package com.xiangyixie.picshouse.service;

import android.app.IntentService;
import android.content.Intent;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;

import com.google.android.gms.gcm.GoogleCloudMessaging;
import com.google.android.gms.iid.InstanceID;
import com.xiangyixie.picshouse.AppConfig;
import com.xiangyixie.picshouse.R;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;


/**
 * An {@link IntentService} subclass for handling asynchronous task requests in
 * a service on a separate handler thread.
 * <p/>
 * TODO: Customize class - update intent actions and extra parameters.
 */
public class NotificationRegistrationService extends IntentService {
    private final static String TAG = "NotifyRegService";
    public final static String REGISTRATION_COMPLETE = "RegisterComplete";
    public NotificationRegistrationService() {
        super(TAG);
    }

    @Override
    protected void onHandleIntent(Intent intent) {

        Log.d(TAG, "handle intent " + intent);
        boolean success = false;
        try {
            // [START register_for_gcm]
            // Initially this call goes out to the network to retrieve the token, subsequent calls
            // are local.
            // R.string.gcm_defaultSenderId (the Sender ID) is typically derived from google-services.json.
            // See https://developers.google.com/cloud-messaging/android/start for details on this file.
            // [START get_token]
            InstanceID instanceID = InstanceID.getInstance(this);
            String token = instanceID.getToken(getString(R.string.gcm_defaultSenderId),
                    GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);
            // [END get_token]
            Log.i(TAG, "GCM Registration Token: " + token);

            // TODO: Implement this method to send any registration to your app's servers.
            success = sendRegistrationToServer(token);

            // Subscribe to topic channels
            // subscribeTopics(token);

            // You should store a boolean that indicates whether the generated token has been
            // sent to your server. If the boolean is false, send the token to your server,
            // otherwise your server should have already received the token.
            //sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, true).apply();
            // [END register_for_gcm]
        } catch (Exception e) {
            Log.d(TAG, "Failed to complete token refresh", e);
            // If an exception happens while fetching the new token or updating our registration data
            // on a third-party server, this ensures that we'll attempt the update at a later time.
            //sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, false).apply();
        }
        // Notify UI that registration has completed, so the progress indicator can be hidden.
        Intent registrationComplete = new Intent(REGISTRATION_COMPLETE);
        registrationComplete.putExtra("STATUS", success);
        LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete);
    }

    /**
     * Persist registration to third-party servers.
     *
     * Modify this method to associate the user's GCM registration token with any server-side account
     * maintained by your application.
     *
     * @param token The new token.
     */
    private boolean sendRegistrationToServer(String token) {
        Log.d(TAG, "send token to server " + token);
        try {
            URL server = new URL("https://" + AppConfig.NOTIFY_SERVER + "/register");
            HttpURLConnection connection = (HttpURLConnection) server.openConnection();
            connection.setRequestMethod("POST");
            connection.setDoOutput(true);

            OutputStream out = connection.getOutputStream();
            String data = "token=" + token;
            out.write(data.getBytes());

            int code = connection.getResponseCode();

            boolean success = code < 400 && code >= 200;

            InputStream in = success ? connection.getInputStream() : connection.getErrorStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(in));

            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line).append('\n');
            }

            Log.d(TAG, "get response (" + code + ") " + sb.toString());

            return success;
        } catch (ProtocolException e) {
            e.printStackTrace();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return false;
    }
}