feat(handlers): Handle DELETE for environment sensors

It now works as advertised in the README! *ahem*...

handlers/sensors.go

@@ -11,7 +11,7 @@ import (
 	"git.hamburg.ccc.de/ccchh/spaceapid/types"
 )
 
-func EnvironmentSensor(
+func EnvironmentSensorPUT(
 	authDB config.HTTPBACredentials, validCredentials []config.HTTPBACredentialID,
 	resp *types.EnvironmentSensor,
 ) func(http.ResponseWriter, *http.Request) {
@@ -35,3 +35,20 @@ func EnvironmentSensor(
 		resp.LastChange = time.Now().Unix()
 	}
 }
+
+func EnvironmentSensorDELETE(
+	authDB config.HTTPBACredentials, validCredentials []config.HTTPBACredentialID,
+	resp *types.EnvironmentSensor,
+) func(http.ResponseWriter, *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		_, err := updateEndpointValidator(authDB, validCredentials, w, r)
+		if err != nil {
+			log.Println(err)
+			return
+		}
+
+		// Set SpaceAPI response values
+		resp.Value = 0
+		resp.LastChange = time.Now().Unix()
+	}
+}

main.go

@@ -68,12 +68,18 @@ func main() {
 	// Register handlers for environmental sensors
 	for sensorType, envSensorConfigs := range conf.Dynamic.Sensors {
 		for i, envSensorConfig := range envSensorConfigs {
-			urlPattern := "PUT " + util.GetSensorURLPath(
+			urlPattern := util.GetSensorURLPath(
 				sensorType, envSensorConfig.SensorData.Location, envSensorConfig.SensorData.Name,
 			)
 			http.HandleFunc(
-				urlPattern,
+				"PUT "+urlPattern,
-				handlers.EnvironmentSensor(
+				handlers.EnvironmentSensorPUT(
+					conf.Credentials, envSensorConfig.AllowedCredentials, &conf.Response.Sensors[sensorType][i],
+				),
+			)
+			http.HandleFunc(
+				"DELETE "+urlPattern,
+				handlers.EnvironmentSensorDELETE(
 					conf.Credentials, envSensorConfig.AllowedCredentials, &conf.Response.Sensors[sensorType][i],
 				),
 			)