fix: breaking changes

changes:
- remove remote operations
- add function to write measured values into a channel
- add get humidity sensors from config
- add get temperature sensors from config
- remove FileLogger
- exclude some functions from pkf into internal

pkg/config/config.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -10,9 +11,9 @@ import (
 var validUUID = regexp.MustCompile("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$")
 
 // Read the configuration file
-func Read(configFile string) (*FluckyConfig, error) {
+func Read(configFile string) (*Configuration, error) {
 
-	fc := &FluckyConfig{}
+	fc := &Configuration{}
 
 	f, err := os.Open(configFile)
 	if err != nil {
@@ -20,9 +21,9 @@ func Read(configFile string) (*FluckyConfig, error) {
 	}
 	defer f.Close()
 
-	err = fc.JSONDecoder(f)
-	if err != nil {
-		return nil, fmt.Errorf("Can not decode json file %v: %v", configFile, err)
+	jsonDecoder := json.NewDecoder(f)
+	if err := jsonDecoder.Decode(&fc); err != nil {
+		return nil, fmt.Errorf("Can not unmarshal JSON: %v", err)
 	}
 
 	return fc, nil
@@ -30,7 +31,7 @@ func Read(configFile string) (*FluckyConfig, error) {
 }
 
 // Write the configuration into a file, specified by the configuration filepath
-func Write(cfg *FluckyConfig, configFile string) error {
+func Write(cfg *Configuration, configFile string) error {
 
 	if _, err := os.Stat(configFile); os.IsNotExist(err) {
 		configDir := filepath.Dir(configFile)
@@ -46,9 +47,11 @@ func Write(cfg *FluckyConfig, configFile string) error {
 	}
 	defer f.Close()
 
-	err = cfg.JSONWriter(f)
+	encoder := json.NewEncoder(f)
+	encoder.SetIndent("", "  ")
+	err = encoder.Encode(cfg)
 	if err != nil {
-		return err
+		return fmt.Errorf("Error in encoding struct to json: %v", err)
 	}
 
 	return nil