timer routes

packages/shared/src/utils/time-tracking.ts

@@ -0,0 +1,25 @@
+export function isTimerRunning(timestamps: Date[]): boolean {
+    return timestamps.length % 2 === 1;
+}
+
+export function calculateWorkTimeMs(timestamps: Date[]): number {
+    let total = 0;
+    for (let i = 0; i < timestamps.length; i += 2) {
+        const start = timestamps[i];
+        if (!start) break;
+        const end = timestamps[i + 1] || new Date();
+        total += end.getTime() - start.getTime();
+    }
+    return total;
+}
+
+export function calculateBreakTimeMs(timestamps: Date[]): number {
+    let total = 0;
+    for (let i = 1; i < timestamps.length - 1; i += 2) {
+        const start = timestamps[i];
+        const end = timestamps[i + 1];
+        if (!start || !end) break;
+        total += end.getTime() - start.getTime();
+    }
+    return total;
+}