Google Classroom Dark Mode Theme

A smart toggle-able dark mode theme for Google Classroom.
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// ==UserScript==
// @name         Google Classroom Dark Mode Theme
// @version      1.0.5
// @description  A smart toggle-able dark mode theme for Google Classroom.
// @author       ThaCheeseBun + sudface
// @match        *://classroom.google.com/*
// @grant        none
// @license      MIT; https://mit-license.org/
// @namespace https://greasyfork.org/users/809510
// ==/UserScript==

// Requires Greasemonkey, Tampermonkey, or a similar JS-based userscript manager.

// Original Code by ThaCheeseBun: https://greasyfork.org/en/scripts/395319-google-classroom-dark-mode-theme
// Updated and made Smart by sudface: https://greasyfork.org/en/scripts/431522-google-classroom-dark-mode-theme

// Auto-darkmode is set to enable between 6PM and 6AM.

// Note:
// For your privacy and peace of mind, this script will _not_ auto-update
// Come back to https://greasyfork.org/en/scripts/431522-google-classroom-dark-mode-theme if you want to check for an update

(function() {
    'use strict';

    var style = `
body {
    background: #2c2c2c;
    color: #fff;
}
/* help btn */
.K2mXPb {
    color: #fff;
    fill: #fff;
}
/* links */
a {
    color: dodgerblue;
}
a:visited {
    color: mediumorchid;
}
/* top bar */
.joJglb {
    background: #3c3c3c;
    border-bottom: none;
}
.joJglb, .joJglb.kLHn3 {
    box-shadow: 0px 0px 6px 4px rgba(28, 28, 28, .4);
}
/* google apps */
.gb_qa svg, .gb_C[aria-expanded="true"] .gb_Ve {
    fill: #fff;
}
/* icons */
.IqJTee, .ViCi4, .xSP5ic, .cjq2Db {
    color: #fff;
}
/* classroom elems */
.Aopndd {
    background: #3c3c3c;
    border-color: #5c5c5c;
}
.SZ0kZe {
    border-top: none !important;
}
.apFsO.onkcGd,
.apFsO.onkcGd:visited {
    color: #fff;
}
.oBSRLe {
    color: #fff;
}
.JPdR6b {
    background: #3c3c3c;
    box-shadow: 0px 0px 2px 1px rgba(28, 28, 28, .4);
}
/* nav menu */
.asQXV {
    color: #fff;
}
.dDKhVc, .iLjzDc {
    color: #afafaf;
}
.kCtYwe {
    border-color: #4c4c4c !important;
}
.ETRkCe {
    background-color: #3c3c3c !important;
}
.DShyMc-AaTFfe .Xi8cpb.qs41qe .LlcfK, .bFjUmb-Ysl7Fe, .VUoKZ {
    background-color: #4c4c4c !important;
}
.Xi8cpb:hover .LlcfK {
    background-color: rgba(76, 76, 76, .5) !important;
}
/* calendar */
.Evt7cb, .Evt7cb:visited, .fKz7Od .TpQm9d {
    color: #fff !important;
}
.BOW64 {
    border-color: #5c5c5c !important;
}
.wQuPk .JsqLM.N4XV7d {
    color: #afafaf !important;
}
.ybOdnf .OA0qNb .LMgvRb[aria-selected="true"] {
    background-color: rgba(76, 76, 76, .5) !important;
}
.ncFHed .MocG8c.KKjvXb {
    background-color: #4c4c4c !important;
}
/* todo page */
.Xp0OCe, .ncFHed {
    background-color: #3c3c3c !important;
}
.Xp0OCe {
    border: none !important;
}
.HZ3kWc, .WOPwXe, .gJk24c, .asQXV-FGzYL {
    color: #fff;
}
.MHxtic:not(:last-child), .LKqFXc {
    border-color: #4c4c4c !important;
}
.MHxtic:hover {
    box-shadow: none !important;
    background-color: #4c4c4c;
}
/* class page */
.d4Fe0d {
    background-color: #3c3c3c !important;
    border-color: #4c4c4c !important;
}
.EZrbnd, .A6dC2c, .O98Lj, .rpo4wf, .tLDEHd, .cSyPgb, .wZTANe .J1raN:hover, .udxSmc, .lziZub, .lziZub:visited {
    color: #fff !important;
}
.sdDCme, .K6Ovqd, .T8rTjd, .Lzdwhd-BrZSOd, .onkcGd, .onkcGd:visited, .wZTANe .J1raN {
    color: #ccc;
}
.VnOHwf-Tvm9db, .BEAGS:not(.RDPZE), .VnOHwf-Wvd9Cc, .CJXzee a:active,
.CJXzee a:focus, .CJXzee a:hover, .sdDCme, .K6Ovqd, .vnnr5e .snByac,
.vnnr5e .Aworge, .XpxsVb .Aworge, .UQuaGc, .wCDkmf, .ksaOtd {
    color: #fff !important;
