/*
 * Copyright (C) 2023 Jonni Liljamo <jonni@liljamo.com>
 *
 * This file is licensed under GPL-3.0-or-later, see NOTICE and LICENSE for
 * more information.
 */
package util

import (
	"log"
	"os"
	"strconv"
)

func LoadEnvStr(key string, def string) string {
	value, found := os.LookupEnv(key)
	if found {
		return value
	}

	if def == "" {
		log.Fatalf("[erya] Environment variable %s is empty, and has no default", key)
	} else {
		log.Printf("[erya] Environment variable %s is empty, using default '%s'", key, def)
	}
	return def
}

func LoadEnvInt32(key string, def int32) int32 {
	value, found := os.LookupEnv(key)
	if found {
		res, err := strconv.ParseInt(value, 10, 32)
		if err != nil {
			log.Fatalf("[erya] Environment variable %s failed to parse to int32 from '%s'", key, value)
		}
		return int32(res)
	}

	log.Printf("[erya] Environment variable %s is empty, using default '%d'", key, def)
	return def
}

func LoadEnvBool(key string, def bool) bool {
	value, found := os.LookupEnv(key)
	if found {
		res, err := strconv.ParseBool(value)
		if err != nil {
			log.Fatalf("[erya] Environment variable %s failed to parse to bool from '%s'", key, value)
		}
		return res
	}

	log.Printf("[erya] Environment variable %s is empty, using default '%t'", key, def)
	return def
}