Add version number on webpage

web/build.mjs

@@ -2,8 +2,10 @@ import esbuild from 'esbuild';
 import { cpSync, mkdirSync, readFileSync, writeFileSync, existsSync, rmSync, readdirSync, statSync } from 'fs';
 import { join, relative } from 'path';
 import { createHash } from 'crypto';
+import { execSync } from 'child_process';
 
 const webDir = import.meta.dirname;
+const repoDir = join(webDir, '..');
 const srcDir = join(webDir, 'src');
 const distDir = join(webDir, 'dist');
 const isDev = process.argv.includes('--dev');
@@ -73,6 +75,25 @@ if (existsSync(workerSrc)) {
     writeFileSync(join(distDir, 'js', 'patch-worker.js'), workerContent);
 }
 
+// Get git version string
+let versionStr = 'unknown';
+let versionHash = 'unknown';
+try {
+    const hash = String(execSync('git rev-parse --short HEAD', { cwd: repoDir })).trim();
+    versionHash = hash;
+
+    let tag = '';
+    try {
+        tag = String(execSync('git describe --tags --exact-match', { cwd: repoDir, stdio: 'ignore' })).trim();
+    } catch {}
+    if (tag) {
+        versionStr = tag;
+    } else {
+        const dirty = String(execSync('git status --porcelain', { cwd: repoDir })).trim();
+        versionStr = dirty ? `${hash} (D)` : hash;
+    }
+} catch {}
+
 // Generate cache-busted index.html
 const bundleContent = readFileSync(join(distDir, 'bundle.js'));
 const bundleHash = createHash('md5').update(bundleContent).digest('hex').slice(0, 8);
@@ -96,9 +117,16 @@ html = html.replace(
     `css/style.css?h=${cssHash}`
 );
 
+// Inject version string and link
+html = html.replace('<span id="commit-hash"></span>', `<span id="commit-hash">${versionStr}</span>`);
+html = html.replace(
+    'href="https://github.com/nicoverbruggen/kobopatch-webui"',
+    `href="https://github.com/nicoverbruggen/kobopatch-webui/commit/${versionHash}"`
+);
+
 writeFileSync(join(distDir, 'index.html'), html);
 
-console.log(`Built to ${distDir} (bundle: ${bundleHash}, css: ${cssHash})`);
+console.log(`Built to ${distDir} (bundle: ${bundleHash}, css: ${cssHash}, version: ${versionStr})`);
 
 // Dev server mode
 if (isDev) {

web/src/index.html

@@ -377,13 +377,18 @@
 
     <footer class="site-footer">
         <p>
-            <a href="#" id="btn-how-it-works">How does this work?</a><br/>
+            <a href="#" id="btn-how-it-works">How does this work?</a>
+            &nbsp;&middot;&nbsp;
+            <a id="commit-link" href="https://github.com/nicoverbruggen/kobopatch-webui" target="_blank">Version <span id="commit-hash"></span></a>
             <br/>
-            Built on <a href="https://github.com/pgaskin/kobopatch" target="_blank">kobopatch</a> by pgaskin.
+            <br/>
-            Patches and discussion on the <a href="https://www.mobileread.com/forums/forumdisplay.php?f=247" target="_blank">MobileRead forums</a>.
+            Created by <a href="https://nicoverbruggen.be" target="_blank">Nico Verbruggen</a>.
+            Readerly is part of my <a href="https://ebook-fonts.nicoverbruggen.be" target="_blank">curated font collection</a>.
+            <br/>
+            Built on <a href="https://github.com/pgaskin/kobopatch" target="_blank">kobopatch</a> and <a href="https://pgaskin.net/NickelMenu/" target="_blank">NickelMenu</a> by Patrick Gaskin.
         </p>
         <p>
-             Source code available <a href="https://github.com/nicoverbruggen/kobopatch-webui" target="_blank">on GitHub</a>. This project is not affiliated with Rakuten Kobo Inc.
+            This project is not affiliated with Rakuten Kobo Inc.
         </p>
     </footer>