feat(api): 🎉 Add business profile and catalog management

* Implement endpoints for managing business profiles:
  - Get business profile
  - Update business profile

* Add catalog management features:
  - List catalogs
  - List products in a catalog
  - Send catalog messages
  - Send single product messages
  - Send product list messages

* Introduce media upload functionality for sending media files.

* Add flow management capabilities:
  - Deprecate flows

* Update API documentation to reflect new endpoints and features.

pkg/handlers/business_profile.go

@@ -0,0 +1,84 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"git.warky.dev/wdevs/whatshooked/pkg/whatsapp/businessapi"
+)
+
+// GetBusinessProfile retrieves the business profile for a Business API account.
+// POST /api/business-profile  {"account_id"}
+func (h *Handlers) GetBusinessProfile(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID string `json:"account_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	profile, err := baClient.GetBusinessProfile(r.Context())
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, profile)
+}
+
+// UpdateBusinessProfile updates the business profile for a Business API account.
+// POST /api/business-profile/update  {"account_id","about","address","description","email","websites":[],"vertical"}
+func (h *Handlers) UpdateBusinessProfile(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID   string   `json:"account_id"`
+		About       string   `json:"about,omitempty"`
+		Address     string   `json:"address,omitempty"`
+		Description string   `json:"description,omitempty"`
+		Email       string   `json:"email,omitempty"`
+		Websites    []string `json:"websites,omitempty"`
+		Vertical    string   `json:"vertical,omitempty"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	profile := businessapi.BusinessProfileUpdate{
+		About:       req.About,
+		Address:     req.Address,
+		Description: req.Description,
+		Email:       req.Email,
+		Websites:    req.Websites,
+		Vertical:    req.Vertical,
+	}
+
+	if err := baClient.UpdateBusinessProfile(r.Context(), profile); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, map[string]string{"status": "ok"})
+}

pkg/handlers/catalog.go

@@ -0,0 +1,215 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"git.warky.dev/wdevs/whatshooked/pkg/utils"
+	"git.warky.dev/wdevs/whatshooked/pkg/whatsapp/businessapi"
+	"go.mau.fi/whatsmeow/types"
+)
+
+// ListCatalogs returns product catalogs for a Business API account.
+// POST /api/catalogs  {"account_id"}
+func (h *Handlers) ListCatalogs(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID string `json:"account_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	resp, err := baClient.ListCatalogs(r.Context())
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, resp)
+}
+
+// ListProducts returns products in a specific catalog.
+// POST /api/catalogs/products  {"account_id","catalog_id"}
+func (h *Handlers) ListProducts(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID string `json:"account_id"`
+		CatalogID string `json:"catalog_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if req.CatalogID == "" {
+		http.Error(w, "catalog_id is required", http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	resp, err := baClient.ListProducts(r.Context(), req.CatalogID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, resp)
+}
+
+// SendCatalogMessage sends a catalog message that shares the full product catalog.
+// POST /api/send/catalog  {"account_id","to","body_text","thumbnail_product_retailer_id"}
+func (h *Handlers) SendCatalogMessage(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID                  string `json:"account_id"`
+		To                         string `json:"to"`
+		BodyText                   string `json:"body_text"`
+		ThumbnailProductRetailerID string `json:"thumbnail_product_retailer_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if req.BodyText == "" {
+		http.Error(w, "body_text is required", http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	jid, err := types.ParseJID(utils.FormatPhoneToJID(req.To, h.config.Server.DefaultCountryCode))
+	if err != nil {
+		http.Error(w, "Invalid phone number", http.StatusBadRequest)
+		return
+	}
+
+	if _, err := baClient.SendCatalogMessage(r.Context(), jid, req.BodyText, req.ThumbnailProductRetailerID); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
+// SendSingleProduct sends a single-product interactive message.
+// POST /api/send/product  {"account_id","to","catalog_id","product_retailer_id","body_text","footer_text"}
+func (h *Handlers) SendSingleProduct(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID         string `json:"account_id"`
+		To                string `json:"to"`
+		CatalogID         string `json:"catalog_id"`
+		ProductRetailerID string `json:"product_retailer_id"`
+		BodyText          string `json:"body_text"`
+		FooterText        string `json:"footer_text"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if req.CatalogID == "" || req.ProductRetailerID == "" || req.BodyText == "" {
+		http.Error(w, "catalog_id, product_retailer_id, and body_text are required", http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	jid, err := types.ParseJID(utils.FormatPhoneToJID(req.To, h.config.Server.DefaultCountryCode))
+	if err != nil {
+		http.Error(w, "Invalid phone number", http.StatusBadRequest)
+		return
+	}
+
+	if _, err := baClient.SendSingleProduct(r.Context(), jid, req.CatalogID, req.ProductRetailerID, req.BodyText, req.FooterText); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
+// SendProductList sends a multi-product list message (up to 30 products across up to 10 sections).
+// POST /api/send/product-list  {"account_id","to","header_text","body_text","footer_text","catalog_id","sections":[...]}
+func (h *Handlers) SendProductList(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID  string                            `json:"account_id"`
+		To         string                            `json:"to"`
+		HeaderText string                            `json:"header_text"`
+		BodyText   string                            `json:"body_text"`
+		FooterText string                            `json:"footer_text"`
+		CatalogID  string                            `json:"catalog_id"`
+		Sections   []businessapi.ProductListSection  `json:"sections"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if req.CatalogID == "" || req.HeaderText == "" || req.BodyText == "" || len(req.Sections) == 0 {
+		http.Error(w, "catalog_id, header_text, body_text, and sections are required", http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	jid, err := types.ParseJID(utils.FormatPhoneToJID(req.To, h.config.Server.DefaultCountryCode))
+	if err != nil {
+		http.Error(w, "Invalid phone number", http.StatusBadRequest)
+		return
+	}
+
+	if _, err := baClient.SendProductList(r.Context(), jid, req.HeaderText, req.BodyText, req.FooterText, req.CatalogID, req.Sections); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, map[string]string{"status": "ok"})
+}

