/*
   GoToSocial
   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Affero General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Affero General Public License for more details.

   You should have received a copy of the GNU Affero General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package email

import (
	"net/smtp"
)

const (
	confirmTemplate = "email_confirm.tmpl"
	confirmSubject  = "Subject: GoToSocial Email Confirmation"
)

func (s *sender) SendConfirmEmail(toAddress string, data ConfirmData) error {
	confirmBody, err := s.ExecuteTemplate(confirmTemplate, data)
	if err != nil {
		return err
	}

	msg := AssembleMessage(confirmSubject, confirmBody)

	return smtp.SendMail(s.hostAddress, s.auth, s.from, []string{toAddress}, msg)
}

// ConfirmData represents data passed into the confirm email address template.
type ConfirmData struct {
	// Username to be addressed.
	Username string
	// URL of the instance to present to the receiver.
	InstanceURL string
	// Name of the instance to present to the receiver.
	InstanceName string
	// Link to present to the receiver to click on and do the confirmation.
	// Should be a full link with protocol eg., https://example.org/confirm_email?token=some-long-token
	ConfirmLink string
}