Hack to duplicate calendar events by holding down the meta (cmd) key and right clicking them in Outlook Web Access

OWAEventDuplicator

// ==UserScript==
// @name         OWAEventDuplicator
// @namespace    http://tampermonkey.net/
// @version      0.3.2
// @description  Duplicate events by holding down the meta key and right clicking them
// @author       @damsleth
// @match        https://outlook.office.com/calendar/view/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=office.com
// @grant        none
// ==/UserScript==

// Last updated 2023-12-18

(function () {
  'use strict'

  let checkDuplicateButtonInterval,
    checkSaveButtonInterval,
    keyDownTime = null,
    isActiveListener = false

  function showToast(message) {
    const toast = document.createElement("div")
    toast.textContent = message
    toast.style.position = "fixed"
    toast.style.top = "135px"
    toast.style.right = "100px"
    toast.style.backgroundColor = "rgba(60, 60, 60, 0.9)"
    toast.style.color = "white"
    toast.style.padding = "10px"
    toast.style.borderRadius = "5px"
    toast.style.zIndex = "1000"
    toast.style.boxShadow = "10px 10px 22px rgba(0, 0, 0, 0.2)"
    toast.style.transition = "all .2s ease-out"
    document.body.appendChild(toast)

    setTimeout(() => {
      toast.style.opacity = '0'
      setTimeout(() => toast.remove(), 600)
    }, 3000)
  }

  function handleMetaDown(e) {
    if (e.key === 'Meta') {
      isActiveListener = true
      keyDownTime = Date.now()
      showToast("Meta key down. Looking for duplicate button.")
      hideSaveModal()
      checkDuplicateButtonInterval = window.setInterval(lookForDuplicateButton, 40)
    }
  }

  function handleMetaUp(e) {
    if (e.key === 'Meta') 
      isActiveListener = false
      keyDownTime = null
      unhideSaveModal()
    
  }

  function lookForDuplicateButton() {
    const duplicateButton = document.querySelector("button[name*='Dup']")
    if (duplicateButton) {
      showToast("Duplicate button found. Duplicating event.")
      clearInterval(checkDuplicateButtonInterval)
      duplicateButton.click()
      checkSaveButtonInterval = window.setInterval(lookForSaveButton, 30)
    } else {
      console.log("Duplicate button not found.")
    }
  }

  function lookForSaveButton() {
    const saveButton = document.querySelector("i[data-icon-name='SaveRegular']").closest("button")
    if (saveButton) {
      showToast("Save button found. Saving event.")
      clearInterval(checkSaveButtonInterval)
      saveButton.click()
    } else {
      console.log("Save button not found.")
    }
  }

  function hideSaveModal() {
    const saveModal = document.getElementById("fluent-default-layer-host")
    if (saveModal) {
      saveModal.style.opacity = 0
    } else {
      console.log("Save modal not found.")
    }
  }

  function unhideSaveModal() {
    const saveModal = document.getElementById("fluent-default-layer-host")
    if (saveModal) {
      saveModal.style.opacity = 1
    } else {
      console.log("Save modal not found.")
    }
  }

  // Fallback mechanism
  setInterval(function () {
    if (isActiveListener && keyDownTime && Date.now() - keyDownTime > 5000) { // 5 seconds as an example
      isActiveListener = false
      keyDownTime = null
      showToast("Fallback: Meta key up assumed.")
      unhideSaveModal()
    }
  }, 120) // Check every 120 ms

  // Global event listeners
  document.addEventListener("keydown", handleMetaDown, { capture: true })
  document.addEventListener("keyup", handleMetaUp, { capture: true })

  showToast("OWA Event Duplicator loaded.")
})()