545 lines
18 KiB
JavaScript
545 lines
18 KiB
JavaScript
/**
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* Nostr Chat Widget - Embeddable Version (Glassmorphism Design)
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*
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* EMBED IT WITH:
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* <script src="https://btcforplebs.com/nostr-chat-widget.js"
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* data-nostr-pubkey="YOUR_PUBKEY_HEX_FORMAT"
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* data-brand-name="My Company"
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* data-color="#8e30eb"
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* data-color-secondary="#ff8c00">
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* </script>
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*/
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(function() {
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'use strict';
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// Get configuration from script tag
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const scriptTag = document.currentScript;
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const csPubkey = scriptTag.getAttribute('data-nostr-pubkey') || 'PUBKEY_TO_RECEICE_MESSAGES';
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const brandName = scriptTag.getAttribute('data-brand-name') || 'Support Team Messaging';
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const primaryColor = scriptTag.getAttribute('data-color') || '#fdad01';
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const secondaryColor = scriptTag.getAttribute('data-color-secondary') || '#000000';
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// Default relay configuration
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const DEFAULT_RELAYS = [
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'wss://relay.damus.io',
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'wss://relay.primal.net',
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'wss://nos.lol',
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'wss://relay.btcforplebs.com'
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];
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// Add viewport meta tag for mobile optimization
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let viewportMeta = document.querySelector('meta[name="viewport"]');
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if (!viewportMeta) {
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viewportMeta = document.createElement('meta');
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viewportMeta.name = 'viewport';
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viewportMeta.content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no';
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document.head.appendChild(viewportMeta);
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}
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// Inject custom styles with glassmorphism
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const style = document.createElement('style');
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style.textContent = `
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.safe-area-bottom {
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padding-bottom: env(safe-area-inset-bottom);
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}
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#nostr-chat-widget-root > div {
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pointer-events: auto !important;
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z-index: 99999 !important;
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}
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.glass-morphism {
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background: rgba(255, 255, 255, 0.08);
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backdrop-filter: blur(20px);
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-webkit-backdrop-filter: blur(20px);
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border: 1px solid rgba(255, 255, 255, 0.15);
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}
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.glass-morphism-light {
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background: rgba(255, 255, 255, 0.03);
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backdrop-filter: blur(10px);
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-webkit-backdrop-filter: blur(10px);
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}
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.glass-input {
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background: rgba(255, 255, 255, 0.2);
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backdrop-filter: blur(8px);
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-webkit-backdrop-filter: blur(8px);
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border: 1px solid rgba(255, 255, 255, 0.3);
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}
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.glass-input:focus {
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background: rgba(255, 255, 255, 0.25);
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border: 1px solid rgba(255, 255, 255, 0.4);
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}
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.glass-input::placeholder {
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color: rgba(255, 255, 255, 0.6);
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}
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@media (max-width: 640px) {
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#nostr-chat-widget-root .chat-window-mobile {
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position: fixed !important;
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top: 0 !important;
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left: 0 !important;
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right: 0 !important;
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bottom: 0 !important;
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width: 100% !important;
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height: 100% !important;
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max-height: 100vh !important;
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border-radius: 0 !important;
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}
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}
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`;
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document.head.appendChild(style);
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// Create widget container
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const widgetRoot = document.createElement('div');
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widgetRoot.id = 'nostr-chat-widget-root';
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document.body.appendChild(widgetRoot);
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// Import map for nostr-tools
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const importMap = document.createElement('script');
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importMap.type = 'importmap';
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importMap.textContent = JSON.stringify({
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imports: {
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'nostr-tools': 'https://esm.sh/nostr-tools@1.17.0'
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}
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});
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document.head.appendChild(importMap);
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// Main widget script
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const widgetScript = document.createElement('script');
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widgetScript.type = 'module';
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widgetScript.textContent = `
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import {
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relayInit,
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generatePrivateKey,
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getPublicKey,
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getEventHash,
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signEvent,
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nip19,
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nip04
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} from 'nostr-tools';
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const CONFIG = {
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relays: ${JSON.stringify(DEFAULT_RELAYS)},
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csPubkey: '${csPubkey}',
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brandName: '${brandName}',
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primaryColor: '${primaryColor}',
