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