Generate HTTP endpoints for environment sensors

- Move update request sanity checks to new method in handlers/util.go
- Change EnvironmentSensor.Value type because ParseFloat returns float64

main.go

@@ -1,10 +1,12 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"net/http"
 	"os"
 	"os/signal"
+	"strings"
 	"syscall"
 
 	"gitlab.hamburg.ccc.de/ccchh/spaceapid/config"
@@ -37,6 +39,19 @@ func main() {
 	http.HandleFunc("/state/open",
 		handlers.StateOpen(conf.Credentials, conf.Dynamic.State.Open.AllowedCredentials, &conf.Response),
 	)
+	// Register handlers for Environmental Sensors
+	for key, envSensorConfigs := range conf.Dynamic.Sensors {
+		for i, envSensorConfig := range envSensorConfigs {
+			http.HandleFunc(
+				strings.ToLower(fmt.Sprintf(
+					"/sensors/%s/%s/%s", key, envSensorConfig.SensorData.Location, envSensorConfig.SensorData.Name,
+				)),
+				handlers.EnvironmentSensor(
+					conf.Credentials, envSensorConfig.AllowedCredentials, &conf.Response.Sensors[key][i],
+				),
+			)
+		}
+	}
 
 	// Start webserver
 	log.Println("Starting HTTP server...")