Refactor SendPulse into shared service, wire app registration to Sojorn Members list (book 568122)

go-backend/cmd/api/main.go

@@ -1,11 +1,7 @@
 package main
 
 import (
-	"bytes"
 	"context"
-	"encoding/json"
-	"fmt"
-	"io"
 	"net/http"
 	"os"
 	"os/signal"
@@ -116,6 +112,7 @@ func main() {
 	notificationService := services.NewNotificationService(notifRepo, pushService, userRepo)
 
 	emailService := services.NewEmailService(cfg)
+	sendPulseService := services.NewSendPulseService(cfg.SendPulseID, cfg.SendPulseSecret)
 
 	// Load moderation configuration
 	moderationConfig := config.NewModerationConfig()
@@ -133,7 +130,7 @@ func main() {
 	userHandler := handlers.NewUserHandler(userRepo, postRepo, notificationService, assetService)
 	postHandler := handlers.NewPostHandler(postRepo, userRepo, feedService, assetService, notificationService, moderationService, contentFilter)
 	chatHandler := handlers.NewChatHandler(chatRepo, notificationService, hub)
-	authHandler := handlers.NewAuthHandler(userRepo, cfg, emailService)
+	authHandler := handlers.NewAuthHandler(userRepo, cfg, emailService, sendPulseService)
 	categoryHandler := handlers.NewCategoryHandler(categoryRepo)
 	keyHandler := handlers.NewKeyHandler(userRepo)
 	backupHandler := handlers.NewBackupHandler(repository.NewBackupRepository(dbPool))
@@ -200,10 +197,8 @@ func main() {
 					c.JSON(500, gin.H{"error": "Failed to join waitlist"})
 					return
 				}
-				// Add to SendPulse in background
-				go func(email string) {
-					addToSendPulse(cfg, email)
-				}(req.Email)
+				// Add to SendPulse waitlist in background
+				go sendPulseService.AddToWaitlist(req.Email)
 				c.JSON(200, gin.H{"message": "You're on the list!"})
 			})
 		}
@@ -466,55 +461,3 @@ func main() {
 
 	log.Info().Msg("Server exiting")
 }
-
-func addToSendPulse(cfg *config.Config, email string) {
-	if cfg.SendPulseID == "" || cfg.SendPulseSecret == "" {
-		return
-	}
-
-	// 1. Get OAuth token
-	tokenBody, _ := json.Marshal(map[string]string{
-		"grant_type":    "client_credentials",
-		"client_id":     cfg.SendPulseID,
-		"client_secret": cfg.SendPulseSecret,
-	})
-	tokenResp, err := http.Post("https://api.sendpulse.com/oauth/access_token", "application/json", bytes.NewReader(tokenBody))
-	if err != nil {
-		log.Error().Err(err).Msg("SendPulse: failed to get token")
-		return
-	}
-	defer tokenResp.Body.Close()
-
-	var tokenData struct {
-		AccessToken string `json:"access_token"`
-	}
-	if err := json.NewDecoder(tokenResp.Body).Decode(&tokenData); err != nil || tokenData.AccessToken == "" {
-		log.Error().Err(err).Msg("SendPulse: failed to parse token")
-		return
-	}
-
-	// 2. Add subscriber to Sojorn Waitlist (address book 568090)
-	subBody, _ := json.Marshal(map[string]interface{}{
-		"emails": []map[string]string{
-			{"email": email},
-		},
-	})
-	req, _ := http.NewRequest("POST", "https://api.sendpulse.com/addressbooks/568090/emails", bytes.NewReader(subBody))
-	req.Header.Set("Authorization", "Bearer "+tokenData.AccessToken)
-	req.Header.Set("Content-Type", "application/json")
-
-	resp, err := http.DefaultClient.Do(req)
-	if err != nil {
-		log.Error().Err(err).Msg("SendPulse: failed to add subscriber")
-		return
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode >= 300 {
-		body, _ := io.ReadAll(resp.Body)
-		log.Error().Str("status", fmt.Sprintf("%d", resp.StatusCode)).Str("body", string(body)).Msg("SendPulse: add subscriber failed")
-		return
-	}
-
-	log.Info().Str("email", email).Msg("SendPulse: subscriber added to waitlist")
-}

go-backend/internal/handlers/auth_handler.go

@@ -23,13 +23,14 @@ import (
 )
 
 type AuthHandler struct {
-	repo         *repository.UserRepository
-	config       *config.Config
-	emailService *services.EmailService
+	repo             *repository.UserRepository
+	config           *config.Config
+	emailService     *services.EmailService
+	sendPulseService *services.SendPulseService
 }
 
