// Loads ".env" file and provides environment variables as global values.
package config

import (
	"log"
	"os"
	"strings"

	"github.com/joho/godotenv"
)

// Mode represents the MODE environment variable
var Mode string

// Host represents the HOST environment variable
var Host string

// Url represents the URL environment variable
var Url string

// Email represents the EMAIL environment variable
var Email string

func loadEnv(target *string, name, defaultValue string) {
	value := os.Getenv(name)
	if len(strings.TrimSpace(value)) == 0 {
		*target = defaultValue
	} else {
		*target = value
	}
	log.Printf("%s = %v", name, *target)
}

// Load calls "godotenv.Load()" and sets all the above exported variables
func Load() {
	godotenv.Load()

	log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)

	loadEnv(&Mode, "MODE", "production")
	loadEnv(&Host, "HOST", "localhost:4000")
	loadEnv(&Url, "URL", "http://localhost:3000")
	loadEnv(&Email, "EMAIL", "mail@example.org")
}