package config

import (
	"github.com/rogeecn/atom/container"
	"github.com/spf13/viper"
)

func Load(file, app string) (*viper.Viper, error) {
	v := viper.NewWithOptions(viper.KeyDelimiter("_"))
	v.AutomaticEnv()

	if file == "" {
		v.SetConfigType("toml")
		v.SetConfigName(app)
		v.AddConfigPath("/etc")
		v.AddConfigPath("/usr/local/etc")
	} else {
		v.SetConfigFile(file)
	}

	if err := v.ReadInConfig(); err != nil {
		return nil, err
	}
	err := container.Container.Provide(func() (*viper.Viper, error) {
		return v, nil
	})
	if err != nil {
		return nil, err
	}

	return v, nil
}