package communication

import (
	"code.lila.network/lauralani/tlm-login-server/internal/config"
	"code.lila.network/lauralani/tlm-login-server/internal/models"
	"crypto/tls"
	"github.com/go-mail/mail"
	"log/slog"
	"strings"
	"text/template"
)

func SendRegistrationNotification(user models.User, registrationsecet string) error {
	message := mail.NewMessage()

	message.SetHeader("From", config.SMTPFrom)
	message.SetHeader("To", user.Email)
	message.SetHeader("Subject", "Your Registration for TLM Nation")

	var data = registrationTemplateVars{
		BaseUrl:            config.BasePath,
		RegistrationSecret: registrationsecet,
	}

	plainstring := new(strings.Builder)
	texttemplate, err := template.New("registration.plain.tmpl").ParseFiles("internal/communication/templates/registration.plain.tmpl")
	if err != nil {
		slog.Error("Can't load template", "Template", "internal/communication/templates/registration.plain.tmpl")
		return err
	}
	err = texttemplate.Execute(plainstring, data)
	if err != nil {
		slog.Error("Can't execute template", "Template", "internal/communication/templates/registration.plain.tmpl")
		return err
	}

	message.SetBody("text/plain", plainstring.String())

	slog.Debug("got requested to send mail:", "FROM", config.SMTPFrom, "TO", user.Email)

	mailer := mail.NewDialer(config.SMTPServer, config.SMTPPort, config.SMTPUser, config.SMTPPassword)
	if !config.SMTPVerifySSL {
		mailer.TLSConfig = &tls.Config{InsecureSkipVerify: true}
	}

	err = mailer.DialAndSend(message)

	if err != nil {
		return err
	}

	return nil
}