Implement the renderer routing basics

frontend/main.go

@@ -9,6 +9,7 @@ import (
 	"github.com/valyala/fasthttp"
 
 	"code.tokarch.uk/mainnika/nikita-tokarch-uk/frontend/config"
+	"code.tokarch.uk/mainnika/nikita-tokarch-uk/frontend/renderer"
 
 	_ "code.tokarch.uk/mainnika/nikita-tokarch-uk/frontend/templates"
 )
@@ -50,8 +51,13 @@ func main() {
 		logrus.Fatal(err)
 	}
 
+	rendererHandler := &renderer.Renderer{
+		Base:          config.Base,
+	}
+
 	httpServer := fasthttp.Server{
 		Logger:  logrus.StandardLogger(),
+		Handler: rendererHandler.Handler,
 		Name:    frontendServerIdentity,
 		GetOnly: true,
 	}

frontend/renderer/renderer.go

@@ -0,0 +1,35 @@
+package renderer
+
+import (
+	"sync"
+
+	routing "github.com/jackwhelpton/fasthttp-routing/v2"
+	"github.com/valyala/fasthttp"
+)
+
+// Renderer is the main handler that contains all routes handlers
+type Renderer struct {
+	Base string
+
+	router  *routing.Router
+	handler fasthttp.RequestHandler
+
+	initOnce sync.Once
+}
+
+// Handler invokes the lazy once-initializer and then does the request
+func (r *Renderer) Handler(ctx *fasthttp.RequestCtx) {
+	r.initOnce.Do(r.init)
+	r.handler(ctx)
+}
+
+// init has the renderer initialization
+func (r *Renderer) init() {
+
+	router := routing.New()
+
+	router.Use(r.useTemplateWriter)
+
+	r.router = router
+	r.handler = router.HandleRequest
+}