feat: message notify

server/internal/msg/msgx/sender/email.go

@@ -0,0 +1,100 @@
+package sender
+
+import (
+	"crypto/tls"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"mayfly-go/internal/msg/msgx"
+	"mayfly-go/pkg/utils/collx"
+	"mayfly-go/pkg/utils/stringx"
+	"net/smtp"
+	"strings"
+
+	"github.com/may-fly/cast"
+)
+
+type EmailSender struct{}
+
+func (e EmailSender) Send(channel *msgx.Channel, msg *msgx.Msg) error {
+	return e.SendEmail(channel, msg)
+}
+
+func (e EmailSender) SendEmail(channel *msgx.Channel, msg *msgx.Msg) error {
+	subject := msg.Title
+	content, err := stringx.TemplateResolve(msg.Content, msg.Params)
+	if err != nil {
+		return err
+	}
+
+	to := collx.ArrayMapFilter(msg.Receivers, func(a msgx.Receiver) (string, bool) {
+		return a.Email, a.Email != ""
+	})
+
+	if len(to) == 0 {
+		return errors.New("no receiver")
+	}
+
+	systemName := "mayfly-go"
+
+	serverAndPort := strings.Split(channel.URL, ":")
+	smtpServer := serverAndPort[0]
+	smtpPort := 465
+	if len(serverAndPort) == 2 {
+		smtpPort = cast.ToInt(serverAndPort[1])
+	}
+
+	smtpAccount := channel.GetExtraString("smtpAccount")
+	smtpPassword := channel.GetExtraString("smtpPassword")
+
+	encodedSubject := fmt.Sprintf("=?UTF-8?B?%s?=", base64.StdEncoding.EncodeToString([]byte(subject)))
+	mail := []byte(fmt.Sprintf("To: %s\r\n"+
+		"From: %s<%s>\r\n"+
+		"Subject: %s\r\n"+
+		"Content-Type: text/html; charset=UTF-8\r\n\r\n%s\r\n",
+		strings.Join(to, ";"), systemName, smtpAccount, encodedSubject, content))
+	auth := smtp.PlainAuth("", smtpAccount, smtpPassword, smtpServer)
+	addr := fmt.Sprintf("%s:%d", smtpServer, smtpPort)
+
+	if smtpPort == 465 {
+		tlsConfig := &tls.Config{
+			InsecureSkipVerify: true,
+			ServerName:         smtpServer,
+		}
+		conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%d", smtpServer, smtpPort), tlsConfig)
+		if err != nil {
+			return err
+		}
+		client, err := smtp.NewClient(conn, smtpServer)
+		if err != nil {
+			return err
+		}
+		defer client.Close()
+		if err = client.Auth(auth); err != nil {
+			return err
+		}
+		if err = client.Mail(smtpAccount); err != nil {
+			return err
+		}
+		for _, receiver := range to {
+			if err = client.Rcpt(receiver); err != nil {
+				return err
+			}
+		}
+		w, err := client.Data()
+		if err != nil {
+			return err
+		}
+		_, err = w.Write(mail)
+		if err != nil {
+			return err
+		}
+		err = w.Close()
+		if err != nil {
+			return err
+		}
+	} else {
+		err = smtp.SendMail(addr, auth, smtpAccount, to, mail)
+	}
+	return err
+}