Added function that runs periodically to send emails

src/Source.kt

@@ -5,6 +5,7 @@ import javafx.scene.layout.GridPane
 import javafx.scene.text.Font
 import javafx.stage.Stage
 import java.sql.Connection
+import java.util.*
 
 object GUIFont {
 	// val bold           = Font.loadFont("file:resources/fonts/SF-Pro-Text-Bold.otf", 20.0)!!
@@ -40,6 +41,8 @@ lateinit var connection: Connection
 // This is the account that is logged into the account
 lateinit var account: Account
 
+val timer = Timer()
+
 // This is the gridPane that every window uses
 fun grid(): GridPane {
 	val gridPane = GridPane()
@@ -63,6 +66,11 @@ class GUI : Application() {
 		window.title = "Vision"
 		window.show()
 	}
+
+	override fun stop() {
+		timer.cancel()
+		timer.purge()
+	}
 }
 
 fun main(args: Array<String>) {

src/Squeal.kt

@@ -1,3 +1,5 @@
+import java.time.LocalDateTime
+
 // We will be using the user's locally installed database for the purposes
 // of this assignment. The user should already have a MYSQL database
 // created with the name "scheduler"
@@ -100,10 +102,10 @@ fun removeAppointment(appID: Int): String {
 //Sends email to address
 //Returns true for email sent
 //Returns false for email not sent
-fun sendEmail(emailAddress: String, appointmentName: String, startDate: String, username: String): Boolean{
+fun sendEmail(emailAddress: String, appointmentName: String, startDate: LocalDateTime, username: String): Boolean{
 
 	val emailSent = emailAddress == ""//Set to true if email is sent
-	val emailMSG = " Hello, $username \nYou have a/an $appointmentName @ $startDate "//Message String
+	val emailMSG = " Hello, $username \nYou have a/an $appointmentName @ ${startDate.toLocalDate()} ${startDate.toLocalTime()} "//Message String
 	println(emailMSG)
 
 	//TODO actually send message emailMSG and update emailSent

src/Welcome.kt

@@ -6,6 +6,11 @@ import javafx.scene.text.Text
 import javafx.stage.FileChooser
 import javafx.stage.Modality
 import javafx.stage.Stage
+import java.time.Duration
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+import java.util.*
+import kotlin.concurrent.schedule
 
 // Main menu
 object Welcome {
@@ -15,7 +20,7 @@ object Welcome {
 
 	// Specifies different types of stages to appear on top of main window
 	private enum class StageType {
-		CREATE_ACCOUNT, CHANGE_USERNAME, CHANGE_PASSWORD, MODIFY_ACCOUNT, MAKE_APPOINTMENT, CANCEL_APPOINTMENT, CHANGE_APPOINTMENT, SET_COLOR, IMPORT_FILE
+		CREATE_ACCOUNT, CHANGE_USERNAME, CHANGE_PASSWORD, MODIFY_ACCOUNT, MAKE_APPOINTMENT, CHANGE_APPOINTMENT, SET_COLOR, IMPORT_FILE
 	}
 
 	//Class to hold type of Calendar
@@ -73,19 +78,19 @@ object Welcome {
 		menuAccount.items.addAll(createAccount, changeUsername, changePassword, modifyAccount)
 
 		//Open modifyAccount window on menu click
-		val createAppt  = MenuItem("Create Appointment")
-		createAppt.setOnAction {
+		val createApt  = MenuItem("Create Appointment")
+		createApt.setOnAction {
 			changeStage(StageType.MAKE_APPOINTMENT)
 			stage.showAndWait()
 		}
-		menuAppointment.items.addAll(createAppt)
+		menuAppointment.items.addAll(createApt)
 
-		val changeAppt  = MenuItem("Change / Cancel Appointment")
-		changeAppt.setOnAction {
+		val changeApt  = MenuItem("Change / Cancel Appointment")
+		changeApt.setOnAction {
 			changeStage(StageType.CHANGE_APPOINTMENT)
 			stage.showAndWait()
 		}
-		menuAppointment.items.addAll(changeAppt)
+		menuAppointment.items.addAll(changeApt)
 
 		//Create the calendar type menu to the view
 		val setCalendarType = Menu("Set calendar type")
@@ -148,6 +153,25 @@ object Welcome {
 		return Scene(vBox, 300.0, 200.0)
 	}
 
+	init {
+		timer.schedule(1000, 60000) {
+			val emailStatement = connection.createStatement()
+			val emailResult = emailStatement.executeQuery(getAppointments(account.username))
+			var remindersSet = false
+			while (emailResult.next()) {
+				val name = emailResult.getString("title")
+				val start = emailResult.getString("start_date")
+				val reminder = emailResult.getInt("reminder")
+				val startDate = LocalDateTime.parse(start, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))
+				val now = LocalDateTime.now()
+				val minutes = Duration.between(startDate, now).toMinutes()
+				if (minutes < reminder && startDate > now) {
+					remindersSet = sendEmail(account.email, name, startDate, account.username)
+				}
+			}
+		}
+	}
+
 	//This function takes a stage type and executes its corresponding window
 	private fun changeStage(stageType: StageType) {
 		stage.scene = when (stageType) {
@@ -157,7 +181,6 @@ object Welcome {
 			Welcome.StageType.MODIFY_ACCOUNT -> ModifyData.scene
 			Welcome.StageType.MAKE_APPOINTMENT ->  MakeAppointment.scene
 			Welcome.StageType.IMPORT_FILE -> FileExplorer.scene
-			Welcome.StageType.CANCEL_APPOINTMENT -> TODO()
 			Welcome.StageType.CHANGE_APPOINTMENT -> ChangeCancelAppointment.scene
 			Welcome.StageType.SET_COLOR -> TODO() // NOT NEEDED YET, Probably doesn't need to have its own stage
 		}

src/create.sql

@@ -21,6 +21,7 @@ CREATE TABLE Appointments (
   title          VARCHAR(40) NULL,
   start_date     DATETIME    NOT NULL,
   end_date       DATETIME    NOT NULL,
+  reminder       INT         NULL,
   CONSTRAINT appointment_pk PRIMARY KEY (appointment_id)
 );