package config

// this is an experiment at this point to
// see how this turns out

import (
	"errors"
	"fmt"
	"os"
	"path/filepath"
)

var configPB *Configs

// these are normally what are sent from ldflags
var APPNAME string
var BUILDTIME string
var VERSION string

var argv []string

func Init(appname, version, buildtime string, fromargv []string) error {
	APPNAME = appname
	VERSION = version
	BUILDTIME = buildtime
	argv = fromargv

	configDir, err := os.UserConfigDir()
	if err != nil {
		fmt.Println("OS isn't returning UserConfigDir()", err)
		return err
	}
	fullname := filepath.Join(configDir, appname, "config.text")
	configPB = NewConfigs()
	err = loadTEXT(configPB, fullname)
	if err == nil {
		return nil
	}

	if errors.Is(err, os.ErrNotExist) {
		// file doesn't exist, make a new file
		return makeNewConfigFile(appname)
	}
	if errors.Is(err, ErrEmpty) {
		fmt.Printf("config file size was empty. out of diskspace? %s\n", fullname)
		return err
	}
	fmt.Println("config.Init()", err)
	// panic("config")
	return err
}

func makeNewConfigFile(appname string) error {
	configDir, err := os.UserConfigDir()
	if err != nil {
		fmt.Println("OS isn't returning UserConfigDir()", err)
		return err
	}
	fullname := filepath.Join(configDir, appname, "config.text")

	configPB = NewConfigs()
	configPB.Filename = fullname

	newvar := new(Config)
	newvar.Key = "example config var"
	newvar.Value = "protobufs are neat"
	configPB.Clone(newvar)

	newvar.Key = "Verbose"
	newvar.Value = "true"
	configPB.Clone(newvar)

	// writes the config file to disk
	err = Save()
	return err
}