// -
//   ========================LICENSE_START=================================
//   O-RAN-SC
//   %%
//   Copyright (C) 2021: Nordix Foundation
//   %%
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at
//
//        http://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing, software
//   distributed under the License is distributed on an "AS IS" BASIS,
//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//   See the License for the specific language governing permissions and
//   limitations under the License.
//   ========================LICENSE_END===================================
//

import { HarnessLoader } from '@angular/cdk/testing';
import { TestbedHarnessEnvironment } from '@angular/cdk/testing/testbed';
import { Component, ViewChild, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { FormBuilder, FormGroup } from '@angular/forms';
import { MatButtonModule } from '@angular/material/button';
import { MatButtonHarness } from '@angular/material/button/testing';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatInputModule } from '@angular/material/input';
import { MatInputHarness } from '@angular/material/input/testing';
import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { NoTypePolicyEditorComponent } from './no-type-policy-editor.component';

describe('NoTypePolicyEditorComponent', () => {
  let formGroup: FormGroup = new FormGroup({});

  let component: TestNoTypePolicyEditorComponentHostComponent;
  let fixture: ComponentFixture<TestNoTypePolicyEditorComponentHostComponent>;
  let loader: HarnessLoader;

  beforeEach(async () => {
    TestBed.configureTestingModule({
      imports: [
        BrowserModule,
        BrowserAnimationsModule,
        MatButtonModule,
        MatFormFieldModule,
        MatInputModule
      ],
      schemas: [
        CUSTOM_ELEMENTS_SCHEMA
      ],
      declarations: [
        NoTypePolicyEditorComponent,
        TestNoTypePolicyEditorComponentHostComponent
      ],
      providers: [
        FormBuilder
      ]
    })
    .compileComponents();

    fixture = TestBed.createComponent(TestNoTypePolicyEditorComponentHostComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
    loader = TestbedHarnessEnvironment.loader(fixture);
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('should be added to form group with required validator', async () => {
    let textArea: MatInputHarness = await loader.getHarness(MatInputHarness.with({ selector: '#policyJsonTextArea' }));

    expect(formGroup.get('policyJsonTextArea')).toBeTruthy();
    expect(await textArea.isRequired()).toBeTruthy();
  });

  it('should contain provided policy json and enabled Format button', async () => {
    let textArea: MatInputHarness = await loader.getHarness(MatInputHarness.with({ selector: '#policyJsonTextArea' }));
    expect(await textArea.getValue()).toEqual('{"A":"A"}');

    console.log('Validity:',formGroup.valid);
    let formatButton: MatButtonHarness = await loader.getHarness(MatButtonHarness.with({ selector: '#formatButton' }));
    expect(await formatButton.isDisabled()).toBeFalsy();
  });

  it('Format button should be disabled when json not valid', async () => {
    const ele = formGroup.get('policyJsonTextArea');
    ele.setValue('{');

    let formatButton: MatButtonHarness = await loader.getHarness(MatButtonHarness.with({ selector: '#formatButton' }));
    expect(await formatButton.isDisabled()).toBeTruthy();
  });

  it('should format unformatted json', async () => {
    const textArea = formGroup.get('policyJsonTextArea');
    textArea.setValue('{"A":"A"}');
    component.noTypePolicyEditorComponent.formatJsonInput();
    expect(component.noTypePolicyEditorComponent.policyJson).toEqual('{\n  "A": "A"\n}');
  });

  @Component({
    selector: `no-type-policy-editor-host-component`,
    template: `<nrcp-no-type-policy-editor [policyJson]="this.policyJson" [instanceForm]="instanceForm"></nrcp-no-type-policy-editor>`
  })
  class TestNoTypePolicyEditorComponentHostComponent {
    @ViewChild(NoTypePolicyEditorComponent)
    noTypePolicyEditorComponent: NoTypePolicyEditorComponent;
    instanceForm: FormGroup = formGroup;
    policyJson: string = '{"A":"A"}';
  }
});