import {ChangeDetectionStrategy, Component, OnInit} from '@angular/core';
import {FormBuilder, FormGroup, Validators} from '@angular/forms';
import {CustomErrorStateMatcher} from '@app/_helpers';
import {AuthService} from '@app/_services';
import {Router} from '@angular/router';

@Component({
  selector: 'app-auth',
  templateUrl: './auth.component.html',
  styleUrls: ['./auth.component.scss'],
  changeDetection: ChangeDetectionStrategy.OnPush
})
export class AuthComponent implements OnInit {
  keyForm: FormGroup;
  submitted: boolean = false;
  loading: boolean = false;
  matcher = new CustomErrorStateMatcher();

  constructor(
    private authService: AuthService,
    private formBuilder: FormBuilder,
    private router: Router
  ) { }

  async ngOnInit(): Promise<void> {
    this.keyForm = this.formBuilder.group({
      key: ['', Validators.required],
    });
    if (this.authService.privateKey !== undefined) {
      const setKey = await this.authService.setKey(this.authService.privateKey);
      if (setKey && this.authService.sessionToken !== undefined) {
        this.authService.setState('Click button to log in');
      }
    }
  }

  get keyFormStub(): any { return this.keyForm.controls; }

  async onSubmit(): Promise<void> {
    this.submitted = true;

    if (this.keyForm.invalid) { return; }

    this.loading = true;
    await this.authService.setKey(this.keyFormStub.key.value);
    this.loading = false;
  }

  login(): void {
    const loginStatus = this.authService.login();
    if (loginStatus) {
      this.router.navigate(['/home']);
    }
  }

  switchWindows(): void {
    this.authService.sessionToken = undefined;
    const divOne = document.getElementById('one');
    const divTwo = document.getElementById('two');
    this.toggleDisplay(divOne);
    this.toggleDisplay(divTwo);
  }

  toggleDisplay(element: any): void {
    const style = window.getComputedStyle(element).display;
    if (style === 'block') {
      element.style.display = 'none';
    } else {
      element.style.display = 'block';
    }
  }
}