package config

import (
	"log"
	"os"
	"strings"

	"github.com/spf13/viper"
)

func ConfigDir() string {
	env := os.Getenv("CONFIG_PATH")
	if env != "" {
		return env
	}
	return "."
}

func Init() {
	// Read global config
	viper.SetConfigName("config")
	viper.SetConfigType("yaml")
	viper.AddConfigPath(ConfigDir())

	// Bind ENV
	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
	viper.AutomaticEnv()

	if err := viper.ReadInConfig(); err != nil {
		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
			log.Println("[Config] No config file found, using Env vars only.")
		} else {
			log.Fatalf("[Config] Fatal error reading config file: %s \n", err)
		}
	}

	conf := &config{}
	if err := viper.Unmarshal(conf); err != nil {
		log.Fatalln("[Condig] Can't unmarshal config!")
	}
}