Sets a timer for Google Meet with chat messages.

google-meet-timer.console.js

;(function () {
    let textarea = document.querySelector('textarea[aria-label="Send a message"]')
    let submit = document.querySelector('[role="button"][aria-label="Send a message"]')

    if (!textarea || !submit) return alert('Uh oh! Something went wrong. Do you have the chat panel open?')

    function sendMessage(text) {
        textarea.click()
        textarea.value = text
        submit.removeAttribute('aria-disabled')
        submit.removeAttribute('disabled')
        submit.click()
    }

    function setTimer(minutes) {
        let readableMinutes = `${minutes} minute${minutes !== 1 ? 's' : ''}`

        sendMessage(`⏳ Timer set for ${readableMinutes}`)

        window.googleMeetTimer = setTimeout(() => {
            sendMessage(`🔔 Time is up (${readableMinutes})`)
        }, minutes * 60 * 1000)

        if (minutes >= 2) {
            window.googleMeetWarningTimer = setTimeout(() => {
                sendMessage(`⌛️ One minute left`)
            }, (minutes - 1) * 60 * 1000)
        }

        window.addEventListener('keydown', function (event) {
            if (event.key === 'Backspace' && event.ctrlKey && event.shiftKey) {
                cancelTimer()
            }
        })
    }

    function cancelTimer() {
        sendMessage(`🗑 Timer cancelled`)
        clearTimeout(window.googleMeetTimer)
        clearTimeout(window.googleMeetWarningTimer)
    }

    let container = document.querySelector('[role="heading"][aria-level="1"]')
    
    let timerContainer = document.createElement('div')

    let button = document.createElement('button')
    button.textContent = 'Set Timer'

    let input = document.createElement('input')
    input.type = 'number'
    input.value = 5
    input.style = "width: 50px"

    timerContainer.appendChild(input)
    timerContainer.appendChild(button)
    container.appendChild(timerContainer)

    button.addEventListener('click', () => {
        setTimer(input.value)

        let cancelButton = document.createElement('button')
        cancelButton.textContent = 'Cancel Timer'

        cancelButton.addEventListener('click', () => {
            cancelTimer()
            cancelButton.remove()
        })

        timerContainer.appendChild(cancelButton)
    })
})()