    var arrFilenames = [];
    for(var i = 0; i < inputList.length; i++) {
        var filename = inputList[i].innerHTML;
        console.log(filename);
        if(!filenameStartsWithCorrectPrefix(filename)) { continue; }
        if(isImageFile(filename)) {
            filename = removePrefix(filename);
            arrFilenames.push(filename);
        }
    }
    var txtFilenames = arrFilenames.sort().join("\r\n");
    console.log(txtFilenames);
    addTextToClipboard(txtFilenames);
}

function filenameStartsWithCorrectPrefix(filename) {
    console.log(filename.substring(0,correctPrefix.length));
    if(filename.substring(0,correctPrefix.length) == correctPrefix) {
        console.log("filename " + filename + " has correct prefix.");
        return true;
    } else {
        console.log("filename " + filename + " does not have correct prefix.");
        return false;
    }
}

function isImageFile(filename) {
    if(
        (filename.substring(filename.length-4,filename.length) == '.png') ||
        (filename.substring(filename.length-4,filename.length) == '.jpg') ||
        (filename.substring(filename.length-5,filename.length) == '.jpeg')) {
        console.log("filename " + filename + " is an image.");
        return true;
    } else {
        console.log("filename " + filename + " is not an image.");
        return false;
    }
}

function removePrefix(filename) {
    console.log("Removing prefix... ");
    var filenameWithoutPrefix = filename.substring(correctPrefix.length,filename.length);
    console.log("Filename is now " + filenameWithoutPrefix);
    return filenameWithoutPrefix;
}

async function addTextToClipboard(text) {
    console.log("Adding text to clipboard...");
  try {
    await navigator.clipboard.writeText(text);
    console.log('Content added to clipboard');
  } catch (err) {
    console.error('Failed to add text to clipboard with error: ', err);
  }
}