moved all validation and parsing from handler to service layer

internal/domains/sensors/service.go

@@ -2,6 +2,7 @@ package sensors
 
 import (
 	"log/slog"
+	"strings"
 	"time"
 )
 
@@ -16,20 +17,32 @@ func NewService(repo Repository) *Service {
 }
 
 func (s *Service) RegisterSensor(sensor Sensor) error {
+	if err := sensor.Validate(); err != nil {
+		slog.Error("error validating sensor", "error", err)
+		return err
+	}
 
 	err := s.repo.CreateSensor(sensor)
 	if err != nil {
 		slog.Error("error registering sensor", "error", err)
-		return err
+		if strings.Contains(err.Error(), "duplicate key value") {
+			return ErrSensorAlreadyExists
+		}
+		return ErrRegisteringSensor
 	}
 
 	return nil
 }
 
 func (s *Service) RegisterSensorData(data SensorData) error {
+	if err := data.Validate(); err != nil {
+		slog.Error("error validating sensor data", "error", err)
+		return err
+	}
+
 	err := s.repo.CreateSensorData(data)
 	if err != nil {
-		slog.Error("error registering sensor data")
+		slog.Error("error registering sensor data", "error", err)
 		return err
 	}
 
@@ -37,15 +50,51 @@ func (s *Service) RegisterSensorData(data SensorData) error {
 }
 
 func (s *Service) UpdateSensor(sensor Sensor) error {
-	return s.repo.UpdateSensor(sensor)
+	if err := sensor.Validate(); err != nil {
+		slog.Error("error validating sensor data", "error", err)
+		return err
+	}
+
+	err := s.repo.UpdateSensor(sensor)
+	if err != nil {
+		slog.Error("error updating sensor", "error", err)
+		if strings.Contains(err.Error(), "duplicate key value") {
+			return ErrSensorAlreadyExists
+		}
+		return ErrUpdatingSensor
+	}
+
+	return nil
 }
 
-func (s *Service) GetSensor(sensorID string) (Sensor, error) {
-	return s.repo.ReadSensor(sensorID)
+func (s *Service) GetSensor(sensor SensorRequest) (Sensor, error) {
+	if err := sensor.Validate(); err != nil {
+		slog.Error("error getting sensor", "error", err)
+		return Sensor{}, err
+	}
+
+	return s.repo.ReadSensor(sensor.SensorID)
 }
 
-func (s *Service) GetValues(sensorID string, from, to time.Time) ([]SensorData, error) {
-	return s.repo.ReadSensorValues(sensorID, from, to)
+func (s *Service) GetValues(sensor SensorDataRequest) ([]SensorData, error) {
+	if err := sensor.Validate(); err != nil {
+		slog.Error("error validating sensor data request", "error", err)
+		return []SensorData{}, err
+	}
+
+	from, err := time.Parse(time.RFC3339, *sensor.From)
+	if err != nil {
+		slog.Error("error parsing from date", "error", err)
+		return []SensorData{}, err
+	}
+
+	to, err := time.Parse(time.RFC3339, *sensor.To)
+	if err != nil {
+		slog.Error("error parsing to date", "error", err)
+		return []SensorData{}, err
+	}
+
+	return s.repo.ReadSensorValues(sensor.SensorID, from, to)
 }
 
 func (s *Service) ListSensors() ([]Sensor, error) {