import { HttpClientTestingModule } from '@angular/common/http/testing';
import {
    ComponentFixture,
    inject,
    TestBed,
    waitForAsync,
} from '@angular/core/testing';
import { MatSnackBar, MatSnackBarModule } from '@angular/material/snack-bar';
import { Router } from '@angular/router';
import { RouterTestingModule } from '@angular/router/testing';
import { provideMockStore } from '@ngrx/store/testing';
import { TranslatePipe, TranslateService } from '@ngx-translate/core';
import { MockComponent, MockModule, MockPipe, MockProviders } from 'ng-mocks';
import { NgxIndexedDBService } from 'ngx-indexed-db';
import { of } from 'rxjs';
import { DataService, PlaylistsService } from 'services';
import { Language, STORE_KEY, Theme } from 'shared-interfaces';
import { AppComponent } from './app.component';
import { ElectronServiceStub } from './services/electron.service.stub';
import { SettingsService } from './services/settings.service';

jest.spyOn(global.console, 'error').mockImplementation(() => {
    // suppress console.error output during tests
});

describe('AppComponent', () => {
    let component: AppComponent;
    let electronService: DataService;
    let fixture: ComponentFixture<AppComponent>;
    let settingsService: SettingsService;
    let translateService: TranslateService;
    const defaultLanguage = 'en';

    beforeEach(waitForAsync(() => {
        TestBed.configureTestingModule({
            declarations: [AppComponent, MockPipe(TranslatePipe)],
            providers: [
                MockProviders(
                    TranslateService,
                    PlaylistsService,
                    NgxIndexedDBService,
                    MatSnackBar
                ),
                SettingsService,
                {
                    provide: DataService,
                    useClass: ElectronServiceStub,
                },
                provideMockStore(),
            ],
            imports: [
                MockModule(MatSnackBarModule),
                MockComponent(NgxWhatsNewComponent),
                RouterTestingModule,
                HttpClientTestingModule,
            ],
        }).compileComponents();
    }));

    beforeEach(() => {
        electronService = TestBed.inject(DataService);
        fixture = TestBed.createComponent(AppComponent);
        settingsService = TestBed.inject(SettingsService);
        translateService = TestBed.inject(TranslateService);
        component = fixture.componentInstance;

        // TODO: investigate in detail
        component.triggerAutoUpdateMechanism = jest.fn();
        component.modals = [];
        component.checkForUpdates = jest.fn();
        fixture.detectChanges();
    });

    it('should create the component and set default language', () => {
        jest.spyOn(translateService, 'setDefaultLang');
        jest.spyOn(component, 'setRendererListeners');
        const fixture = TestBed.createComponent(AppComponent);
        const app = fixture.debugElement.componentInstance;
        expect(app).toBeTruthy();
        expect(component.DEFAULT_LANG).toEqual(Language.ENGLISH);
    });

    it('should init component', () => {
        jest.spyOn(translateService, 'setDefaultLang');
        jest.spyOn(component, 'setRendererListeners');
        jest.spyOn(component, 'initSettings');
        jest.spyOn(component, 'handleWhatsNewDialog');
        component.ngOnInit();
        expect(translateService.setDefaultLang).toHaveBeenCalledWith(
            defaultLanguage
        );
        expect(component.setRendererListeners).toHaveBeenCalledTimes(1);
        expect(component.initSettings).toHaveBeenCalledTimes(1);
        expect(component.handleWhatsNewDialog).toHaveBeenCalledTimes(1);
    });

    describe('Test ipc listeners and commands', () => {
        it('should set IPC listeners', () => {
            jest.spyOn(electronService, 'listenOn');
            component.setRendererListeners();
            expect(electronService.listenOn).toHaveBeenCalledTimes(
                component.commandsList.length
            );
        });

        it('should remove all ipc listeners on destroy', () => {
            jest.spyOn(electronService, 'removeAllListeners');
            component.ngOnDestroy();
            expect(electronService.removeAllListeners).toHaveBeenCalledTimes(
                component.commandsList.length
            );
        });

        it('should navigate to the provided route', inject(
            [Router],
            (router: Router) => {
                const route = '/add-playlists';
                jest.spyOn(router, 'navigateByUrl');
                component.navigateToRoute(route);
                expect(router.navigateByUrl).toHaveBeenCalledTimes(1);
                expect(router.navigateByUrl).toHaveBeenCalledWith(route);
            }
        ));
    });

    describe('Test version handling', () => {
        it('should get actual app version which is outdated and show updates dialog', () => {
            const currentAppVersion = '0.0.1';
            const spyOnSettingsGet = jest
                .spyOn(settingsService, 'getValueFromLocalStorage')
                .mockReturnValue(of(currentAppVersion));

            expect(spyOnSettingsGet).toHaveBeenCalled();
        });

        it('should get actual app version which is not outdated and do not shop updates dialog', () => {
            const currentAppVersion = '1.0.0';
            const spyOnSettingsGet = jest
                .spyOn(settingsService, 'getValueFromLocalStorage')
                .mockReturnValue(of(currentAppVersion));

            expect(spyOnSettingsGet).toHaveBeenCalled();
        });
    });

    describe('Set initial settings', () => {
        const theme = Theme.DarkTheme;
        const language = 'es';
        const epgUrl = ['http://localhost/epg.xml'];

        beforeEach(() => {
            jest.spyOn(electronService, 'sendIpcEvent');
            jest.spyOn(settingsService, 'changeTheme');
            jest.spyOn(component, 'handleWhatsNewDialog');
            jest.spyOn(translateService, 'use');
        });

        it('should get and init settings (all settings are defined)', () => {
            const spyOnSettingsGet = jest
                .spyOn(settingsService, 'getValueFromLocalStorage')
                .mockReturnValue(of({ theme, epgUrl, language }));

            component.initSettings();

            expect(spyOnSettingsGet).toHaveBeenCalledWith(STORE_KEY.Settings);
            expect(settingsService.changeTheme).toHaveBeenCalledWith(theme);
            expect(electronService.sendIpcEvent).toHaveBeenCalledTimes(1);
            expect(translateService.use).toHaveBeenCalledWith(language);
        });

        it('should get and init settings (nothing is defined)', () => {
            const spyOnSettingsGet = jest
                .spyOn(settingsService, 'getValueFromLocalStorage')
                .mockReturnValue(of());

            component.initSettings();

            expect(spyOnSettingsGet).toHaveBeenCalledWith(STORE_KEY.Settings);
            expect(settingsService.changeTheme).toHaveBeenCalledTimes(0);
            expect(electronService.sendIpcEvent).toHaveBeenCalledTimes(0);
            expect(translateService.use).toHaveBeenCalledTimes(0);
        });

        it('should get and init settings (only theme is defined)', () => {
            const spyOnSettingsGet = jest
                .spyOn(settingsService, 'getValueFromLocalStorage')
                .mockReturnValue(of({ theme }));

            component.initSettings();

            expect(spyOnSettingsGet).toHaveBeenCalledWith(STORE_KEY.Settings);
            expect(settingsService.changeTheme).toHaveBeenCalledWith(theme);
            expect(electronService.sendIpcEvent).toHaveBeenCalledTimes(1);
            expect(translateService.use).toHaveBeenCalledWith(defaultLanguage);
        });
    });
});