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//
// Copyright 2011 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
using System;
using System.Text;
using System.Collections;
using Google.GData.Apps;
using Google.GData.Client;
using Google.GData.Calendar;
using Google.GData.Extensions;
using Google.GData.Extensions.Apps;
namespace BookThemAll
{
public class NoAvailableSlotWithinLimitException : Exception
{
}
public class BookThemAllSample
{
protected AppsService apps;
protected CalendarService calendar;
protected static string feedUrl = "https://www.google.com/calendar/feeds/{0}/private/full";
private string admin;
public BookThemAllSample(string domain, string admin, string password)
{
apps = new AppsService(domain, admin, password);
calendar = new CalendarService("BookThemAll");
calendar.setUserCredentials(admin, password);
this.admin = admin;
}
public AtomEntryCollection RetrieveAllGroupMembers(string group)
{
return apps.Groups.RetrieveAllMembers(group).Entries;
}
public bool IsUserAvailable(string user, DateTime datetime)
{
EventQuery query = new EventQuery(string.Format(feedUrl, user));
query.StartTime = datetime;
query.EndTime = datetime + new System.TimeSpan(0, 0, 30, 0);
EventFeed feed = calendar.Query(query);
return feed.Entries.Count == 0;
}
public bool AreUsersAvailable(AtomEntryCollection users, DateTime datetime)
{
foreach (AppsExtendedEntry entry in users)
{
string user = entry.getPropertyValueByName("memberId");
bool isAvailable = IsUserAvailable(user, datetime);
if (!isAvailable)
{
return false;
}
}
return true;
}
public DateTime FindNextAvailableTimeSlot(AtomEntryCollection users, DateTime limit)
{
DateTime nextHour = NextHour();
while (nextHour < limit)
{
if (AreUsersAvailable(users, nextHour))
{
return nextHour;
}
nextHour += new System.TimeSpan(0, 0, 30, 0);
}
throw new NoAvailableSlotWithinLimitException();
}
public DateTime NextHour()
{
DateTime now = DateTime.Now;
return now + new System.TimeSpan(0, 0, 59-now.Minute, 59-now.Second, 1000-now.Millisecond);
}
public EventEntry CreateEvent(string title, DateTime date, AtomEntryCollection users)
{
EventEntry entry = new EventEntry();
entry.Title.Text = title;
entry.Content.Content = title + "Content";
When eventTime = new When(date, date + new System.TimeSpan(0, 0, 30, 0));
entry.Times.Add(eventTime);
foreach (AppsExtendedEntry user in users)
{
string member = user.getPropertyValueByName("memberId");
Who who = new Who();
who.Email = member;
who.Rel = Who.RelType.EVENT_ATTENDEE;
entry.Participants.Add(who);
}
Uri postUri = new Uri(string.Format(feedUrl, admin));
return calendar.Insert(postUri, entry);
}
public DateTime Run(string group)
{
DateTime now = DateTime.Now;
AtomEntryCollection users = RetrieveAllGroupMembers(group);
DateTime nextSlot = FindNextAvailableTimeSlot(users, now + new System.TimeSpan(30, 0, 0, 0));
CreateEvent("Meeting", nextSlot, users);
return nextSlot;
}
static void Main(string[] args)
{
if (args.Length != 4)
{
Console.WriteLine("Usage: BookThemAll <domain> <admin> <password> <group>");
}
else
{
// Workaround Certificate validation errors
System.Net.ServicePointManager.ServerCertificateValidationCallback +=
delegate(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
System.Security.Cryptography.X509Certificates.X509Chain chain,
System.Net.Security.SslPolicyErrors sslPolicyErrors)
{
return true;
};
string domain = args[0];
string admin = args[1];
string password = args[2];
string group = args[3];
BookThemAllSample bookthemall = new BookThemAllSample(domain, admin, password);
Console.WriteLine("Event created at: {0}", bookthemall.Run(group));
}
}
}
}
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