feat(app): add Nostr identity login via NIP-07 browser extension
Create useNostrIdentity.ts composable with NIP-07 window.nostr API integration (getPublicKey, signEvent, extension detection). Add npub bech32 encoding to bech32.ts. Create NostrLogin.vue settings component with login/logout, npub display with copy, and extension install guidance. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Dorian
co-authored by
Claude Opus 4.6
Claude Opus 4.6
parent
71125bfde9
commit
685d357573
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<template>
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<div class="space-y-3">
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<h3 class="text-sm font-bold" :class="isDark ? 'text-white/90' : 'text-gray-900'">
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Nostr Identity
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</h3>
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<!-- Logged in state -->
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<div
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v-if="isLoggedIn"
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class="flex items-center gap-3 p-3 rounded-xl"
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:class="isDark
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? 'bg-white/[0.03] border border-white/5'
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: 'bg-black/[0.02] border border-black/5'"
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>
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<div class="w-8 h-8 rounded-full bg-purple-500/20 flex items-center justify-center">
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<svg class="w-4 h-4 text-purple-400" viewBox="0 0 24 24" fill="currentColor">
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<path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 3c1.66 0 3 1.34 3 3s-1.34 3-3 3-3-1.34-3-3 1.34-3 3-3zm0 14.2c-2.5 0-4.71-1.28-6-3.22.03-1.99 4-3.08 6-3.08 1.99 0 5.97 1.09 6 3.08-1.29 1.94-3.5 3.22-6 3.22z" />
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</svg>
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</div>
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<div class="flex-1 min-w-0">
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<div
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class="text-xs font-medium"
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:class="isDark ? 'text-white/80' : 'text-gray-800'"
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>
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Connected
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</div>
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<button
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class="text-[10px] font-mono mt-0.5 hover:underline"
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:class="isDark ? 'text-purple-400/60' : 'text-purple-600/60'"
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@click="copyNpub"
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>
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{{ copied ? 'Copied!' : truncatedNpub }}
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</button>
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</div>
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<button
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class="text-[10px] px-2 py-1 rounded-md transition-colors"
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:class="isDark
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? 'text-red-400/60 hover:text-red-400 hover:bg-red-500/10'
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: 'text-red-500/60 hover:text-red-600 hover:bg-red-50'"
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@click="logout"
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>
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Logout
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</button>
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</div>
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<!-- Logged out state -->
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<template v-else>
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<button
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v-if="isAvailable"
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:disabled="isLoading"
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class="w-full px-4 py-2.5 rounded-xl text-sm font-medium transition-all active:scale-[0.98]"
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:class="isLoading
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? isDark
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? 'bg-purple-500/10 text-purple-400/40 cursor-wait'
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: 'bg-purple-50 text-purple-300 cursor-wait'
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: 'bg-purple-500/10 text-purple-400 hover:bg-purple-500/20'"
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@click="login"
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>
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{{ isLoading ? 'Connecting...' : 'Login with Nostr' }}
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</button>
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<div
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v-else
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class="p-3 rounded-xl text-xs"
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:class="isDark
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? 'bg-white/[0.03] border border-white/5 text-white/40'
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: 'bg-black/[0.02] border border-black/5 text-gray-500'"
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>
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No Nostr extension detected. Install
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<a
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href="https://github.com/nicolgit/nos2x"
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target="_blank"
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rel="noopener noreferrer"
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class="text-purple-400 hover:underline"
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>nos2x</a>,
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<a
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href="https://getalby.com"
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target="_blank"
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rel="noopener noreferrer"
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class="text-purple-400 hover:underline"
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>Alby</a>, or another NIP-07 browser extension.
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</div>
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</template>
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<!-- Error -->
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<p
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v-if="error"
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class="text-[10px] text-red-400"
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>
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{{ error }}
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</p>
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</div>
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</template>
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<script setup lang="ts">
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import { ref } from 'vue'
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import { useTheme } from '@/composables/useTheme'
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import { useNostrIdentity } from '@/composables/useNostrIdentity'
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const { isDark } = useTheme()
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const {
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isAvailable,
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isLoggedIn,
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isLoading,
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error,
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npub,
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truncatedNpub,
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login,
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logout,
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} = useNostrIdentity()
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const copied = ref(false)
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async function copyNpub() {
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if (!npub.value) return
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await navigator.clipboard.writeText(npub.value)
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copied.value = true
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setTimeout(() => { copied.value = false }, 2000)
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}
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</script>
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@@ -0,0 +1,119 @@
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import { ref, computed, onMounted } from 'vue'
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import { encodeNpub } from '@/utils/bech32'
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/**
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* NIP-07 browser extension interface (nos2x, Alby, etc.)
