import {waitForAsync, TestBed} from '@angular/core/testing';
import {By} from '@angular/platform-browser';
import {Component, ElementRef, ViewChild, ViewEncapsulation, signal} from '@angular/core';
import {MatProgressSpinnerModule} from './module';
import {MatProgressSpinner, MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS} from './progress-spinner';

describe('MatProgressSpinner', () => {
  beforeEach(waitForAsync(() => {
    TestBed.configureTestingModule({
      imports: [
        MatProgressSpinnerModule,
        BasicProgressSpinner,
        IndeterminateProgressSpinner,
        ProgressSpinnerWithValueAndBoundMode,
        ProgressSpinnerWithColor,
        ProgressSpinnerCustomStrokeWidth,
        ProgressSpinnerCustomDiameter,
        SpinnerWithColor,
        ProgressSpinnerWithStringValues,
        IndeterminateSpinnerInShadowDom,
        IndeterminateSpinnerInShadowDomWithNgIf,
        SpinnerWithMode,
      ],
    });
  }));

  it('should apply a mode of "determinate" if no mode is provided.', () => {
    let fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    expect(progressElement.componentInstance.mode).toBe('determinate');
  });

  it('should not modify the mode if a valid mode is provided.', () => {
    let fixture = TestBed.createComponent(IndeterminateProgressSpinner);
    fixture.detectChanges();

    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    expect(progressElement.componentInstance.mode).toBe('indeterminate');
  });

  it('should define a default value of zero for the value attribute', () => {
    let fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    expect(progressElement.componentInstance.value).toBe(0);
  });

  it('should set the value to 0 when the mode is set to indeterminate', () => {
    let fixture = TestBed.createComponent(ProgressSpinnerWithValueAndBoundMode);
    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    fixture.componentInstance.mode.set('determinate');
    fixture.detectChanges();

    expect(progressElement.componentInstance.value).toBe(50);
    fixture.componentInstance.mode.set('indeterminate');
    fixture.detectChanges();
    expect(progressElement.componentInstance.value).toBe(0);
  });

  it('should retain the value if it updates while indeterminate', () => {
    let fixture = TestBed.createComponent(ProgressSpinnerWithValueAndBoundMode);
    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;

    fixture.componentInstance.mode.set('determinate');
    fixture.detectChanges();
    expect(progressElement.componentInstance.value).toBe(50);

    fixture.componentInstance.mode.set('indeterminate');
    fixture.detectChanges();
    expect(progressElement.componentInstance.value).toBe(0);

    fixture.componentInstance.value.set(75);
    fixture.detectChanges();
    expect(progressElement.componentInstance.value).toBe(0);

    fixture.componentInstance.mode.set('determinate');
    fixture.detectChanges();
    expect(progressElement.componentInstance.value).toBe(75);
  });

  it('should clamp the value of the progress between 0 and 100', () => {
    let fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    let progressComponent = progressElement.componentInstance;

    progressComponent.value = 50;
    expect(progressComponent.value).toBe(50);

    progressComponent.value = 0;
    expect(progressComponent.value).toBe(0);

    progressComponent.value = 100;
    expect(progressComponent.value).toBe(100);

    progressComponent.value = 999;
    expect(progressComponent.value).toBe(100);

    progressComponent.value = -10;
    expect(progressComponent.value).toBe(0);
  });

  it('should default to a stroke width that is 10% of the diameter', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomDiameter);
    const spinner = fixture.debugElement.query(By.directive(MatProgressSpinner))!;

    fixture.componentInstance.diameter = 67;
    fixture.detectChanges();

    expect(spinner.componentInstance.strokeWidth).toBe(6.7);
  });

  it('should allow a custom diameter', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomDiameter);
    const spinner = fixture.debugElement.query(By.css('mat-progress-spinner'))!.nativeElement;
    const svgElement = fixture.nativeElement.querySelector('svg');

    fixture.componentInstance.diameter = 32;
    fixture.detectChanges();

