import { Injectable, Inject, Injector } from '@angular/core';
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import { Router } from '@angular/router';
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import { zhCN, enUS, NzLocaleService } from 'ng-zorro-antd';
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import { TranslateService } from '@ngx-translate/core';
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import { SettingsService, AlainI18NService } from '@delon/theme';
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import { Observable } from 'rxjs/Observable';
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@Injectable()
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export class I18NService implements AlainI18NService {
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private _default = 'zh-CN';
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private _langs = [
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{ code: 'en', text: 'English' },
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{ code: 'zh-CN', text: '中文' }
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];
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constructor(
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settings: SettingsService,
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private nzLocalService: NzLocaleService,
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private translate: TranslateService,
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private injector: Injector
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) {
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this._default = settings.layout.lang || translate.getBrowserLang();
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const lans = this._langs.map(item => item.code);
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if (!lans.includes(this._default)) {
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this._default = lans[0];
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}
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translate.addLangs(lans);
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}
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use(lang: string = null, firstLoad = true): Observable<any> {
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lang = lang || this.translate.getDefaultLang();
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this.nzLocalService.setLocale(lang === 'en' ? enUS : zhCN);
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// need reload router because of ng-zorro-antd local system
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if (!firstLoad) this.injector.get(Router).navigate([ '/' ]);
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return this.translate.use(lang);
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}
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/** 获取语言列表 */
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getLangs() {
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return this._langs;
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}
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/** 翻译 */
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fanyi(key: string) {
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return this.translate.instant(key);
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}
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/** 默认语言 */
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get defaultLang() {
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return this._default;
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}
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/** 当前语言 */
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get currentLang() {
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return this.translate.currentLang || this.translate.getDefaultLang() || this._default;
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}
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}
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