package main

import (
	"encoding/json"
	"github.com/edindazdarevic/confighub/chub/globals"
	homedir "github.com/mitchellh/go-homedir"
	"io/ioutil"
	"os"
	"path/filepath"
)

type config struct {
	MachineGuid string
}

func configurationDirectoryName() string {
	directoryName, err := homedir.Dir()
	globals.PanicWithStyle("I cannot find your home directory. Are you homeless ? ", err)

	expandedDirectoryName, err := homedir.Expand(directoryName)
	globals.PanicWithStyle("Cannot know your full path to home directory. Is it a secret ? ", err)

	return expandedDirectoryName + globals.RuneToAscii(filepath.Separator) + globals.ConfigurationDirectoryName
}

func configurationFilePath() string {

	return configurationDirectoryName() + globals.RuneToAscii(filepath.Separator) + globals.ConfigurationFileName

}

func saveGuidToHomedir(configuration config) {
	directory := configurationDirectoryName()
	if !globals.FileExists(directory) {
		err := os.Mkdir(directory, globals.ConfigurationFilePermissions)
		globals.PanicWithStyle("I simply cannot make the directory. Am I alowed to ?", err)
	}

	configByteContent, err := json.Marshal(configuration)
	globals.PanicWithStyle("Something is terribly wrong. I am sorry. I am so so sorry. :~(", err)

	err = ioutil.WriteFile(configurationFilePath(), configByteContent, globals.ConfigurationFilePermissions)
	globals.PanicWithStyle("I cannot write to config file in user directory. How can this be ?", err)
}

func loadGuidFromHomedir() config {
	result := config{}

	file, err := ioutil.ReadFile(configurationFilePath())
	globals.PanicWithStyle("I cannot read config file in user directory. How can this be ?", err)

	json.Unmarshal(file, &result)
	return result

}