From c539c4fee3f9d136ea0440bea49ca5c85058ce58 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Lohrer?= <info.empeiria@gmail.com>
Date: Wed, 15 Apr 2026 15:18:41 +0200
Subject: [PATCH] spa: naddr/habla-link-helper (tdd)

---
 app/src/lib/nostr/naddr.ts   | 22 ++++++++++++++++++++++
 app/tests/unit/naddr.test.ts | 24 ++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 app/src/lib/nostr/naddr.ts
 create mode 100644 app/tests/unit/naddr.test.ts

diff --git a/app/src/lib/nostr/naddr.ts b/app/src/lib/nostr/naddr.ts
new file mode 100644
index 0000000..9db13b2
--- /dev/null
+++ b/app/src/lib/nostr/naddr.ts
@@ -0,0 +1,22 @@
+import { nip19 } from 'nostr-tools';
+import { HABLA_BASE } from './config';
+
+export interface NaddrArgs {
+  pubkey: string;
+  kind: number;
+  identifier: string;
+  relays?: string[];
+}
+
+export function buildNaddr(args: NaddrArgs): string {
+  return nip19.naddrEncode({
+    pubkey: args.pubkey,
+    kind: args.kind,
+    identifier: args.identifier,
+    relays: args.relays ?? [],
+  });
+}
+
+export function buildHablaLink(args: NaddrArgs): string {
+  return `${HABLA_BASE}${buildNaddr(args)}`;
+}
diff --git a/app/tests/unit/naddr.test.ts b/app/tests/unit/naddr.test.ts
new file mode 100644
index 0000000..b08d9f8
--- /dev/null
+++ b/app/tests/unit/naddr.test.ts
@@ -0,0 +1,24 @@
+import { describe, expect, it } from 'vitest';
+import { buildHablaLink } from '$lib/nostr/naddr';
+
+describe('buildHablaLink', () => {
+  it('erzeugt einen habla.news/a/-Link mit naddr1-Bech32', () => {
+    const link = buildHablaLink({
+      pubkey: '4fa5d1c413e2b45e10d40bf3562ab701a5331206e359c90baae0e99bfd6c6e41',
+      kind: 30023,
+      identifier: 'dezentrale-oep-oer',
+      relays: ['wss://relay.damus.io'],
+    });
+    expect(link).toMatch(/^https:\/\/habla\.news\/a\/naddr1[a-z0-9]+$/);
+  });
+
+  it('ist deterministisch für gleiche Inputs', () => {
+    const args = {
+      pubkey: '4fa5d1c413e2b45e10d40bf3562ab701a5331206e359c90baae0e99bfd6c6e41',
+      kind: 30023,
+      identifier: 'foo',
+      relays: ['wss://relay.damus.io'],
+    };
+    expect(buildHablaLink(args)).toBe(buildHablaLink(args));
+  });
+});