package service

import (
	"fmt"
	"net/smtp"

	"me-fit/types"
	"me-fit/utils"
)

type MailService interface {
	// Sending an email is a fire and forget operation. Thus no error handling
	SendMail(to string, subject string, message string)
}

type MailServiceImpl struct {
	serverSettings *types.ServerSettings
}

func NewMailServiceImpl(serverSettings *types.ServerSettings) MailServiceImpl {
	return MailServiceImpl{serverSettings: serverSettings}
}

func (m MailServiceImpl) SendMail(to string, subject string, message string) {
	if m.serverSettings.Smtp == nil {
		return
	}

	s := m.serverSettings.Smtp

	auth := smtp.PlainAuth("", s.User, s.Pass, s.Host)

	msg := fmt.Sprintf("From: %v <%v>\nTo: %v\nSubject: %v\nMIME-version: 1.0;\nContent-Type: text/html; charset=\"UTF-8\";\n\n%v", s.FromName, s.FromMail, to, subject, message)

	err := smtp.SendMail(s.Host+":"+s.Port, auth, s.FromMail, []string{to}, []byte(msg))
	if err != nil {
		utils.LogError("Error sending mail: %v", err)
	}
}