    expect(parseInt(spinner.style.width))
      .withContext('Expected the custom diameter to be applied to the host element width.')
      .toBe(32);
    expect(parseInt(spinner.style.height))
      .withContext('Expected the custom diameter to be applied to the host element height.')
      .toBe(32);
    expect(parseInt(svgElement.clientWidth))
      .withContext('Expected the custom diameter to be applied to the svg element width.')
      .toBe(32);
    expect(parseInt(svgElement.clientHeight))
      .withContext('Expected the custom diameter to be applied to the svg element height.')
      .toBe(32);
    expect(svgElement.getAttribute('viewBox'))
      .withContext('Expected the custom diameter to be applied to the svg viewBox.')
      .toBe('0 0 25.2 25.2');
  });

  it('should allow a custom stroke width', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomStrokeWidth);

    fixture.componentInstance.strokeWidth = 40;
    fixture.detectChanges();

    const circleElement = fixture.nativeElement.querySelector('circle');
    const svgElement = fixture.nativeElement.querySelector('svg');

    expect(parseInt(circleElement.style.strokeWidth))
      .withContext(
        'Expected the custom stroke ' +
          'width to be applied to the circle element as a percentage of the element size.',
      )
      .toBe(40);
    expect(svgElement.getAttribute('viewBox'))
      .withContext('Expected the viewBox to be adjusted based on the stroke width.')
      .toBe('0 0 130 130');
  });

  it('should allow floating point values for custom diameter', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomDiameter);

    fixture.componentInstance.diameter = 32.5;
    fixture.detectChanges();

    const spinner = fixture.debugElement.query(By.css('mat-progress-spinner'))!.nativeElement;
    const svgElement: HTMLElement = fixture.nativeElement.querySelector('svg');

    expect(parseFloat(spinner.style.width))
      .withContext('Expected the custom diameter to be applied to the host element width.')
      .toBe(32.5);
    expect(parseFloat(spinner.style.height))
      .withContext('Expected the custom diameter to be applied to the host element height.')
      .toBe(32.5);
    expect(Math.ceil(svgElement.clientWidth))
      .withContext('Expected the custom diameter to be applied to the svg element width.')
      .toBe(33);
    expect(Math.ceil(svgElement.clientHeight))
      .withContext('Expected the custom diameter to be applied to the svg element height.')
      .toBe(33);
    expect(svgElement.getAttribute('viewBox'))
      .withContext('Expected the custom diameter to be applied to the svg viewBox.')
      .toBe('0 0 25.75 25.75');
  });

  it('should allow floating point values for custom stroke width', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomStrokeWidth);

    fixture.componentInstance.strokeWidth = 40.5;
    fixture.detectChanges();

    const circleElement = fixture.nativeElement.querySelector('circle');
    const svgElement = fixture.nativeElement.querySelector('svg');

    expect(parseFloat(circleElement.style.strokeWidth))
      .withContext(
        'Expected the custom stroke ' +
          'width to be applied to the circle element as a percentage of the element size.',
      )
      .toBe(40.5);
    expect(svgElement.getAttribute('viewBox'))
      .withContext('Expected the viewBox to be adjusted based on the stroke width.')
      .toBe('0 0 130.5 130.5');
  });

  it('should expand the host element if the stroke width is greater than the default', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomStrokeWidth);
    const element = fixture.debugElement.nativeElement.querySelector('.mat-mdc-progress-spinner');

    fixture.componentInstance.strokeWidth = 40;
    fixture.detectChanges();

    expect(element.style.width).toBe('100px');
    expect(element.style.height).toBe('100px');
  });

  it('should not collapse the host element if the stroke width is less than the default', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerCustomStrokeWidth);
    const element = fixture.debugElement.nativeElement.querySelector('.mat-mdc-progress-spinner');

    fixture.componentInstance.strokeWidth = 5;
    fixture.detectChanges();

    expect(element.style.width).toBe('100px');
    expect(element.style.height).toBe('100px');
  });

