);
}
export default App;
```
### royalty_manager/spotify_auth.js
```javascript
const express = require('express');
const axios = require('axios');
const querystring = require('querystring');
require('dotenv').config(); // Load environment variables from .env file if needed
const app = express();
// Manually using the provided access and refresh tokens
let accessToken = 'BQByn5-ZijPYRqEpuh7or4JrzFAIO6kt7bBw5j4g7EG0a5sqqMpQxYqd_JOtr6Y3Ps2H3z6_x0_NcxUHXymTx_8q0IX1lu_invi3BEjZwZP88QjdqJypIO0jwCHpijwByF5x-Q1uFHXvo0yqTkCVWykLFmtNanPuV4jawm4595ugOBS5AHCGr7HasZqpLpKfErG2TvBEDaj0qyIlg3z_Pg';
let refreshToken = 'AQDuAqOw_C8bO4TGOP0wxLkhY4TENq9IhBFk6DNuHWukIzrZaC3rC3TwlZdkgY-KaRIvtco_DdCrmM_w6d-KSPbpFr7W1MB4tVW6DZ2VdvREwrnRPs32mvl29nZEoe-nRAA';
const CLIENT_ID_NEW = process.env.CLIENT_ID || 'your_spotify_client_id'; // Replace if using .env
const CLIENT_SECRET_NEW = process.env.CLIENT_SECRET || 'your_spotify_client_secret'; // Replace if using .env
// Function to refresh access token when expired
async function refreshAccessToken() {
const tokenUrl = 'https://accounts.spotify.com/api/token';
const data = {
grant_type: 'refresh_token',
refresh_token: refreshToken,
client_id: CLIENT_ID_NEW,
client_secret: CLIENT_SECRET_NEW
};
try {
const response = await axios.post(tokenUrl, querystring.stringify(data), {
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
}
});
accessToken = response.data.access_token; // Update access token
console.log('New access token:', accessToken);
return accessToken;
} catch (error) {
console.error('Error refreshing access token:', error.response.data);
}
}
// Function to get currently playing track using access token
async function getCurrentlyPlayingTrack() {
const url = 'https://api.spotify.com/v1/me/player/currently-playing';
try {
const response = await axios.get(url, {
headers: {
'Authorization': `Bearer ${accessToken}`
}
});
if (response.data && response.data.item) {
console.log('Currently playing track:', response.data.item.name);
return response.data.item;
} else {
console.log('No song is currently playing.');
}
} catch (error) {
// Check if the error is due to token expiration
if (error.response && error.response.status === 401) {
console.log('Access token expired, refreshing token...');
await refreshAccessToken(); // Refresh token
return await getCurrentlyPlayingTrack(); // Retry request
} else {
console.error('Error fetching currently playing track:', error.response ? error.response.data : error.message);
}
}
}
// Endpoint to display currently playing track
app.get('/currently-playing', async (req, res) => {
const track = await getCurrentlyPlayingTrack();
if (track) {
res.send(`Currently playing: ${track.name} by ${track.artists[0].name}`);
} else {
res.send('No song is currently playing.');
}
});
// Listen on port 3000
app.listen(3000, () => {
console.log('Server running on http://localhost:3000');
});
```
### sui-dapp-frontend/src/setupTests.js
```javascript
// jest-dom adds custom jest matchers for asserting on DOM nodes.
// allows you to do things like:
// expect(element).toHaveTextContent(/react/i)
// learn more: https://github.com/testing-library/jest-dom
import '@testing-library/jest-dom';
```
### sui-dapp-frontend/src/App.test.js
```javascript
import { render, screen } from '@testing-library/react';
import App from './App';
test('renders learn react link', () => {
render(