package config

import (
	"fmt"
	"os"

	"github.com/spf13/viper"
)

func InitConfig(cfgFile string) func() {
	return func ()  {
		if cfgFile != "" {
	  	// Use config file from the flag.
	  	viper.SetConfigFile(cfgFile)
	  } else {
	  	// Search config in home directory with name ".mcd" (without extension).
	  	viper.AddConfigPath(".")
	  	viper.SetConfigType("toml")
	  	viper.SetConfigName("mcd")
	  }
		viper.SetEnvPrefix("MCD")

	  viper.AutomaticEnv() // read in environment variables that match

	  // If a config file is found, read it in.
	  if err := viper.ReadInConfig(); err == nil {
	  	fmt.Fprintln(os.Stderr, "Using config file:", viper.ConfigFileUsed())
	  }	
		viper.SetDefault("java.path", "/usr/bin/java")
		viper.SetDefault("java.args", []string{"-Xms2G", "-Xmx3G"})
		viper.SetDefault("server.jar", "./server.jar")
	}
}