Implemented runner selfservice token generation

ref #112

src/jwtcreator.ts

@@ -1,6 +1,7 @@
 import { IsBoolean, IsEmail, IsInt, IsNotEmpty, IsOptional, IsString, IsUUID } from 'class-validator';
 import * as jsonwebtoken from "jsonwebtoken";
 import { config } from './config';
+import { Runner } from './models/entities/Runner';
 import { User } from './models/entities/User';
 
 /**
@@ -34,6 +35,19 @@ export class JwtCreator {
         }, config.jwt_secret)
     }
 
+    /**
+     * Creates a new selfservice token for a given runner.
+     * @param runner Runner entity that the access token shall be created for.
+     * @param expiry_timestamp Timestamp for the token expiry. Will be set about 9999 years if none provided.
+     */
+    public static createSelfService(runner: Runner, expiry_timestamp?: number) {
+        if (!expiry_timestamp) { expiry_timestamp = Math.floor(Date.now() / 1000) + 36000 * 60 * 24 * 365 * 9999; }
+        return jsonwebtoken.sign({
+            id: runner.id,
+            exp: expiry_timestamp
+        }, config.jwt_secret)
+    }
+
     /**
      * Creates a new password reset token for a given user.
      * The token is valid for 15 minutes or 1 use - whatever comes first.