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