pkg/handlers/flows.go

@@ -193,6 +193,43 @@ func (h *Handlers) PublishFlow(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, map[string]string{"status": "ok"})
 }
 
+// DeprecateFlow transitions a PUBLISHED flow to DEPRECATED.
+// Deprecated flows block new sessions but remain usable by sessions already in progress.
+// POST /api/flows/deprecate  {"account_id","flow_id"}
+func (h *Handlers) DeprecateFlow(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID string `json:"account_id"`
+		FlowID    string `json:"flow_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if req.FlowID == "" {
+		http.Error(w, "flow_id is required", http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if err := baClient.DeprecateFlow(r.Context(), req.FlowID); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
 // DeleteFlow permanently removes a flow.
 // POST /api/flows/delete  {"account_id","flow_id"}
 func (h *Handlers) DeleteFlow(w http.ResponseWriter, r *http.Request) {

pkg/handlers/media_upload.go

@@ -0,0 +1,52 @@
+package handlers
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"net/http"
+)
+
+// UploadMedia uploads a media file to Meta's servers and returns the media ID.
+// Useful for pre-uploading media before referencing the ID in a subsequent send call.
+// POST /api/media/upload  {"account_id","data"(base64),"mime_type"}
+func (h *Handlers) UploadMedia(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		AccountID string `json:"account_id"`
+		Data      string `json:"data"`
+		MimeType  string `json:"mime_type"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if req.Data == "" || req.MimeType == "" {
+		http.Error(w, "data and mime_type are required", http.StatusBadRequest)
+		return
+	}
+
+	baClient, err := h.getBusinessAPIClient(req.AccountID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	mediaData, err := base64.StdEncoding.DecodeString(req.Data)
+	if err != nil {
+		http.Error(w, "Invalid base64 data", http.StatusBadRequest)
+		return
+	}
+
+	mediaID, err := baClient.UploadMedia(r.Context(), mediaData, req.MimeType)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	writeJSON(w, map[string]string{"media_id": mediaID})
+}