-func NewAuthHandler(repo *repository.UserRepository, cfg *config.Config, emailService *services.EmailService) *AuthHandler {
-	return &AuthHandler{repo: repo, config: cfg, emailService: emailService}
+func NewAuthHandler(repo *repository.UserRepository, cfg *config.Config, emailService *services.EmailService, sendPulseService *services.SendPulseService) *AuthHandler {
+	return &AuthHandler{repo: repo, config: cfg, emailService: emailService, sendPulseService: sendPulseService}
 }
 
 type RegisterRequest struct {
@@ -154,6 +155,12 @@ func (h *AuthHandler) Register(c *gin.Context) {
 			log.Printf("[Auth] Failed to send email to %s: %v", req.Email, err)
 		}
 	}()
+
+	// Add to SendPulse Members list if user opted into newsletter
+	if req.EmailNewsletter && h.sendPulseService != nil {
+		go h.sendPulseService.AddToMembers(req.Email)
+	}
+
 	c.JSON(http.StatusCreated, gin.H{
 		"message": "Registration successful. Please verify your email to activate your account.",
 		"state":   "verification_pending",

go-backend/internal/services/sendpulse_service.go

@@ -0,0 +1,96 @@
+package services
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/rs/zerolog/log"
+)
+
+const (
+	SendPulseWaitlistBookID = 568090
+	SendPulseMembersBookID  = 568122
+)
+
+type SendPulseService struct {
+	ClientID     string
+	ClientSecret string
+}
+
+func NewSendPulseService(clientID, clientSecret string) *SendPulseService {
+	return &SendPulseService{ClientID: clientID, ClientSecret: clientSecret}
+}
+
+func (s *SendPulseService) getToken() (string, error) {
+	tokenBody, _ := json.Marshal(map[string]string{
+		"grant_type":    "client_credentials",
+		"client_id":     s.ClientID,
+		"client_secret": s.ClientSecret,
+	})
+	resp, err := http.Post("https://api.sendpulse.com/oauth/access_token", "application/json", bytes.NewReader(tokenBody))
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	var data struct {
+		AccessToken string `json:"access_token"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
+		return "", err
+	}
+	if data.AccessToken == "" {
+		return "", fmt.Errorf("empty access token")
+	}
+	return data.AccessToken, nil
+}
+
+func (s *SendPulseService) AddSubscriber(bookID int, email string) {
+	if s.ClientID == "" || s.ClientSecret == "" {
+		return
+	}
+
+	token, err := s.getToken()
+	if err != nil {
+		log.Error().Err(err).Msg("SendPulse: failed to get token")
+		return
+	}
+
+	subBody, _ := json.Marshal(map[string]interface{}{
+		"emails": []map[string]string{
+			{"email": email},
+		},
+	})
+	url := fmt.Sprintf("https://api.sendpulse.com/addressbooks/%d/emails", bookID)
+	req, _ := http.NewRequest("POST", url, bytes.NewReader(subBody))
+	req.Header.Set("Authorization", "Bearer "+token)
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		log.Error().Err(err).Int("book_id", bookID).Msg("SendPulse: failed to add subscriber")
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 300 {
+		body, _ := io.ReadAll(resp.Body)
+		log.Error().Int("status", resp.StatusCode).Str("body", string(body)).Int("book_id", bookID).Msg("SendPulse: add subscriber failed")
+		return
+	}
+
+	log.Info().Str("email", email).Int("book_id", bookID).Msg("SendPulse: subscriber added")
+}
+
+// AddToWaitlist adds an email to the Sojorn Waitlist
+func (s *SendPulseService) AddToWaitlist(email string) {
+	s.AddSubscriber(SendPulseWaitlistBookID, email)
+}
+
+// AddToMembers adds an email to the Sojorn Members list
+func (s *SendPulseService) AddToMembers(email string) {
+	s.AddSubscriber(SendPulseMembersBookID, email)
+}