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-rw-r--r--vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.spec.ts93
-rw-r--r--vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.ts29
-rw-r--r--vid-webpack-master/src/app/featureFlag/featureFlag.module.ts32
-rw-r--r--vid-webpack-master/src/app/featureFlag/service/featureFlag.service.ts28
4 files changed, 182 insertions, 0 deletions
diff --git a/vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.spec.ts b/vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.spec.ts
new file mode 100644
index 000000000..5722aa795
--- /dev/null
+++ b/vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.spec.ts
@@ -0,0 +1,93 @@
+import {TestBed, ComponentFixture, tick, inject} from '@angular/core/testing';
+import {Component, DebugElement, Renderer2, Type} from "@angular/core";
+import {By} from "@angular/platform-browser";
+import {BasicFeatureFlagDirective} from "./basic.featureFlag.directive";
+import {FeatureFlagService} from "../../service/featureFlag.service";
+import {ConfigurationService} from "../../../shared/services/configuration.service";
+import {HttpClientTestingModule, HttpTestingController} from "@angular/common/http/testing";
+import {NgRedux} from "@angular-redux/store";
+import {of} from "rxjs";
+
+@Component({
+ template: `
+ <div
+ id="featureFlagOff"
+ featureFlag
+ [flagName]='"featureFlagOff"'>
+ </div>
+ <div
+ id="featureFlagOn"
+ featureFlag
+ [flagName]='"featureFlagOn"'>
+ </div>`
+})
+class TestFeatureFlagComponent {
+}
+
+class MockRenderer<T> {
+ setStyle() {
+
+ }
+}
+
+class MockAppStore<T> {
+ getState() {
+ return {
+ global: {
+ flags : {
+
+ }
+ }
+ }
+ }
+}
+
+
+describe('Basic Feature Flag Directive', () => {
+ let component: TestFeatureFlagComponent;
+ let fixture: ComponentFixture<TestFeatureFlagComponent>;
+ let directiveInstance: BasicFeatureFlagDirective;
+ let elementOff: DebugElement;
+ let elementOn: DebugElement;
+
+ beforeEach(() => {
+ TestBed.configureTestingModule({
+ imports: [
+ HttpClientTestingModule
+ ],
+ declarations: [
+ TestFeatureFlagComponent,
+ BasicFeatureFlagDirective],
+ providers: [
+ FeatureFlagService,
+ ConfigurationService,
+ {provide: NgRedux, useClass: MockAppStore},
+ {provide: Renderer2, useClass: MockRenderer}]
+ }).compileComponents();
+
+ fixture = TestBed.createComponent(TestFeatureFlagComponent);
+ component = fixture.componentInstance;
+ elementOff = fixture.debugElement.query(By.css('#featureFlagOff'));
+ elementOn = fixture.debugElement.query(By.css('#featureFlagOn'));
+ directiveInstance = elementOff.injector.get(BasicFeatureFlagDirective);
+ });
+
+
+ test('directive should be defined', () => {
+ expect(directiveInstance).toBeDefined();
+ });
+
+ test('should hide element if feature flag is off', () => {
+ directiveInstance.flagName = 'featureFlagOff';
+
+ directiveInstance.ngAfterContentChecked();
+ expect(elementOff.nativeElement.style.display).toEqual('none');
+ });
+
+ test('should show element if feature flag is on', () => {
+ directiveInstance.flagName = 'featureFlagOn';
+
+ directiveInstance.ngAfterContentChecked();
+ expect(elementOn.nativeElement.style.display).toEqual('');
+ });
+});
diff --git a/vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.ts b/vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.ts
new file mode 100644
index 000000000..e6cbb4f17
--- /dev/null
+++ b/vid-webpack-master/src/app/featureFlag/directive/basic/basic.featureFlag.directive.ts
@@ -0,0 +1,29 @@
+import {AfterContentChecked, Directive, ElementRef, Input} from '@angular/core';
+import {FeatureFlagService} from "../../service/featureFlag.service";
+import * as _ from 'lodash';
+
+/************************************************************************
+ Feature Flag Directive
+ Example:
+ <div featureFlag [flagName]='"<flag name>"'></div>
+ ************************************************************************/
+@Directive({
+ selector: '[featureFlag]'
+})
+export class BasicFeatureFlagDirective implements AfterContentChecked {
+ @Input() flagName: string;
+ element: ElementRef;
+
+ constructor(el: ElementRef, private _featureToggleService: FeatureFlagService) {
+ this.element = el;
+ }
+
+ ngAfterContentChecked(): void {
+ if (!_.isNil(this.element)) {
+ const isFeatureOn: boolean = this._featureToggleService.isFeatureOn(this.flagName);
+ if(!isFeatureOn){
+ this._featureToggleService.hideElement(this.element)
+ }
+ }
+ }
+}
diff --git a/vid-webpack-master/src/app/featureFlag/featureFlag.module.ts b/vid-webpack-master/src/app/featureFlag/featureFlag.module.ts
new file mode 100644
index 000000000..d22076682
--- /dev/null
+++ b/vid-webpack-master/src/app/featureFlag/featureFlag.module.ts
@@ -0,0 +1,32 @@
+import {ModuleWithProviders, NgModule} from '@angular/core';
+import {CommonModule} from '@angular/common';
+import {BrowserModule} from "@angular/platform-browser";
+import {HttpClientModule} from "@angular/common/http";
+import {FeatureFlagService} from "./service/featureFlag.service";
+import {BasicFeatureFlagDirective} from "./directive/basic/basic.featureFlag.directive";
+
+
+@NgModule({
+ imports: [
+ BrowserModule,
+ HttpClientModule,
+ CommonModule
+ ],
+ declarations: [
+ BasicFeatureFlagDirective
+ ],
+ exports: [
+ BasicFeatureFlagDirective
+ ],
+ providers: [
+ FeatureFlagService
+ ]
+})
+export class FeatureFlagModule {
+ static forRoot(): ModuleWithProviders {
+ return {
+ ngModule: FeatureFlagModule,
+ providers: []
+ };
+ }
+}
diff --git a/vid-webpack-master/src/app/featureFlag/service/featureFlag.service.ts b/vid-webpack-master/src/app/featureFlag/service/featureFlag.service.ts
new file mode 100644
index 000000000..09ce7bbf5
--- /dev/null
+++ b/vid-webpack-master/src/app/featureFlag/service/featureFlag.service.ts
@@ -0,0 +1,28 @@
+import {ElementRef, Injectable, Renderer2, RendererFactory2} from "@angular/core";
+import {ConfigurationService} from "../../shared/services/configuration.service";
+
+@Injectable()
+export class FeatureFlagService{
+ private features : { [key: string]: boolean } = {};
+ private renderer: Renderer2;
+ constructor(private _configurationService: ConfigurationService,
+ rendererFactory: RendererFactory2){
+ this.renderer = rendererFactory.createRenderer(null, null);
+ this._configurationService.getFlags().subscribe((res: { [key: string]: boolean }) =>{
+ this.features = res;
+ })
+ }
+
+
+ isFeatureOn(feature : string) : boolean {
+ return this.features && this.getFeatureFlag()[feature] === true;
+ }
+
+ getFeatureFlag() : { [key: string]: boolean } {
+ return this.features;
+ }
+
+ hideElement(element: ElementRef) {
+ this.renderer.setStyle(element.nativeElement, 'display', 'none');
+ }
+}