pkg/handlers/static/README.md

@@ -1,82 +0,0 @@
-# Static Files
-
-This directory contains the embedded static files for the WhatsHooked landing page.
-
-## Files
-
-- `index.html` - Landing page with API documentation
-- `logo.png` - WhatsHooked logo (from `assets/image/whatshooked_tp.png`)
-
-## How It Works
-
-These files are embedded into the Go binary using `go:embed` directive in `static.go`.
-
-When you build the server:
-```bash
-go build ./cmd/server/
-```
-
-The files in this directory are compiled directly into the binary, so the server can run without any external files.
-
-## Updating the Landing Page
-
-1. **Edit the HTML:**
-   ```bash
-   vim pkg/handlers/static/index.html
-   ```
-
-2. **Rebuild the server:**
-   ```bash
-   go build ./cmd/server/
-   ```
-
-3. **Restart the server:**
-   ```bash
-   ./server -config bin/config.json
-   ```
-
-The changes will be embedded in the new binary.
-
-## Updating the Logo
-
-1. **Replace the logo:**
-   ```bash
-   cp path/to/new-logo.png pkg/handlers/static/logo.png
-   ```
-
-2. **Rebuild:**
-   ```bash
-   go build ./cmd/server/
-   ```
-
-## Routes
-
-- `GET /` - Serves `index.html`
-- `GET /static/logo.png` - Serves `logo.png`
-- `GET /static/*` - Serves any file in this directory
-
-## Development Tips
-
-- Files are cached with `Cache-Control: public, max-age=3600` (1 hour)
-- Force refresh in browser: `Ctrl+Shift+R` or `Cmd+Shift+R`
-- Changes require rebuild - no hot reload
-- Keep files small - they're embedded in the binary
-
-## File Structure
-
-```
-pkg/handlers/
-├── static.go         # Handler with go:embed directive
-├── static/
-│   ├── index.html    # Landing page
-│   ├── logo.png      # Logo image
-│   └── README.md     # This file
-```
-
-## Benefits of Embedded Files
-
-✅ **Single binary deployment** - No external dependencies
-✅ **Fast serving** - Files loaded from memory
-✅ **No file system access** - Works in restricted environments
-✅ **Portable** - Binary includes everything
-✅ **Version controlled** - Static assets tracked with code

pkg/handlers/static/index.html

@@ -384,6 +384,154 @@
                     <span class="endpoint-method post">POST</span>
                     <span class="endpoint-path">/api/send/document</span>
                 </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/audio</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/sticker</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/location</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/contacts</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/interactive</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/template</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/flow</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/reaction</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/messages/read</span>
+                </div>
+            </div>
+
+            <div class="endpoint-group">
+                <h3>📄 Templates</h3>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/templates</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/templates/upload</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/templates/delete</span>
+                </div>
+            </div>
+
+            <div class="endpoint-group">
+                <h3>🔄 Flows</h3>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows/create</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows/get</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows/upload</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows/publish</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows/deprecate</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/flows/delete</span>
+                </div>
+            </div>
+
+            <div class="endpoint-group">
+                <h3>📞 Phone Numbers</h3>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/phone-numbers</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/phone-numbers/request-code</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/phone-numbers/verify-code</span>
+                </div>
+            </div>
+
+            <div class="endpoint-group">
+                <h3>🏪 Catalog / Commerce</h3>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/catalogs</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/catalogs/products</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/catalog</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/product</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/send/product-list</span>
+                </div>
+            </div>
+
+            <div class="endpoint-group">
+                <h3>🏢 Business Profile</h3>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/business-profile</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/business-profile/update</span>
+                </div>
+            </div>
+
+            <div class="endpoint-group">
+                <h3>🗑️ Media Management</h3>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/media/upload</span>
+                </div>
+                <div class="endpoint">
+                    <span class="endpoint-method post">POST</span>
+                    <span class="endpoint-path">/api/media-delete</span>
+                </div>
             </div>
 
