Refactor controller and handlers

controller/handler/spa.go

@@ -0,0 +1,27 @@
+package handler
+
+import (
+	"html/template"
+	"log"
+	"net/http"
+
+	"github.com/TwinProduction/gatus/config"
+)
+
+func SinglePageApplication(staticFolder string, ui *config.UIConfig) http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		t, err := template.ParseFiles(staticFolder + "/index.html")
+		if err != nil {
+			log.Println("[handler][SinglePageApplication] Failed to parse template:", err.Error())
+			http.ServeFile(writer, request, staticFolder+"/index.html")
+			return
+		}
+		writer.Header().Set("Content-Type", "text/html")
+		err = t.Execute(writer, ui)
+		if err != nil {
+			log.Println("[handler][SinglePageApplication] Failed to parse template:", err.Error())
+			http.ServeFile(writer, request, staticFolder+"/index.html")
+			return
+		}
+	}
+}