MastoThrottle

masto-throttle.user.js

// ==UserScript==
// @name         MastoThrottle
// @namespace    http://tampermonkey.net/
// @version      1
// @description  Stops you from wasting unhealthy amounts of time on Mastodon
// @author       @[email protected]
// @match        https://dev.glitch.social/web/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const OPEN_TIME_MIN = 5
    const LOCKED_TIME_MIN = 30

    let time = () => Math.round(+new Date()/1000)

    const now = time()
    let locked = false

    let t_opened = localStorage.getItem("mt_opentime")
    if (t_opened === null) {
        t_opened = time()
        localStorage.setItem("mt_opentime", t_opened)
    } else {
        t_opened = +t_opened
    }
    let t_close = t_opened + OPEN_TIME_MIN*60

    locked = (now > t_close)

    let isUnlockAllowed = () => {
        return time() >= t_close + LOCKED_TIME_MIN*60
    }

    /* build the overlay */
    let overlay;
    {
        overlay = document.createElement('DIV')
        overlay.style.display = 'none'
        overlay.style.fontSize = '48pt'
        overlay.style.background = 'white'
        overlay.style.position = 'absolute'
        overlay.style.left = '0'
        overlay.style.top = '0'
        overlay.style.right = '0'
        overlay.style.bottom = '0'
        overlay.style.zIndex = '999'
        overlay.style.color = '#4AA5FF'
        overlay.textContent = '429 Throttled'
        let masto = document.getElementById('mastodon')
        masto.appendChild(overlay)
    }

    let doUnlock = () => {
        console.log("[MastoThrottle] Unlocked")
        t_close = now + OPEN_TIME_MIN*60
        t_opened = now;
        localStorage.setItem("mt_opentime", t_opened)
        overlay.style.display = 'none'
        locked = false
    }

    let doLock = () => {
        console.log("[MastoThrottle] Opening overlay")
        locked = true
        updateLockedText()
        overlay.style.display = 'flex'
    }

    let updateLockedText = () => {
        if (isUnlockAllowed()) {
            overlay.textContent = 'Click here to begin'
            overlay.style.cursor = 'pointer'
        } else {
            let remain = t_close+LOCKED_TIME_MIN*60 - time()

            let t = `${remain} s`
            if (remain > 60) {
                t = `${Math.floor(remain/60)}:${(''+(remain%60)).padStart(2, '0')}`
            }

            overlay.textContent = `429 Throttled | ${t}`
            overlay.style.cursor = 'default'
        }
    }

    overlay.addEventListener('click', () => {
        if (isUnlockAllowed()) {
            doUnlock();
        }
    })

    console.log(`[MastoThrottle] Started, open time ${OPEN_TIME_MIN} min, lock time ${LOCKED_TIME_MIN} min`)
    console.log(`[MastoThrottle] Last open ${Math.round((now-t_opened)/6)/10} min ago`)

    // Apply the initial lock
    if (locked) doLock()

    // Uncomment this to auto unlock if timeout is expired
    /*
    if (isUnlockAllowed()) {
        doUnlock();
    }
    */

    setInterval(function() {
        if (locked) {
            updateLockedText()
        }
        if (!locked && time() >= t_close) {
            doLock()
        }
    }, 1000)
})();