add adapter pattern

Author: Patrick.Creutzburg

src/app/06. Adapter/models/cat.adapter.ts

@@ -0,0 +1,14 @@
+import { Toy } from './toy.model';
+import { Cat } from './cat.model';
+
+export class CatAdapter implements Toy {
+  private cat: Cat;
+
+  constructor(cat: Cat) {
+    this.cat = cat;
+  }
+
+  public squeak(): string {
+    return this.cat.makeSound();
+  }
+}

src/app/06. Adapter/models/cat.model.ts

@@ -0,0 +1,25 @@
+export interface Cat {
+  hunt(): string;
+  makeSound(): string;
+}
+
+// adaptee
+export class BritishShortHair implements Cat {
+  public hunt(): string {
+    return 'Hunting birds..';
+  }
+
+  public makeSound(): string {
+    return 'Miau.. Miau..';
+  }
+}
+
+export class NorwegianForest implements Cat {
+  public hunt(): string {
+    return 'Hunting fish..';
+  }
+
+  public makeSound(): string {
+    return 'Rrrroar.. Rrrroar..';
+  }
+}

src/app/06. Adapter/models/toy.model.ts

@@ -0,0 +1,10 @@
+// target interface - toys dont hunt and only squeak
+export interface Toy {
+  squeak(): string;
+}
+
+export class ToyCat implements Toy {
+  public squeak(): string {
+    return 'squeaaaaaak...';
+  }
+}

src/app/app-routing.module.ts

@@ -14,11 +14,16 @@ const routes: Routes = [
     path: 'prototype',
     loadChildren: () => import('./03. Prototype/prototype.module').then(m => m.PrototypeModule)
   },
-  { path: 'builder',
+  {
+    path: 'builder',
     loadChildren: () => import('./04. Builder/builder.module').then(m => m.BuilderModule)
   },
-  { path: 'factory-method',
-    loadChildren: () => import('./05. Factory Method/factory-method.module').then(m => m.FactoryMethodModule) }
+  {
+    path: 'factory-method',
+    loadChildren: () => import('./05. Factory Method/factory-method.module').then(m => m.FactoryMethodModule) },
+  {
+    path: 'adapter',
+    loadChildren: () => import('./06. Adapter/adapter.module').then(m => m.AdapterModule) }
 ];
 
 @NgModule({