package com.github.scribejava.apis.examples;

import java.util.Scanner;

import com.github.scribejava.apis.GeniusApi;
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 java.io.IOException;
import java.util.concurrent.ExecutionException;

public final class GeniusExample {

    private static final String NETWORK_NAME = "Genius";
    private static final String PROTECTED_RESOURCE_URL = "https://api.genius.com/songs/378195";

    private GeniusExample() {
    }

    public static void main(String... args) throws IOException, InterruptedException, ExecutionException {
        // Replace these with your client id and secret
        final String clientId = "your client id";
        final String clientSecret = "your client secret";
        final String secretState = "100";
        final OAuth20Service service = new ServiceBuilder()
                .apiKey(clientId)
                .apiSecret(clientSecret)
                .scope("me")
                .state(secretState)
                .callback("com.scribejavatest://callback")
                .userAgent("ScribeJava")
                .build(GeniusApi.instance());

        System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
        System.out.println();

        // Obtain the Authorization URL
        System.out.println("Fetching the Authorization URL...");
        final String authorizationUrl = service.getAuthorizationUrl();
        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;
        final String value;
        try (Scanner in = new Scanner(System.in, "UTF-8")) {
            code = in.nextLine();
            System.out.println();

            System.out.println("And paste the state from server here. We have set 'secretState'='" + secretState
                    + "'.");
            System.out.print(">>");
            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();
        }

        // Trade the Request Token and Verifier for the Access Token
        System.out.println("Trading the Request Token for an Access Token...");
        final OAuth2AccessToken accessToken = service.getAccessToken(code);
        System.out.println("Got the Access Token!");
        System.out.println("(View Access Token contents: " + accessToken
                + ", 'rawResponse'='" + accessToken.getRawResponse() + "')");
        System.out.println();

        // Now let's go and ask for a protected resource!
        System.out.println("Accessing a protected resource...");
        final OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL);
        service.signRequest(accessToken, request);
        final Response response = service.execute(request);
        System.out.println("Got it! Viewing contents...");
        System.out.println();
        System.out.println(response.getCode());
        System.out.println(response.getBody());

        System.out.println();
        System.out.println("Thats it man! Go and build something awesome with ScribeJava! :)");
    }
}
