From 90ff6e223b44aac2c58250208c67bcbdecd6cddc Mon Sep 17 00:00:00 2001
From: Patrick Britton <admin@pbritton.dev>
Date: Fri, 6 Feb 2026 14:45:51 -0600
Subject: [PATCH] Wire SendPulse newsletter signup into waitlist endpoint, add
 subscriber to address book 568090

---
 go-backend/cmd/api/main.go | 61 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/go-backend/cmd/api/main.go b/go-backend/cmd/api/main.go
index 3c27be4..319e714 100644
--- a/go-backend/cmd/api/main.go
+++ b/go-backend/cmd/api/main.go
@@ -1,7 +1,11 @@
 package main
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
+	"fmt"
+	"io"
 	"net/http"
 	"os"
 	"os/signal"
@@ -189,12 +193,17 @@ func main() {
 					c.JSON(400, gin.H{"error": "Valid email required"})
 					return
 				}
+				// Store locally
 				_, err := dbPool.Exec(c.Request.Context(),
 					`INSERT INTO public.waitlist (email) VALUES ($1) ON CONFLICT (email) DO NOTHING`, req.Email)
 				if err != nil {
 					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)
 				c.JSON(200, gin.H{"message": "You're on the list!"})
 			})
 		}
@@ -457,3 +466,55 @@ 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")
+}