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secondaryColor: '${secondaryColor}'
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};
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let state = {
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isOpen: false,
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messages: [],
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inputMessage: '',
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myPrivKey: null,
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myPubKey: null,
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relays: [],
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connected: false,
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sessionId: null
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};
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function getSessionKey() {
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const stored = localStorage.getItem('nostr_chat_session');
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if (stored) {
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try {
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const session = JSON.parse(stored);
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if (Date.now() - session.created < 24 * 60 * 60 * 1000) {
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return session.privKey;
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}
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} catch (e) {}
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}
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const privKey = generatePrivateKey();
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localStorage.setItem('nostr_chat_session', JSON.stringify({
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privKey,
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created: Date.now()
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}));
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return privKey;
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}
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async function init() {
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state.myPrivKey = getSessionKey();
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state.myPubKey = getPublicKey(state.myPrivKey);
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state.sessionId = state.myPubKey.substring(0, 8);
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console.log('🔑 Session Identity:', nip19.npubEncode(state.myPubKey));
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const relayPromises = CONFIG.relays.map(async (url) => {
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try {
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const relay = relayInit(url);
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relay.on('connect', () => {
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console.log(\`✓ Connected to \${url}\`);
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checkConnection();
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});
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relay.on('disconnect', () => {
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console.log(\`✗ Disconnected from \${url}\`);
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});
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await relay.connect();
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return relay;
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} catch (error) {
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console.error(\`Failed: \${url}:\`, error);
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return null;
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}
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});
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state.relays = (await Promise.all(relayPromises)).filter(r => r !== null);
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if (state.relays.length === 0) {
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addMessage('system', '⚠️ Failed to connect to any relays');
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return;
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}
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console.log(\`✓ Connected to \${state.relays.length}/\${CONFIG.relays.length} relays\`);
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subscribeToReplies();
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loadPreviousMessages();
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state.connected = true;
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render();
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}
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function checkConnection() {
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const connected = state.relays.some(r => r.status === 1);
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state.connected = connected;
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render();
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}
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function subscribeToReplies() {
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const filters = [{
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kinds: [4],
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'#p': [state.myPubKey],
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authors: [CONFIG.csPubkey],
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since: Math.floor(Date.now() / 1000) - 86400
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}];
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console.log('🔔 Subscribing to replies...');
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state.relays.forEach(relay => {
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const sub = relay.sub(filters);
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sub.on('event', (event) => {
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handleIncomingMessage(event);
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});
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sub.on('eose', () => {
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console.log(\`✓ Subscribed: \${relay.url}\`);
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});
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});
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}
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function loadPreviousMessages() {
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const stored = localStorage.getItem(\`nostr_chat_messages_\${state.sessionId}\`);
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if (stored) {
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try {
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const messages = JSON.parse(stored);
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messages.forEach(msg => state.messages.push(msg));
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render();
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} catch (e) {}
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}
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}
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function saveMessages() {
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localStorage.setItem(\`nostr_chat_messages_\${state.sessionId}\`, JSON.stringify(state.messages));
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}
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async function handleIncomingMessage(event) {
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try {
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if (state.messages.find(m => m.id === event.id)) {
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return;
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}
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console.log('📨 Received message');
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const decryptedText = await nip04.decrypt(
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state.myPrivKey,
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event.pubkey,
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event.content
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);
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const message = {
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id: event.id,
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text: decryptedText,
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sender: 'cs',
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timestamp: new Date(event.created_at * 1000).toISOString()
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};
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addMessage('cs', decryptedText, message);
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if (!document.hasFocus()) {
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const originalTitle = document.title;
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document.title = '💬 New message!';
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setTimeout(() => {
