WF test using selhst icons

server.js

@@ -0,0 +1,89 @@
+import express from 'express'
+import fetch from 'node-fetch'
+import path from 'path'
+
+const app = express()
+const PORT = 4050
+const CDN_ROOT = 'https://cdn.jsdelivr.net/gh/selfhst/icons'
+const CDN_PATH = 'svg'
+
+async function fileExists(url) {
+  try {
+    const resp = await fetch(url, { method: 'HEAD' });
+    return resp.ok;
+  } catch {
+    return false;
+  }
+}
+
+async function fetchAndPipe(url, res) {
+  const response = await fetch(url);
+  if (!response.ok) return res.status(404).send('File not found');
+  res.type(path.extname(url).slice(1));
+  response.body.pipe(res);
+}
+
+app.get('/*', async (req, res) => {
+  const urlPath = req.path;
+  const extMatch = urlPath.match(/\.(\w+)$/);
+  if (!extMatch)
+    return res.status(404).send('File extension missing');
+
+  const ext = extMatch[1].toLowerCase();
+  if (!['png', 'webp', 'svg'].includes(ext))
+    return res.status(404).send('Format not supported');
+
+  const filename = urlPath.slice(1);
+  const lowerFilename = filename.toLowerCase();
+
+  const isSuffix = lowerFilename.endsWith('-light.svg') || lowerFilename.endsWith('-dark.svg');
+
+  if (isSuffix) {
+    return fetchAndPipe(`${CDN_ROOT}/${CDN_PATH}/${filename}`, res);
+  }
+
+  let mainUrl;
+  if (ext === 'png') {
+          mainUrl = `${CDN_ROOT}/png/${filename}`;
+  } else if (ext === 'webp') {
+          mainUrl = `${CDN_ROOT}/webp/${filename}`;
+  } else if (ext === 'svg') { 
+      mainUrl = `${CDN_ROOT}/svg/${filename}`;
+  } else {
+          mainUrl = null; 
+  }
+  
+  const hasColor = !!req.query['color'] && req.query['color'].trim() !== '';
+
+  if (ext === 'svg') {
+    if (hasColor) {
+      const baseName = filename.replace(/\.(png|webp|svg)$/, '');
+      const suffixUrl = `${CDN_ROOT}/${CDN_PATH}/${baseName}-light.svg`;
+      if (await fileExists(suffixUrl)) {
+        let svgContent = await fetch(suffixUrl).then(r => r.text());
+        const color = req.query['color'].startsWith('#') ? req.query['color'] : `#${req.query['color']}`;
+        svgContent = svgContent
+          .replace(/style="[^"]*fill:\s*#fff[^"]*"/gi, (match) => {
+            console.log('Replacing style fill:', match);
+            return match.replace(/fill:\s*#fff/gi, `fill:${color}`);
+          })
+          .replace(/fill="#fff"/gi, `fill="${color}"`);
+        return res.type('image/svg+xml').send(svgContent);
+      } else {
+        return fetchAndPipe(mainUrl, res);
+      }
+    } else {
+      return fetchAndPipe(mainUrl, res);
+    }
+  } else {
+    // PNG/WebP: serve directly
+    return fetchAndPipe(mainUrl, res);
+  }
+});
+
+app.get('/', (req, res) => {
+  res.send('Self-hosted icon server');
+});
+app.listen(PORT, () => {
+  console.log(`Listening on port ${PORT}`);
+});