implement basic web server for dashboard,

use templates to do basic SSR on head and header

.gitignore

@@ -1,3 +1,4 @@
-vars.js
+**/config.json
 **/package-lock.json
 **/node_modules
+dist/*

Makefile

@@ -0,0 +1,15 @@
+.PHONY: build test clean
+
+build: clean
+	@echo "======================== Building Binary ======================="
+# resolve symbolic links in web by copying it into dist/web/
+	cp -rL web/ dist/web/
+	CGO_ENABLED=0 go build -ldflags="-s -w" -o dist/ .
+
+test: clean
+	go run .
+
+clean:
+	@echo "======================== Cleaning Project ======================"
+	go clean
+	rm -rf dist/*

app/app.go

@@ -0,0 +1,124 @@
+package app
+
+import (
+	"flag"
+	"fmt"
+	"io/fs"
+	"log"
+	"net/http"
+	embed "proxmoxaas-dashboard/dist/web" // go will complain here until the first build
+	"text/template"
+)
+
+var html map[string]*template.Template
+
+func ParseTemplates() {
+	html = make(map[string]*template.Template)
+	fs.WalkDir(embed.HTML, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if !d.IsDir() { // if it is a html file, parse with all the template files
+			v, err := fs.ReadFile(embed.HTML, path)
+			if err != nil {
+				log.Fatalf("error reading html file %s: %s", path, err.Error())
+			}
+			t := template.New(d.Name())
+			t, err = t.Parse(string(v))
+			if err != nil {
+				log.Fatalf("error parsing html file %s: %s", path, err.Error())
+			}
+			fs.WalkDir(embed.Templates, ".", func(path string, e fs.DirEntry, err error) error {
+				if err != nil {
+					return err
+				}
+				if !e.IsDir() { // if it is a template file, parse it
+					v, err = fs.ReadFile(embed.Templates, path)
+					if err != nil {
+						log.Fatalf("error reading template file %s: %s", path, err.Error())
+					}
+					t, err = t.Parse(string(v))
+					if err != nil {
+						log.Fatalf("error parsing template file %s: %s", path, err.Error())
+					}
+				}
+				return nil
+			})
+			html[d.Name()] = t
+		}
+		return nil
+	})
+
+}
+
+func ServeStatic() {
+	http.Handle("/css/", http.FileServerFS(embed.CSS_fs))
+	http.Handle("/images/", http.FileServerFS(embed.Images_fs))
+	http.Handle("/modules/", http.FileServerFS(embed.Modules_fs))
+	http.Handle("/scripts/", http.FileServerFS(embed.Scripts_fs))
+}
+
+func Run() {
+	configPath := flag.String("config", "config.json", "path to config.json file")
+	flag.Parse()
+
+	global := GetConfig(*configPath)
+
+	ParseTemplates()
+
+	http.HandleFunc("/account.html", func(w http.ResponseWriter, r *http.Request) {
+		global.Page = "account"
+		err := html["account.html"].Execute(w, global)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	})
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		global.Page = "index"
+		err := html["index.html"].Execute(w, global)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	})
+
+	http.HandleFunc("/index.html", func(w http.ResponseWriter, r *http.Request) {
+		global.Page = "index"
+		err := html["index.html"].Execute(w, global)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	})
+
+	http.HandleFunc("/instance.html", func(w http.ResponseWriter, r *http.Request) {
+		global.Page = "instance"
+		err := html["instance.html"].Execute(w, global)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	})
+
+	http.HandleFunc("/login.html", func(w http.ResponseWriter, r *http.Request) {
+		global.Page = "login"
+		err := html["login.html"].Execute(w, global)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	})
+
+	http.HandleFunc("/settings.html", func(w http.ResponseWriter, r *http.Request) {
+		global.Page = "settings"
+		err := html["settings.html"].Execute(w, global)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	})
+
+	ServeStatic()
+
+	log.Printf("Starting HTTP server at port: %d\n", global.Port)
+	err := http.ListenAndServe(fmt.Sprintf("0.0.0.0:%d", global.Port), nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+}

app/utils.go

@@ -0,0 +1,28 @@
+package app
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+)
+
+type Config struct {
+	Port         int    `json:"listenPort"`
+	Organization string `json:"organization"`
+	PVE          string `json:"pveurl"`
+	API          string `json:"apiurl"`
+	Page         string
+}
+
+func GetConfig(configPath string) Config {
+	content, err := os.ReadFile(configPath)
+	if err != nil {
+		log.Fatal("Error when opening config file: ", err)
+	}
+	var config Config
+	err = json.Unmarshal(content, &config)
+	if err != nil {
+		log.Fatal("Error during parsing config file: ", err)
+	}
+	return config
+}

