Send web push notifications from worker

send_push.js

@@ -0,0 +1,33 @@
+#!/usr/bin/env node
+const fs = require('fs');
+const webpush = require('web-push');
+
+function readStdin() {
+  return new Promise(resolve => {
+    let data = '';
+    process.stdin.setEncoding('utf8');
+    process.stdin.on('data', chunk => data += chunk);
+    process.stdin.on('end', () => resolve(data));
+  });
+}
+
+(async () => {
+  const configPath = process.argv[2] || `${process.env.HOME}/.config/mvlog/push.json`;
+  const payload = process.argv[3] || '{}';
+  const cfg = JSON.parse(fs.readFileSync(configPath, 'utf8'));
+  const input = JSON.parse(await readStdin() || '[]');
+  const subs = Array.isArray(input) ? input : [];
+  if (!cfg.public_key || !cfg.private_key || !subs.length) return;
+  webpush.setVapidDetails(cfg.subject || 'mailto:admin@bubulescu.org', cfg.public_key, cfg.private_key);
+  let sent = 0;
+  for (const sub of subs) {
+    try {
+      await webpush.sendNotification(sub, payload);
+      sent++;
+    } catch (err) {
+      const code = err && err.statusCode ? ` status=${err.statusCode}` : '';
+      console.error(`push failed${code}: ${err.message || err}`);
+    }
+  }
+  console.log(`push sent: ${sent}/${subs.length}`);
+})().catch(err => { console.error(err.stack || err); process.exit(1); });