             <div class="endpoint-group">

pkg/whatsapp/businessapi/catalog.go

@@ -0,0 +1,172 @@
+package businessapi
+
+import (
+	"context"
+	"net/url"
+
+	"git.warky.dev/wdevs/whatshooked/pkg/events"
+	"git.warky.dev/wdevs/whatshooked/pkg/logging"
+
+	"go.mau.fi/whatsmeow/types"
+)
+
+// ListCatalogs returns all product catalogs linked to the business account.
+func (c *Client) ListCatalogs(ctx context.Context) (*CatalogListResponse, error) {
+	if c.config.BusinessAccountID == "" {
+		return nil, errNoBusinessAccount
+	}
+
+	params := url.Values{
+		"fields": {"id,name,product_count"},
+	}
+
+	var resp CatalogListResponse
+	if err := c.graphAPIGet(ctx, c.config.BusinessAccountID+"/catalogs", params, &resp); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// ListProducts returns products in a specific catalog.
+func (c *Client) ListProducts(ctx context.Context, catalogID string) (*ProductListResponse, error) {
+	params := url.Values{
+		"fields": {"product_retailer_id,name,description,image_url,base_price,currency,availability,category"},
+	}
+
+	var resp ProductListResponse
+	if err := c.graphAPIGet(ctx, catalogID+"/products", params, &resp); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// SendCatalogMessage sends a catalog message that shares the full product catalog.
+// thumbnailProductRetailerID is optional — when non-empty it sets which product image
+// appears as the catalog preview thumbnail.
+func (c *Client) SendCatalogMessage(ctx context.Context, jid types.JID, bodyText string, thumbnailProductRetailerID string) (string, error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	phoneNumber := jidToPhoneNumber(jid)
+
+	action := map[string]any{
+		"name": "catalog_message",
+	}
+	if thumbnailProductRetailerID != "" {
+		action["parameters"] = map[string]any{
+			"thumbnail_product_retailer_id": thumbnailProductRetailerID,
+		}
+	}
+
+	msg := map[string]any{
+		"messaging_product": "whatsapp",
+		"to":                phoneNumber,
+		"type":              "interactive",
+		"interactive": map[string]any{
+			"type":   "catalog_message",
+			"body":   map[string]any{"text": bodyText},
+			"action": action,
+		},
+	}
+
+	messageID, err := c.postToMessagesEndpoint(ctx, msg)
+	if err != nil {
+		c.eventBus.Publish(events.MessageFailedEvent(ctx, c.id, phoneNumber, bodyText, err))
+		return "", err
+	}
+
+	logging.Debug("Catalog message sent via Business API", "account_id", c.id, "to", phoneNumber)
+	c.eventBus.Publish(events.MessageSentEvent(ctx, c.id, messageID, phoneNumber, bodyText))
+	return messageID, nil
+}
+
+// SendSingleProduct sends a single-product interactive message.
+func (c *Client) SendSingleProduct(ctx context.Context, jid types.JID, catalogID, productRetailerID, bodyText, footerText string) (string, error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	phoneNumber := jidToPhoneNumber(jid)
+
+	interactive := map[string]any{
+		"type": "product",
+		"header": map[string]any{
+			"type":                "product",
+			"product_retailer_id": productRetailerID,
+		},
+		"body": map[string]any{"text": bodyText},
+		"action": map[string]any{
+			"catalog_id":          catalogID,
+			"product_retailer_id": productRetailerID,
+		},
+	}
+	if footerText != "" {
+		interactive["footer"] = map[string]any{"text": footerText}
+	}
+
+	msg := map[string]any{
+		"messaging_product": "whatsapp",
+		"to":                phoneNumber,
+		"type":              "interactive",
+		"interactive":       interactive,
+	}
+
+	messageID, err := c.postToMessagesEndpoint(ctx, msg)
+	if err != nil {
+		c.eventBus.Publish(events.MessageFailedEvent(ctx, c.id, phoneNumber, bodyText, err))
+		return "", err
+	}
+
+	logging.Debug("Single product sent via Business API", "account_id", c.id, "to", phoneNumber, "product", productRetailerID)
+	c.eventBus.Publish(events.MessageSentEvent(ctx, c.id, messageID, phoneNumber, bodyText))
+	return messageID, nil
+}
+
+// SendProductList sends a multi-product list message. Up to 30 products across up to 10 sections.
+func (c *Client) SendProductList(ctx context.Context, jid types.JID, headerText, bodyText, footerText, catalogID string, sections []ProductListSection) (string, error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	phoneNumber := jidToPhoneNumber(jid)
+
+	actionSections := make([]map[string]any, len(sections))
+	for i, s := range sections {
+		items := make([]map[string]any, len(s.ProductItems))
+		for j, item := range s.ProductItems {
+			items[j] = map[string]any{"product_retailer_id": item.ProductRetailerID}
+		}
+		actionSections[i] = map[string]any{
+			"title":         s.Title,
+			"product_items": items,
+		}
+	}
+
+	interactive := map[string]any{
+		"type":   "product_list",
+		"header": map[string]any{"type": "text", "text": headerText},
+		"body":   map[string]any{"text": bodyText},
+		"action": map[string]any{
+			"catalog_id": catalogID,
+			"sections":   actionSections,
+		},
+	}
+	if footerText != "" {
+		interactive["footer"] = map[string]any{"text": footerText}
+	}
+
+	msg := map[string]any{
+		"messaging_product": "whatsapp",
+		"to":                phoneNumber,
+		"type":              "interactive",
+		"interactive":       interactive,
+	}
+
+	messageID, err := c.postToMessagesEndpoint(ctx, msg)
+	if err != nil {
+		c.eventBus.Publish(events.MessageFailedEvent(ctx, c.id, phoneNumber, bodyText, err))
+		return "", err
+	}
+
+	logging.Debug("Product list sent via Business API", "account_id", c.id, "to", phoneNumber, "sections", len(sections))
+	c.eventBus.Publish(events.MessageSentEvent(ctx, c.id, messageID, phoneNumber, bodyText))
+	return messageID, nil
+}

