package utils

import (
	"errors"
	"github.com/mitchellh/mapstructure"
	"github.com/spf13/viper"
)

type ApplicationConfig struct {
	Token string `mapstructure:"token"`
}

type ApplicationsConfig map[string]*ApplicationConfig

var ErrCannotConvertConfig = errors.New("cannot convert config")

func GetApplicationsConfig() (ApplicationsConfig, error) {
	configRaw := viper.GetStringMap("applications")
	if configRaw == nil {
		return nil, ErrCannotConvertConfig
	}

	ret := make(ApplicationsConfig)
	for key, appConfigRaw := range configRaw {
		if appConfigMap, ok := appConfigRaw.(map[string]interface{}); ok {
			appConfig := new(ApplicationConfig)
			err := mapstructure.Decode(appConfigMap, appConfig)
			if err == nil {
				ret[key] = appConfig
			}
		}
	}

	return ret, nil
}