  it('should set the color class on the mat-spinner', () => {
    let fixture = TestBed.createComponent(SpinnerWithColor);
    fixture.detectChanges();

    let progressElement = fixture.debugElement.query(By.css('mat-spinner'))!;

    expect(progressElement.nativeElement.classList).toContain('mat-primary');

    fixture.componentInstance.color.set('accent');
    fixture.detectChanges();

    expect(progressElement.nativeElement.classList).toContain('mat-accent');
    expect(progressElement.nativeElement.classList).not.toContain('mat-primary');
  });

  it('should set the color class on the mat-progress-spinner', () => {
    let fixture = TestBed.createComponent(ProgressSpinnerWithColor);
    fixture.detectChanges();

    let progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;

    expect(progressElement.nativeElement.classList).toContain('mat-primary');

    fixture.componentInstance.color.set('accent');
    fixture.detectChanges();

    expect(progressElement.nativeElement.classList).toContain('mat-accent');
    expect(progressElement.nativeElement.classList).not.toContain('mat-primary');
  });

  it('should remove the underlying SVG element from the tab order explicitly', () => {
    const fixture = TestBed.createComponent(BasicProgressSpinner);

    fixture.detectChanges();

    expect(fixture.nativeElement.querySelector('svg').getAttribute('focusable')).toBe('false');
  });

  it('should handle the number inputs being passed in as strings', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerWithStringValues);
    const spinner = fixture.debugElement.query(By.directive(MatProgressSpinner))!;
    const svgElement = spinner.nativeElement.querySelector('svg');

    fixture.detectChanges();

    expect(spinner.componentInstance.diameter).toBe(37);
    expect(spinner.componentInstance.strokeWidth).toBe(11);
    expect(spinner.componentInstance.value).toBe(25);

    expect(spinner.nativeElement.style.width).toBe('37px');
    expect(spinner.nativeElement.style.height).toBe('37px');

    expect(svgElement.clientWidth).toBe(37);
    expect(svgElement.clientHeight).toBe(37);
    expect(svgElement.getAttribute('viewBox')).toBe('0 0 38 38');
  });

  it('should update the element size when changed dynamically', () => {
    let fixture = TestBed.createComponent(BasicProgressSpinner);
    let spinner = fixture.debugElement.query(By.directive(MatProgressSpinner))!;
    spinner.componentInstance.diameter = 32;
    fixture.detectChanges();
    expect(spinner.nativeElement.style.width).toBe('32px');
    expect(spinner.nativeElement.style.height).toBe('32px');
  });

  it('should be able to set a default diameter', () => {
    TestBed.resetTestingModule().configureTestingModule({
      imports: [MatProgressSpinnerModule, BasicProgressSpinner],
      providers: [
        {
          provide: MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS,
          useValue: {diameter: 23},
        },
      ],
    });

    const fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    const progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    expect(progressElement.componentInstance.diameter).toBe(23);
  });

  it('should be able to set a default stroke width', () => {
    TestBed.resetTestingModule().configureTestingModule({
      imports: [MatProgressSpinnerModule, BasicProgressSpinner],
      providers: [
        {
          provide: MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS,
          useValue: {strokeWidth: 7},
        },
      ],
    });

    const fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    const progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    expect(progressElement.componentInstance.strokeWidth).toBe(7);
  });

  it('should be able to set a default color', () => {
    TestBed.resetTestingModule().configureTestingModule({
      imports: [MatProgressSpinnerModule, BasicProgressSpinner],
      providers: [
        {
          provide: MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS,
          useValue: {color: 'warn'},
        },
      ],
    });

    const fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    const progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    expect(progressElement.componentInstance.color).toBe('warn');
    expect(progressElement.nativeElement.classList).toContain('mat-warn');
  });

  it('should set `aria-valuenow` to the current value in determinate mode', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerWithValueAndBoundMode);
    const progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    fixture.componentInstance.mode.set('determinate');
    fixture.componentInstance.value.set(37);
    fixture.detectChanges();