pkg/whatsapp/businessapi/flows.go

@@ -65,6 +65,13 @@ func (c *Client) PublishFlow(ctx context.Context, flowID string) error {
 	return c.graphAPIPost(ctx, flowID+"?action=PUBLISH", nil, &resp)
 }
 
+// DeprecateFlow transitions a PUBLISHED flow to DEPRECATED.
+// Deprecated flows block new sessions but remain usable by sessions already in progress.
+func (c *Client) DeprecateFlow(ctx context.Context, flowID string) error {
+	var resp FlowActionResponse
+	return c.graphAPIPost(ctx, flowID+"?action=DEPRECATE", nil, &resp)
+}
+
 // DeleteFlow permanently removes a flow.
 func (c *Client) DeleteFlow(ctx context.Context, flowID string) error {
 	return c.graphAPIDelete(ctx, flowID, nil)

pkg/whatsapp/businessapi/media.go

@@ -10,6 +10,12 @@ import (
 	"net/http"
 )
 
+// UploadMedia uploads a media file to Meta and returns the media ID.
+// Useful for pre-uploading media before referencing it in a later send call.
+func (c *Client) UploadMedia(ctx context.Context, data []byte, mimeType string) (string, error) {
+	return c.uploadMedia(ctx, data, mimeType)
+}
+
 // uploadMedia uploads media to the Business API and returns the media ID
 func (c *Client) uploadMedia(ctx context.Context, data []byte, mimeType string) (string, error) {
 	url := fmt.Sprintf("https://graph.facebook.com/%s/%s/media",

pkg/whatsapp/businessapi/profile.go

@@ -0,0 +1,28 @@
+package businessapi
+
+import (
+	"context"
+	"net/url"
+)
+
+// GetBusinessProfile retrieves the business profile for this phone number.
+func (c *Client) GetBusinessProfile(ctx context.Context) (*BusinessProfile, error) {
+	params := url.Values{
+		"fields": {"about,address,description,email,websites,vertical,profile_picture_url"},
+	}
+
+	var resp BusinessProfile
+	if err := c.graphAPIGet(ctx, c.config.PhoneNumberID+"/whatsapp_business_profile", params, &resp); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// UpdateBusinessProfile updates one or more business profile fields.
+// Only include fields you want to change — omitted fields are left untouched.
+func (c *Client) UpdateBusinessProfile(ctx context.Context, profile BusinessProfileUpdate) error {
+	profile.MessagingProduct = "whatsapp"
+
+	var resp map[string]any
+	return c.graphAPIPost(ctx, c.config.PhoneNumberID+"/whatsapp_business_profile", profile, &resp)
+}

pkg/whatsapp/businessapi/types.go

@@ -774,6 +774,79 @@ type VerifyCodeData struct {
 	MessageStatus string `json:"message_status"` // "CODE_VERIFIED"
 }
 
