fix(provider): minor fix in otp strategy (#70)

minor fix in OTP strategy, and added few error keys

gh-69

Author: AnkurBansalSF

src/error-keys.ts

@@ -9,4 +9,7 @@ export const enum AuthErrorKeys {
   InvalidCredentials = 'Invalid Credentials',
   UnknownError = 'Unknown Error',
   WrongPassword = 'Incorrect Password',
+  KeyInvalid = 'Key Invalid',
+  OtpInvalid = 'Otp Invalid',
+  OtpExpired = 'Otp Token Incorrect or Expired',
 }

src/strategies/passport/passport-otp/otp-auth.ts

@@ -37,7 +37,7 @@ export namespace Otp {
       const key = req.body.key || options?.key;
       const otp = req.body.otp || options?.otp;
 
-      if (!key || !otp) {
+      if (!key) {
         this.fail();
         return;
       }