88 lines
2.6 KiB
JavaScript
88 lines
2.6 KiB
JavaScript
import fs from 'fs'
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import express from 'express'
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import path from 'path'
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const app = express()
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const PORT = 4050
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const APP_DIR = process.cwd()
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async function readFile(filePath, res) {
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const readStream = fs.createReadStream(filePath);
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readStream.on("open", () => {
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res.type(path.extname(filePath).slice(1));
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readStream.pipe(res);
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});
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readStream.on("error", () => {
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res.set("Content-Type", "text/plain");
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res.status(404).end("Not found");
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});
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}
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app.get('/', (_req, res) => {
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res.send('Self-hosted icon server');
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});
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app.get('/*', async (req, res) => {
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const urlPath = req.path;
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const extMatch = urlPath.match(/\.(\w+)$/);
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if (!extMatch)
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return res.status(404).send('File extension missing');
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const ext = extMatch[1].toLowerCase();
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if (!['png', 'webp', 'svg'].includes(ext))
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return res.status(404).send('Format not supported');
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const filename = urlPath.slice(1);
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const lowerFilename = filename.toLowerCase();
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const isSuffix = lowerFilename.endsWith('-light.svg') || lowerFilename.endsWith('-dark.svg');
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if (isSuffix) {
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return readFile(`${APP_DIR}/svg/${filename}`, res);
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}
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let filePath;
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if (ext === 'png') {
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filePath = `${APP_DIR}/png/${filename}`;
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} else if (ext === 'webp') {
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filePath = `${APP_DIR}/webp/${filename}`;
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} else if (ext === 'svg') {
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filePath = `${APP_DIR}/svg/${filename}`;
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} else {
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filePath = null;
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}
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const hasColor = !!req.query['color'] && req.query['color'].trim() !== '';
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if (ext === 'svg') {
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if (hasColor) {
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const baseName = filename.replace(/\.(png|webp|svg)$/, '');
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const baseFile = `${APP_DIR}/svg/${baseName}-light.svg`;
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if (fs.existsSync(baseFile)) {
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let svgContent = fs.readFileSync(baseFile, { encoding: 'utf-8'});
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const color = req.query['color'].startsWith('#') ? req.query['color'] : `#${req.query['color']}`;
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svgContent = svgContent
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.replace(/style="[^"]*fill:\s*#fff[^"]*"/gi, (match) => {
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console.log('Replacing style fill:', match);
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return match.replace(/fill:\s*#fff/gi, `fill:${color}`);
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})
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.replace(/fill="#fff"/gi, `fill="${color}"`);
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return res.type('image/svg+xml').send(svgContent);
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} else {
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return res.status(404).end("Not found");
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}
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} else {
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return readFile(filePath, res);
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}
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} else {
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// PNG/WebP: serve directly
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return readFile(filePath, res);
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}
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});
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app.listen(PORT, () => {
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console.log(`Listening on port ${PORT}`);
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}); |