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JohnnyCrazyJohnnyCrazy
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Added TokenSwapAuth and console example for it JohnnyCrazy#451 
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Lines changed: 632 additions & 1 deletion

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‎SpotifyAPI.Web.Examples/Example.TokenSwap/Client/Client.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<ItemGroup>
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<ProjectReference Include="..\..\..\SpotifyAPI.Web\SpotifyAPI.Web.csproj" />
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<ProjectReference Include="..\..\..\SpotifyAPI.Web.Auth\SpotifyAPI.Web.Auth.csproj" />
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</ItemGroup>
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>netcoreapp3.1</TargetFramework>
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</PropertyGroup>
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</Project>

‎SpotifyAPI.Web.Examples/Example.TokenSwap/Client/Program.cs‎

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using System;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using SpotifyAPI.Web;
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using SpotifyAPI.Web.Auth;
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namespace Client
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{
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public class Program
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{
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private static readonly string clientId = Environment.GetEnvironmentVariable("SPOTIFY_CLIENT_ID");
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private static EmbedIOAuthServer _server;
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public static async Task Main(string[] args)
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{
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_server = new EmbedIOAuthServer(new Uri("http://localhost:5000/callback"), 5000);
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await _server.Start();
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_server.AuthorizationCodeReceived += OnAuthorizationCodeReceived;
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var request = new LoginRequest(_server.BaseUri, clientId, LoginRequest.ResponseType.Code)
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{
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Scope = new List<string> { Scopes.UserReadEmail }
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};
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Uri uri = request.ToUri();
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try
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{
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BrowserUtil.Open(uri);
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}
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catch (Exception)
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{
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Console.WriteLine("Unable to open URL, manually open: {0}", uri);
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}
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Console.ReadKey();
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}
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private static async Task OnAuthorizationCodeReceived(object sender, AuthorizationCodeResponse response)
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{
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var oauth = new OAuthClient();
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var tokenRequest = new TokenSwapTokenRequest(new Uri("http://localhost:5001/swap"), response.Code);
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var tokenResponse = await oauth.RequestToken(tokenRequest);
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Console.WriteLine($"We got an access token from server: {tokenResponse.AccessToken}");
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var refreshRequest = new TokenSwapRefreshRequest(
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new Uri("http://localhost:5001/refresh"),
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tokenResponse.RefreshToken
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);
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var refreshResponse = await oauth.RequestToken(refreshRequest);
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Console.WriteLine($"We got a new refreshed access token from server: {refreshResponse.AccessToken}");
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}
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}
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}

‎SpotifyAPI.Web.Examples/Example.TokenSwap/Server/.gitignore‎

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node_modules/

‎SpotifyAPI.Web.Examples/Example.TokenSwap/Server/index.js‎

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const express = require('express');
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const bodyParser = require('body-parser');
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const axios = require('axios');
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const { default: Axios } = require('axios');
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const PORT = process.env.PORT || '5001';
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const SPOTIFY_CLIENT_SECRET = process.env.SPOTIFY_CLIENT_SECRET;
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const SPOTIFY_CLIENT_ID = process.env.SPOTIFY_CLIENT_ID;
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if (!SPOTIFY_CLIENT_SECRET || !SPOTIFY_CLIENT_ID) {
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console.log("SPOTIFY_CLIENT_SECRET or SPOTIFY_CLIENT_ID environment variable is not set!");
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process.exit(1);
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}
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const app = express();
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app.use(bodyParser.urlencoded({ extended: true }));
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app.post('/swap', async (req, res) => {
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const { code } = req.body;
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const params = new URLSearchParams();
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params.append('grant_type', 'authorization_code');
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params.append('code', code);
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params.append('redirect_uri', 'http://localhost:5000/callback');
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params.append('client_secret', SPOTIFY_CLIENT_SECRET);
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params.append('client_id', SPOTIFY_CLIENT_ID);
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const { data } = await Axios.post('https://accounts.spotify.com/api/token', params);
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return res.send(data);
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});
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app.post('/refresh', async (req, res) => {
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const { refresh_token } = req.body;
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const params = new URLSearchParams();
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params.append('grant_type', 'refresh_token');
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params.append('refresh_token', refresh_token);
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params.append('client_secret', SPOTIFY_CLIENT_SECRET);
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params.append('client_id', SPOTIFY_CLIENT_ID);
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const { data } = await Axios.post('https://accounts.spotify.com/api/token', params);
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return res.send(data);
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});
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app.listen(PORT, () => {
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console.log(`Server listening on ${PORT} 🚀`);
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});

‎SpotifyAPI.Web.Examples/Example.TokenSwap/Server/package.json‎

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{
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"name": "Server",
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"version": "1.0.0",
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"main": "index.js",
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"license": "MIT",
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"scripts": {
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"start": "node index.js"
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},
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"dependencies": {
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"axios": "^0.19.2",
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"body-parser": "^1.19.0",
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"express": "^4.17.1"
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}
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}

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