From 8882df4c0dd39fa4cf2e53f998359e02cba477f4 Mon Sep 17 00:00:00 2001
From: Alice Gaudon <alice@gaudon.pro>
Date: Sat, 25 Apr 2020 16:08:20 +0200
Subject: [PATCH] Improve verbosity of auth error

---
 src/auth/AuthGuard.ts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/auth/AuthGuard.ts b/src/auth/AuthGuard.ts
index a808a87..778c7c4 100644
--- a/src/auth/AuthGuard.ts
+++ b/src/auth/AuthGuard.ts
@@ -47,7 +47,7 @@ export default abstract class AuthGuard<P extends AuthProof> {
                 throw new Error('Unable to register user.');
             }
         } else if (registerCallback) {
-            throw new AuthError('User already exists.');
+            throw new UserAlreadyExistsAuthError(await proof.getEmail());
         }
 
         session.auth_id = user.id;
@@ -83,4 +83,13 @@ export class AuthError extends Error {
     constructor(message: string) {
         super(message);
     }
+}
+
+export class UserAlreadyExistsAuthError extends AuthError {
+    public readonly email: string;
+
+    constructor(userEmail: string) {
+        super(`User with email ${userEmail} already exists.`);
+        this.email = userEmail;
+    }
 }
\ No newline at end of file