go rewrite

internal/config/config.go

@@ -0,0 +1,29 @@
+package config
+
+import (
+	"encoding/json"
+	"os"
+
+	"gomon/internal/logger"
+	"gomon/internal/model"
+)
+
+// Load loads the battery configuration from a file.
+func Load(filename string) (model.BatteryConfig, error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		logger.Error("Failed to open file")
+		return model.BatteryConfig{}, err
+	}
+	defer file.Close()
+
+	var config model.BatteryConfig
+	decoder := json.NewDecoder(file)
+	err = decoder.Decode(&config)
+	if err != nil {
+		logger.Error("Failed to decode JSON")
+		return model.BatteryConfig{}, err
+	}
+
+	return config, nil
+}