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package com.github.scribejava.apis.examples;
import java.util.Random;
import java.util.Scanner;
import com.github.scribejava.apis.GoogleApi20;
import com.github.scribejava.core.builder.ServiceBuilder;
import com.github.scribejava.core.model.OAuth2AccessToken;
import com.github.scribejava.core.model.OAuthRequest;
import com.github.scribejava.core.model.Response;
import com.github.scribejava.core.model.Verb;
import com.github.scribejava.core.oauth.OAuth20Service;
import com.github.scribejava.httpclient.armeria.ArmeriaHttpClientConfig;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
public class Google20ArmeriaExample {
private static final String NETWORK_NAME = "Google Armeria";
private static final String PROTECTED_RESOURCE_URL = "https://www.googleapis.com/oauth2/v3/userinfo";
private Google20ArmeriaExample() {
}
@SuppressWarnings("PMD.SystemPrintln")
public static void main(String... args) throws InterruptedException, ExecutionException, IOException {
// Replace these with your client id and secret
final String clientId = "your client id";
final String clientSecret = "your client secret";
final String secretState = "secret" + new Random().nextInt(999_999);
try (OAuth20Service service = new ServiceBuilder(clientId)
.apiSecret(clientSecret)
.defaultScope("profile") // replace with desired scope
.callback("http://example.com/callback")
.httpClientConfig(ArmeriaHttpClientConfig.defaultConfig())
.build(GoogleApi20.instance())) {
final Scanner in = new Scanner(System.in, "UTF-8");
System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
System.out.println();
// Obtain the Authorization URL
System.out.println("Fetching the Authorization URL...");
//pass access_type=offline to get refresh token
//https://developers.google.com/identity/protocols/OAuth2WebServer#preparing-to-start-the-oauth-20-flow
final Map<String, String> additionalParams = new HashMap<>();
additionalParams.put("access_type", "offline");
//force to reget refresh token (if user are asked not the first time)
additionalParams.put("prompt", "consent");
final String authorizationUrl = service.createAuthorizationUrlBuilder()
.state(secretState)
.additionalParams(additionalParams)
.build();
System.out.println("Got the Authorization URL!");
System.out.println("Now go and authorize ScribeJava here:");
System.out.println(authorizationUrl);
System.out.println("And paste the authorization code here");
System.out.print(">>");
final String code = in.nextLine();
System.out.println();
System.out.println("And paste the state from server here. We have set 'secretState'='"
+ secretState + "'.");
System.out.print(">>");
final String value = in.nextLine();
if (secretState.equals(value)) {
System.out.println("State value does match!");
} else {
System.out.println("Ooops, state value does not match!");
System.out.println("Expected = " + secretState);
System.out.println("Got = " + value);
System.out.println();
}
System.out.println("Trading the Authorization Code for an Access Token...");
OAuth2AccessToken accessToken = service.getAccessToken(code);
System.out.println("Got the Access Token!");
System.out.println("(The raw response looks like this: " + accessToken.getRawResponse()
+ "')");
System.out.println("Refreshing the Access Token...");
accessToken = service.refreshAccessToken(accessToken.getRefreshToken());
System.out.println("Refreshed the Access Token!");
System.out.println("(The raw response looks like this: " + accessToken.getRawResponse()
+ "')");
System.out.println();
// Now let's go and ask for a protected resource!
System.out.println("Now we're going to access a protected resource...");
while (true) {
System.out.println("Paste fieldnames to fetch (leave empty to get profile, 'exit' to stop example)");
System.out.print(">>");
final String query = in.nextLine();
System.out.println();
final String requestUrl;
if ("exit".equals(query)) {
break;
} else if (query == null || query.isEmpty()) {
requestUrl = PROTECTED_RESOURCE_URL;
} else {
requestUrl = PROTECTED_RESOURCE_URL + "?fields=" + query;
}
final OAuthRequest request = new OAuthRequest(Verb.GET, requestUrl);
service.signRequest(accessToken, request);
System.out.println();
try (Response response = service.execute(request)) {
System.out.println(response.getCode());
System.out.println(response.getBody());
}
System.out.println();
}
}
}
}