package locker

import (
	"fmt"
	"os"
	"strings"
)

const PRIVATE_PREFIX = "PRIVATE__"

type PrivateSettings = map[string]string

var PrivateSettingsInstance *PrivateSettings

func Settings() *PrivateSettings {
	if PrivateSettingsInstance != nil {
		return PrivateSettingsInstance
	}
	settings := make(PrivateSettings)
	for _, env := range os.Environ() {
		if len(env) > len(PRIVATE_PREFIX) && env[:len(PRIVATE_PREFIX)] == PRIVATE_PREFIX {
			key := env[len(PRIVATE_PREFIX):strings.Index(env, "=")]
			value := os.Getenv(env[:strings.Index(env, "=")])
			settings[key] = value
		}
	}
	return &settings
}

func GetPrivateEnv(key string) string {
	settings := Settings()
	value := (*settings)[key]
	if value == "" {
		fmt.Println("No private variable found for " + key)
		return ""
	}
	return RSABase64Value(value).Decrypt()
}