package main

import (
    "log"
    "flag"
    "os"
    "path/filepath"

    "github.com/BurntSushi/toml"
)

type Config struct {
    Database DatabaseConfig
}

type DatabaseConfig struct {
    Type string
}

var ConfigFolder string
var ConfigFilename string

var Configuration Config

func init() {
    const baseFolder string = "jdr"

    dir, varSet := os.LookupEnv("XDG_CONFIG_HOME")
    if varSet {
        ConfigFolder = filepath.Join(dir, baseFolder)
    } else {
        dir, varSet = os.LookupEnv("HOME")
        if !varSet {
            log.Fatal("Cannot find a config folder")
        }

        ConfigFolder = filepath.Join(dir, "." + baseFolder)
    }
}

func ParseArguments() {
    log.Println("Parsing arguments")

    flag.StringVar(&ConfigFilename, "config", filepath.Join(ConfigFolder, "config.toml"), "configuration file")
    flag.Parse()
}

func LoadConfig() {
    configFilename, err := filepath.Abs(ConfigFilename)
    if err != nil {
        log.Fatal(err)
    }

    log.Println("Loading config from", configFilename)
    _, err = toml.DecodeFile(configFilename, &Configuration)
    if err != nil {
        log.Fatal(err)
    }

    log.Println(Configuration.Database.Type)
}