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import type { Flattable } from '../types/Flattable';
type UtcDateComponents = {
year: number;
month: number;
day: number;
hour: number;
minute: number;
};
export class UtcDate implements Flattable<UtcDate.Flatten> {
public constructor(
public readonly year: number,
public readonly month: number,
public readonly day: number,
public readonly hour: number,
public readonly minute: number
) {}
public static get now(): UtcDate {
return UtcDate.fromDate(new Date());
}
public get toDate(): Date {
return new Date(Date.UTC(this.year, this.month - 1, this.day, this.hour, this.minute));
}
public get toIsoDate(): string {
return this.toDate.toISOString();
}
public get encoded(): string {
const year = this.year.toString();
const month = this.month <= 9 ? `0${this.month}` : this.month.toString();
const day = this.day <= 9 ? `0${this.day}` : this.day.toString();
const hour = this.hour <= 9 ? `0${this.hour}` : this.hour.toString();
const minute = this.minute <= 9 ? `0${this.minute}` : this.minute.toString();
return `${year}-${month}-${day}-${hour}-${minute}`;
}
public static fromDate(date: Date): UtcDate {
return new UtcDate(date.getUTCFullYear(), date.getUTCMonth() + 1, date.getUTCDate(), date.getUTCHours(), date.getUTCMinutes());
}
public static fromIsoDate(date: string): UtcDate {
return UtcDate.fromDate(new Date(date));
}
public static decode(encodedDate: string): UtcDate {
const regex = /^(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})-(?<hour>\d{2})-(?<minute>\d{2})$/gu;
const match = regex.exec(encodedDate);
if (match?.groups === undefined)
return new UtcDate(0, 0, 0, 0, 0);
return new UtcDate(
Number.parseInt(match.groups.year),
Number.parseInt(match.groups.month),
Number.parseInt(match.groups.day),
Number.parseInt(match.groups.hour),
Number.parseInt(match.groups.minute)
);
}
public setted(components: Partial<UtcDateComponents>): UtcDate {
const date = new Date(Date.UTC(this.year, this.month, this.day, this.hour, this.minute));
date.setUTCFullYear(components.year ?? date.getUTCFullYear());
date.setUTCMonth((components.month ?? date.getUTCMonth()) - 1);
date.setUTCDate(components.day ?? date.getUTCDate());
date.setUTCHours(components.hour ?? date.getUTCHours());
date.setUTCMinutes(components.minute ?? date.getUTCMinutes());
return UtcDate.fromDate(date);
}
public advanced(components: Partial<UtcDateComponents>): UtcDate {
const date = new Date(Date.UTC(this.year, this.month - 1, this.day, this.hour, this.minute));
date.setUTCFullYear(date.getUTCFullYear() + (components.year ?? 0));
date.setUTCMonth(date.getUTCMonth() + (components.month ?? 0));
date.setUTCDate(date.getUTCDate() + (components.day ?? 0));
date.setUTCHours(date.getUTCHours() + (components.hour ?? 0));
date.setUTCMinutes(date.getUTCMinutes() + (components.minute ?? 0));
return UtcDate.fromDate(date);
}
public compare(other: UtcDate): 'less' | 'equal' | 'greater' {
if (this.year < other.year)
return 'less';
else if (this.year > other.year)
return 'greater';
if (this.month < other.month)
return 'less';
else if (this.month > other.month)
return 'greater';
if (this.day < other.day)
return 'less';
else if (this.day > other.day)
return 'greater';
if (this.hour < other.hour)
return 'less';
else if (this.hour > other.hour)
return 'greater';
if (this.minute < other.minute)
return 'less';
else if (this.minute > other.minute)
return 'greater';
return 'equal';
}
public get flatten(): UtcDate.Flatten {
return this.encoded;
}
}
// istanbul ignore next
export namespace UtcDate {
export type Flatten = string;
export class TypeBuilder implements ITypeBuilder<Flatten, UtcDate> {
public build(value: Flatten): UtcDate {
return UtcDate.decode(value);
}
}
export const builder = new TypeBuilder();
}
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