import type { ILocalizedText } from './localized-text';
import PowerduckState from '../app/powerduck-state';
import { Language } from './enums/language';
import { isNullOrEmpty } from './utils/is-null-or-empty';

export default class LocalizedValueHelper {
	static getValue(value: ILocalizedText, lang?: Language | string): string {
		if (value == null) {
			return null as any;
		}

		if (lang == null) {
			lang = PowerduckState.getCurrentLanguage();
		}

		const inLang = value[lang];
		if (inLang != null) {
			return inLang;
		}

		if (lang == Language.cs) {
			const fbLang = value[Language.sk];
			if (fbLang != null) {
				return fbLang;
			}
		}

		if (lang == Language.sk) {
			const fbLang = value[Language.cs];
			if (fbLang != null) {
				return fbLang;
			}
		}

		const enVal = value[Language.en];
		if (enVal != null) {
			return enVal;
		}

		for (const propKey in value) {
			const val = value[propKey];
			if (val?.length > 0) {
				return val;
			}
		}

		return null as any;
	}

	static validateLocalizedValue(locValArr: ILocalizedText): boolean {
		if (isNullOrEmpty(LocalizedValueHelper.getValue(locValArr))) {
			return false;
		}

		return true;
	}
}