wip

packages/racing/domain/value-objects/RaceTimeOfDay.ts

@@ -0,0 +1,34 @@
+export class RaceTimeOfDay {
+  readonly hour: number;
+  readonly minute: number;
+
+  constructor(hour: number, minute: number) {
+    if (!Number.isInteger(hour) || hour < 0 || hour > 23) {
+      throw new Error(`RaceTimeOfDay hour must be between 0 and 23, got ${hour}`);
+    }
+    if (!Number.isInteger(minute) || minute < 0 || minute > 59) {
+      throw new Error(`RaceTimeOfDay minute must be between 0 and 59, got ${minute}`);
+    }
+
+    this.hour = hour;
+    this.minute = minute;
+  }
+
+  static fromString(value: string): RaceTimeOfDay {
+    const match = /^(\d{2}):(\d{2})$/.exec(value);
+    if (!match) {
+      throw new Error(`RaceTimeOfDay string must be in HH:MM 24h format, got "${value}"`);
+    }
+
+    const hour = Number(match[1]);
+    const minute = Number(match[2]);
+
+    return new RaceTimeOfDay(hour, minute);
+  }
+
+  toString(): string {
+    const hh = this.hour.toString().padStart(2, '0');
+    const mm = this.minute.toString().padStart(2, '0');
+    return `${hh}:${mm}`;
+  }
+}