example-spotify-class.js

// Example spotify class
// const spotifyAPI = new SpotifyAPI('<Your Client ID>', '<Your Client Secret>', '<Your Redirect URI>');

// spotifyAPI.getAuthToken().then(() => {
//     spotifyAPI.setTokenInCookie();

//     spotifyAPI.search('Song Name').then(tracks => {
//         console.log(tracks);
//     });
// });
class SpotifyAPI {
    constructor(clientId, clientSecret, redirectUri) {
        this.clientId = clientId;
        this.clientSecret = clientSecret;
        this.redirectUri = redirectUri;
        this.token = null;
    }

    async getAuthToken() {
        const response = await fetch('https://accounts.spotify.com/api/token', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                'Authorization': 'Basic ' + btoa(this.clientId + ':' + this.clientSecret),
            },
            body: new URLSearchParams({
                'grant_type': 'client_credentials'
            })
        });

        const data = await response.json();
        this.token = data.access_token;
        return this.token;
    }

    setTokenInCookie() {
        document.cookie = `spotifyAuthToken=${this.token}; path=/`;
    }

    async search(query) {
        const response = await fetch(`https://api.spotify.com/v1/search?q=${query}&type=track`, {
            method: 'GET',
            headers: {
                'Authorization': 'Bearer ' + this.token,
            }
        });

        const data = await response.json();
        return data.tracks.items;
    }
}