package config

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"os"
)

type Config struct {
	WebPort     string `json:"web_port"`
	SqlAddr     string `json:"sql_addr"`
	SqlDBName   string `json:"sql_db_name"`
	SqlUsername string `json:"sql_username"`
	SqlPassword string `json:"sql_password"`
}

const configPath = "config.json"

var Options Config

// Init is an exported method that takes the environment starts the viper
// (external lib) and returns the configuration struct.
func init() {
}

func Load() {
	if !pathExists(configPath) {
		SaveConfig()
	} else {
		file, _ := os.Open(configPath)
		defer file.Close()

		fd := json.NewDecoder(file)

		fd.Decode(&Options)

		fmt.Printf("%v\n", Options)
	}
}

func SaveConfig() error {
	b, err := json.Marshal(Options)
	if err == nil {
		var out bytes.Buffer
		err = json.Indent(&out, b, "", "    ")
		ioutil.WriteFile(configPath, out.Bytes(), 0644)
	}

	return err
}

func pathExists(path string) bool {
	_, err := os.Stat(path)
	if err == nil {
		return true
	}

	fmt.Printf("%v", err.Error())
	return false
}