feat(email): endpoint for sending auth code

backend/auth.go

@@ -50,7 +50,7 @@ func (a *Auth) IsCodeValid(email string, code string) bool {
 	return existingCode.Valid.After(time.Now()) && existingCode.Code == code
 }
 
-func NewAuth(mailer Mailer) Auth {
+func CreateAuth(mailer Mailer) Auth {
 	return Auth{
 		codes:  make(map[string]Code),
 		mailer: mailer,

backend/email.go

@@ -23,6 +23,22 @@ func (m MailClient) getMessage() (*mail.Msg, error) {
 	return message, nil
 }
 
+func (m MailClient) SendCode(to string, code string) error {
+	msg, err := m.getMessage()
+	if err != nil {
+		return err
+	}
+
+	if err := msg.To(to); err != nil {
+		return err
+	}
+
+	msg.Subject("Login to Haystack")
+	msg.SetBodyString(mail.TypeTextPlain, code)
+
+	return m.client.DialAndSend(msg)
+}
+
 func CreateMailClient() (MailClient, error) {
 	client, err := mail.NewClient(
 		"smtp.mailbox.org",

backend/main.go

@@ -41,6 +41,13 @@ func main() {
 	imageModel := models.NewImageModel(db)
 	userModel := models.NewUserModel(db)
 
+	mail, err := CreateMailClient()
+	if err != nil {
+		panic(err)
+	}
+
+	auth := CreateAuth(mail)
+
 	go ListenNewImageEvents(db)
 
 	r := chi.NewRouter()
@@ -218,8 +225,28 @@ func main() {
 		w.Header().Add("Content-Type", "application/json")
 	})
 
-	log.Println("Listening and serving on port 3040.")
+	r.Post("/login", func(w http.ResponseWriter, r *http.Request) {
+		type LoginBody struct {
+			Email string `json:"email"`
+		}
 
+		loginBody := LoginBody{}
+		err := json.NewDecoder(r.Body).Decode(&loginBody)
+		if err != nil {
+			log.Println(err)
+			w.WriteHeader(http.StatusBadRequest)
+			fmt.Fprintf(w, "Request body was not correct")
+			return
+		}
+
+		// TODO: validate it's an email
+
+		auth.CreateCode(loginBody.Email)
+
+		w.WriteHeader(http.StatusOK)
+	})
+
+	log.Println("Listening and serving on port 3040.")
 	if err := http.ListenAndServe(":3040", r); err != nil {
 		log.Println(err)
 		return