Archipelago — open-source initial import

aiui/packages/app/src/composables/useLnurlAuth.ts

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+import { ref } from 'vue'
+
+const lnurlAuthUrl = ref<string | null>(null)
+const isAuthenticated = ref(false)
+const lightningIdentity = ref<string | null>(null)
+
+const STORAGE_KEY = 'aiui-lnurl-auth-identity'
+
+function loadIdentity() {
+  try {
+    const stored = localStorage.getItem(STORAGE_KEY)
+    if (stored) {
+      lightningIdentity.value = stored
+      isAuthenticated.value = true
+    }
+  } catch { /* ignore */ }
+}
+
+loadIdentity()
+
+export function useLnurlAuth() {
+  function generateLnurlAuthUrl(): string {
+    // Generate a challenge for LNURL-auth
+    // In production, this would come from the server
+    const challenge = Array.from(crypto.getRandomValues(new Uint8Array(32)))
+      .map(b => b.toString(16).padStart(2, '0'))
+      .join('')
+
+    const url = `lnurl-auth://auth?tag=login&k1=${challenge}`
+    lnurlAuthUrl.value = url
+    return url
+  }
+
+  function setIdentity(pubkey: string) {
+    lightningIdentity.value = pubkey
+    isAuthenticated.value = true
+    localStorage.setItem(STORAGE_KEY, pubkey)
+  }
+
+  function clearIdentity() {
+    lightningIdentity.value = null
+    isAuthenticated.value = false
+    localStorage.removeItem(STORAGE_KEY)
+    lnurlAuthUrl.value = null
+  }
+
+  return {
+    lnurlAuthUrl,
+    isAuthenticated,
+    lightningIdentity,
+    generateLnurlAuthUrl,
+    setIdentity,
+    clearIdentity,
+  }
+}