Integrate email notifications into signup and login (#38)

backend/product/app/http/middleware.go

@@ -7,9 +7,12 @@ import (
 
 	mr "git.sendico.io/tech/sxchnge/product/app/metrics"
 	"git.sendico.io/tech/sxchnge/product/auth/config"
+	"git.sendico.io/tech/sxchnge/product/auth/flow"
 	httprouter "git.sendico.io/tech/sxchnge/product/auth/http"
 	"git.sendico.io/tech/sxchnge/product/auth/response"
 	authstorage "git.sendico.io/tech/sxchnge/product/auth/storage"
+	accountservice "git.sendico.io/tech/sxchnge/product/customers"
+	"git.sendico.io/tech/sxchnge/product/notifications"
 	"git.sendico.io/tech/sxchnge/product/sessions/browser"
 	"git.sendico.io/tech/sxchnge/shared/database"
 	"git.sendico.io/tech/sxchnge/shared/errors"
@@ -26,11 +29,12 @@ import (
 )
 
 type Middleware struct {
-	logger       mlogger.Logger
-	router       *chi.Mux
-	apiEndpoint  string
-	metrics      mr.Metrics
-	epdispatcher *httprouter.Dispatcher
+	notifications *notifications.Client
+	logger        mlogger.Logger
+	router        *chi.Mux
+	apiEndpoint   string
+	metrics       mr.Metrics
+	epdispatcher  *httprouter.Dispatcher
 }
 
 func (mw *Middleware) Handler(service mservice.Type, endpoint string, method api.HTTPMethod, handler sresponse.HandlerFunc) {
@@ -47,6 +51,9 @@ func (mw *Middleware) PendingAccountHandler(service mservice.Type, endpoint stri
 
 func (mw *Middleware) Finish() {
 	mw.metrics.Finish()
+	if mw.notifications != nil {
+		_ = mw.notifications.Close()
+	}
 }
 
 func (mw *Middleware) installMiddleware(config *middleware.Config, debug bool) {
@@ -107,6 +114,7 @@ func CreateMiddleware(
 	config *middleware.Config,
 	authStorage *middleware.AuthStorageConfig,
 	debug bool,
+	notificationConfig ...*notifications.Config,
 ) (*Middleware, error) {
 	if config == nil {
 		return nil, merrors.InvalidArgument("middleware configuration is required", "middleware")
@@ -139,6 +147,23 @@ func CreateMiddleware(
 		return nil, err
 	}
 
+	var authFlow *flow.Service
+	if len(notificationConfig) > 0 && notificationConfig[0] != nil {
+		c := notificationConfig[0]
+		customers, err := accountservice.NewAccountService(p.logger, db, &config.Password, authStorage)
+		if err != nil {
+			return nil, err
+		}
+		authFlow = &flow.Service{Accounts: stores.Accounts, Customers: customers, Tokens: stores.Verification, Transactions: db.TransactionFactory(), Attempts: stores.LoginAttempts, Secret: middleware.SignatureConf(config).PrivateKey, ActivationURL: c.ActivationURL}
+		if err = authFlow.Validate(); err != nil {
+			return nil, err
+		}
+		p.notifications, err = notifications.Open(*c)
+		if err != nil {
+			return nil, err
+		}
+		authFlow.Sender = p.notifications
+	}
 	p.epdispatcher = httprouter.NewDispatcher(
 		p.logger,
 		p.router,
@@ -148,6 +173,7 @@ func CreateMiddleware(
 		stores.LoginAttempts,
 		config,
 		loginRateLimits,
+		authFlow,
 	)
 	return p, nil
 }