⚡ refact and moves ~/bin to ~/.local/bin

.local/bin/§wallpaper_BIOTD.mjs

@@ -0,0 +1,44 @@
+#!/usr/bin/env node
+/* jshint esversion: 6,-W097, -W040, browser: true, expr: true, undef: true */
+import { readFileSync, writeFileSync, createWriteStream } from "fs";
+import { get } from "https";
+import { homedir } from "os";
+
+const url_main= "https://www.bing.com";
+const folder= homedir()+"/Obrázky/Bing Image Of The Day/";
+
+get_(url_main+"/HPImageArchive.aspx?format=js&idx=0&n=2&mkt=cs-CZ")
+.then(res=> {
+	let body= "";
+	res.on("data", chunk=> body+= chunk);
+	res.on("end", ()=> pipe(data, update)(body));
+})
+.catch(e=> console.error(String(e)));
+
+function update(data){
+	if(data===null) return false;
+	Promise.allSettled(data.map(({ url, copyright }, id)=> getImage_(url, id ? "prev" : "now", copyright)))
+	.then(res=> {
+		let template= readFileSync(folder+"index_template.html").toString();
+		writeFileSync(folder+"index.html", res.reduce((out, { status, value })=> status==="rejected" ? out : out.replace(`::${value.name}::`, value.description), template));
+	})
+	.catch(e=> console.error(String(e)));
+}
+function getImage_(url, name, desc){
+	const description= desc.replace("(©", "<br>(©");
+	return get_(url_main+url)
+	.then(res=> {
+		const fs= createWriteStream(folder+name+'.jpg');
+		res.pipe(fs);
+		return new Promise(res=> fs.on("finish", ()=> {
+			fs.close();
+			res({ name, description });
+		}));
+	});
+}
+function data(body){
+		  try	{ return JSON.parse(body).images; }
+	catch (_)	{ return null; }
+}
+function get_(url){ return new Promise(function(res,rej){ get(url, res).on("error", rej); }); }
+function pipe(...f){ return Array.prototype.reduce.bind(f, (acc, f)=> f(acc)); }