    expect(progressElement.nativeElement.getAttribute('aria-valuenow')).toBe('37');
  });

  it('should clear `aria-valuenow` in indeterminate mode', () => {
    const fixture = TestBed.createComponent(ProgressSpinnerWithValueAndBoundMode);
    const progressElement = fixture.debugElement.query(By.css('mat-progress-spinner'))!;
    fixture.componentInstance.mode.set('determinate');
    fixture.componentInstance.value.set(89);
    fixture.detectChanges();

    expect(progressElement.nativeElement.hasAttribute('aria-valuenow')).toBe(true);

    fixture.componentInstance.mode.set('indeterminate');
    fixture.detectChanges();

    expect(progressElement.nativeElement.hasAttribute('aria-valuenow')).toBe(false);
  });

  it('should apply aria-hidden to child nodes', () => {
    const fixture = TestBed.createComponent(BasicProgressSpinner);
    fixture.detectChanges();

    const progressElement = fixture.nativeElement.querySelector('mat-progress-spinner');
    const children = Array.from<HTMLElement>(progressElement.children);

    expect(children.length).toBeGreaterThan(0);
    expect(children.every(child => child.getAttribute('aria-hidden') === 'true')).toBe(true);
  });

  it('should be able to change the mode on a mat-spinner', () => {
    const fixture = TestBed.createComponent(SpinnerWithMode);
    fixture.detectChanges();

    const progressElement = fixture.debugElement.query(By.css('mat-spinner')).nativeElement;
    expect(progressElement.getAttribute('mode')).toBe('determinate');
  });
});

@Component({
  template: '<mat-progress-spinner></mat-progress-spinner>',
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class BasicProgressSpinner {}

@Component({
  template: '<mat-progress-spinner [strokeWidth]="strokeWidth"></mat-progress-spinner>',
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class ProgressSpinnerCustomStrokeWidth {
  strokeWidth: number;
}

@Component({
  template: '<mat-progress-spinner [diameter]="diameter"></mat-progress-spinner>',
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class ProgressSpinnerCustomDiameter {
  diameter: number;
}

@Component({
  template: '<mat-progress-spinner mode="indeterminate"></mat-progress-spinner>',
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class IndeterminateProgressSpinner {}

@Component({
  template: '<mat-progress-spinner [value]="value()" [mode]="mode()"></mat-progress-spinner>',
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class ProgressSpinnerWithValueAndBoundMode {
  mode = signal('indeterminate');
  value = signal(50);
}

@Component({
  template: `
    <mat-spinner [color]="color()"></mat-spinner>`,
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class SpinnerWithColor {
  color = signal('primary');
}

@Component({
  template: `
    <mat-progress-spinner value="50" [color]="color()"></mat-progress-spinner>`,
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class ProgressSpinnerWithColor {
  color = signal('primary');
}

@Component({
  template: `
    <mat-progress-spinner value="25" diameter="37" strokeWidth="11"></mat-progress-spinner>
  `,
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class ProgressSpinnerWithStringValues {}

@Component({
  template: `
    <mat-progress-spinner mode="indeterminate" [diameter]="diameter"></mat-progress-spinner>
  `,
  encapsulation: ViewEncapsulation.ShadowDom,
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class IndeterminateSpinnerInShadowDom {
  diameter: number;
}

@Component({
  template: `
    @if (true) {
      <div>
        <mat-progress-spinner mode="indeterminate" [diameter]="diameter"></mat-progress-spinner>
      </div>
    }
  `,
  encapsulation: ViewEncapsulation.ShadowDom,
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class IndeterminateSpinnerInShadowDomWithNgIf {
  @ViewChild(MatProgressSpinner, {read: ElementRef})
  spinner: ElementRef<HTMLElement>;

  diameter: number;
}

@Component({
  template: '<mat-spinner mode="determinate"></mat-spinner>',
  standalone: true,
  imports: [MatProgressSpinnerModule],
})
class SpinnerWithMode {}