import { Component, AfterViewInit, OnInit, ViewChild } from'@angular/core';

import {
  LoaderType,
  LoaderThemeColor,
  LoaderSize,
} from '@progress/kendo-angular-indicators';
import { FormControl, FormGroup, Validators } from '@angular/forms';
import { TextBoxComponent } from '@progress/kendo-angular-inputs';
@Component({
  selector: 'my-app',
  template: `
<div class="login-page--main-container">
  <kendo-card class="login-page--kendo-card" *ngIf="!showLoader">
    <div class="login-page--form-container">
      <form [formGroup]="loginForm" class="login-page--login-form" (ngSubmit)="onSubmit()">
        <div class="login-page--formfield">
          <div class="login-page--formfield-user">
            <kendo-formfield>
              <kendo-textbox
                class="login-page--textbox"
                formControlName="username"
                #username
                required
                placeholder="Username">
                <ng-template kendoTextBoxPrefixTemplate>
                  <img src="assets/content/images/login-images/profile.svg" alt="new" class="login-page--user-img" />
                </ng-template>
              </kendo-textbox>
              <kendo-formerror class="login-page-kendo-form-error">
                Username is required
              </kendo-formerror>
            </kendo-formfield>
          </div>
          <kendo-formfield>
            <kendo-textbox
              #textbox
              placeholder="Password"
              [clearButton]="true"
              class="login-page--textbox"
              formControlName="password">
              <ng-template kendoTextBoxSuffixTemplate>
                <button kendoButton look="clear" (click)="togglePasswordVisibility()"> Eye </button>
              </ng-template>
              <ng-template kendoTextBoxPrefixTemplate>
                <img src="assets/content/images/login-images/password.svg" alt="new" class="login-page--profile-img" />
              </ng-template>
            </kendo-textbox>
            <kendo-formerror class="login-page-kendo-form-error">
              Password is required
            </kendo-formerror>
          </kendo-formfield>
          <div class="login-page--forgot-div">
            <!-- Optional forgot password link -->
          </div>
        </div>
        <div>
          <button kendoButton class="login-page--signin-button" [disabled]="loginForm.invalid">
            Sign In
          </button>
        </div>
      </form>
    </div>
  </kendo-card>
  <div class="app-screen--loader" *ngIf="showLoader">
  <div class="example-item" *ngFor="let loader of loaders">
          <div class="example-item-title">{{ loader.type | titlecase }}</div>
          <div class="k-block">
            <kendo-loader
              [type]="loader.type"
              [themeColor]="loader.themeColor"
              [size]="loader.size"
            >
            </kendo-loader>
          </div>
        </div>
    <div>Signing in....</div>
  </div>
</div>
  `,
})
export class AppComponent implements AfterViewInit {
  public loginForm: FormGroup;
  public showLoader = false;
  public loaders = [
    {
      type: <LoaderType>'pulsing',
      themeColor: <LoaderThemeColor>'primary',
      size: <LoaderSize>'medium',
    },
    {
      type: <LoaderType>'infinite-spinner',
      themeColor: <LoaderThemeColor>'secondary',
      size: <LoaderSize>'medium',
    },
    {
      type: <LoaderType>'converging-spinner',
      themeColor: <LoaderThemeColor>'info',
      size: <LoaderSize>'medium',
    },
  ];
  @ViewChild('textbox') public textbox!: TextBoxComponent;
  constructor() {
    this.loginForm = new FormGroup({
      username: new FormControl('', Validators.required),
      password: new FormControl('', Validators.required),
    });
  }
  public ngAfterViewInit(): void {
    this.textbox.input.nativeElement.type = 'password';
  }
  public togglePasswordVisibility(): void {
    const inputEl = this.textbox.input.nativeElement;
    inputEl.type = inputEl.type === 'password' ? 'text' : 'password';
  }
  public async onSubmit() {
    if (this.loginForm.valid) {
      this.showLoader = true;
      await new Promise((resolve) => setTimeout(resolve, 1000));
      this.showLoader = false;
    }
  }
}