1 files changed, 30 insertions, 0 deletions
diff --git a/frontend/ts/timer.ts b/frontend/ts/timer.ts
new file mode 100644
index 0000000..f8dab25
--- /dev/null
+++ b/frontend/ts/timer.ts
@@ -0,0 +1,30 @@
+export default class Timer {
+    divTimer!: HTMLElement;
+
+    interval!: any;
+    async start(playerIndex: number, finishTime: number): Promise<void> {
+        return new Promise(resolve => {
+            let divTimer = document.getElementById(`${playerIndex}-player-time`);
+            if (divTimer === null)
+                throw new Error("divTimer doesn't Exist");
+            else
+                this.divTimer = divTimer;
+
+            this.interval = setInterval(() => {
+                this.updateDisplay(finishTime - Date.now(), resolve);
+            }, 1000);
+        })
+    }
+
+    updateDisplay(time: number, resolve: Function): void {
+        let secondsElapsed = Math.floor(time / 1000);
+        this.divTimer.innerHTML = secondsElapsed.toString();
+        if (secondsElapsed === 0) {
+            resolve();
+            clearInterval(this.interval);
+        }
+    }
+    stop(): void {
+        clearInterval(this.interval);
+    }
+}
+\ No newline at end of file