feat: select optional sensors to read humidity or temperature

cmd/temperature/read.go

@@ -1,6 +1,7 @@
 package temperature
 
 import (
+	"fmt"
 	"log"
 	"os"
 
@@ -15,6 +16,7 @@ var follow, push bool
 var readTemperatureCmd = &cobra.Command{
 	Use:     "read",
 	Short:   "read temperature from sensor",
+	Example: fmt.Sprintf("flucky temperature read\nflucky temperature read outdoor"),
 	Run: func(cmd *cobra.Command, args []string) {
 
 		// read configuration
@@ -24,7 +26,7 @@ var readTemperatureCmd = &cobra.Command{
 		}
 
 		// fetch all temperature sensors
-		temperatureSensors, err := fc.GetTemperatureSensors()
+		temperatureSensors, err := fc.GetTemperatureSensors(args)
 		if err != nil {
 			log.Fatalln(err)
 		}

pkg/cli/cli.go

@@ -9,6 +9,63 @@ import (
 	"git.cryptic.systems/fh-trier/go-flucky/pkg/types"
 )
 
+func PrintHumidities(humidities []*types.Humidity, cnf *config.FluckyConfig, w io.Writer) {
+	// determine all humidity sensors based on the humidiy values
+	sensors := []*types.Sensor{}
+	for _, humidity := range humidities {
+		// Search for the sensor that has acquired the measured value
+		for _, sensor := range cnf.Sensors {
+			if sensor.SensorID == humidity.SensorID {
+				sensors = append(sensors, sensor)
+				break
+			}
+		}
+		// If it was not found, pass only the sensor with the UUID on
+		sensor := &types.Sensor{
+			SensorID: humidity.SensorID,
+		}
+		sensors = append(sensors, sensor)
+	}
+
+	// sort temperature values for every sensor
+	orderedHumidities := make(map[string][]*types.Humidity)
+	for _, humidity := range humidities {
+		orderedHumidities[humidity.SensorID] = append(orderedHumidities[humidity.SensorID], humidity)
+	}
+
+	// declare tabwriter
+	tw := tabwriter.NewWriter(w, 0, 0, 3, ' ', 0)
+
+	// headlines
+	for i, sensor := range sensors {
+		fmt.Fprintf(tw, "%v\t", sensor.Name())
+		if i == len(sensors)-1 {
+			fmt.Fprintf(tw, "\n")
+		}
+	}
+
+	// find sensor with maximum temperature values
+	maxLength := 0
+	for _, orderedHumidity := range orderedHumidities {
+		if len(orderedHumidity) > maxLength {
+			maxLength = len(orderedHumidity)
+		}
+	}
+
+	// body
+	for i := 0; i < maxLength; i++ {
+		for _, sensor := range sensors {
+			if len(orderedHumidities[sensor.SensorID]) > i {
+				fmt.Fprintf(tw, "%3.3f\t", orderedHumidities[sensor.SensorID][i].HumidityValue)
+			} else {
+				fmt.Fprint(tw, "\t")
+			}
+			fmt.Fprint(tw, "\n")
+		}
+	}
+	tw.Flush()
+}
+
 func PrintTemperatures(temperatures []*types.Temperature, cnf *config.FluckyConfig, w io.Writer) {
 
 	sensors := []*types.Sensor{}

pkg/config/fluckyconfig.go

@@ -11,7 +11,7 @@ import (
 	"git.cryptic.systems/fh-trier/go-flucky/pkg/sensor"
 
 	"git.cryptic.systems/fh-trier/go-flucky/pkg/types"
-	"github.com/satori/go.uuid"
+	uuid "github.com/satori/go.uuid"
 )
 
 // FluckyConfig dasd
@@ -205,9 +205,26 @@ func (fc *FluckyConfig) EnableSensor(nameOrUUID string) error {
 	return nil
 }
 
-func (fc *FluckyConfig) GetHumiditySensors() []sensor.HumiditySensor {
+func (fc *FluckyConfig) GetHumiditySensors(namesOrUUIDs []string) []sensor.HumiditySensor {
 	hs := []sensor.HumiditySensor{}
 	for _, s := range fc.Sensors {
+		// select only named sensors
+		if len(namesOrUUIDs) > 0 {
+			found := false
+			for _, nameOrUUID := range namesOrUUIDs {
+				if nameOrUUID == s.SensorID || nameOrUUID == s.SensorName {
+					found = true
+					break
+				}
+			}
+			if !found {
+				continue
+			}
+		}
+		// skip disabled sensors
+		if !s.SensorEnabled {
+			continue
+		}
 		switch s.SensorModel {
 		case types.DHT11:
 			hs = append(hs, &sensor.DHT11Sensor{
@@ -222,15 +239,26 @@ func (fc *FluckyConfig) GetHumiditySensors() []sensor.HumiditySensor {
 	return hs
 }
 
-func (fc *FluckyConfig) GetTemperatureSensors() ([]sensor.TemperatureSensor, error) {
+func (fc *FluckyConfig) GetTemperatureSensors(namesOrUUIDs []string) ([]sensor.TemperatureSensor, error) {
 	ts := []sensor.TemperatureSensor{}
-
 	for _, s := range fc.Sensors {
+		// select only named sensors
+		if len(namesOrUUIDs) > 0 {
+			found := false
+			for _, nameOrUUID := range namesOrUUIDs {
+				if nameOrUUID == s.SensorID || nameOrUUID == s.SensorName {
+					found = true
+					break
+				}
+			}
+			if !found {
+				continue
+			}
+		}
 		// skip disabled sensors
 		if !s.SensorEnabled {
 			continue
 		}
-
 		switch s.SensorModel {
 		case types.DHT11:
 			ts = append(ts, &sensor.DHT11Sensor{