using System;
using Google.GData.Calendar;
using Google.GData.Extensions;

namespace AltNetHispano.Agendas.Google
{
    public class GCalendarAdapter : IGCalendarAdapter
    {
        private readonly CalendarService _service;
        private readonly Uri _feedUri;

        public void CreateEvent(string title, DateTime startEvent, DateTime endEvent, string location, string summary)
        {
            var entry = new EventEntry
                            {
                                Title = { Text = title },
                                Content = { Content = summary }
                            };

            var eventLocation = new Where
                                    {
                                        ValueString = location
                                    };

            entry.Locations.Add(eventLocation);

            var eventTime = new When(startEvent, endEvent);
            entry.Times.Add(eventTime);
            
            _service.Insert(_feedUri, entry);
        }

        public void DeleteEvent(DateTime startEvent, DateTime endEvent)
        {
            var myQuery = new EventQuery
                              {
                                  StartTime = startEvent,
                                  EndTime = endEvent,
                                  Uri = _feedUri
                              };

            var myResultsFeed = _service.Query(myQuery);
            if (myResultsFeed.Entries.Count > 0)
                myResultsFeed.Entries[0].Delete();
        }

        public GCalendarAdapter(string applicationName ,string userName, string password, string calendarId)
        {
            _service = new CalendarService(applicationName);
            _service.setUserCredentials(userName, password);
            _feedUri = new Uri("https://www.google.com/calendar/feeds/" + calendarId + "/private/full");
        }
    }
}