Added important admin frontend functions with error handling, the corresponding api endpoints, and the timer logic

scoreboard/controllers/timer.js

@@ -16,26 +16,35 @@ function print() {};
 
 
 function start() {
-    if(isPaused == true)
-    {
-        isPaused = false
+    if(isPaused == true && durationLeft.asSeconds() != 0) {     // Only allow start if timer ist currently paused and durationLeft is not 0 seconds
+        console.log("Timer gestartet")
+        isPaused = false                                        // Set status of the timer
     
         timerInterval = setInterval(() => {                     // Create Intervalfunction every 1000ms
+            durationLeft.subtract(1, 'second');                 // Subtract a second from from the timer
             console.log(print());                               // Print durationLeft
             io.sockets.emit('timerDurationLeft', print())       // Emit durationLeft to all connected sockets
-            if(durationLeft.minutes() == 0 && durationLeft.seconds() == 0)      // End timer if durationLeft == 00:00
+            if(durationLeft.asSeconds() == 0)                   // End timer if durationLeft == 00:00
                 end()
-            durationLeft.subtract(1, 'second');                 // Subtract a second from from the timer
         }, 1000);
-    }
+        return true
+    } else
+        return false
 }
 
 function pause() {
-    isPaused = true;                                // Set status of the timer
-    clearInterval(timerInterval);                   // End the execution
+    if(!isPaused) {
+        console.log("Timer pausiert");
+        isPaused = true;                    // Set status of the timer
+        clearInterval(timerInterval);       // End the execution
+        return true
+    } else
+        return false
 }
 
-function reset() {
+function reset(newDuration) {
+    console.log("Timer Zurückgesetzt");
+    duration = moment.duration(newDuration, 'seconds').clone();     // Set initial duration to received duration in seconds
     durationLeft = duration.clone();                // Set durationLeft to the initial duration
     io.sockets.emit('timerDurationLeft', print())   // Emit durationLeft to all connected sockets
 }
@@ -46,8 +55,7 @@ function end() {
     io.sockets.emit('timerEnded', print())          // Emit end to all connected sockets
 }
 
-function print()
-{
+function print() {
     var minutes = (durationLeft.minutes() < 10) ? "0" + durationLeft.minutes() : durationLeft.minutes();        // Create leading zeros for numbers <10
     var seconds = (durationLeft.seconds() < 10) ? "0" + durationLeft.seconds() : durationLeft.seconds();        // Create leading zeros for numbers <10
     return minutes + ":" + seconds