Class LocalTimeValue

packages/graph/src/TemporalTypes.ts:194–311

 * - nanosecond: Nanoseconds (0-999999999)
 */
export class LocalTimeValue implements TemporalValue {
  public readonly temporalType = "localtime";

  #hour: number;
  #minute: number;
  #second: number;
  #nanosecond: number;

  public constructor(hour: number, minute: number, second: number, nanosecond: number = 0) {
    this.#hour = hour;
    this.#minute = minute;
    this.#second = second;
    this.#nanosecond = nanosecond;
  }

  /**
   * Create a LocalTimeValue from an ISO time string (HH:MM:SS.nnnnnnnnn).
   */
  public static fromString(iso: string): LocalTimeValue | null {
    // Match time format: HH:MM:SS or HH:MM:SS.fractional
    const match = iso.match(/^(\d{2}):(\d{2}):(\d{2})(?:\.(\d{1,9}))?$/);
    if (!match || !match[1] || !match[2] || !match[3]) return null;

    const hour = parseInt(match[1], 10);
    const minute = parseInt(match[2], 10);
    const second = parseInt(match[3], 10);

    // Parse fractional seconds as nanoseconds
    let nanosecond = 0;
    if (match[4]) {
      // Pad to 9 digits
      const frac = match[4].padEnd(9, "0");
      nanosecond = parseInt(frac, 10);
    }

    return new LocalTimeValue(hour, minute, second, nanosecond);
  }

  /**
   * Create a LocalTimeValue from a map of components.
   */
  public static fromMap(map: Record<string, unknown>): LocalTimeValue | null {
    const hour = typeof map.hour === "number" ? map.hour : 0;
    const minute = typeof map.minute === "number" ? map.minute : 0;
    const second = typeof map.second === "number" ? map.second : 0;
    const nanosecond = typeof map.nanosecond === "number" ? map.nanosecond : 0;

    return new LocalTimeValue(hour, minute, second, nanosecond);
  }

  public get hour(): number {
    return this.#hour;
  }

  public get minute(): number {
    return this.#minute;
  }