public List<ClientData> SearchFriends(ClientData client)
{
List<ClientData> friend;
using (EmergencyDBEntities context = new EmergencyDBEntities())
{
friend = (from c in context.Clients
where c.FirstName.StartsWith(client.FirstName)
select new ClientData { Username = c.Username, FirstName = c.FirstName, LastName = c.LastName, Age = c.Age.Value, Email = c.Email }).ToList<ClientData>();
}
return friend;
}
public List<string> SendSosNotifications(ClientData client)
{
using (EmergencyDBEntities context = new EmergencyDBEntities())
{
string notificationStatus = "";
string notificationChannelStatus = "";
string deviceConnectionStatus = "";
var sender = (from c in context.Clients
where c.Username == client.Username
select c).FirstOrDefault();
var clients = (from f in context.Friendships
join c in context.Clients
on f.FriendID equals c.ClientID
where f.ClientID == sender.ClientID
select c);
foreach (var cl in clients)
{
List<string> uriStrings;
using (EmergencyDBEntities context2 = new EmergencyDBEntities())
{
uriStrings = (from d in context2.Devices
where d.ClientID == cl.ClientID
select d.DeviceUrl).ToList<string>();
}
if (uriStrings.Count != 0)
{
foreach (var uriString in uriStrings)
{
Uri uri = new Uri(uriString);
byte[] payload = new byte[0];
var request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = "POST";
request.ContentType = "text/xml";
payload = GetToastPayload("Emergency", sender.FirstName + " " + sender.LastName);
request.Headers.Add("X-WindowsPhone-Target", "toast");
request.Headers.Add("X-NotificationClass", "2");
request.ContentLength = payload.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(payload, 0, payload.Length);
}
try
{
var response = (HttpWebResponse)request.GetResponse();
notificationStatus = response.Headers["X-NotificationStatus"];
notificationChannelStatus = response.Headers["X-SubscriptionStatus"];
deviceConnectionStatus = response.Headers["X-DeviceConnectionStatus"];
}
catch (Exception ex) { }//return new List<string> { "Device is not connected!", ex.Message }; }
}
}
}
return new List<string> { notificationStatus, notificationChannelStatus, deviceConnectionStatus };
//return new List<string> { "You don't have any friend." };
}
}
public string ClientRegistration(ClientData client, string password)
{
using (EmergencyDBEntities context = new EmergencyDBEntities())
{
if ((from c in context.Clients
where c.Username == client.Username
select c).FirstOrDefault() != null)
{ return "User with current username is already exist. Please choose another username."; }
else if ((from c in context.Clients
where c.Email == client.Email
select c).FirstOrDefault() != null)
{ return "User with current email is already exist. Please enter another email address."; }
else
{
context.Clients.AddObject(new Client { Username = client.Username, Password = password, Email = client.Email, FirstName = client.FirstName, LastName = client.LastName, Age = client.Age });
context.SaveChanges();
return "Your account is successfully registered.";
}
}
}
