package configutils

import (
	"encoding/json"
	"log"
	"os"
)

var (
	// Conf stores configuration for global access
	Conf *Configuration
)

// Configuration defines the configuration structure
type Configuration struct {
	DBHost         string
	DBUser         string
	DBPass         string
	DBName         string
	CryptoKey      string
	ClientID       string
	ClientSecret   string
	CryptoStrength int
	AuthURL        string
	// TODO dynamic fields, map string string
}

// ReadConfig reads the config file and returns a Configuration object
func ReadConfig(filename string) Configuration {
	file, err := os.Open(filename)
	if err != nil {
		log.Println("Failed reading configuration:", err)
	}

	decoder := json.NewDecoder(file)
	configuration := Configuration{}
	err = decoder.Decode(&configuration)
	if err != nil {
		log.Println("Failed parsing configuration:", err)
	}

	//log.Printf("%#v", configuration) // DEBUG

	return configuration
}