import type { Day } from './../enums/day';
import PowerduckState from './../../app/powerduck-state';
import { capitalize } from '../extensions/string-extensions';

export default class DayTranslator {
	private static _dayMap: { [index: string]: string } = null as any;

	static getString(day: Day): string {
		this.initMap();
		return this._dayMap[day];
	}

	private static initMap() {
		if (this._dayMap != null) {
			return;
		}

		this._dayMap = {};
		const locale = PowerduckState.getCurrentLanguage();
		for (let i = 7; i < 15; i++) {
			// eslint-disable-next-line no-restricted-syntax
			const dayDate = new Date(Date.UTC(
				2015,
				5,
				i,
			));
			const dayName = dayDate.toLocaleDateString(locale, { weekday: 'long', timeZone: 'UTC' })[capitalize]();
			const dayEnumName = dayDate.toLocaleDateString('en', { weekday: 'long', timeZone: 'UTC' }).toUpperCase();
			this._dayMap[dayEnumName] = dayName;
		}
	}
}