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document.title = originalTitle;
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}, 3000);
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}
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} catch (error) {
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console.error('Error decrypting message:', error);
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}
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}
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async function sendMessage() {
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if (!state.inputMessage.trim()) return;
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const messageText = state.inputMessage;
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state.inputMessage = '';
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// Show message immediately (optimistic UI)
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const tempMessage = {
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id: 'temp_' + Date.now(),
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text: messageText,
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sender: 'user',
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timestamp: new Date().toISOString()
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};
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state.messages.push(tempMessage);
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render();
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scrollToBottom();
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try {
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console.log('🔐 Encrypting and sending...');
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const encrypted = await nip04.encrypt(
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state.myPrivKey,
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CONFIG.csPubkey,
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messageText
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);
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let event = {
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kind: 4,
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created_at: Math.floor(Date.now() / 1000),
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tags: [['p', CONFIG.csPubkey]],
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content: encrypted,
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pubkey: state.myPubKey
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};
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event.id = getEventHash(event);
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event.sig = signEvent(event, state.myPrivKey);
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let published = 0;
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for (const relay of state.relays) {
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try {
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await relay.publish(event);
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published++;
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console.log(\`✓ Published to \${relay.url}\`);
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} catch (err) {
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console.error(\`✗ Failed: \${relay.url}:\`, err);
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}
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}
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if (published === 0) {
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addMessage('system', '⚠️ Failed to send - no relay connections');
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return;
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}
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console.log(\`✓ Published to \${published}/\${state.relays.length} relays\`);
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// Update temp message with real ID
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const msgIndex = state.messages.findIndex(m => m.id === tempMessage.id);
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if (msgIndex !== -1) {
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state.messages[msgIndex].id = event.id;
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}
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saveMessages();
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} catch (error) {
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console.error('Error sending:', error);
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addMessage('system', '⚠️ Failed to send message');
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}
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}
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function addMessage(sender, text, fullMessage = null) {
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const msg = fullMessage || {
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id: Date.now().toString(),
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text,
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sender,
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timestamp: new Date().toISOString()
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};
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state.messages.push(msg);
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saveMessages();
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render();
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scrollToBottom();
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}
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function scrollToBottom() {
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setTimeout(() => {
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const container = document.getElementById('nostr-messages');
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if (container) {
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container.scrollTop = container.scrollHeight;
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}
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}, 100);
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}
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function escapeHtml(text) {
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const div = document.createElement('div');
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div.textContent = text;
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return div.innerHTML;
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}
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function formatTime(timestamp) {
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const date = new Date(timestamp);
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return date.toLocaleTimeString('en-US', {
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hour: 'numeric',
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minute: '2-digit',
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hour12: true
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});
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}
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function render() {
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const container = document.getElementById('nostr-chat-widget-root');
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if (!container) return;
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if (!state.isOpen) {
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container.innerHTML = \`
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<div class="fixed bottom-4 right-4 sm:bottom-6 sm:right-6 z-[99999]">
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<button onclick="window.NostrChat.open()"
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style="background: linear-gradient(to bottom right, \${CONFIG.primaryColor}, \${CONFIG.secondaryColor});"
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class="hover:opacity-90 text-white rounded-full p-4 sm:p-5 shadow-2xl transition-all transform hover:scale-110 active:scale-95"
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aria-label="Open chat"
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>
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" class="sm:w-7 sm:h-7">
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<path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"></path>
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</svg>
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</button>
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</div>
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\`;
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return;
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}
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container.innerHTML = \`
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<div class="fixed inset-0 sm:inset-auto sm:bottom-6 sm:right-6 z-[99999]">
