Feat: Notify ntfy on signin

functions/api/signin.js

@@ -1,17 +1,55 @@
+const notify = (env, title, message, level = 2) =>
+  env.NTFY_TOPIC
+    ? fetch(`https://ntfy.sh/${env.NTFY_TOPIC}`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "text/plain",
+          Title: title,
+          Priority: String(level),
+        },
+        body: message,
+      }).catch(() => {})
+    : Promise.resolve();
+
 export async function onRequestPost({ request, env }) {
-    try {
-        const { 'g-recaptcha-response': token, ...body } = await request.json();
-        const vR = await fetch("https://www.google.com/recaptcha/api/siteverify", { method: "POST", headers: { "Content-Type": "application/x-www-form-urlencoded" }, body: `secret=${env.RECAPCHA_KEY}&response=${token}` });
-        if (!(await vR.json()).success) return new Response("CAPTCHA verification failed.", { status: 403 });
+  try {
+    const { "g-recaptcha-response": token, ...body } = await request.json();
 
-        const { username, pass_hash } = body;
-        if (!username || !pass_hash) return new Response("Missing fields", { status: 400 });
+    const vR = await fetch(
+      "https://www.google.com/recaptcha/api/siteverify",
+      {
+        method: "POST",
+        headers: { "Content-Type": "application/x-www-form-urlencoded" },
+        body: `secret=${env.RECAPCHA_KEY}&response=${token}`,
+      }
+    );
 
-        const user = await env.D1_EV.prepare("SELECT pass_hash FROM users WHERE username = ?").bind(username).first();
-        if (user?.pass_hash !== pass_hash) return new Response("Invalid credentials", { status: 401 });
-        
-        return Response.json({ success: true, username: username });
-    } catch (e) {
-        return new Response(e.message, { status: 500 });
-    }
+    if (!(await vR.json()).success)
+      return new Response("CAPTCHA verification failed.", { status: 403 });
+
+    const { username, pass_hash } = body;
+    if (!username || !pass_hash)
+      return new Response("Missing fields", { status: 400 });
+
+    const user = await env.D1_EV.prepare(
+      "SELECT pass_hash FROM users WHERE username = ?"
+    )
+      .bind(username)
+      .first();
+
+    if (user?.pass_hash !== pass_hash)
+      return new Response("Invalid credentials", { status: 401 });
+
+    env.NTFY_TOPIC &&
+      notify(
+        env,
+        "4ev.link: signin",
+        `user=${username}`,
+        2
+      );
+
+    return Response.json({ success: true, username });
+  } catch (e) {
+    return new Response(e.message, { status: 500 });
+  }
 }