configs/.htmlvalidate.json

@@ -0,0 +1,8 @@
+{
+	"extends": [
+		"html-validate:recommended"
+	],
+	"rules": {
+		"no-inline-style": "off"
+	}
+}

configs/template.config.json

@@ -0,0 +1,6 @@
+{
+	"listenPort": 8080,
+	"organization": "myorg",
+	"apiurl": "https://paas.mydomain.example/api",
+	"pveurl": "https://pve.mydomain.example"
+}

go.mod

@@ -0,0 +1,3 @@
+module proxmoxaas-dashboard
+
+go 1.23.2

init/proxmoxaas-dashboard.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=proxmoxaas-dashboard
+After=network.target
+[Service]
+WorkingDirectory=/<path to dir>
+ExecStart=/<path to dir>/promoxaas-dashboard
+Restart=always
+RestartSec=10
+Type=simple
+[Install]
+WantedBy=default.target

package.json

@@ -4,8 +4,8 @@
 	"description": "Front-end for ProxmoxAAS",
 	"type": "module",
 	"scripts": {
-		"lint": "html-validator --continue; stylelint --formatter verbose --fix css/*.css; DEBUG=eslint:cli-engine eslint --fix scripts/",
+		"lint": "html-validate --config configs/.htmlvalidate.json web/html/*; stylelint --config configs/.stylelintrc.json --formatter verbose --fix web/css/*.css; DEBUG=eslint:cli-engine eslint --config configs/.eslintrc.json --fix web/scripts/",
-		"update-modules": "rm -rf modules/wfa.js modules/wfa.wasm; curl https://git.tronnet.net/alu/WFA-JS/releases/download/latest/wfa.js -o modules/wfa.js; curl https://git.tronnet.net/alu/WFA-JS/releases/download/latest/wfa.wasm -o modules/wfa.wasm"
+		"update-modules": "rm -rf web/modules/wfa.js web/modules/wfa.wasm; curl https://git.tronnet.net/alu/WFA-JS/releases/download/latest/wfa.js -o web/modules/wfa.js; curl https://git.tronnet.net/alu/WFA-JS/releases/download/latest/wfa.wasm -o web/modules/wfa.wasm"
 	},
 	"devDependencies": {
 		"eslint": "^8.43.0",
@@ -15,6 +15,6 @@
 		"eslint-plugin-promise": "^6.1.1",
 		"stylelint": "^15.9.0",
 		"stylelint-config-standard": "^33.0.0",
-		"w3c-html-validator": "^1.4.0"
+		"html-validate": "^9.4.0"
 	}
 }

proxmoxaas-dashboard.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	app "proxmoxaas-dashboard/app"
+)
+
+func main() {
+	app.Run()
+}

web/embed.go

@@ -0,0 +1,43 @@
+package embed
+
+import (
+	"embed"
+)
+
+//go:embed css/*
+var CSS_fs embed.FS
+
+//go:embed images/*
+var Images_fs embed.FS
+
+//go:embed modules/*
+var Modules_fs embed.FS
+
+//go:embed scripts/*
+var Scripts_fs embed.FS
+
+//go:embed html/*
+var HTML embed.FS
+
+//go:embed templates/*
+var Templates embed.FS
+
+/*
+//go:embed html/account.html
+var Account string
+
+//go:embed html/index.html
+var Index string
+
+//go:embed html/instance.html
+var Instance string
+
+//go:embed html/login.html
+var Login string
+
+//go:embed html/settings.html
+var Settings string
+
+//go:embed templates/base.html
+var Base string
+*/

web/html/account.html

@@ -1,15 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
 	<head>
-		<meta charset="utf-8">
+		{{template "head" .}}
-		<meta name="viewport" content="width=device-width, initial-scale=1.0">
-		<title>{{.Organization}} - dashboard</title>
-		<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">
-		<link rel="stylesheet" href="modules/w3.css">
-		<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
-		<link rel="stylesheet" href="css/style.css">
-		<link rel="stylesheet" href="css/nav.css">
-		<link rel="stylesheet" href="css/form.css">
 		<script src="scripts/account.js" type="module"></script>
 		<script src="modules/chart.js"></script>
 		<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
@@ -43,15 +35,7 @@
 	</head>
 	<body>
 		<header>
-			<h1>{{.Organization}}</h1>
+			{{template "header" .}}
-			<label for="navtoggle">&#9776;</label>
-			<input type="checkbox" id="navtoggle">
-			<nav id="navigation">
-				<a href="index.html">Instances</a>
-				<a href="account.html" aria-current="page">Account</a>
-				<a href="settings.html">Settings</a>
-				<a href="login.html">Logout</a>
-			</nav>
 		</header>
 		<main>
 			<h2>Account</h2>
@@ -65,7 +49,7 @@
 			<section class="w3-card w3-padding">
 				<div class="flex row nowrap">
 					<h3>Password</h3>
-					<button class="w3-button w3-margin" id="change-password">Change Password</button>
+					<button class="w3-button w3-margin" id="change-password" type="button">Change Password</button>
 				</div>
 			</section>
 			<section class="w3-card w3-padding">

