refactor

cmd/order/main.go

@@ -12,6 +12,7 @@ import (
 	"log"
 	"log/slog"
 	"net/http"
+	"net/mail"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -36,19 +37,20 @@ import (
 )
 
 type server struct {
-	pool        *actor.SimpleGrainPool[order.OrderGrain]
-	applier     *orderedApplier
-	storage     *actor.DiskStorage[order.OrderGrain]
-	reg         actor.MutationRegistry
-	engine      *flow.Engine
-	freg        *flow.Registry
-	flows       *flowStore
-	provider    order.PaymentProvider
-	taxProvider tax.Provider
-	defaultFlow string
-	dataDir     string
-	idem        *idempotency.Store
-	logger      *slog.Logger
+	pool                  *actor.SimpleGrainPool[order.OrderGrain]
+	applier               *orderedApplier
+	storage               *actor.DiskStorage[order.OrderGrain]
+	reg                   actor.MutationRegistry
+	engine                *flow.Engine
+	freg                  *flow.Registry
+	flows                 *flowStore
+	provider              order.PaymentProvider
+	taxProvider           tax.Provider
+	defaultFlow           string
+	dataDir               string
+	idem                  *idempotency.Store
+	logger                *slog.Logger
+	inventoryReservations order.InventoryReservationService
 }
 
 func main() {
@@ -101,6 +103,18 @@ func main() {
 	// the broker (publisher is nil without AMQP — the hook then errors at run
 	// time, which is logged, not fatal).
 	amqpURL := os.Getenv("AMQP_URL")
+	emailTemplates, err := order.LoadEmailTemplates(config.EnvString("ORDER_EMAIL_TEMPLATES", "data/order-email-templates"))
+	if err != nil {
+		log.Fatalf("load email templates: %v", err)
+	}
+	emailSender, err := selectEmailSender(logger)
+	if err != nil {
+		log.Fatalf("configure email sender: %v", err)
+	}
+	inventoryReservations, err := selectInventoryReservationService()
+	if err != nil {
+		log.Fatalf("configure inventory reservation service: %v", err)
+	}
 	var emitPub order.Publisher
 	if amqpURL != "" {
 		// The amqp_emit hook writes to a durable outbox rather than the broker
@@ -138,13 +152,7 @@ func main() {
 			}
 		}
 	}
-	freg := flow.NewRegistry()
-	flow.RegisterBuiltinHooks(freg)
-	order.RegisterFlowActions(freg, applier, provider)
-	order.RegisterEmitHook(freg, emitPub)
-	// order.created domain event → durable outbox → "order" topic exchange.
-	// Reactors: inventory commit, fulfillment allocation.
-	order.RegisterOrderCreatedEmit(freg, applier, emitPub, "order", "order")
+	freg := buildFlowRegistry(applier, provider, inventoryReservations, emitPub, emailSender, emailTemplates, logger)
 	engine := flow.NewEngine(freg, logger)
 
 	def, err := order.EmbeddedFlow("place-and-pay")
@@ -171,6 +179,7 @@ func main() {
 		engine: engine, freg: freg, flows: flows, provider: provider,
 		taxProvider: taxProvider,
 		defaultFlow: def.Name, dataDir: dataDir, idem: idem, logger: logger,
+		inventoryReservations: inventoryReservations,
 	}
 
 	mux := http.NewServeMux()
@@ -276,8 +285,9 @@ type lineReq struct {
 	Sku       string `json:"sku"`
 	Name      string `json:"name"`
 	Quantity  int32  `json:"quantity"`
-	UnitPrice int64  `json:"unitPrice"`          // inc-vat, minor units
-	TaxRate   int32  `json:"taxRate"`           // basis points (2500 = 25%)
+	UnitPrice int64  `json:"unitPrice"` // inc-vat, minor units
+	TaxRate   int32  `json:"taxRate"`   // basis points (2500 = 25%)
+	DropShip  bool   `json:"drop_ship,omitempty"`
 	Location  string `json:"location,omitempty"` // inventory commit location / store id
 }
 
@@ -384,6 +394,7 @@ func (s *server) buildPlaceOrder(id order.OrderId, req *checkoutReq) *messages.P
 			TaxRate:     l.TaxRate,
 			TotalAmount: lineTotal,
 			TotalTax:    lineTax,
+			DropShip:    l.DropShip,
 		})
 	}
 	po.TotalAmount = total
@@ -502,7 +513,6 @@ func selectTaxProvider() tax.Provider {
 // the dependency-free mock; set PAYMENT_PROVIDER=stripe + STRIPE_SECRET_KEY for
 // real Stripe (STRIPE_API_BASE / STRIPE_PAYMENT_METHOD optionally override).
 func selectProvider(logger *slog.Logger) order.PaymentProvider {
-
 	if os.Getenv("PAYMENT_PROVIDER") == "stripe" {
 		key := os.Getenv("STRIPE_SECRET_KEY")
 		if key == "" {
@@ -515,6 +525,48 @@ func selectProvider(logger *slog.Logger) order.PaymentProvider {
 	return order.NewMockProvider()
 }
 
+// selectEmailSender picks the flow-email transport. SMTP is the only sender
+// implementation for now; when no SMTP host is configured the hook still exists
+// in capabilities but errors at run time if a flow tries to use it.
+func selectEmailSender(logger *slog.Logger) (order.EmailSender, error) {
+	kind := config.EnvString("ORDER_EMAIL_SENDER", "")
+	if kind == "" && os.Getenv("ORDER_EMAIL_SMTP_HOST") == "" {
+		return nil, nil
+	}
+	if kind == "" {
+		kind = "smtp"
+	}
+	if kind != "smtp" {
+		return nil, fmt.Errorf("unsupported ORDER_EMAIL_SENDER %q", kind)
+	}
+
+	fromAddr := strings.TrimSpace(os.Getenv("ORDER_EMAIL_FROM_ADDRESS"))
+	if fromAddr == "" {
+		return nil, fmt.Errorf("ORDER_EMAIL_FROM_ADDRESS is required when email sender is configured")
+	}
+	from := mail.Address{
+		Name:    strings.TrimSpace(os.Getenv("ORDER_EMAIL_FROM_NAME")),
+		Address: fromAddr,
+	}
+	sender, err := order.NewSMTPEmailSender(order.SMTPEmailSenderConfig{
+		Host:        config.EnvString("ORDER_EMAIL_SMTP_HOST", ""),
+		Port:        config.EnvInt("ORDER_EMAIL_SMTP_PORT", 587, func(n int) bool { return n > 0 }),
+		Username:    os.Getenv("ORDER_EMAIL_SMTP_USERNAME"),
+		Password:    os.Getenv("ORDER_EMAIL_SMTP_PASSWORD"),
+		DefaultFrom: from,
+		Timeout:     config.EnvDuration("ORDER_EMAIL_SMTP_TIMEOUT", 10*time.Second),
+	})
+	if err != nil {
+		return nil, err
+	}
+	logger.Info("email sender enabled", "kind", kind, "host", config.EnvString("ORDER_EMAIL_SMTP_HOST", ""), "from", from.Address)
+	return sender, nil
+}
+
+func selectInventoryReservationService() (order.InventoryReservationService, error) {
+	return order.NewHTTPInventoryReservationService(config.EnvString("INVENTORY_URL", "http://localhost:8080"), nil)
+}
+
 // loadUCPOrderSigner loads the UCP ECDSA signing key from the path specified in
 // the UCP_SIGNING_KEY_PATH environment variable. Returns nil if unset or unreadable.
 func loadUCPOrderSigner() *ucp.SigningConfig {