import { TestBed } from '@angular/core/testing';
import { HttpClient } from '@angular/common/http';
import { Subject, of } from 'rxjs';
import { App } from './app';
import { DownloadsService } from './services/downloads.service';
import { SubscriptionsService } from './services/subscriptions.service';
import { CookieService } from 'ngx-cookie-service';

class DownloadsServiceStub {
  loading = false;
  queue = new Map();
  done = new Map();
  configuration: Record<string, unknown> = { CUSTOM_DIRS: true, CREATE_CUSTOM_DIRS: true, ALLOW_YTDL_OPTIONS_OVERRIDES: false };
  customDirs = { download_dir: [], audio_download_dir: [] };
  queueChanged = new Subject<void>();
  doneChanged = new Subject<void>();
  configurationChanged = new Subject<Record<string, unknown>>();
  customDirsChanged = new Subject<Record<string, string[]>>();
  ytdlOptionsChanged = new Subject<Record<string, unknown>>();
  updated = new Subject<void>();

  getCookieStatus() {
    return of({ status: 'ok', has_cookies: false });
  }

  getPresets() {
    return of({ presets: ['Preset A'] });
  }

  add() {
    return of({ status: 'ok' as const });
  }

  cancelAdd() {
    return of({ status: 'ok' as const });
  }

  startById() {
    return of({});
  }

  delById() {
    return of({});
  }

  delByFilter() {
    return of({});
  }

  startByFilter() {
    return of({});
  }

  uploadCookies() {
    return of({ status: 'ok' });
  }

  deleteCookies() {
    return of({ status: 'ok' });
  }
}

class SubscriptionsServiceStub {
  subscriptions = new Map();
  subscriptionsChanged = new Subject<void>();

  subscribe() {
    return of({ status: 'ok' as const });
  }

  delete() {
    return of({});
  }

  refreshList() {
    return of([]);
  }
}

class CookieServiceStub {
  private cookies = new Map<string, string>();

  get(name: string) {
    return this.cookies.get(name) ?? '';
  }

  set(name: string, value: string) {
    this.cookies.set(name, value);
  }

  check(name: string) {
    return this.cookies.has(name);
  }
}

describe('App', () => {
  let downloads: DownloadsServiceStub;

  beforeEach(async () => {
    Object.defineProperty(window, 'matchMedia', {
      writable: true,
      enumerable: true,
      value: vi.fn().mockImplementation((query: string) => ({
        matches: false,
        media: query,
        onchange: null,
        addEventListener: vi.fn(),
        removeEventListener: vi.fn(),
        dispatchEvent: vi.fn(),
      })),
    });
    downloads = new DownloadsServiceStub();
    await TestBed.configureTestingModule({
      imports: [App],
      providers: [
        { provide: DownloadsService, useValue: downloads },
        { provide: SubscriptionsService, useClass: SubscriptionsServiceStub },
        { provide: CookieService, useClass: CookieServiceStub },
        {
          provide: HttpClient,
          useValue: {
            get: vi.fn().mockReturnValue(of({ 'yt-dlp': 'test', version: 'test' })),
          },
        },
      ],
    }).compileComponents();
  });

  it('should create the app', () => {
    const fixture = TestBed.createComponent(App);
    const app = fixture.componentInstance;
    expect(app).toBeTruthy();
  });

  it('hides manual override input when disabled', () => {
    const fixture = TestBed.createComponent(App);
    fixture.componentInstance.isAdvancedOpen = true;
    fixture.detectChanges();

    const root = fixture.nativeElement as HTMLElement;
    expect(root.querySelector('input[name="ytdlOptionsOverrides"]')).toBeNull();

    const presetWrapper = root.querySelector('ng-select[name="ytdlOptionsPresets"]')?.closest('.col-12');
    expect(presetWrapper?.classList.contains('col-md-6')).toBe(false);

    const presetRow = root.querySelector('ng-select[name="ytdlOptionsPresets"]')?.closest('.row');
    expect(presetRow?.querySelector('input[name="checkIntervalMinutes"]')).toBeNull();
  });

  it('shows manual override input when enabled', () => {
    downloads.configuration['ALLOW_YTDL_OPTIONS_OVERRIDES'] = true;

    const fixture = TestBed.createComponent(App);
    fixture.componentInstance.isAdvancedOpen = true;
    fixture.detectChanges();

    const root = fixture.nativeElement as HTMLElement;
    expect(root.querySelector('input[name="ytdlOptionsOverrides"]')).not.toBeNull();

    const presetWrapper = root.querySelector('ng-select[name="ytdlOptionsPresets"]')?.closest('.col-12');
    expect(presetWrapper?.classList.contains('col-md-6')).toBe(true);

    const presetRow = root.querySelector('ng-select[name="ytdlOptionsPresets"]')?.closest('.row');
    expect(presetRow?.querySelector('input[name="checkIntervalMinutes"]')).toBeNull();
    expect(presetRow?.querySelector('input[name="ytdlOptionsOverrides"]')).not.toBeNull();
  });

  it('does not submit manual overrides when disabled', () => {
    const fixture = TestBed.createComponent(App);
    const app = fixture.componentInstance;

    app.ytdlOptionsOverrides = '{"exec":"echo hi"}';

    const payload = app['buildAddPayload']();

    expect(payload.ytdlOptionsOverrides).toBe('');
  });
});