Allows you to use the keyboard shorcuts in the comments to manipulate hiding/showing the calendar and going to its today view as well as starting/stopping pomodone if you use it

Some Trello Keyboard Shortcuts

// ==UserScript==
// @name         Some Trello Keyboard Shortcuts
// @namespace    https://cody.codes
// @version      0.1
// @description  Allows you to use the keyboard shorcuts in the comments to manipulate hiding/showing the calendar and going to its today view as well as starting/stopping pomodone if you use it
// @author       You
// @match        https://trello.com/b/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    var lastCalendarView = 'week';
    function F_handleKeyDown(event)
    {

        let calendarDisplaying = document.getElementsByClassName('calendar-header-toolbar').length > 0;
        let cardDisplaying = document.getElementsByClassName('js-close-window').length > 0;
        let composeCardDisplaying = document.getElementsByClassName('js-add-card').length > 0;
        let isEditing = document.getElementsByClassName('editing').length > 0 || document.getElementsByClassName('is-focused').length > 0 || document.getElementsByClassName('is-editing').length > 0;
        let inputActive = false;
        let inputElements = document.getElementsByTagName('input');
        // check if the active element is an input
        for (let i = 0; i < inputElements.length; i++ ) {
            if (inputElements[i] === document.activeElement) {
                inputActive = true;
            }
        }
        if (!inputActive && !isEditing) {
            switch(event.keyCode) {
                case 192: // ` -> open calendar and cycle through month or week
                    if (!composeCardDisplaying && calendarDisplaying) {
                        if (lastCalendarView == 'week') {
                            lastCalendarView = 'month'
                        } else {
                            lastCalendarView = 'week';
                        }
                        document.getElementsByClassName(`${lastCalendarView}-button`)[0].click();
                    } else if (!cardDisplaying && !composeCardDisplaying){
                        document.getElementsByClassName('icon-calendar')[0].click();
                    }
                    break;
                case 84: // t -> switch to today on calendar
                    if (!cardDisplaying && !composeCardDisplaying && calendarDisplaying) {
                         document.getElementsByClassName('js-today')[0].click();
                    }
                    break;
                case 27: // esc -> close calendar
                   if (!composeCardDisplaying && calendarDisplaying) {
                   // calendar view
                         document.getElementsByClassName('js-close-calendar')[0].click();
                    }
                    break;
                case 80: // p -> start pomodone
                    if (cardDisplaying) {
                         document.getElementsByClassName('pd_timer_button__body_title')[0].click();
                    }
                    break;
                case 186: // ; -> toggle due date complete
                    if (cardDisplaying) {
                        document.getElementsByClassName('js-details-toggle-due-date-complete')[0].click();
                    }
                    break;
                default:
                    break;
            }
        }
    }
    window.addEventListener( 'keydown', F_handleKeyDown, false );
})();