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libraryServer.js
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import fs from 'fs';
import path from 'path';
import express from 'express';
import args from './args.js';
import {say, sleep} from './common.js';
import Archivist from './archivist.js';
const SITE_PATH = path.resolve(__dirname, 'public');
const app = express();
const INDEX_FILE = args.index_file;
let Server, upAt, port;
const LibraryServer = {
start, stop
}
export default LibraryServer;
async function start({server_port}) {
port = server_port;
addHandlers();
Server = app.listen(Number(port), err => {
if ( err ) {
throw err;
}
upAt = new Date;
say({server_up:{upAt,port}});
});
}
function addHandlers() {
const {chrome_port} = args;
app.use(express.urlencoded({extended:true}));
app.use(express.static(SITE_PATH));
if ( !! args.library_path() ) {
app.use("/library", express.static(args.library_path()))
}
app.get('/search', async (req, res) => {
res.end('Not implemented yet');
});
app.get('/mode', async (req, res) => {
res.end(Archivist.getMode());
});
app.get('/archive_index.html', async (req, res) => {
const index = JSON.parse(fs.readFileSync(INDEX_FILE()));
res.end(IndexView(index));
});
app.post('/mode', async (req, res) => {
const {mode} = req.body;
await Archivist.changeMode(mode);
res.end(`Mode set to ${mode}`);
});
app.get('/base_path', async (req, res) => {
res.end(args.getBasePath());
});
app.post('/base_path', async (req, res) => {
const {base_path} = req.body;
const change = args.updateBasePath(base_path);
if ( change ) {
Archivist.handlePathChanged();
Server.close(async () => {
console.log(`Server closed.`);
console.log(`Waiting 1 second...`);
await sleep(1000);
await start({server_port:port});
console.log(`Server restarted.`);
});
res.end(`Base path set to ${base_path} and saved to preferences. Server restarting...`);
} else {
res.end(`Base path not changed.`);
}
});
}
async function stop() {
let resolve;
const pr = new Promise(res => resolve = res);
console.log(`Closing library server...`);
Server.close(() => {
console.log(`Library server closed.`);
resolve();
});
return pr;
}
function IndexView(urls) {
return `
<!DOCTYPE html>
<meta charset=utf-8>
<title>Your HTML Library</title>
<style>
:root {
font-family: sans-serif;
background: lavenderblush;
}
body {
display: table;
margin: 0 auto;
background: silver;
padding: 0.5em;
box-shadow: 0 1px 1px purple;
}
form {
}
fieldset {
border: thin solid purple;
}
button, input, output {
}
input.long {
width: 100%;
min-width: 250px;
}
output {
font-size: smaller;
color: purple;
}
h1 {
margin: 0;
}
h2 {
margin-top: 0;
}
</style>
<h1>22120</h1>
<h2>Internet Offline Library</h2>
<h2>Archive Index</h2>
<ul>
${
urls.map(([url,title]) => `
<li>
<a target=_blank href=${url}>${title||url}</a>
</li>
`).join('\n')
}
</ul>
`
}