package config

import (
	"errors"
	"fmt"
	"os"
	"strconv"
)

func InitializeConfig() error {
	if os.Getenv("TLM_SQLITE_PATH") != "" {
		SQLitePath = os.Getenv("TLM_SQLITE_PATH")
	} else {
		return errors.New("required env var is empty: TLM_SQLITE_PATH")
	}

	if os.Getenv("TLM_SMTP_FROM") != "" {
		SMTPFrom = os.Getenv("TLM_SMTP_FROM")
	} else {
		return errors.New("required env var is empty: TLM_SMTP_FROM")
	}

	if os.Getenv("TLM_SMTP_SERVER") != "" {
		SMTPServer = os.Getenv("TLM_SMTP_SERVER")
	} else {
		return errors.New("required env var is empty: TLM_SMTP_SERVER")
	}

	if os.Getenv("TLM_SMTP_VERIFYSSL") != "" {
		var err error
		SMTPVerifySSL, err = strconv.ParseBool(os.Getenv("TLM_SMTP_VERIFYSSL"))
		if err != nil {
			return errors.New(fmt.Sprintf("Invalid value for env var TLM_SMTP_VERIFYSSL: %v",
				os.Getenv("TLM_SMTP_VERIFYSSL")))
		}

	} else {
		SMTPVerifySSL = true
	}

	if os.Getenv("TLM_SMTP_PORT") != "" {
		var err error
		SMTPPort, err = strconv.Atoi(os.Getenv("TLM_SMTP_PORT"))
		if err != nil {
			return errors.New(fmt.Sprintf("Invalid value for env var TLM_SMTP_PORT: %v",
				os.Getenv("TLM_SMTP_PORT")))
		}
	} else {
		SMTPPort = 465
	}

	return nil
}