private async Task <string> fetchPatientId(string user)
{
String s = String.Format("MATCH (a:patient) WHERE a.username='******' RETURN id(a)", user);
queryObject query1 = new queryObject(s);
string[] results = new string[10];
// TODO: Authorisation check
string output = await query1.cypherPOST(sharedClient);
Debug.WriteLine(output);
query1.parseFromData(output, new string[] { "data" }, out results, true);
return(results[0]);
}
private async Task <string[]> downloadPrivateKeys(string user, string id)
{
String s = String.Format("MATCH (a:doctor) WHERE a.username='******' RETURN a", user);
queryObject query1 = new queryObject(s);
string[] results = new string[10];
// TODO: Authorisation check
string output = await query1.cypherPOST(sharedClient);
Debug.WriteLine(output);
query1.parseFromData(output, new string[] { "privateKey", String.Format("keyfor{0}", id) }, out results);
return(results);
}
private async Task <string[]> saltHashPrivate(string user)
{
String s = String.Format("MATCH(a:doctor) WHERE a.username = \"{0}\" RETURN a", user);
queryObject query1 = new queryObject(s);
string[] results = new string[10];
if (authorised)
{
string output = await query1.cypherPOST(client);
query1.parseFromData(output, new string[] { "salt", "password", "privateKey" }, out results);
Debug.WriteLine(output);
return(results);
}
return(results);
}
async Task <List <MeasurementPoint> > fetchMeasurements()
{
string preQuery = String.Format("MATCH(a:patient) -[ :belongs]->(b:measurement) WHERE a.username = \"{0}\" RETURN b", userBeingTreated);
queryObject uploadQuery = new queryObject(preQuery);
string output = await uploadQuery.cypherPOST(sharedClient);
Debug.WriteLine(output);
// Parsing
JsonObject value = JsonObject.Parse(output);
IJsonValue j, k, m, l;
value.TryGetValue("data", out j);
JsonArray value2 = j.GetArray();
// In case the search does not return any results, this array will be empty
List <MeasurementPoint> measurementList = new List <MeasurementPoint> {
};
if (value2.Count != 0) // Given there are results
{
for (int i = 0; i < value2.Count; i++)
{
JsonArray value3 = value2[i].GetArray();
JsonObject object2 = value3[0].GetObject();
object2.TryGetValue("data", out k);
JsonObject object3 = k.GetObject();
object3.TryGetValue("date", out m);
string measurementDate = m.GetString();
string fmt = "dd/MM/yyyy HH:mm:ss"; // Format of the date
DateTime mesDateTime = DateTime.ParseExact(measurementDate, fmt, null);
object3.TryGetValue("value", out l);
string measurementValue = l.GetString();
MeasurementPoint currentMeasurement = new MeasurementPoint {
date = mesDateTime, value = Convert.ToDouble(measurementValue)
};
measurementList.Add(currentMeasurement);
}
}
// Sort
measurementList.OrderBy(mes => mes.date);
return(measurementList);
}
private async void button4_Click(object sender, RoutedEventArgs e)
{
// Upload voltammetry data which is in textbox
Debug.WriteLine(textBox4.Text);
// textBlock2_Copy.Text = String.Format("You are currently treating {0}.", patientDialog.patientToTreat)
// Commented out for not uploading
DateTime localDate = DateTime.Now;
string dateNow = localDate.ToString(new CultureInfo("en-GB")); // display date in DATE-TIME Format
Debug.WriteLine(dateNow);
string preQuery = "MATCH (b:patient) WHERE b.username = \"";
preQuery += userBeingTreated; // replace with username
preQuery += "\" CREATE(b)-[: belongs]->(a: measurement{ type:\"histamine\", value: \"";
preQuery += textBox4.Text;
preQuery += "\", date: \"";
preQuery += dateNow;
preQuery += "\"";
preQuery += "}) RETURN b";
queryObject uploadQuery = new queryObject(preQuery);
string output = await uploadQuery.cypherPOST(sharedClient);
}
private async void LoginLoad()
{
// Login screen
ContentDialog1 signInDialog = new ContentDialog1();
Debug.WriteLine("login");
await signInDialog.ShowAsync();
Debug.WriteLine("login shows");
// Because it is statically allocated all the instances of content dialog share it, thus it only makes sense to access the property from the type itself
var client = ContentDialog1.client;
sharedClient = client;
// Patient list request
//Debug.WriteLine(signInDialog.username);
string preQuery = String.Format("MATCH (a:doctor)-[: treat]->(b:patient) WHERE a.username = \"{0}\" RETURN b", signInDialog.username);
// Preparing a JSON query
queryObject query1 = new queryObject(preQuery);
string output = await query1.cypherPOST(client);
// Deserialization of data
JsonObject value = JsonObject.Parse(output);
IJsonValue j, k, m;
value.TryGetValue("data", out j);
JsonArray value2 = j.GetArray();
// In case the search does not return any results, this array will be empty
List <PatientSheet> patientList = new List <PatientSheet> {
}; // Meaning it will be empty if zero found
if (value2.Count != 0) // If there are patients
{
for (int i = 0; i < value2.Count; i++)
{
JsonArray value3 = value2[i].GetArray();
JsonObject object2 = value3[0].GetObject();
object2.TryGetValue("data", out k);
JsonObject object3 = k.GetObject();
// Switching it to name
object3.TryGetValue("username", out m);
string username = m.GetString();
string id = await fetchPatientId(username); // patients user
Debug.WriteLine(id);
string[] keys = await downloadPrivateKeys(signInDialog.username, id); // doctors user
Debug.WriteLine(keys[0]);
string decryptedDoctorPrivate = keyGenerator.Decrypt(keys[0], signInDialog.password);
Debug.WriteLine(keys[1]);
// Patient's private key is decrypted. It can be decrypted by doctor's private key, but only in pieces.
// Partition string by _
string[] splitKeys = keys[1].Split('_');
string combinedKey = "";
foreach (string splittedKey in splitKeys)
{
if (splittedKey.Length > 0)
{
string decryptedKeyPart;
Debug.Write("encrypted:");
Debug.WriteLine(splittedKey);
keyGenerator.AsymmetricDecrypt(decryptedDoctorPrivate, splittedKey, out decryptedKeyPart);
Debug.Write("decrypted:");
Debug.WriteLine(decryptedKeyPart);
combinedKey += decryptedKeyPart;
}
}
Debug.WriteLine(combinedKey);
// Combined key is patient's private key, with those we can decrypt the other relevant data
string dob;
object3.TryGetValue("dob", out m);
keyGenerator.AsymmetricDecrypt(combinedKey, m.GetString(), out dob);
Debug.WriteLine(dob);
string name;
object3.TryGetValue("name", out m);
keyGenerator.AsymmetricDecrypt(combinedKey, m.GetString(), out name);
Debug.WriteLine(name);
PatientSheet patientItem = new PatientSheet {
patientName = name, patientDOB = dob, patientUser = username
};
patientList.Add(patientItem);
}
}
ContentDialog2 patientDialog = new ContentDialog2(signInDialog.username);
patientDialog.patientList = patientList; // You could make patientlist private if you do an initaliser for it
await patientDialog.ShowAsync();
commandBar.Text = String.Format("Currently treating {0}.", patientDialog.patientDisplayName);
this.userBeingTreated = patientDialog.patientToTreat;
this.doctor = signInDialog.username;
// When everything is done, load the patient measurement data into the plot
List <MeasurementPoint> mes = await fetchMeasurements();
Debug.Write("mes:");
Debug.WriteLine(mes.Count);
if (mes.Count != 0)
{
updatePatientPlot(mes);
}
}
