label_printer/config/config.go

package config

import (
	"log"
	"os"

	"github.com/BurntSushi/toml"
	"github.com/adrg/xdg"
)

type Toplevel struct {
	Ntfy    Ntfy    `toml:"ntfy"`
	Matrix  Matrix  `toml:"matrix"`
	Devices Devices `toml:"devices"`
}

type Ntfy struct {
	Host        string           `toml:"host"`
	AccessToken string           `toml:"access_token"`
	Topics      map[string]Topic `toml:"topics"`
}

type Topic struct {
	Name string `toml:"name"`
}

type Matrix struct {
	UserID      string                `toml:"user_id"`
	DeviceID    string                `toml:"device_id"`
	AccessToken string                `toml:"access_token"`
	AdminRoom   string                `toml:"admin_room"`
	Users       map[string]MatrixUser `toml:"users"`
	FeelgoodKey string                `toml:"feelgood_key"`
	Database    string                `toml:"database"`
	MautrixLog  string                `toml:"mautrix_log"`
}

type MatrixUser struct{}

type Devices struct {
	Printer  string `toml:"printer"`
	Keyboard string `toml:"keyboard"`
}

func open(altpath string) *os.File {
	if altpath != "" {
		file, err := os.Open(altpath)
		if err != nil {
			log.Fatalf("unable to open %s: %v\n", altpath, file)
		}

		return file
	}

	path, err := xdg.SearchConfigFile("faxmachine/config.toml")
	if err != nil {
		log.Fatalf("unable to locate config: %v\n", err)
	}

	file, err := os.Open(path)
	if err != nil {
		log.Fatalf("unable to open %s: %v\n", path, file)
	}

	return file
}

func Load(altpath string) *Toplevel {
	file := open(altpath)

	decoder := toml.NewDecoder(file)

	var toplevel Toplevel
	_, err := decoder.Decode(&toplevel)
	if err != nil {
		log.Fatalf("failed to parse config: %v\n", err)
	}

	return &toplevel
}