Update Registration to new auth method

src/db/models/ChallengeCode.ts

@@ -0,0 +1,43 @@
+import { Entity, PrimaryKey, Property } from '@mikro-orm/core';
+import { randomUUID } from 'crypto';
+
+// 30 seconds
+const CHALLENGE_EXPIRY_MS = 3000000 * 1000;
+
+@Entity({ tableName: 'challenge_codes' })
+export class ChallengeCode {
+  @PrimaryKey({ name: 'code', type: 'uuid' })
+  code: string = randomUUID();
+
+  @Property({ name: 'stage', type: 'text' })
+  stage!: 'registration' | 'login';
+
+  @Property({ name: 'auth_type' })
+  authType!: 'mnemonic';
+
+  @Property({ type: 'date' })
+  createdAt: Date = new Date();
+
+  @Property({ type: 'date' })
+  expiresAt: Date = new Date(Date.now() + CHALLENGE_EXPIRY_MS);
+}
+
+export interface ChallengeCodeDTO {
+  code: string;
+  stage: string;
+  authType: string;
+  createdAt: string;
+  expiresAt: string;
+}
+
+export function formatChallengeCode(
+  challenge: ChallengeCode,
+): ChallengeCodeDTO {
+  return {
+    code: challenge.code,
+    stage: challenge.stage,
+    authType: challenge.authType,
+    createdAt: challenge.createdAt.toISOString(),
+    expiresAt: challenge.expiresAt.toISOString(),
+  };
+}