import { HttpClient } from '@angular/common/http';
import {
    Inject,
    Injectable,
} from '@angular/core';
import { TranslateLoader } from '@ngx-translate/core';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';

import {
    BrandSettingsInterface,
} from './../../../models/index';

@Injectable()
export class TranslateBrandingLoaderService implements TranslateLoader {
    constructor(
        private _http: HttpClient,
        @Inject('brandSettings')
        private _brandSettings: BrandSettingsInterface,
        @Inject('cdnUrl')
        private _cdnUrl: string,
    ) {}

    public getTranslation(lang: string): Observable<any> {
        const brandSettings = this._brandSettings;
        const urlOfTranslations =
            brandSettings.alternativeTranslations &&
            brandSettings.alternativeTranslations[lang]
            ?
            brandSettings.alternativeTranslations[lang]
            :
            `${this._cdnUrl}/translations/${lang}.json`;

        return this._http.get(
            urlOfTranslations,
        );
    }
}