Rename config vars. Add widget holder template and endpoint to serve it. Add dockerfile

internal/api/module.go

@@ -15,6 +15,7 @@ import (
 	"payouts/internal/api/payout"
 	"payouts/internal/api/user"
 	"payouts/internal/api/version"
+	"payouts/internal/api/widget"
 	appConfig "payouts/internal/config"
 	"payouts/internal/service/monitoring"
 )
@@ -25,6 +26,7 @@ var Module = fx.Options(
 	health.Module,
 	payout.Module,
 	version.Module,
+	widget.Module,
 	monitoring.Module,
 
 	fx.Invoke(RegisterRoutes),
@@ -41,8 +43,9 @@ type Params struct {
 
 	PayoutHandler payout.Handler
 	UserHandler   user.Handler
-	Version       version.Handler
 	HealthHandler health.Handler
+	Version       version.Handler
+	Widget        widget.Handler
 
 	Metrics monitoring.Metrics
 }
@@ -77,6 +80,9 @@ func RegisterRoutes(p Params, lc fx.Lifecycle) {
 	payoutRouter.HandleFunc(payout.CreateRoute, p.PayoutHandler.PayoutCreate).Methods(http.MethodPost)
 	payoutRouter.HandleFunc(payout.CallbackRoute, p.PayoutHandler.PayoutCallback).Methods(http.MethodPost)
 
+	// Widget endpoint
+	router.HandleFunc(widget.WidgetPage, p.Widget.WidgetHandler).Methods(http.MethodGet)
+
 	// collect api metrics
 	apiRouter.Use(p.Metrics.GetMiddleware())