cart

pkg/backofficeadmin/app.go

@@ -58,9 +58,10 @@ type Config struct {
 // App is the commerce admin control plane. Construct with New, register its
 // HTTP surface with RegisterRoutes, run background work with Start.
 type App struct {
-	fs  *FileServer
-	hub *Hub
-	cs  *CustomerServer
+	fs               *FileServer
+	hub              *Hub
+	cs               *CustomerServer
+	OnVouchersChange func(codes []string)
 }
 
 // New constructs the commerce admin: it opens the cart/checkout disk event-log
@@ -171,6 +172,7 @@ func New(cfg Config) (*App, error) {
 // apply auth or CORS — the composing host (or standalone main) wraps the mux
 // with those.
 func (a *App) RegisterRoutes(mux *http.ServeMux) {
+	a.fs.OnVouchersChange = a.OnVouchersChange
 	mux.HandleFunc("GET /carts", a.fs.CartsHandler)
 	mux.HandleFunc("GET /cart/{id}", a.fs.CartHandler)
 	mux.HandleFunc("GET /checkouts", a.fs.CheckoutsHandler)

pkg/backofficeadmin/fileserver.go

@@ -24,11 +24,12 @@ import (
 
 type FileServer struct {
 	// Define fields here
-	dataDir         string
-	checkoutDataDir string
-	promotionsFile  string
-	storage         actor.LogStorage[cart.CartGrain]
-	checkoutStorage actor.LogStorage[checkout.CheckoutGrain]
+	dataDir          string
+	checkoutDataDir  string
+	promotionsFile   string
+	storage          actor.LogStorage[cart.CartGrain]
+	checkoutStorage  actor.LogStorage[checkout.CheckoutGrain]
+	OnVouchersChange func(codes []string)
 }
 
 func NewFileServer(dataDir string, checkoutDataDir string, promotionsFile string, storage actor.LogStorage[cart.CartGrain], checkoutStorage actor.LogStorage[checkout.CheckoutGrain]) *FileServer {
@@ -276,15 +277,37 @@ func (fs *FileServer) VoucherHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if r.Method == http.MethodPost {
-		_ = os.MkdirAll(filepath.Dir(fileName), 0755)
-		file, err := os.Create(fileName)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
 			return
 		}
-		defer file.Close()
 
-		io.Copy(file, r.Body)
+		var parsed struct {
+			State struct {
+				Vouchers []struct {
+					Code string `json:"code"`
+				} `json:"vouchers"`
+			} `json:"state"`
+		}
+		var codes []string
+		if err := json.Unmarshal(body, &parsed); err == nil {
+			for _, v := range parsed.State.Vouchers {
+				if v.Code != "" {
+					codes = append(codes, v.Code)
+				}
+			}
+		}
+
+		_ = os.MkdirAll(filepath.Dir(fileName), 0755)
+		if err := os.WriteFile(fileName, body, 0644); err != nil {
+			writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
+			return
+		}
+
+		if fs.OnVouchersChange != nil {
+			fs.OnVouchersChange(codes)
+		}
 		return
 	}