import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;

import okhttp3.OkHttpClient;

import com.pokegoapi.api.PokemonGo;
import com.pokegoapi.auth.GoogleAuthJson;
import com.pokegoapi.auth.GoogleAuthTokenJson;
import com.pokegoapi.auth.GoogleCredentialProvider;
import com.pokegoapi.auth.GoogleCredentialProvider.OnGoogleLoginOAuthCompleteListener;
import com.pokegoapi.exceptions.LoginFailedException;
import com.pokegoapi.exceptions.RemoteServerException;

public class PokeGoHelper implements Runnable {

    OkHttpClient httpClient = new OkHttpClient();
    GoogleAuthTokenJson token;
    String refreshToken;
    Path path = FileSystems.getDefault().getPath("", "refreshToken.txt");

    static public void main(String[] args) {
        (new Thread(new PokeGoHelper())).start();
    }

    public void run() {
        try {
            if (path.toFile().exists())
                readToken();
        } catch (ClassNotFoundException | IOException e) {
            e.printStackTrace();
        }

        if (refreshToken == null) {
            loginPokeGoFirstTime();
        } else {
            loginPokeGo();
        }
    }

    private void readToken() throws IOException, ClassNotFoundException {
        refreshToken = Files.readAllLines(path).get(0);
    }

    private void saveToken() throws IOException {
        Files.write(path, token.getRefreshToken().getBytes());
    }

    private void loginPokeGoFirstTime() {
        try {
            PokemonGo go = new PokemonGo(new GoogleCredentialProvider(
                    httpClient, new OnGoogleLoginOAuthCompleteListener() {

                        @Override
                        public void onTokenIdReceived(GoogleAuthTokenJson arg0) {
                            token = arg0;
                            try {
                                saveToken();
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        }

                        @Override
                        public void onInitialOAuthComplete(GoogleAuthJson arg0) {
                        }
                    }), httpClient);
        } catch (LoginFailedException | RemoteServerException e) {
            e.printStackTrace();
        }
    }

    private void loginPokeGo() {
        try {
            PokemonGo go = new PokemonGo(new GoogleCredentialProvider(
                    httpClient, refreshToken), httpClient);
        } catch (LoginFailedException | RemoteServerException e) {
            e.printStackTrace();
        }
    }

}