private: adds tokens controller

adds private api
adds AuthTokenDto and AuthTokenWithSecretDto
adds necessary methods in the users service
adds RandomnessError

Signed-off-by: Philip Molares <philip.molares@udo.edu>

src/users/auth-token.entity.ts

@@ -4,22 +4,38 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import {
-  Column,
-  Entity,
-  ManyToOne,
-  PrimaryGeneratedColumn,
-} from 'typeorm/index';
+import { Column, Entity, ManyToOne, PrimaryGeneratedColumn } from 'typeorm';
 import { User } from './user.entity';
+import { Type } from 'class-transformer';
 
 @Entity()
 export class AuthToken {
   @PrimaryGeneratedColumn()
   id: number;
 
-  @ManyToOne((_) => User, (user) => user.authToken)
+  @ManyToOne((_) => User, (user) => user.authTokens)
   user: User;
 
+  @Column()
+  identifier: string;
+
+  @Type(() => Date)
+  @Column('text')
+  createdAt: Date;
+
   @Column()
   accessToken: string;
+
+  public static create(
+    user: User,
+    identifier: string,
+    accessToken: string,
+  ): Pick<AuthToken, 'user' | 'accessToken'> {
+    const newToken = new AuthToken();
+    newToken.user = user;
+    newToken.identifier = identifier;
+    newToken.accessToken = accessToken;
+    newToken.createdAt = new Date();
+    return newToken;
+  }
 }