Implemented the distance donation response

ref #66

src/models/responses/ResponseDistanceDonation.ts

@@ -0,0 +1,35 @@
+import { IsInt, IsObject, IsPositive } from 'class-validator';
+import { DistanceDonation } from '../entities/DistanceDonation';
+import { ResponseDonation } from './ResponseDonation';
+import { ResponseRunner } from './ResponseRunner';
+
+/**
+ * Defines the distance donation response.
+*/
+export class ResponseDistanceDonation extends ResponseDonation {
+
+    /**
+     * The donation's associated runner.
+     * Used as the source of the donation's distance.
+     */
+    @IsObject()
+    runner: ResponseRunner;
+
+    /**
+     * The donation's amount donated per distance.
+     * The amount the donor set to be donated per kilometer that the runner ran.
+     */
+    @IsInt()
+    @IsPositive()
+    amountPerDistance: number;
+
+    /**
+     * Creates a ResponseDistanceDonation object from a scan.
+     * @param donation The distance donation the response shall be build for.
+     */
+    public constructor(donation: DistanceDonation) {
+        super(donation);
+        this.runner = donation.runner.toResponse();
+        this.amountPerDistance = donation.amountPerDistance;
+    }
+}