refactor: Rewrite to typescript

scheduleRules.ts

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2025 Jakub Žitník
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+// Rules: start and end in 24h format, interval in minutes
+export interface ScheduleRule {
+  start: string;
+  end: string;
+  interval: number;
+}
+
+export const scheduleRules: ScheduleRule[] = [
+  { start: "0:00",  end: "3:00",  interval: 180 },
+  { start: "3:00",  end: "4:00",  interval: 60 },
+  { start: "5:00",  end: "6:00",  interval: 30 },
+  { start: "6:00",  end: "7:30",  interval: 15 },
+  { start: "7:30",  end: "16:00", interval: 5 },
+  { start: "16:00", end: "19:00", interval: 60 },
+  { start: "19:00", end: "0:00",  interval: 180 }
+];
+
+export function toMinutes(timeStr: string): number {
+  const [h, m] = timeStr.split(":").map(Number);
+  return h * 60 + (m || 0);
+}
+
+export function getCurrentInterval(date: Date = new Date()): number | null {
+  const nowMinutes = date.getHours() * 60 + date.getMinutes();
+
+  for (const rule of scheduleRules) {
+    let startMin = toMinutes(rule.start);
+    let endMin   = toMinutes(rule.end === "0:00" ? "24:00" : rule.end);
+
+    // Handle wrap-around midnight
+    if (endMin <= startMin) {
+      if (nowMinutes >= startMin || nowMinutes < endMin) {
+        return rule.interval;
+      }
+    } else {
+      if (nowMinutes >= startMin && nowMinutes < endMin) {
+        return rule.interval;
+      }
+    }
+  }
+
+  return null;
+}