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<div class="glass-morphism chat-window-mobile rounded-none sm:rounded-2xl shadow-2xl w-full h-full sm:w-96 sm:h-[600px] max-w-full flex flex-col overflow-hidden">
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</div>
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<div style="background: linear-gradient(to bottom right, ${CONFIG.primaryColor}, ${CONFIG.secondaryColor});" class="text-white py-4 px-5 sm:px-6 rounded-t-2xl">
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<div class="flex items-center justify-between">
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<div class="flex items-center space-x-2">
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<img src="/assets/logo.svg" alt="logo" class="h-5 w-5 sm:h-6 sm:w-6 rounded" />
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<h3 class="font-semibold text-sm sm:text-base">${CONFIG.brandName}</h3>
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</div>
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<button onclick="window.NostrChat.close()" class="p-2 hover:bg-white/20 rounded-md transition-colors">
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<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><line x1="18" y1="6" x2="6" y2="18"></line><line x1="6" y1="6" x2="18" y2="18"/></svg>
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</button>
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</div>
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<div style="background: linear-gradient(to bottom right, ${CONFIG.primaryColor}, ${CONFIG.secondaryColor});" class="text-white rounded-2xl rounded-tr-sm px-3 py-2 sm:px-4 sm:py-3 shadow-md text-sm sm:text-base">
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${escapeHtml(msg.text)}
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</div>
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<div class="text-center text-white/60 mt-8">
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<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1" class="mx-auto mb-3 opacity-50">
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<path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"></path>
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</svg>
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<p class="text-sm">Start a conversation</p>
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</div>
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\` : state.messages.map(msg => {
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if (msg.sender === 'system') {
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return \`
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<div class="flex justify-center">
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<div class="bg-orange-100/40 backdrop-blur-sm text-orange-800 text-xs px-3 py-2 rounded-full border border-orange-300/50">
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\${escapeHtml(msg.text)}
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</div>
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</div>
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\`;
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} else if (msg.sender === 'user') {
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return \`
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<div class="flex justify-end">
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<div class="max-w-[85%] sm:max-w-xs">
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<div style="background: linear-gradient(to bottom right, \${CONFIG.primaryColor}, \${CONFIG.secondaryColor});" class="text-white rounded-2xl rounded-tr-sm px-3 py-2 sm:px-4 sm:py-3 shadow-md text-sm sm:text-base">
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\${escapeHtml(msg.text)}
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</div>
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<div class="text-xs text-white/60 mt-1 text-right">Sent \${formatTime(msg.timestamp)}</div>
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</div>
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</div>
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\`;
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} else if (msg.sender === 'cs') {
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return \`
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<div class="flex justify-start">
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<div class="max-w-[85%] sm:max-w-xs">
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<div style="background: linear-gradient(to bottom right, #9ca3af, #6b7280);" class="text-white rounded-2xl rounded-tl-sm px-3 py-2 sm:px-4 sm:py-3 shadow-md text-sm sm:text-base">
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\${escapeHtml(msg.text)}
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</div>
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<div class="text-xs text-white/60 mt-1">\${formatTime(msg.timestamp)}</div>
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</div>
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</div>
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\`;
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}
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return '';
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}).join('')}
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</div>
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<div class="p-3 sm:p-3.5 mb-2 flex-shrink-0 safe-area-bottom">
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<div class="glass-input rounded-xl p-2 flex gap-2 items-center">
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<input
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id="nostr-message-input"
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type="text"
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value="\${escapeHtml(state.inputMessage)}"
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placeholder="Type your message..."
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class="flex-1 bg-transparent px-2 py-1.5 focus:outline-none text-sm sm:text-base text-white placeholder-white/60"
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\${!state.connected ? 'disabled' : ''}
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>
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<button
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onclick="window.NostrChat.send()"
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\${!state.connected || !state.inputMessage.trim() ? 'disabled' : ''}
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style="background: linear-gradient(to bottom right, \${CONFIG.primaryColor}, \${CONFIG.secondaryColor});"
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class="hover:opacity-90 disabled:opacity-40 text-white p-2 rounded-lg transition-all disabled:cursor-not-allowed active:scale-95 flex-shrink-0"
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aria-label="Send message"
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>
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<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
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<line x1="22" y1="2" x2="11" y2="13"></line>
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<polygon points="22 2 15 22 11 13 2 9 22 2"></polygon>
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</svg>
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</button>
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</div>
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</div>
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</div>
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</div>
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\`;
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const messageInput = document.getElementById('nostr-message-input');
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if (messageInput) {
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messageInput.addEventListener('input', (e) => {
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state.inputMessage = e.target.value;
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const sendButton = document.querySelector('button[onclick="window.NostrChat.send()"]');
|
|
if (sendButton) {
|
|
sendButton.disabled = !state.connected || !e.target.value.trim();
|
|
}
|
|
});
|
|
messageInput.addEventListener('keypress', (e) => {
|
|
if (e.key === 'Enter' && !e.shiftKey) {
|
|
e.preventDefault();
|
|
sendMessage();
|
|
}
|
|
});
|
|
|
|
const messagesContainer = document.getElementById('nostr-messages');
|
|
if (messagesContainer && state.messages.length > 0) {
|
|
setTimeout(() => {
|
|
messagesContainer.scrollTop = messagesContainer.scrollHeight;
|
|
}, 100);
|
|
}
|
|
|
|
messageInput.focus();
|
|
}
|
|
}
|
|
|
|
// Expose global API
|
|
window.NostrChat = {
|
|
open: async () => {
|
|
state.isOpen = true;
|
|
render();
|
|
if (state.relays.length === 0) {
|
|
await init();
|
|
}
|
|
},
|
|
close: () => {
|
|
state.isOpen = false;
|
|
render();
|
|
},
|
|
send: sendMessage
|
|
};
|
|
|
|
// Initial render
|
|
render();
|
|
`;
|
|
|
|
document.body.appendChild(widgetScript);
|
|
})();
|