}
.MymH0d:hover .VBEdtc-Wvd9Cc, .l3F1ye:not(.RDPZE), .IMvYId, .IMvYId:visited, .nRLOzd:hover, .nRLOzd:hover *, .O98Lj, .Lzdwhd-BrZSOd {
    color: #ccc !important;
}
.GWZ7yf, .hgjBDc, .vnnr5e .CIy9F, .qk0lee:focus::after {
    background-color: #3c3c3c !important;
    box-shadow: none !important;
}
.vnnr5e .I9OJHe {
    background-color: #3c3c3c !important;
}
.ndcsBf.cjzpkc-Wvd9Cc {
    border-color: #5c5c5c;
}
.Y5FYJe.RDPZE {
    fill: #ccc;
    color: #ccc;
}
.OZ6W0d:not(.RDPZE), .l3F1ye:not(.RDPZE) .TpQm9d, .wwnMtb:not(.RDPZE) {
    fill: #fff !important;
    color: #fff !important;
}
.ZoT1D:hover.idtp4e, .tUJKGd:not(.xp2dJ):not(.rZXyy):hover .idtp4e, .tUJKGd:not(.xp2dJ).ndcsBf .idtp4e, .V8apv, .P3W0Dd-Ysl7Fe:focus {
    background-color: #4c4c4c !important;
}
.Niache, .QTD2uf {
    border-color: #3c3c3c !important;
}
.UISY8d-Ysl7Fe:hover {
    background-color: #3c3c3c !important;
    color: #ccc;
}
.eumXzf:after {
    border-color: #fff !important;
}
.tUJKGd:not(:first-child), .ySjuvd .eqqrO, .s2g3Xd, .oleV8d, .ZNE4y, .PeGHgb.Q8U8uc .Ono85c+.oh9CFb, .O9YpHb, .u73Apc, .d6CWTd {
    border-color: #4c4c4c !important;
}
.lXuxY {
    -webkit-box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.75);
    -moz-box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.75);
    box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.75)
}
.BEAGS, .P02DYb, .ycbm1d {
    border-color: #4c4c4c !important;
}
.Y5sE8d:not(.RDPZE) {
    background-color: hsl(123deg 46% 44%) !important;
}
.Y5sE8d:not(.RDPZE):hover {
    box-shadow: none !important;
}
.ksaOtd {
    color: #1e8e3e;
}
.uO32ac {
    border-color: #5c5c5c !important;
}
.uQ3ESd {
    background-color: #3c3c3c !important;
}
.apFsO.onkcGd, .apFsO.onkcGd:visited {
    color: white !important;
}
.oBSRLe {
    color: white !important;
}
.OjOEXb {
    filter: blur(1px) brightness(0.8);
}
.PFLqgc {
    filter: blur(1px) brightness(0.8);
}
.vzcr8 {
    color: hsl(123deg 46% 59%);
}
/* dialog */
.iph-dialog {
    background-color: #4c4c4c !important;
}
.iph-dialog-title, .iph-dialog-content {
    color: #fff !important;
}
/* join classroom */
.gKkZCe, .D3oBEe .n9IS1:before, .AeAAkf {
    border-color: #4c4c4c;
}
.D3oBEe .qTs5Xc {
    background-color: #3c3c3c;
}
.qTs5Xc, .poFWNe {
    color: #fff;
}
.I7OXgf.ZEeHrd, .NZ9wdc, .i5sehe, .kox42c {
    background-color: #2c2c2c !important;
}`;
    var now = new Date();
    var splitD = new Date();
    splitD.setHours(18,0,0);
    if (now > splitD) {
        var darktime = true;
    } else {
        splitD.setHours(6,0,0);
        if (now < splitD) {
            var darktime = true;
        } else {
            var darktime = false;
        }
    }

    var darkelem = document.createElement('style');
    darkelem.innerText = style;
    darkelem.id = "darkcss"
    if (darktime) {document.head.appendChild(darkelem);}

    function toggledarkmode(){
        var dbutton = document.getElementById("darktoggle");
        if (dbutton.innerText == "🌙") {
            dbutton.innerText = "🌞"; // &#127774;
            document.head.appendChild(darkelem);
        } else {
            dbutton.innerText = "🌙";
            document.getElementById("darkcss").remove();
        }
    }

    var darktoggle = document.createElement('div');
    if (darktime) {darktoggle.innerText = "🌞";} else {darktoggle.innerText = "🌙";}
    darktoggle.id = "darktoggle";
    darktoggle.style = "width: 48px; cursor: pointer; font-size: large;";
    document.getElementsByClassName("Mtd4hb QRiHXd")[0].prepend(darktoggle);
    document.getElementById("darktoggle").addEventListener("click", toggledarkmode);


})();