Function generateRecoveryCodes

internal/database/two_factors.go:136–149

generateRecoveryCodes generates N number of recovery codes for 2FA.

(userID int64, n int)

// generateRecoveryCodes generates N number of recovery codes for 2FA.
func generateRecoveryCodes(userID int64, n int) ([]*TwoFactorRecoveryCode, error) {
	recoveryCodes := make([]*TwoFactorRecoveryCode, n)
	for i := 0; i < n; i++ {
		code, err := strutil.RandomChars(10)
		if err != nil {
			return nil, errors.Wrap(err, "generate random characters")
		}
		recoveryCodes[i] = &TwoFactorRecoveryCode{
			UserID: userID,
			Code:   strings.ToLower(code[:5] + "-" + code[5:]),
		}
	}
	return recoveryCodes, nil
}