package config

import (
	"encoding/json"
	"io/ioutil"
	"os"
	"path/filepath"
	"runtime"

	"forge.lightcrystal.systems/nilix/underbbs/models"
)

func getConfigLocation() string {
	home := os.Getenv("HOME")
	appdata := os.Getenv("APPDATA")
	switch runtime.GOOS {
	case "windows":
		return filepath.Join(appdata, "underbbs")
	case "darwin":
		return filepath.Join(home, "Library", "Application Support", "underbbs")
	case "plan9":
		return filepath.Join(home, "lib", "underbbs")
	default:
		return filepath.Join(home, ".config", "underbbs")
	}
}

func ensureConfigLocationExists() {
	fileInfo, err := os.Stat(getConfigLocation())

	if os.IsNotExist(err) {
		os.MkdirAll(getConfigLocation(), os.ModePerm)
	} else if !fileInfo.IsDir() {
		panic("Config location is not a directory!")
	}
}

func LoadConfig() (models.GlobalSettings, error) {
	var settings models.GlobalSettings

	ensureConfigLocationExists()
	cfgdir := getConfigLocation()

	// get config from config fle based on adapter
	content, err := ioutil.ReadFile(filepath.Join(cfgdir, "config.json"))
	if err != nil {
		return settings, err
	}

	err = json.Unmarshal(content, &settings)
	if err != nil {
		return settings, err
	}
	return settings, nil
}