package main

import (
	"bytes"
	"io/ioutil"
	"strings"

	"github.com/BurntSushi/toml"
)

func NewSongbookConfig(dir string) {
	sc := &SongbookConfig{ConfigPath: dir + "songbook.toml"}
	err := sc.Load()
	return sc, err
}

type SongbookConfig struct {
	Username   string `toml:"username"`
	Password   string `toml:"enc_pw"`
	ConfigPath string `toml:"-"`
}

func (sc *SongbookConfig) Load() error {
	tomlData, err := ioutil.ReadFile(sc.ConfigPath)
	if err != nil {
		// Couldn't find the file, save a new one
		if err = sc.Save(); err != nil {
			return err
		}
	}
	if _, err := toml.Decode(string(tomlData), &sc); err != nil {
		return err
	}
	return nil
}

func (sc *SongbookConfig) Save() error {
	buf := new(bytes.Buffer)
	if err := toml.NewEncoder(buf).Encode(sc); err != nil {
		return err
	}
	return ioutil.WriteFile(sc.ConfigPath, buf.Bytes(), 0644)
}

func NewModel(dir string) *model {
	m := new(model)
	m.config = NewSongbookConfig(dir)
	return m
}

type model struct {
	config *SongbookConfig
}

func (m *model) hasUser() bool {
	// is there a user in the config?
	if strings.TrimSpace(m.config.Username) == "" || strings.TrimSpace(m.Config.Password) == "" {
		return false
	}
	return true
}