import { Component, Inject, OnDestroy, OnInit } from '@angular/core';
import { DOCUMENT } from '@angular/common';
import { Platform } from '@angular/cdk/platform';
import { TranslateService } from '@ngx-translate/core';
import { Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';

import { FuseConfigService } from '@fuse/services/config.service';
import { FuseNavigationService } from '@fuse/components/navigation/navigation.service';
import { FuseSidebarService } from '@fuse/components/sidebar/sidebar.service';
import { FuseSplashScreenService } from '@fuse/services/splash-screen.service';
import { FuseTranslationLoaderService } from '@fuse/services/translation-loader.service';

import { navigation } from 'app/navigation/navigation';
import { locale as navigationEnglish } from 'app/navigation/i18n/en';
import { locale as navigationTurkish } from 'app/navigation/i18n/tr';

@Component({
    selector   : 'app',
    templateUrl: './app.component.html',
    styleUrls  : ['./app.component.scss']
})
export class AppComponent implements OnInit, OnDestroy
{
    fuseConfig: any;
    navigation: any;

    // Private
    private _unsubscribeAll: Subject<any>;

    /**
     * Constructor
     *
     * @param {DOCUMENT} document
     * @param {FuseConfigService} _fuseConfigService
     * @param {FuseNavigationService} _fuseNavigationService
     * @param {FuseSidebarService} _fuseSidebarService
     * @param {FuseSplashScreenService} _fuseSplashScreenService
     * @param {FuseTranslationLoaderService} _fuseTranslationLoaderService
     * @param {Platform} _platform
     * @param {TranslateService} _translateService
     */
    constructor(
        @Inject(DOCUMENT) private document: any,
        private _fuseConfigService: FuseConfigService,
        private _fuseNavigationService: FuseNavigationService,
        private _fuseSidebarService: FuseSidebarService,
        private _fuseSplashScreenService: FuseSplashScreenService,
        private _fuseTranslationLoaderService: FuseTranslationLoaderService,
        private _translateService: TranslateService,
        private _platform: Platform
    )
    {
        // Get default navigation
        this.navigation = navigation;

        // Register the navigation to the service
        this._fuseNavigationService.register('main', this.navigation);

        // Set the main navigation as our current navigation
        this._fuseNavigationService.setCurrentNavigation('main');

        // Add languages
        this._translateService.addLangs(['en', 'tr']);

        // Set the default language
        this._translateService.setDefaultLang('en');

        // Set the navigation translations
        this._fuseTranslationLoaderService.loadTranslations(navigationEnglish, navigationTurkish);

        // Use a language
        this._translateService.use('en');

        /**
         * ------------------------------------------------------------------
         * ngxTranslate Fix Start
         * ------------------------------------------------------------------
         * If you are using a language other than the default one, i.e. Turkish in this case,
         * you may encounter an issue where some of the components are not actually being
         * translated when your app first initialized.
         *
         * This is related to ngxTranslate module and below there is a temporary fix while we
         * are moving the multi language implementation over to the Angular's core language
         * service.
         **/

        // Set the default language to 'en' and then back to 'tr'.
        // '.use' cannot be used here as ngxTranslate won't switch to a language that's already
        // been selected and there is no way to force it, so we overcome the issue by switching
        // the default language back and forth.
        /**
         setTimeout(() => {
            this._translateService.setDefaultLang('en');
            this._translateService.setDefaultLang('tr');
         });
         */

        /**
         * ------------------------------------------------------------------
         * ngxTranslate Fix End
         * ------------------------------------------------------------------
         */

        // Add is-mobile class to the body if the platform is mobile
        if ( this._platform.ANDROID || this._platform.IOS )
        {
            this.document.body.classList.add('is-mobile');
        }

        // Set the private defaults
        this._unsubscribeAll = new Subject();
    }

    // -----------------------------------------------------------------------------------------------------
    // @ Lifecycle hooks
    // -----------------------------------------------------------------------------------------------------

    /**
     * On init
     */
    ngOnInit(): void
    {
        // Subscribe to config changes
        this._fuseConfigService.config
            .pipe(takeUntil(this._unsubscribeAll))
            .subscribe((config) => {
                this.fuseConfig = config;

                if ( this.fuseConfig.layout.width === 'boxed' )
                {
                    this.document.body.classList.add('boxed');
                }
                else
                {
                    this.document.body.classList.remove('boxed');
                }
            });
    }

    /**
     * On destroy
     */
    ngOnDestroy(): void
    {
        // Unsubscribe from all subscriptions
        this._unsubscribeAll.next();
        this._unsubscribeAll.complete();
    }

    // -----------------------------------------------------------------------------------------------------
    // @ Public methods
    // -----------------------------------------------------------------------------------------------------

    /**
     * Toggle sidebar open
     *
     * @param key
     */
    toggleSidebarOpen(key): void
    {
        this._fuseSidebarService.getSidebar(key).toggleOpen();
    }
}