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server.js
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server.js
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const express = require('express');
const path = require('path');
const glob = require('glob');
const argv = require('minimist')(process.argv.slice(2));
const sort = require('./sort');
const app = express();
const port = process.env.PORT || 5000;
const rootDir = argv.dir || argv.R;
if (rootDir !== undefined) {
// Serve files from specified root directory
app.use('/', express.static(rootDir));
}
const mangaDir = argv['manga-dir'] || argv.M;
if (mangaDir === undefined) {
console.log('No manga directory specified.');
process.exit(1);
}
// Serve images from specified directory
app.use('/images', express.static(mangaDir));
const findImages = () => {
const formats = ['jpg', 'jpeg', 'gif', 'png', 'tiff', 'bmp'];
const pattern = `*@(${formats.join('|')})`;
const options = {
cwd: mangaDir,
matchBase: true,
};
// matchBase is equivalent to **/patt
glob(pattern, options, (err, files) => {
files.sort(sort.numCompare);
global.files = files;
});
};
findImages();
const inbounds = n => n >= 0 && n < global.files.length;
app.get('/api/manga', (req, res) => {
const { n: strN } = req.query;
const n = Number(strN);
if (!inbounds(n)) {
res.send({
error: `No such file index: ${n}`,
});
return;
}
const image = global.files[n];
const p = path.parse(image);
const header = p.dir ? `${p.dir}/${p.name}` : p.name;
res.send({
file: encodeURIComponent(image),
title: p.name,
header,
hasPrev: inbounds(n - 1),
hasNext: inbounds(n + 1),
});
});
app.listen(port, () => console.log(`Listening on port ${port}`));