trying to make email work but not yet working

app/nbproject/project.properties

@@ -31,6 +31,7 @@ endorsed.classpath=
 excludes=
 file.reference.bluecove-2.1.1-SNAPSHOT.jar=bluecove-2.1.1-SNAPSHOT.jar
 file.reference.javax.mail-api-1.4.7.jar=javax.mail-api-1.4.7.jar
+file.reference.javax.mail.jar-1=javax.mail.jar
 includes=**
 # Non-JavaFX jar file creation is deactivated in JavaFX 2.0+ projects
 jar.archive.disabled=true
@@ -38,7 +39,8 @@ jar.compress=false
 javac.classpath=\
     ${javafx.classpath.extension}:\
     ${file.reference.bluecove-2.1.1-SNAPSHOT.jar}:\
-    ${file.reference.javax.mail-api-1.4.7.jar}
+    ${file.reference.javax.mail-api-1.4.7.jar}:\
+    ${file.reference.javax.mail.jar-1}
 # Space-separated list of extra javac options
 javac.compilerargs=
 javac.deprecation=false

app/src/MailUtil/MailUtil.java

+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package MailUtil;
+
+import javax.mail.*;
+import javax.mail.internet.*;
+import java.util.*;
+
+/**
+ *
+ * @author lmasson
+ */
+public class MailUtil {
+    private static String USER_NAME = "plantequipleure";  // GMail user name (just the part before "@gmail.com")
+    private static String PASSWORD = "cryingplant12"; // GMail password
+    private static String RECIPIENT = "theo.coulin@gmail.com";
+    
+    public static void sendDistressMail() {
+
+        String from = USER_NAME;
+        String pass = PASSWORD;
+        String subject = "Votre plante pleure";
+
+        sendFromGMail(from, pass, RECIPIENT, subject, "Ta plante pleure arrose-la");
+    }
+
+    private static void sendFromGMail(String from, String pass, String to, String subject, String body) {
+        Properties props = System.getProperties();
+        String host = "smtp.gmail.com";
+        props.put("mail.smtp.starttls.enable", "true");
+        props.put("mail.smtp.host", host);
+        props.put("mail.smtp.user", from);
+        props.put("mail.smtp.password", pass);
+        props.put("mail.smtp.port", "587");
+        props.put("mail.smtp.auth", "true");
+
+        Session session = Session.getDefaultInstance(props);
+        MimeMessage message = new MimeMessage(session);
+
+        try {
+            message.setFrom(new InternetAddress(from));
+            InternetAddress toAddress = new InternetAddress(to);
+
+            message.addRecipient(Message.RecipientType.TO, toAddress);
+
+            message.setSubject(subject);
+            message.setText(body);
+            Transport transport = session.getTransport("smtp");
+            transport.connect(host, from, pass);
+            transport.sendMessage(message, message.getAllRecipients());
+            transport.close();
+        }
+        catch (AddressException ae) {
+            ae.printStackTrace();
+        }
+        catch (MessagingException me) {
+            me.printStackTrace();
+        }
+    }
+    
+}

app/src/Vue/FXMLVueController.java

@@ -9,17 +9,15 @@ import Bluetooth.BluetoothManager;
 import Bluetooth.BluetoothThread;
 import Interfaces.Observable;
 import Interfaces.Observer;
+import MailUtil.MailUtil;
 import Util.CalendarUtil;
 import java.io.IOException;
 import java.net.URL;
-import java.text.NumberFormat;
+import java.time.LocalDate;
+import java.time.Period;
 import java.util.Calendar;
-import java.util.Formatter;
-import java.util.Locale;
 import java.util.ResourceBundle;
 import javafx.application.Platform;
-import javafx.beans.InvalidationListener;
-import javafx.beans.binding.Bindings;
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 import javafx.event.ActionEvent;
@@ -35,11 +33,14 @@ import javafx.scene.control.ComboBox;
 import javafx.scene.control.Label;
 import javafx.scene.control.RadioButton;
 import javafx.scene.control.Slider;
-import javafx.scene.control.TextField;
 import javafx.scene.control.ToggleGroup;
 import javafx.scene.layout.GridPane;
 import javafx.scene.layout.HBox;
 
+import javax.mail.*;
+import javax.mail.internet.*;
+import java.util.*;
+
 /**
  * FXML Controller class
  *
@@ -112,6 +113,7 @@ public class FXMLVueController implements Initializable, Observer {
     private boolean isConnected = false;
     private BluetoothManager bluetoothManager;
     private BluetoothThread workingThread;
+    LocalDate lastMailDay;
 
     
     /**
@@ -126,6 +128,9 @@ public class FXMLVueController implements Initializable, Observer {
         currentGridPane = accueil;
         currentButton = buttonAccueil;
         openPage(accueil, buttonAccueil);
+        
+        //TODO initialize lastMailDay with database
+        lastMailDay = LocalDate.of(2018, 12, 12);
 
         seuil.valueProperty().addListener(new ChangeListener<Number>() {
             @Override
@@ -163,14 +168,13 @@ public class FXMLVueController implements Initializable, Observer {
             public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
                 System.out.println(oldValue);
                 System.out.println(newValue);
-                if (oldValue != null && newValue != null && humiditySeuil.getText() != null && Integer.parseInt(newValue) < Integer.parseInt(humiditySeuil.getText())) {
+                if (humiditySeuil.getText() != null && Integer.parseInt(newValue) < Integer.parseInt(humiditySeuil.getText())) {
                     changeImagePlante(true);
                     alert = true;
                     if(Integer.parseInt(oldValue) >  Integer.parseInt(humiditySeuil.getText())){
                         work();
                     }
-                }
-                else {
+                } else {
                     if(alert){
                         changeImagePlante(false);
                     }          
@@ -182,7 +186,7 @@ public class FXMLVueController implements Initializable, Observer {
                             tmp = false;              
                         } catch(IOException e){
                             e.printStackTrace();
-                            }    
+                        }    
                     }
                 }
             }        
@@ -218,7 +222,7 @@ public class FXMLVueController implements Initializable, Observer {
     @FXML
     private void clickActivationBluetooth(ActionEvent event) {
         if(!this.isConnected){
-           isConnected =  bluetoothManager.launch();
+           isConnected = bluetoothManager.launch();
         }
         
         if(isConnected){
@@ -307,14 +311,18 @@ public class FXMLVueController implements Initializable, Observer {
     }
     
     private void work(){
+        computeGravity();
         if(CalendarUtil.isBusinessDay(Calendar.getInstance())){
-            System.out.println("is business");
-            // compute & send
-            computeGravity();
+            System.out.println("is business day");
         } else {
-            System.out.println("is not");
-            // send mail, not this
-            computeGravity();
+            System.out.println("is not business day");
+            LocalDate today = LocalDate.now();
+            Period difference = Period.between(lastMailDay, today);
+            if(difference.getDays() > 1){
+                // send mail
+                MailUtil.sendDistressMail();
+                lastMailDay = today;
+            }
         }
     }