package main

import (
	"fmt"
	"net/http"
	"strings"

	"imuslab.com/zoraxy/mod/sshprox"
)

/*
	router.go

	This script holds the static resources router
	for the reverse proxy service
*/

func AuthFsHandler(handler http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// Allow access to /script/*, /img/pubic/* and /login.html without authentication
		if strings.HasPrefix(r.URL.Path, "/script/") || strings.HasPrefix(r.URL.Path, "/img/public/") || r.URL.Path == "/login.html" || r.URL.Path == "/favicon.png" {
			handler.ServeHTTP(w, r)
			return
		}

		// check authentication
		if !authAgent.CheckAuth(r) {
			http.Redirect(w, r, "/login.html", http.StatusTemporaryRedirect)
			return
		}

		//For WebSSH Routing
		//Example URL Path: /web.ssh/{{instance_uuid}}/*
		if strings.HasPrefix(r.URL.Path, "/web.ssh/") {
			requestPath := r.URL.Path
			if !strings.HasSuffix(requestPath, "/") {
				requestPath = requestPath + "/"
			}
			parts := strings.Split(requestPath, "/")
			if len(parts) > 2 {
				//Extract the instance ID from the request path
				instanceUUID := parts[2]
				fmt.Println(instanceUUID)

				//Rewrite the url so the proxy knows how to serve stuffs
				r.URL, _ = sshprox.RewriteURL("/web.ssh/"+instanceUUID, r.RequestURI)
				webSshManager.HandleHttpByInstanceId(instanceUUID, w, r)
			} else {
				fmt.Println(parts)
				http.Error(w, "Invalid Usage", http.StatusInternalServerError)
			}
			return
		}

		//Authenticated
		handler.ServeHTTP(w, r)
	})
}