feat: send proper status when integration not found

data/device_database.go

@@ -122,6 +122,15 @@ func (db *DeviceDatabase) CreateIntegration(name, token string) (string, error)
 	return id, nil
 }
 
+func (db *DeviceDatabase) IntegrationIdExists(id string) (bool, error) {
+	var exists bool
+	err := db.Connection.QueryRow("SELECT EXISTS(SELECT 1 FROM integrations WHERE id = ?)", id).Scan(&exists)
+	if err != nil {
+		return false, err
+	}
+	return exists, nil
+}
+
 func (db *DeviceDatabase) GetIntegration(id string) (*Integration, error) {
 	var integration Integration
 	err := db.Connection.QueryRow("SELECT id, name FROM integrations WHERE id = ?", id).Scan(&integration.ID, &integration.Name)

management/device_manager.go

@@ -146,6 +146,14 @@ func (dm *DeviceManager) DeleteIntegration(id string) error {
 	return error
 }
 
+func (dm *DeviceManager) IntegrationIdExists(id string) (bool, error) {
+	exists, error := dm.deviceDatabase.IntegrationIdExists(id)
+	if error != nil {
+		return false, error
+	}
+	return exists, nil
+}
+
 func (dm *DeviceManager) checkCode(code string) bool {
 	for _, c := range dm.registrationCodes {
 		if c == code {

server/device_api_handler.go

@@ -83,11 +83,21 @@ func (r *DeviceApiHandler) handleCreateIntegration(context echo.Context) error {
 func (r *DeviceApiHandler) handleGetIntegration(context echo.Context) error {
 	id := context.Param("id")
 
-	integration, error := r.deviceManager.GetIntegration(id)
+	exists, err := r.deviceManager.IntegrationIdExists(id)
+	if err != nil {
+		SendError(500, context, fmt.Sprintf("Failed to get integration: %s", err))
+		return err
+	}
+	if !exists {
+		SendError(404, context, fmt.Sprintf("integration with id %s does not exist", id))
+		return err
+	}
 
-	if error != nil {
-		SendError(500, context, fmt.Sprintf("Failed to get integration: %s", error))
-		return error
+	integration, err := r.deviceManager.GetIntegration(id)
+
+	if err != nil {
+		SendError(500, context, fmt.Sprintf("Failed to get integration: %s", err))
+		return err
 	}
 
 	integrationData := struct {