package socket

import (
	"JISQueueing/common"
	"bytes"
	"encoding/base64"
	"html/template"
	"net/smtp"
	"strings"
)

var (
	bodyT = ``
	t, _  = template.New("email").Parse(bodyT)
)

func sendThankYouEmail(ticket common.Ticket) {
	buffer := new(bytes.Buffer)
	t.Execute(buffer, ticket)
	body := buffer.String()
	SendMail(
		"mail1.jisedu.or.id:25",
		"IT.Q@jisedu.or.id",
		"Thank you for coming to the JIS IT Helpdesk",
		body,
		[]string{ticket.Email},
	)
}

func	 SendMail(addr, from, subject, body string, to []string) error {
	r := strings.NewReplacer("\r\n", "", "\r", "", "\n", "", "%0a", "", "%0d", "")

	c, err := smtp.Dial(addr)
	if err != nil {
		return err
	}
	defer c.Close()
	if err = c.Mail(r.Replace(from)); err != nil {
		return err
	}
	for i := range to {
		to[i] = r.Replace(to[i])
		if err = c.Rcpt(to[i]); err != nil {
			return err
		}
	}

	w, err := c.Data()
	if err != nil {
		return err
	}

	msg := "To: " + strings.Join(to, ",") + "\r\n" +
			"From: " + from + "\r\n" +
			"Subject: " + subject + "\r\n" +
			"Content-Type: text/html; charset=\"UTF-8\"\r\n" +
			"Content-Transfer-Encoding: base64\r\n" +
			"\r\n" + base64.StdEncoding.EncodeToString([]byte(body))

	_, err = w.Write([]byte(msg))
	if err != nil {
		return err
	}
	err = w.Close()
	if err != nil {
		return err
	}
	return c.Quit()
}