package de.jeyp91.googlecalendar;

import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.calendar.CalendarScopes;
import com.google.api.services.calendar.Calendar;

import java.io.*;
import java.util.Collections;
import java.util.List;

public class GoogleCalendarConnector {
    private static final String APPLICATION_NAME = "Google Calendar API Java Quickstart";
    private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();

    /**
     * Global instance of the scopes required by this quickstart.
     * If modifying these scopes, delete your previously saved tokens/ folder.
     */
    private static final String SERVICE_CREDENTIALS_FILE_PATH = "/tippliga-4e0def9ef447.json";

    /**
     * Creates an authorized Credential object.
     * @return An authorized Credential object.
     * @throws IOException If the Google_Credentials.json file cannot be found.
     */
    private static GoogleCredential getCredentials() throws IOException {
        InputStream in = GoogleCalendarConnector.class.getResourceAsStream(SERVICE_CREDENTIALS_FILE_PATH);
        return GoogleCredential.fromStream(in)
                .createScoped(Collections.singleton(CalendarScopes.CALENDAR));
    }

    public static com.google.api.services.calendar.Calendar getSerivce() {

        com.google.api.services.calendar.Calendar service = null;

        final NetHttpTransport HTTP_TRANSPORT;
        try {
            HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
            service = new Calendar.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials())
                    .setApplicationName(APPLICATION_NAME)
                    .build();

        } catch (Exception e) {
            e.printStackTrace();
        }
        return service;
    }
}