// Load the implementations that should be tested
import { ChangeDetectorRef, Component, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { async, ComponentFixture, fakeAsync, inject, TestBed, tick, } from '@angular/core/testing';

import { Chips } from './models/chips.model';
import { UploaderService } from '../uploader/uploader.service';
import { ChipsComponent } from './chips.component';
import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
import { By } from '@angular/platform-browser';
import { FormFieldMetadataValueObject } from '../form/builder/models/form-field-metadata-value.model';
import { createTestComponent } from '../testing/utils.test';
import { AuthorityConfidenceStateDirective } from '../authority-confidence/authority-confidence-state.directive';
import { TranslateModule } from '@ngx-translate/core';
import { ConfidenceType } from '../../core/integration/models/confidence-type';
import { SortablejsModule } from 'ngx-sortablejs';
import { environment } from '../../../environments/environment';

describe('ChipsComponent test suite', () => {

  let testComp: TestComponent;
  let chipsComp: ChipsComponent;
  let testFixture: ComponentFixture<TestComponent>;
  let chipsFixture: ComponentFixture<ChipsComponent>;
  let html;
  let chips: Chips;

  // async beforeEach
  beforeEach(async(() => {

    TestBed.configureTestingModule({
      imports: [
        NgbModule,
        SortablejsModule.forRoot({animation: 150}),
        TranslateModule.forRoot()
      ],
      declarations: [
        ChipsComponent,
        TestComponent,
        AuthorityConfidenceStateDirective
      ], // declare the test component
      providers: [
        ChangeDetectorRef,
        ChipsComponent,
        UploaderService
      ],
      schemas: [CUSTOM_ELEMENTS_SCHEMA]
    });

  }));

  describe('', () => {
    // synchronous beforeEach
    beforeEach(() => {
      html = `
      <ds-chips
        *ngIf="chips.hasItems()"
        [chips]="chips"
        [editable]="editable"
        (selected)="onChipSelected($event)"></ds-chips>`;

      testFixture = createTestComponent(html, TestComponent) as ComponentFixture<TestComponent>;
      testComp = testFixture.componentInstance;
    });

    it('should create Chips Component', inject([ChipsComponent], (app: ChipsComponent) => {
      expect(app).toBeDefined();
    }));
  });

  describe('when has items as string', () => {
    beforeEach(() => {
      chips = new Chips(['a', 'b', 'c']);
      chipsFixture = TestBed.createComponent(ChipsComponent);
      chipsComp = chipsFixture.componentInstance; // TruncatableComponent test instance
      chipsComp.editable = true;
      chipsComp.chips = chips;
      chipsFixture.detectChanges();
    });

    afterEach(() => {
      chipsFixture.destroy();
      chipsComp = null;
    });

    it('should set edit mode when a chip item is selected', fakeAsync(() => {

      spyOn(chipsComp.selected, 'emit');

      chipsComp.chipsSelected(new Event('click'), 1);
      chipsFixture.detectChanges();
      tick();

      const item = chipsComp.chips.getChipByIndex(1);

      expect(item.editMode).toBe(true);
      expect(chipsComp.selected.emit).toHaveBeenCalledWith(1);
    }));

    it('should not set edit mode when a chip item is selected and editable is false', fakeAsync(() => {
      chipsComp.editable = false;
      spyOn(chipsComp.selected, 'emit');

      chipsComp.chipsSelected(new Event('click'), 1);
      chipsFixture.detectChanges();
      tick();

      const item = chipsComp.chips.getChipByIndex(1);

      expect(item.editMode).toBe(false);
      expect(chipsComp.selected.emit).not.toHaveBeenCalledWith(1);
    }));

    it('should emit when a chip item is removed and editable is true', fakeAsync(() => {

      spyOn(chipsComp.chips, 'remove');

      const item = chipsComp.chips.getChipByIndex(1);

      chipsComp.removeChips(new Event('click'), 1);
      chipsFixture.detectChanges();
      tick();

      expect(chipsComp.chips.remove).toHaveBeenCalledWith(item);
    }));

    it('should save chips item index when drag and drop start', fakeAsync(() => {
      const de = chipsFixture.debugElement.query(By.css('li.nav-item'));

      de.triggerEventHandler('dragstart', null);

      expect(chipsComp.dragged).toBe(0);
    }));

    it('should update chips item order when drag and drop end', fakeAsync(() => {
      spyOn(chipsComp.chips, 'updateOrder');
      const de = chipsFixture.debugElement.query(By.css('li.nav-item'));

      de.triggerEventHandler('dragend', null);

      expect(chipsComp.dragged).toBe(-1);
      expect(chipsComp.chips.updateOrder).toHaveBeenCalled();
    }));
  });

  describe('when has items as object', () => {
    beforeEach(() => {
      const item = {
        mainField: new FormFieldMetadataValueObject('main test', null, 'test001', 'main test', 0, ConfidenceType.CF_ACCEPTED),
        relatedField: new FormFieldMetadataValueObject('related test', null, 'test002', 'related test', 0, ConfidenceType.CF_ACCEPTED),
        otherRelatedField: new FormFieldMetadataValueObject('other related test')
      };

      chips = new Chips([item], 'display', 'mainField', environment.submission.icons.metadata);
      chipsFixture = TestBed.createComponent(ChipsComponent);
      chipsComp = chipsFixture.componentInstance; // TruncatableComponent test instance
      chipsComp.editable = true;
      chipsComp.showIcons = true;
      chipsComp.chips = chips;
      chipsFixture.detectChanges();
    });

    it('should show icon for every field that has a configured icon', () => {
      const de = chipsFixture.debugElement.query(By.css('li.nav-item'));
      const icons = de.queryAll(By.css('i.fas'));

      expect(icons.length).toBe(4);

    });

    it('should show tooltip on mouse over an icon', () => {
      const de = chipsFixture.debugElement.query(By.css('li.nav-item'));
      const icons = de.queryAll(By.css('i.fas'));

      icons[0].triggerEventHandler('mouseover', null);

      expect(chipsComp.tipText).toEqual(['main test']);
    });
  });
});

// declare a test component
@Component({
  selector: 'ds-test-cmp',
  template: ``
})
class TestComponent {

  public chips = new Chips(['a', 'b', 'c']);
  public editable = true;
}
