// ==UserScript==
// @name Discord - Custom Background Image
// @namespace http://tampermonkey.net/
// @version 0.7
// @description You can set custom background image of Discord;
// @author You
// @match https://discord.com/channels/*
// @match https://discord.com/channels/*/*
// @icon https://www.google.com/s2/favicons?domain=discord.com
// @grant GM.xmlHttpRequest
// @grant GM.registerMenuCommand
// @grant GM.getValue
// @grant GM.setValue
// @grant GM.addElement
// @connect i.imgur.com
// @license MIT
// ==/UserScript==
(async window => {
'use strict';
let intervalTime = 30 * 1000;
let urls = [
'https://i.imgur.com/cHKbKQT.jpeg',
'https://i.imgur.com/sqmqy20.png',
'https://i.imgur.com/cCL6TPk.jpeg',
'https://i.imgur.com/Z6GYpxh.jpeg',
'https://i.imgur.com/FNJdY5h.jpeg',
'https://i.imgur.com/uKVG1XM.jpeg'
];
let g_elm = null;
const del = () => {
if(g_elm) {
g_elm.remove();
g_elm = null;
return true;
}
else return false;
};
const addInput = async value => {
if(del()) return;
g_elm = await GM.addElement(document.body, 'div', {});
Object.assign(g_elm.style, {
'position': 'fixed',
'width': '100vw',
'height': '100vh',
'display': 'flex',
'flex-wrap': 'wrap',
'justify-content': 'center',
'align-items': 'center',
'z-index': Infinity
});
const input = await GM.addElement(g_elm, 'textarea', {
textContent: value
});
Object.assign(input.style, {
'width': '50vw',
'height': '30vh',
'font-size': '24px',
'font-weight': 'bold'
});
const btnSave = await GM.addElement(g_elm, 'button', {
textContent: 'save'
});
await GM.addElement(g_elm, 'div', {
textContent: ' '
});
const btnCancel = await GM.addElement(g_elm, 'button', {
textContent: 'cancel'
});
for(const v of [btnSave, btnCancel]) Object.assign(v.style, {
'color': 'white',
'backgroundColor': 'red'
});
return new Promise((resolve, reject) => {
btnSave.addEventListener('click', () => del() && resolve(input.value));
btnCancel.addEventListener('click', () => del() && reject());
});
};
const key1 = 'intervalTime';
GM.registerMenuCommand('config interval time', async () => {
const res = await addInput(await GM.getValue(key1, intervalTime));
if(!res) return;
const m = res.match(/[0-9]+/);
if(!m) return;
const n = Number(m[0]);
intervalTime = n;
GM.setValue(key1, n);
});
intervalTime = await GM.getValue(key1, intervalTime);
const key2 = 'URL';
GM.registerMenuCommand('config URL', async () => {
const res = await addInput(await GM.getValue(key2, urls.join('\n')));
if(!res) return;
const a = findURL(res);
if(!a.length) return;
urls = a;
GM.setValue(key2, a.join('\n'));
});
urls = (await GM.getValue(key2, urls.join('\n'))).split('\n');
const findURL = str => {
const m = str.match(/(https?|ftp)(:\/\/[-_.!~*\'()a-zA-Z0-9;\/?:\@&=+\$,%#]+)/g);
return m ? m : [];
};
const memo = new Map;
const get = async url => {
if(memo.has(url)) return memo.get(url);
const res = await GM.xmlHttpRequest({
method: 'GET',
url: url,
withCredentials: true,
responseType: 'arraybuffer',
});
const _url = URL.createObjectURL(new Blob([res.response], {type: 'application/octet-binary'}));
memo.set(url, _url);
return _url;
};
let g_url = await get(urls[0]);
const wait = resolve => {
if(document.querySelector('[class^="chatContent"]')) return resolve();
setTimeout(() => wait(resolve), 500);
};
await new Promise(resolve => wait(resolve));
const setURL = () => {
Object.assign(document.body.children[0].style, {
'background-image': 'url("' + g_url + '")',
'background-attachment': 'fixed',
'background-position': 'center center',
'background-size': 'cover',
'background-repeat': 'no-repeat',
'transition-duration': '1.5s'
});
};
setURL();
const setOther = () => {
for(const v of document.querySelectorAll('*')) v.style.backgroundColor = 'rgba(0, 0, 0, 0)';
document.body.children[0].children[3].style.backgroundColor = 'rgba(0, 0, 0, 0.7)';
};
setOther();
let _url = location.href,
_time = 0,
index = 0;
const update = async () => {
const time = performance.now();
if(time - _time > intervalTime) {
g_url = await get(urls[(++index) % urls.length]);
_time = performance.now();
setURL();
}
else {
const url = location.href;
if(url !== _url) {
_url = url;
setOther();
}
}
requestAnimationFrame(update);
};
update();
})(window.unsafeWindow || window);
