public string AddMessage(AddMessageArgs args)
{
Dictionary<string, object> results = new Dictionary<string, object>();
byte[] imageData = null;
string imageName = args.message.imageName;
if (!String.IsNullOrEmpty(args.imageData)) {
imageData = Convert.FromBase64String(args.imageData);
}
try {
List<PTMessage> messages = new List<PTMessage>();
// Add text
if (!String.IsNullOrEmpty(args.message.text)) {
args.message.type = "Text";
PTMessage message = PTDatabase.AddMessage(args.message, null);
message.imageName = null;
if (message != null)
messages.Add(message);
}
// Add image
if (imageData != null) {
PTMessage imageMessage = new PTMessage();
imageMessage.senderID = args.message.senderID;
imageMessage.protocolID = args.message.protocolID;
imageMessage.timestamp = args.message.timestamp;
imageMessage.imageName = imageName;
imageMessage.exerciseID = args.message.exerciseID;
imageMessage.type = "Image";
imageMessage.text = null;
imageMessage = PTDatabase.AddMessage(imageMessage, imageData);
if (imageMessage != null)
messages.Add(imageMessage);
}
if (imageData != null) {
string path = PTDatabase.PathForImageNamed(imageName, false);
System.IO.File.WriteAllBytes(path, imageData);
}
if (messages.Count == 0) {
results["error"] = "Error adding message to the database.";
} else {
results["messages"] = messages;
}
} catch (Exception e) {
results["error"] = e.Message;
}
return s.Serialize(results);
}
public static PTMessage AddMessage(PTMessage message, byte[] imageData)
{
try
{
// add the message to the db, set message.ID, and return the message
//TODO: default return values
//TODO: handle video...
using (PTLinkDatabaseDataContext db = new PTLinkDatabaseDataContext())
{
Message dbMessage = new Message();
dbMessage.ContentTypeId = (from c in db.ContentTypes
where c.Name == message.type
select c.Id).SingleOrDefault();
dbMessage.ExerciseId = message.exerciseID;
dbMessage.PersonId = message.senderID;
dbMessage.ProtocolId = message.protocolID;
dbMessage.Timestamp = (long)message.timestamp;
if (imageData != null)
{
//TODO: handle images and video and such
dbMessage.Value = message.imageName;
}
else
{
dbMessage.Value = message.text;
}
db.Messages.InsertOnSubmit(dbMessage);
db.SubmitChanges();
message.ID = dbMessage.Id;
}
return message;
}
catch
{
return null;
}
}
public static List<PTMessage> GetMessages(int protocolID, int afterTime)
{
try
{
//Gets all messages for either a doctor or a patient (see following TODOs)
//If you pass an afterTime of 0, it will get the last 30 messages
//Otherwise, it gets however many messages were sent after afterTime
//TODO: this really doesn't work in the long run, need a protocol id as well, hence first or default
//TODO: also, this is assuming there's a one-to-one patient-doctor relationship which is totally false
using (PTLinkDatabaseDataContext db = new PTLinkDatabaseDataContext())
{
List<PTMessage> messages = new List<PTMessage>();
PTMessage message;
var dbMessages = (from p in db.Protocols
where p.Id == protocolID
select p).FirstOrDefault().Messages.Where(l => l.Timestamp > afterTime);
if (dbMessages != null)
{
//if afterTime is 0, only grab the last 30 messages
if (afterTime == 0)
{
dbMessages = dbMessages.OrderBy(l => l.Timestamp).Take(30);
}
foreach (Message dbMessage in dbMessages)
{
message = new PTMessage();
if (dbMessage.ExerciseId.HasValue)
{
message.exerciseID = dbMessage.ExerciseId.Value;
}
message.ID = dbMessage.Id;
message.protocolID = dbMessage.ProtocolId;
message.senderID = dbMessage.PersonId;
message.timestamp = dbMessage.Timestamp;
if (dbMessage.ContentType.Name == "Text")
{
message.text = dbMessage.Value;
}
else if (dbMessage.ContentType.Name == "Image")
{
//TODO: handle images
message.imageName = dbMessage.Value;
}
//TODO: handle video
message.type = dbMessage.ContentType.Name;
messages.Add(message);
}
}
return messages;
}
}
catch
{
return null;
}
}
public string SendMessage(PatientArgs args)
{
Dictionary<string, object> results = new Dictionary<string, object>();
PTDoctor d = PTDatabase.GetDoctor(args.authentication.email, args.authentication.password);
PTMessage message;
if (d == null)
{
results["error"] = "Invalid username or password";
}
else if (args.patientID.HasValue)
{
//TODO: this should be reworked
PTMessage messageArg = new PTMessage();
PTProtocol tempProtocol = PTDatabase.GetProtocolsForPatient(args.patientID.Value).FirstOrDefault();
messageArg.protocolID = tempProtocol.ID;
messageArg.exerciseID = tempProtocol.exercises.First().ID;
messageArg.senderID = d.ID;
messageArg.text = args.message;
messageArg.timestamp = args.lastTime.Value;
messageArg.type = "Text";
message = PTDatabase.AddMessage(messageArg, null);
if (message != null)
{
//TODO: check if is empty what it returns
//TODO: should it return message
//TODO: need to handle images
results["message"] = message;
}
else
{
results["error"] = "Error adding message to the database.";
}
}
else
{
results["error"] = "No such patient for this doctor.";
}
return new JavaScriptSerializer().Serialize(results);
}