package config

import (
	"fmt"
	"os"
	"path"

	"github.com/BurntSushi/toml"
	"github.com/mitchellh/go-homedir"
)

var (
	configPath string

	// Config items
	Origin   string
	Upstream string
	Tokens   []Token
)

type config struct {
	Origin   string  `toml:"origin"`
	Upstream string  `toml:"upstream"`
	Tokens   []Token `toml:"token"`
}

type Token struct {
	Name  string `toml:"name"`
	URL   string `toml:"url"`
	Token string `toml:"token"`
}

// Load on init so that CLI contexts are correctly populated
func Init() error {
	home, err := homedir.Dir()
	if err != nil {
		return err
	}
	configPath = fmt.Sprintf("%s/.sip/config.toml", home)

	if _, err := os.Stat(configPath); os.IsNotExist(err) {
		if err := os.MkdirAll(path.Dir(configPath), os.ModePerm); err != nil {
			return err
		}

		if _, err := os.Create(configPath); err != nil {
			return err
		}
	}

	var cfg config
	if _, err := toml.DecodeFile(configPath, &cfg); err != nil {
		return err
	}

	Origin = cfg.Origin
	Upstream = cfg.Upstream
	Tokens = cfg.Tokens
	return nil
}

func Save() error {
	cfg := config{
		Origin:   Origin,
		Upstream: Upstream,
		Tokens:   Tokens,
	}

	fi, err := os.Create(configPath)
	if err != nil {
		return err
	}

	if err := toml.NewEncoder(fi).Encode(cfg); err != nil {
		return err
	}

	return fi.Close()
}