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*/
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interface NostrExtension {
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getPublicKey(): Promise<string>
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signEvent(event: UnsignedNostrEvent): Promise<SignedNostrEvent>
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getRelays?(): Promise<Record<string, { read: boolean; write: boolean }>>
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nip04?: {
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encrypt(pubkey: string, plaintext: string): Promise<string>
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decrypt(pubkey: string, ciphertext: string): Promise<string>
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}
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}
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export interface UnsignedNostrEvent {
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kind: number
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created_at: number
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tags: string[][]
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content: string
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}
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export interface SignedNostrEvent extends UnsignedNostrEvent {
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id: string
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pubkey: string
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sig: string
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}
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declare global {
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interface Window {
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nostr?: NostrExtension
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}
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}
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const pubkey = ref<string | null>(null)
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const isAvailable = ref(false)
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const isLoading = ref(false)
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const error = ref<string | null>(null)
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export function useNostrIdentity() {
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const npub = computed(() => {
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if (!pubkey.value) return null
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try {
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return encodeNpub(pubkey.value)
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} catch {
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return null
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}
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})
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const isLoggedIn = computed(() => !!pubkey.value)
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const truncatedNpub = computed(() => {
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if (!npub.value) return null
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return npub.value.slice(0, 12) + '...' + npub.value.slice(-8)
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})
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function checkAvailability() {
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isAvailable.value = typeof window !== 'undefined' && !!window.nostr
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}
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async function login(): Promise<void> {
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error.value = null
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if (!window.nostr) {
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error.value = 'No Nostr extension detected. Install nos2x, Alby, or another NIP-07 extension.'
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return
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}
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isLoading.value = true
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try {
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const pk = await window.nostr.getPublicKey()
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pubkey.value = pk
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} catch (e) {
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error.value = e instanceof Error ? e.message : 'Failed to get public key'
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} finally {
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isLoading.value = false
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}
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}
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async function signEvent(event: UnsignedNostrEvent): Promise<SignedNostrEvent | null> {
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error.value = null
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if (!window.nostr) {
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error.value = 'No Nostr extension detected'
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return null
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}
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try {
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return await window.nostr.signEvent(event)
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} catch (e) {
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error.value = e instanceof Error ? e.message : 'Failed to sign event'
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return null
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}
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}
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function logout() {
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pubkey.value = null
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error.value = null
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}
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onMounted(() => {
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checkAvailability()
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// Some extensions load async — recheck after a short delay
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setTimeout(checkAvailability, 500)
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})
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return {
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pubkey,
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npub,
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isAvailable,
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isLoggedIn,
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isLoading,
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error,
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truncatedNpub,
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login,
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logout,
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signEvent,
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checkAvailability,
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}
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}
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@@ -81,6 +81,34 @@ export function bytesToHex(bytes: Uint8Array): string {
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return Array.from(bytes).map(b => b.toString(16).padStart(2, '0')).join('')
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}
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export function hexToBytes(hex: string): Uint8Array {
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const bytes = new Uint8Array(hex.length / 2)
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for (let i = 0; i < hex.length; i += 2) {
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bytes[i / 2] = parseInt(hex.slice(i, i + 2), 16)
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}
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return bytes
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}
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function createChecksum(hrp: string, data: number[]): number[] {
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const values = [...hrpExpand(hrp), ...data, 0, 0, 0, 0, 0, 0]
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const mod = polymod(values) ^ 1
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const ret: number[] = []
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for (let i = 0; i < 6; i++) ret.push((mod >> (5 * (5 - i))) & 31)
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return ret
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}
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export function bech32Encode(hrp: string, data: Uint8Array): string {
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const fiveBit = convertBits(Array.from(data), 8, 5, true)
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if (!fiveBit) throw new Error('Failed to convert bits')
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const checksum = createChecksum(hrp, fiveBit)
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return hrp + '1' + [...fiveBit, ...checksum].map(d => CHARSET[d]).join('')
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}
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/** Encode a hex public key as npub1... */
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export function encodeNpub(hexPubkey: string): string {
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return bech32Encode('npub', hexToBytes(hexPubkey))
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}
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export interface NIP19Decoded {
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type: 'npub' | 'note' | 'nevent' | 'nprofile' | 'unknown'
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hex: string
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