package cmd

import (
	"crypto/tls"
	"fmt"
	"log"
	"net/smtp"
	"strings"

	"github.com/sirupsen/logrus"
	"github.com/spf13/cobra"
)

var TestCmd = &cobra.Command{
	Use:   "test",
	Short: "sends an email through the configured server",
	Long:  ``,
	Args:  cobra.ExactArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		if cfg.Test == nil {
			logrus.Fatal("you need to specify a `test` config block")
		}

		tlsConfig := &tls.Config{
			InsecureSkipVerify: true,
			ServerName:         strings.Split(cfg.Test.Address, ":")[0],
		}

		conn, err := tls.Dial("tcp", cfg.Test.Address, tlsConfig)
		if err != nil {
			log.Panic(err)
		}

		c, err := smtp.NewClient(conn, strings.Split(cfg.Test.Address, ":")[0])
		if err != nil {
			log.Panic(err)
		}

		headers := make(map[string]string)
		headers["From"] = cfg.Test.Username
		headers["To"] = args[0]
		headers["Subject"] = "This is a test email from the command line"

		message := ""
		for k, v := range headers {
			message += fmt.Sprintf("%s: %s\r\n", k, v)
		}
		message += "\r\n"

		message += "This is a test email message sent through the command line utility."

		auth := smtp.PlainAuth("", cfg.Test.Username, cfg.Test.Password, strings.Split(cfg.Test.Address, ":")[0])

		if err = c.Auth(auth); err != nil {
			logrus.WithError(err).Fatal("could not authenticate to server")
		}

		if err = c.Mail(cfg.Test.Username); err != nil {
			logrus.WithError(err).Fatal("could not create email")
		}

		if err = c.Rcpt(args[0]); err != nil {
			logrus.WithError(err).Fatal("could not set email destination")
		}

		w, err := c.Data()
		if err != nil {
			logrus.WithError(err).Fatal("could not set email data")
		}

		_, err = w.Write([]byte(message))
		if err != nil {
			logrus.WithError(err).Fatal("could not set email data")
		}

		err = w.Close()
		if err != nil {
			logrus.WithError(err).Fatal("close email")
		}

		c.Quit()

		logrus.Info("sent test email")
	},
}