Implemented permission getting

ref #6

src/models/responses/ResponsePermission.ts

@@ -0,0 +1,46 @@
+import {
+    IsInt,
+    IsNotEmpty,
+    IsObject
+} from "class-validator";
+import { Permission } from '../entities/Permission';
+import { Principal } from '../entities/Principal';
+import { PermissionAction } from '../enums/PermissionAction';
+import { PermissionTarget } from '../enums/PermissionTargets';
+
+/**
+ * Defines a track of given length.
+*/
+export class ResponsePermission {
+    /**
+     * Autogenerated unique id (primary key).
+     */
+    @IsInt()
+    id: number;;
+
+    /**
+     * The permissions's principal.
+     */
+    @IsObject()
+    @IsNotEmpty()
+    principal: Principal;
+
+    /**
+     * The permissions's target.
+     */
+    @IsNotEmpty()
+    target: PermissionTarget;
+
+    /**
+     * The permissions's action.
+     */
+    @IsNotEmpty()
+    action: PermissionAction;
+
+    public constructor(permission: Permission) {
+        this.id = permission.id;
+        this.principal = permission.principal;
+        this.target = permission.target;
+        this.action = permission.action;
+    }
+}

src/models/responses/ResponsePrincipal.ts

@@ -0,0 +1,20 @@
+import {
+    IsInt
+} from "class-validator";
+import { Principal } from '../entities/Principal';
+
+/**
+ * Defines Principal's response class.
+*/
+export abstract class ResponsePrincipal {
+
+    /**
+     * Autogenerated unique id (primary key).
+     */
+    @IsInt()
+    id: number;
+
+    public constructor(principal: Principal) {
+        this.id = principal.id;
+    }
+}

src/models/responses/ResponseUser.ts

@@ -1,24 +1,19 @@
 import {
     IsArray,
     IsBoolean,
-    IsInt,
+
     IsOptional,
     IsString
 } from "class-validator";
 import { Permission } from '../entities/Permission';
 import { User } from '../entities/User';
 import { UserGroup } from '../entities/UserGroup';
+import { ResponsePrincipal } from './ResponsePrincipal';
 
 /**
  * Defines a user response.
 */
-export class ResponseUser {
-    /**
-     * Autogenerated unique id (primary key).
-     */
-    @IsInt()
-    id: number;;
-
+export class ResponseUser extends ResponsePrincipal {
     /**
      * The user's first name.
      */
@@ -80,7 +75,7 @@ export class ResponseUser {
     permissions: Permission[];
 
     public constructor(user: User) {
-        this.id = user.id;
+        super(user);
         this.firstname = user.firstname;
         this.middlename = user.middlename;
         this.lastname = user.lastname;