fix: sync and fetch temperatures

changes:
- add sync command to synchronize device sensor information with remote
  servers
- fix fetch functions to get temperatures

vendor/git.cryptic.systems/fh-trier/go-flucky-server/pkg/types/types.go

@@ -7,18 +7,13 @@ import (
 	"time"
 )
 
-// TypeObject ...
-type TypeObject interface {
-	EncodeToJSON(w io.Writer) error
-	DecodeFromJSON(r io.Reader) error
-}
-
 // Device ...
 type Device struct {
-	DeviceID       string    `json:"device_id"`
-	DeviceName     *string   `json:"device_name"`
-	DeviceLocation *string   `json:"device_location"`
-	CreationDate   time.Time `json:"creation_date"`
+	DeviceID          string    `json:"device_id"`
+	DeviceName        *string   `json:"device_name"`
+	DeviceLocation    *string   `json:"device_location"`
+	DeviceLastContact time.Time `json:"device_last_contact"`
+	CreationDate      time.Time `json:"creation_date"`
 }
 
 // EncodeToJSON needs a writer to write the struct into json string
@@ -72,14 +67,16 @@ func (h *Humidity) DecodeFromJSON(r io.Reader) error {
 
 // Sensor ...
 type Sensor struct {
-	SensorID       string    `json:"sensor_id"`
-	SensorName     *string   `json:"sensor_name"`
-	SensorLocation *string   `json:"sensor_location"`
-	WireID         *string   `json:"wire_id"`
-	GPIONumber     *string   `json:"gpio_number"`
-	SensorType     *string   `json:"sensor_type"`
-	DeviceID       string    `json:"device_id"`
-	CreationDate   time.Time `json:"creation_date"`
+	SensorID          string    `json:"sensor_id"`
+	SensorName        *string   `json:"sensor_name"`
+	SensorLocation    *string   `json:"sensor_location"`
+	WireID            *string   `json:"wire_id"`
+	GPIONumber        *string   `json:"gpio_number"`
+	SensorType        *string   `json:"sensor_type"`
+	SensorEnabled     *bool     `json:"sensor_enabled"`
+	SensorLastContact time.Time `json:"sensor_last_contact"`
+	DeviceID          string    `json:"device_id"`
+	CreationDate      time.Time `json:"creation_date"`
 }
 
 // EncodeToJSON needs a writer to write the struct into json string