embed http server

services/sender.go

@@ -1,7 +1,9 @@
 package services
 
 import (
+	"encoding/json"
 	"fmt"
+	"io"
 	cfg "mailsrv/config"
 	"mailsrv/mail"
 	"mailsrv/runtime"
@@ -12,6 +14,7 @@ import (
 	"syscall"
 	"time"
 
+	"net/http"
 	"net/smtp"
 
 	"github.com/rs/zerolog/log"
@@ -43,7 +46,6 @@ func (s Sender) SendMail(email mail.Email) error {
 	log.Debug().Msg("SMTP authentication succeed")
 
 	if err := smtp.SendMail(s.smtpConfig.GetFullUrl(), auth, email.Sender, email.GetReceivers(), email.Generate()); err != nil {
-		log.Err(err).Msg("error while sending email")
 		return err
 	}
 
@@ -51,6 +53,35 @@ func (s Sender) SendMail(email mail.Email) error {
 	return nil
 }
 
+func (s Sender) mailHandler(w http.ResponseWriter, r *http.Request) {
+	content, err := io.ReadAll(r.Body)
+	if err != nil {
+		log.Err(err).Msg("unable to read request body")
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	var mail mail.Email
+	if err := json.Unmarshal(content, &mail); err != nil {
+		log.Err(err).Msg("unable to deserialized request body into mail")
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	s.queue.Add(mail)
+	w.WriteHeader(http.StatusOK)
+}
+
+func (s Sender) runHTTPserver() {
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/mail", s.mailHandler)
+
+	if err := http.ListenAndServe(":1212", mux); err != nil {
+		log.Err(err).Msg("http server stops listening")
+	}
+}
+
 // watchOutbox reads the `outbox` directory every `TickInterval` and put JSON format e-mail in the queue.
 func (s Sender) watchOutbox() {
 	log.Info().Str("outbox", s.outboxPath).Msg("start watching outbox directory")
@@ -149,6 +180,8 @@ func (s Sender) Run() {
 	s.watchOutbox()
 	chQueue := s.run()
 
+	go s.runHTTPserver()
+
 	select {
 	case <-chSignal:
 		log.Warn().Msg("stop signal received, stopping e-mail queue...")