pye/config/config.go

package config

import (
	"encoding/json"
	"log/slog"
	"os"
)

type Config struct {
	Port       int    `json:"port"`
	KeyFile    string `json:"key-file"`
	SQLiteFile string `json:"sqlite-file"`
}

var DefaultConfig = Config{
	Port:       7102,
	KeyFile:    "private.key",
	SQLiteFile: "data.db",
}

var (
	DefaultLocation = "config.json"
	Cfg             Config
)

func LoadConfig(filename string) error {
	data, err := os.ReadFile(filename)
	if err != nil {
		return err
	}
	temp_config := DefaultConfig
	err = json.Unmarshal(data, &temp_config)
	if err != nil {
		return err
	}
	Cfg = temp_config
	slog.Info("Loaded config", "file", filename)
	return nil
}

func MustLoadConfig() {
	err := LoadConfig(DefaultLocation)
	if err != nil {
		slog.Error("error initially loading config", "error", err)
		os.Exit(1)
	}
}

func init() {
	MustLoadConfig()
}