import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
import { TranslateLoader } from '@ngx-translate/core';
import { Observable } from 'rxjs/Observable';

import {
    GeneralBrandService,
} from './../../../helpers/services/index';

@Injectable()
export default class TranslateBrandingLoaderService implements TranslateLoader {
    constructor(
        private _http: Http,
        private _brandService: GeneralBrandService,
    ) {}

    public getTranslation(lang: string): Observable<any> {
        const brandSettings = this._brandService.getBrandSettings();
        const urlOfTranslations =
            brandSettings.alternativeTranslations &&
            brandSettings.alternativeTranslations[lang]
            ?
            brandSettings.alternativeTranslations[lang]
            :
            `../assets/translations/${lang}.json`;
        return this._http.get(
            urlOfTranslations,
        ).map((res) => res.json());
    }
}