+// ---------------------------------------------------------------------------
+// Business profile
+// ---------------------------------------------------------------------------
+
+// BusinessProfile represents a WhatsApp Business profile returned by the API.
+type BusinessProfile struct {
+	About         string   `json:"about,omitempty"`
+	Address       string   `json:"address,omitempty"`
+	Description   string   `json:"description,omitempty"`
+	Email         string   `json:"email,omitempty"`
+	Websites      []string `json:"websites,omitempty"`
+	Vertical      string   `json:"vertical,omitempty"`
+	ProfilePicURL string   `json:"profile_picture_url,omitempty"`
+}
+
+// BusinessProfileUpdate is the payload sent to update business profile fields.
+// Only populated fields are sent; omit a field to leave it unchanged.
+type BusinessProfileUpdate struct {
+	MessagingProduct string   `json:"messaging_product"`          // always "whatsapp"
+	About            string   `json:"about,omitempty"`
+	Address          string   `json:"address,omitempty"`
+	Description      string   `json:"description,omitempty"`
+	Email            string   `json:"email,omitempty"`
+	Websites         []string `json:"websites,omitempty"`
+	Vertical         string   `json:"vertical,omitempty"`
+}
+
+// ---------------------------------------------------------------------------
+// Catalog / commerce
+// ---------------------------------------------------------------------------
+
+// CatalogListResponse is the response from listing catalogs on a WABA.
+type CatalogListResponse struct {
+	Data   []CatalogInfo `json:"data"`
+	Paging *PagingInfo   `json:"paging,omitempty"`
+}
+
+// CatalogInfo represents a single product catalog.
+type CatalogInfo struct {
+	ID           string `json:"id"`
+	Name         string `json:"name"`
+	ProductCount int    `json:"product_count,omitempty"`
+}
+
+// ProductListResponse is the response from listing products in a catalog.
+type ProductListResponse struct {
+	Data   []ProductInfo `json:"data"`
+	Paging *PagingInfo   `json:"paging,omitempty"`
+}
+
+// ProductInfo represents a product in a catalog.
+type ProductInfo struct {
+	ProductRetailerID string  `json:"product_retailer_id"`
+	Name              string  `json:"name,omitempty"`
+	Description       string  `json:"description,omitempty"`
+	ImageURL          string  `json:"image_url,omitempty"`
+	BasePrice         float64 `json:"base_price,omitempty"`
+	Currency          string  `json:"currency,omitempty"`
+	Availability      string  `json:"availability,omitempty"`
+	Category          string  `json:"category,omitempty"`
+}
+
+// ProductItem is a product reference used inside a product-list message section.
+type ProductItem struct {
+	ProductRetailerID string `json:"product_retailer_id"`
+}
+
+// ProductListSection is one section in a product-list interactive message.
+type ProductListSection struct {
+	Title        string        `json:"title"`
+	ProductItems []ProductItem `json:"product_items"`
+}
+
 // ---------------------------------------------------------------------------
 // Shared / pagination
 // ---------------------------------------------------------------------------

pkg/whatshooked/server.go

@@ -263,6 +263,7 @@ func (s *Server) setupRoutes() *http.ServeMux {
 	mux.HandleFunc("/api/flows/get", h.Auth(h.GetFlow))
 	mux.HandleFunc("/api/flows/upload", h.Auth(h.UploadFlowAsset))
 	mux.HandleFunc("/api/flows/publish", h.Auth(h.PublishFlow))
+	mux.HandleFunc("/api/flows/deprecate", h.Auth(h.DeprecateFlow))
 	mux.HandleFunc("/api/flows/delete", h.Auth(h.DeleteFlow))
 
 	// Phone number management (with auth)
@@ -271,8 +272,20 @@ func (s *Server) setupRoutes() *http.ServeMux {
 	mux.HandleFunc("/api/phone-numbers/verify-code", h.Auth(h.VerifyCode))
 
 	// Media management (with auth)
+	mux.HandleFunc("/api/media/upload", h.Auth(h.UploadMedia))
 	mux.HandleFunc("/api/media-delete", h.Auth(h.DeleteMediaFile))
 
+	// Business profile (with auth)
+	mux.HandleFunc("/api/business-profile", h.Auth(h.GetBusinessProfile))
+	mux.HandleFunc("/api/business-profile/update", h.Auth(h.UpdateBusinessProfile))
+
+	// Catalog / commerce (with auth)
+	mux.HandleFunc("/api/catalogs", h.Auth(h.ListCatalogs))
+	mux.HandleFunc("/api/catalogs/products", h.Auth(h.ListProducts))
+	mux.HandleFunc("/api/send/catalog", h.Auth(h.SendCatalogMessage))
+	mux.HandleFunc("/api/send/product", h.Auth(h.SendSingleProduct))
+	mux.HandleFunc("/api/send/product-list", h.Auth(h.SendProductList))
+
 	// Message cache management (with auth)
 	mux.HandleFunc("/api/cache", h.Auth(h.GetCachedEvents))                // GET - list cached events
 	mux.HandleFunc("/api/cache/stats", h.Auth(h.GetCacheStats))            // GET - cache statistics