web/html/index.html

@@ -1,15 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
 	<head>
-		<meta charset="utf-8">
+		{{template "head" .}}
-		<meta name="viewport" content="width=device-width, initial-scale=1.0">
-		<title>{{.Organization}} - dashboard</title>
-		<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">
-		<link rel="stylesheet" href="modules/w3.css">
-		<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
-		<link rel="stylesheet" href="css/style.css">
-		<link rel="stylesheet" href="css/nav.css">
-		<link rel="stylesheet" href="css/form.css">
 		<script src="scripts/index.js" type="module"></script>
 		<script src="modules/wfa.js" type="module"></script>
 		<style>
@@ -33,15 +25,7 @@
 	</head>
 	<body>
 		<header>
-			<h1>{{.Organization}}</h1>
+			{{template "header" .}}
-			<label for="navtoggle">&#9776;</label>
-			<input type="checkbox" id="navtoggle">
-			<nav id="navigation">
-				<a href="index.html" aria-current="page">Instances</a>
-				<a href="account.html">Account</a>
-				<a href="settings.html">Settings</a>
-				<a href="login.html">Logout</a>
-			</nav>
 		</header>
 		<main>
 			<section>

web/html/instance.html

@@ -1,15 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
 	<head>
-		<meta charset="utf-8">
+		{{template "head" .}}
-		<meta name="viewport" content="width=device-width, initial-scale=1.0">
-		<title>{{.Organization}} - dashboard</title>
-		<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">
-		<link rel="stylesheet" href="modules/w3.css">
-		<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
-		<link rel="stylesheet" href="css/style.css">
-		<link rel="stylesheet" href="css/nav.css">
-		<link rel="stylesheet" href="css/form.css">
 		<script src="scripts/instance.js" type="module"></script>
 		<script src="scripts/draggable.js" type="module"></script>
 		<script src="modules/Sortable.min.js"></script>
@@ -25,15 +17,7 @@
 	</head>
 	<body>
 		<header>
-			<h1>{{.Organization}}</h1>
+			{{template "header" .}}
-			<label for="navtoggle">&#9776;</label>
-			<input type="checkbox" id="navtoggle">
-			<nav id="navigation">
-				<a href="index.html" aria-current="page">Instances</a>
-				<a href="account.html">Account</a>
-				<a href="settings.html">Settings</a>
-				<a href="login.html">Logout</a>
-			</nav>
 		</header>
 		<main>
 			<section>

web/html/login.html

@@ -1,25 +1,12 @@
 <!DOCTYPE html>
 <html lang="en">
 	<head>
-		<meta charset="utf-8">
+		{{template "head" .}}
-		<meta name="viewport" content="width=device-width, initial-scale=1.0">
-		<title>{{.Organization}} - dashboard</title>
-		<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">
-		<link rel="stylesheet" href="modules/w3.css">
-		<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
-		<link rel="stylesheet" href="css/style.css">
-		<link rel="stylesheet" href="css/nav.css">
-		<link rel="stylesheet" href="css/form.css">
 		<script src="scripts/login.js" type="module"></script>
 	</head>
 	<body>
 		<header>
-			<h1>{{.Organization}}</h1>
+			{{template "header" .}}
-			<label for="navtoggle">&#9776;</label>
-			<input type="checkbox" id="navtoggle">
-			<nav id="navigation">
-				<a href="login.html" aria-current="page">Login</a>
-			</nav>
 		</header>
 		<main class="flex" style="justify-content: center; align-items: center;">
 			<div class="w3-container w3-card w3-margin w3-padding" style="height: fit-content;">
@@ -32,7 +19,7 @@
 					<label for="realm">Realm</label>
 					<select class="w3-select w3-border" id="realm" name="realm"></select>
 					<div class="w3-center">
-						<button class="w3-button w3-margin" id="submit">LOGIN</button>
+						<button class="w3-button w3-margin" id="submit" type="submit">LOGIN</button>
 					</div>
 				</form>
 			</div>

