otp validation is added

internal/delivery/handlers/smpp-otp-handlers.go

@@ -39,3 +39,24 @@ func (h *OTPHandler) GenerateAndSaveOTPHandler(w http.ResponseWriter, r *http.Re
 
 	w.WriteHeader(http.StatusOK)
 }
+
+func (h *OTPHandler) ValidateOTPHandler(w http.ResponseWriter, r *http.Request) {
+	decoder := json.NewDecoder(r.Body)
+	var request struct {
+		PhoneNumber string `json:"phone_number"`
+		OTP         string `json:"otp"`
+	}
+	err := decoder.Decode(&request)
+	if err != nil {
+		utils.RespondWithErrorJSON(w, http.StatusBadRequest, "Invalid request payload")
+		return
+	}
+
+	err = h.Service.ValidateOTP(request.PhoneNumber, request.OTP)
+	if err != nil {
+		utils.RespondWithErrorJSON(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	utils.RespondWithJSON(w, http.StatusOK, "OTP validated successfully")
+}

internal/delivery/routers/smpp-otp-routers.go

@@ -14,6 +14,7 @@ func SetupOTPRoutes(otpService service.OTPService, logger *logger.Loggers) http.
 	otpHandler := handlers.NewOTPHandler(otpService)
 
 	otpRouter.Post("/sendOTP", otpHandler.GenerateAndSaveOTPHandler)
+	otpRouter.Post("/validateOTP", otpHandler.ValidateOTPHandler)
 
 	return otpRouter
 }

internal/repository/interfaces/otp-smpp-repository.go

@@ -1,5 +1,9 @@
 package repository
 
+import "time"
+
 type OTPRepository interface {
 	SaveOTP(phoneNumber string, otp string) error
+	GetOTP(phoneNumber string) (string, error)
+	GetOTPTimestamp(phoneNumber string) (time.Time, error)
 }

internal/repository/smpp-otp-repository.go

@@ -28,17 +28,30 @@ func GenerateOTP() string {
 }
 
 func (r *OTPRepository) SaveOTP(phoneNumber string, otp string) error {
-	err := r.Client.Watch(func(tx *redis.Tx) error {
+	err := r.Client.Set(phoneNumber, otp, 5*time.Minute).Err()
-		err := tx.Set(phoneNumber, otp, 0).Err()
 	if err != nil {
 		r.logger.ErrorLogger.Error("Error setting up values into redis: %v", err)
 		return err
 	}
 	return nil
-	}, phoneNumber)
+}
 
+func (r *OTPRepository) GetOTP(phoneNumber string) (string, error) {
+	otp, err := r.Client.Get(phoneNumber).Result()
 	if err != nil {
-		return err
+		return "", err
 	}
-	return nil
+	return otp, nil
+}
+
+func (r *OTPRepository) GetOTPTimestamp(phoneNumber string) (time.Time, error) {
+	timestamp, err := r.Client.Get(phoneNumber + ":timestamp").Result()
+	if err != nil {
+		return time.Time{}, err
+	}
+	t, err := time.Parse(time.RFC3339, timestamp)
+	if err != nil {
+		return time.Time{}, err
+	}
+	return t, nil
 }

internal/service/interfaces/smpp-otp-service.go

@@ -6,4 +6,5 @@ import (
 
 type OTPService interface {
 	GenerateAndSendOTP(cfg config.Config, phoneNumber string) error
+	ValidateOTP(phoneNumber string, otp string) error
 }

internal/service/smpp-otp-service.go

@@ -32,3 +32,20 @@ func (s *OTPService) GenerateAndSaveOTP(phoneNumber string) error {
 	}
 	return nil
 }
+
+func (s *OTPService) ValidateOTP(phoneNumber string, otp string) error {
+	storedOTP, err := s.repository.GetOTP(phoneNumber)
+	if err != nil {
+		if err.Error() == "redis: nil" {
+			return fmt.Errorf("OTP not found or expired")
+		}
+		s.logger.ErrorLogger.Error("Error retrieving OTP from repository: %v", err)
+		return err
+	}
+
+	if storedOTP != otp {
+		return fmt.Errorf("OTP does not match")
+	}
+
+	return nil
+}

logs/Error.log

@@ -0,0 +1,3 @@
+time=2024-03-28T00:07:01.216+05:00 level=ERROR msg="Error retrieving OTP timestamp from repository: %v" !BADKEY="redis: nil"
+time=2024-03-28T00:09:57.336+05:00 level=ERROR msg="Error retrieving OTP timestamp from repository: %v" !BADKEY="redis: nil"
+time=2024-03-28T00:19:15.421+05:00 level=ERROR msg="Error retrieving OTP timestamp from repository: %v" !BADKEY="redis: nil"

logs/Info.log

@@ -2,3 +2,8 @@ time=2024-03-27T23:24:15.715+05:00 level=INFO msg="Shutting down the server grac
 time=2024-03-27T23:31:35.765+05:00 level=INFO msg="Shutting down the server gracefully..."
 time=2024-03-27T23:39:10.332+05:00 level=INFO msg="Server is up and running"
 time=2024-03-27T23:39:22.414+05:00 level=INFO msg="Shutting down the server gracefully..."
+time=2024-03-28T00:06:29.253+05:00 level=INFO msg="Server is up and running"
+time=2024-03-28T00:18:28.728+05:00 level=INFO msg="Shutting down the server gracefully..."
+time=2024-03-28T00:18:31.350+05:00 level=INFO msg="Server is up and running"
+time=2024-03-28T00:20:32.122+05:00 level=INFO msg="Shutting down the server gracefully..."
+time=2024-03-28T00:20:34.708+05:00 level=INFO msg="Server is up and running"