feat: add TimeOnly class

src/shared/structs/TimeOnly.ts

@@ -0,0 +1,44 @@
+export class TimeOnly {
+
+  private readonly _ticks: number;
+
+  constructor(hour: number, minute: number, second: number);
+  constructor(time: Date);
+  constructor(time: string);
+  constructor(hourOrTime: number | Date | string, minute?: number, second?: number) {
+    if (hourOrTime instanceof Date) {
+      this._ticks = hourOrTime.getTime();
+    } else if (typeof hourOrTime === 'number' && minute !== undefined && second !== undefined) {
+      this._ticks = new Date(2000, 0, 1, hourOrTime, minute, second, 0).getTime()
+    } else if (typeof hourOrTime === 'string') {
+      const [h, m, s] = hourOrTime.split(':').map(Number);
+      this._ticks = new Date(2000, 0, 1, h, m, s, 0).getTime()
+    } else {
+      throw new Error('Invalid constructor arguments');
+    }
+  }
+
+  get minute(): number {
+    return new Date(this._ticks).getMinutes();
+  }
+
+  get hour(): number {
+    return new Date(this._ticks).getHours();
+  }
+
+  get second(): number {
+    return new Date(this._ticks).getSeconds();
+  }
+
+  get localTime(): string {
+    return new Date(this._ticks).toLocaleDateString();
+  }
+
+  toTimeWithoutSeconds(): string {
+    return `${String(this.hour).padStart(2, '0')}:${String(this.minute).padStart(2, '0')}`
+  }
+
+  toString(): string {
+    return `${String(this.hour).padStart(2, '0')}:${String(this.minute).padStart(2, '0')}-${String(this.second).padStart(2, '0')}`;
+  }
+}