web/html/settings.html

@@ -1,15 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
 	<head>
-		<meta charset="utf-8">
+		{{template "head" .}}
-		<meta name="viewport" content="width=device-width, initial-scale=1.0">
-		<title>{{.Organization}} - dashboard</title>
-		<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">
-		<link rel="stylesheet" href="modules/w3.css">
-		<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
-		<link rel="stylesheet" href="css/style.css">
-		<link rel="stylesheet" href="css/nav.css">
-		<link rel="stylesheet" href="css/form.css">
 		<script src="scripts/settings.js" type="module"></script>
 		<style>
 			legend {
@@ -34,19 +26,11 @@
 	</head>
 	<body>
 		<header>
-			<h1>{{.Organization}}</h1>
+			{{template "header" .}}
-			<label for="navtoggle">&#9776;</label>
-			<input type="checkbox" id="navtoggle">
-			<nav id="navigation">
-				<a href="index.html">Instances</a>
-				<a href="account.html">Account</a>
-				<a href="settings.html" aria-current="page">Settings</a>
-				<a href="login.html">Logout</a>
-			</nav>
 		</header>
 		<main>
 			<h2>Settings</h2>
-			<form id = "settings">
+			<form id="settings">
 				<section class="w3-card w3-padding">
 					<h3>Synchronization Settings</h3>
 					<fieldset>

web/scripts/clientsync.js

@@ -1,5 +1,4 @@
 import { getSyncSettings, requestAPI } from "./utils.js";
-import { API } from "../vars.js";
 
 export async function setupClientSync (callback) {
 	const { scheme, rate } = getSyncSettings();
@@ -22,7 +21,7 @@ export async function setupClientSync (callback) {
 	}
 	else if (scheme === "interrupt") {
 		callback();
-		const socket = new WebSocket(`wss://${API.replace("https://", "")}/sync/interrupt`);
+		const socket = new WebSocket(`wss://${window.API.replace("https://", "")}/sync/interrupt`);
 		socket.addEventListener("open", (event) => {
 			socket.send(`rate ${rate}`);
 		});

web/scripts/index.js

@@ -2,7 +2,6 @@ import { requestPVE, requestAPI, goToPage, setAppearance, getSearchSettings, goT
 import { alert, dialog } from "./dialog.js";
 import { setupClientSync } from "./clientsync.js";
 import wfaInit from "../modules/wfa.js";
-import { PVE } from "../vars.js";
 
 class InstanceCard extends HTMLElement {
 	constructor () {
@@ -220,7 +219,7 @@ class InstanceCard extends HTMLElement {
 		if (!this.actionLock && this.status === "running") {
 			const data = { console: `${this.type === "qemu" ? "kvm" : "lxc"}`, vmid: this.vmid, vmname: this.name, node: this.node.name, resize: "off", cmd: "" };
 			data[`${this.type === "qemu" ? "novnc" : "xtermjs"}`] = 1;
-			goToURL(PVE, data, true);
+			goToURL(window.PVE, data, true);
 		}
 	}
 

web/scripts/utils.js

@@ -1,5 +1,3 @@
-import { API } from "../vars.js";
-
 export const resourcesConfig = {
 	cpu: {
 		name: "CPU Type",
@@ -224,7 +222,7 @@ export async function requestPVE (path, method, body = null) {
 		content.headers.CSRFPreventionToken = getCookie("CSRFPreventionToken");
 	}
 
-	const response = await request(`${API}/proxmox${path}`, content);
+	const response = await request(`${window.API}/proxmox${path}`, content);
 	return response;
 }
 
@@ -245,7 +243,7 @@ export async function requestAPI (path, method, body = null) {
 		content.body = prms.toString();
 	}
 
-	const response = await request(`${API}${path}`, content);
+	const response = await request(`${window.API}${path}`, content);
 	return response;
 }
 

web/template.vars.js

@@ -1,3 +0,0 @@
-export const API = "https://paas.mydomain.example/api"; // the proxmox-aas api
-export const PVE = "https://pve.mydomain.example"; // the proxmox api
-export const organization = "mydomain"; // org name used in page title and nav bar

web/templates/base.html

@@ -0,0 +1,31 @@
+{{define "head"}}
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>{{.Organization}} - dashboard</title>
+<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">
+<link rel="stylesheet" href="modules/w3.css">
+<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
+<script>
+	window.PVE = "{{.PVE}}";
+	window.API = "{{.API}}";
+</script>
+<link rel="stylesheet" href="css/style.css">
+<link rel="stylesheet" href="css/nav.css">
+<link rel="stylesheet" href="css/form.css">
+{{end}}
+
+{{define "header"}}
+<h1>{{.Organization}}</h1>
+<label for="navtoggle">&#9776;</label>
+<input type="checkbox" id="navtoggle">
+<nav id="navigation">
+	{{if eq .Page "login"}}
+		<a href="login.html" aria-current="page">Login</a>
+	{{else}}
+		<a href="index.html" {{if eq .Page "index"}} aria-current="page" {{end}}>Instances</a>
+		<a href="account.html" {{if eq .Page "account"}} aria-current="page" {{end}}>Account</a>
+		<a href="settings.html" {{if eq .Page "settings"}} aria-current="page" {{end}}>Settings</a>
+		<a href="login.html">Logout</a>
+	{{end}}
+</nav>	
+{{end}}