lockserver/config/config.go

package config

import (
	"encoding/json"
	"errors"
	"os"

	"github.com/sirupsen/logrus"
)

type Config struct {
	ZWaveJSServer  string `json:"zwave-js-server"`
	SqliteDatabase string `json:"sqlite-database"`
	HTTPBind       string `json:"http-bind"`
}

var C = Config{
	ZWaveJSServer:  "ws://home-assistant:3000",
	SqliteDatabase: "/data/lockserver.db",
	HTTPBind:       ":8080",
}

var configFiles = []string{"lockserver.json", "/etc/lockserver.json"}

func Load() error {
	for _, path := range configFiles {
		err := load(path)
		if err != nil {
			if errors.Is(err, os.ErrNotExist) {
				continue
			}
			return err
		}
		logrus.WithField("file", path).Info("loaded config")
	}

	return nil
}

func load(path string) error {
	f, err := os.Open(path)
	if err != nil {
		return err
	}
	defer f.Close()

	if err := json.NewDecoder(f).Decode(&C); err != nil {
		return err
	}

	return nil
}