rewrite using net/http

app/app.go

@@ -4,12 +4,11 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"net/http"
 	"proxmoxaas-dashboard/app/common"
 	"proxmoxaas-dashboard/app/routes"
-	"strings"
 	"web" // go will complain here until the first build
 
-	"github.com/gin-gonic/gin"
 	"github.com/tdewolff/minify/v2"
 )
 
@@ -19,44 +18,42 @@ func Run() {
 
 	common.Global = common.GetConfig(*configPath)
 
-	// setup gin
-	gin.SetMode(gin.ReleaseMode)
-	router := gin.Default()
+	// setup http router
+	router := http.NewServeMux()
 
 	// setup static resources
 	m := common.InitMinify()
 	ServeStatic(router, m)
 	html := common.MinifyStatic(m, web.Templates)
-	common.TMPL = common.LoadHTMLToGin(router, html)
+	common.TMPL = common.LoadHTML(html)
 
 	// dynamic routes for pages and page fragments
-	router.GET("/", routes.HandleGETIndex)
-	router.GET("/index", routes.HandleGETIndex)
-	router.GET("/index/instances", routes.HandleGETInstancesFragment)
-	router.GET("/account", routes.HandleGETAccount)
-	router.GET("/config", routes.HandleGETConfig)
-	router.GET("/config/volumes", routes.HandleGETConfigVolumesFragment)
-	router.GET("/config/nets", routes.HandleGETConfigNetsFragment)
-	router.GET("/config/devices", routes.HandleGETConfigDevicesFragment)
-	router.GET("/config/boot", routes.HandleGETConfigBootFragment)
-	router.GET("/backups", routes.HandleGETBackups)
-	router.GET("/backups/backups", routes.HandleGETBackupsFragment)
-	router.GET("/login", routes.HandleGETLogin)
-	router.GET("/settings", routes.HandleGETSettings)
+	router.HandleFunc("GET /", routes.HandleGETIndex)
+	router.HandleFunc("GET /index", routes.HandleGETIndex)
+	router.HandleFunc("GET /index/instances", routes.HandleGETInstancesFragment)
+	router.HandleFunc("GET /account", routes.HandleGETAccount)
+	router.HandleFunc("GET /config", routes.HandleGETConfig)
+	router.HandleFunc("GET /config/volumes", routes.HandleGETConfigVolumesFragment)
+	router.HandleFunc("GET /config/nets", routes.HandleGETConfigNetsFragment)
+	router.HandleFunc("GET /config/devices", routes.HandleGETConfigDevicesFragment)
+	router.HandleFunc("GET /config/boot", routes.HandleGETConfigBootFragment)
+	router.HandleFunc("GET /backups", routes.HandleGETBackups)
+	router.HandleFunc("GET /backups/backups", routes.HandleGETBackupsFragment)
+	router.HandleFunc("GET /login", routes.HandleGETLogin)
+	router.HandleFunc("GET /settings", routes.HandleGETSettings)
 
 	// run on all interfaces with port
-	log.Fatal("[ERR ] starting gin router: ", router.Run(fmt.Sprintf("0.0.0.0:%d", common.Global.Port)))
+	log.Fatal("[ERR ] starting gin router: ", http.ListenAndServe(fmt.Sprintf("0.0.0.0:%d", common.Global.Port), router))
 }
 
 // setup static resources under web (css, images, modules, scripts)
-func ServeStatic(router *gin.Engine, m *minify.M) {
+func ServeStatic(router *http.ServeMux, m *minify.M) {
 	static := common.MinifyStatic(m, web.Static)
-	router.GET("/websrc/*path", func(c *gin.Context) {
-		path, _ := c.Params.Get("path")
-		trimed_path := strings.Replace(path, "/", "", 1) // replace leading "/" captured by *path
-		data := static[trimed_path]
-		fmt.Println(path)
-		c.Header("Content-Encoding", data.MimeType.Encoding)
-		c.Data(200, data.MimeType.Type, []byte(data.Data))
+	router.HandleFunc("GET /websrc/{path...}", func(w http.ResponseWriter, r *http.Request) {
+		path := r.PathValue("path")
+		data := static[path]
+		w.Header().Set("Content-Encoding", data.MimeType.Encoding)
+		w.Header().Set("Content-Type", data.MimeType.Type)
+		w.Write([]byte(data.Data))
 	})
 }

app/common/utils.go

@@ -16,7 +16,6 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/gin-gonic/gin"
 	"github.com/tdewolff/minify/v2"
 
 	paas "proxmoxaas-common-lib"
@@ -103,9 +102,8 @@ func MinifyStatic(m *minify.M, files embed.FS) map[string]StaticFile {
 	}
 }
 
-func LoadHTMLToGin(engine *gin.Engine, html map[string]StaticFile) *template.Template {
-	root := template.New("")
-	engine.FuncMap = template.FuncMap{
+func LoadHTML(html map[string]StaticFile) *template.Template {
+	funcMap := template.FuncMap{
 		"MapKeys": func(x any, sep string) string {
 			v := reflect.ValueOf(x)
 			keys := v.MapKeys()
@@ -133,9 +131,11 @@ func LoadHTMLToGin(engine *gin.Engine, html map[string]StaticFile) *template.Tem
 			return dict, nil
 		},
 	}
-	tmpl := template.Must(root, LoadAndAddToRoot(engine.FuncMap, root, html))
-	engine.SetHTMLTemplate(root)
-	return tmpl
+	root := template.New("").Funcs(funcMap)
+	if err := LoadAndAddToRoot(funcMap, root, html); err != nil {
+		log.Fatal(err)
+	}
+	return root
 }
 
 func LoadAndAddToRoot(FuncMap template.FuncMap, root *template.Template, html map[string]StaticFile) error {
@@ -170,9 +170,9 @@ func TemplateMinifier(m *minify.M, w io.Writer, r io.Reader, _ map[string]string
 	return nil
 }
 
-func HandleNonFatalError(c *gin.Context, err error) {
+func HandleNonFatalError(w http.ResponseWriter, err error) {
 	log.Printf("[WARN] encountered a non-fatal error: %s", err.Error())
-	c.Status(http.StatusInternalServerError)
+	w.WriteHeader(http.StatusInternalServerError)
 }
 
 func RequestGetAPI(path string, auth *paas.Auth, body any) (*http.Response, int, error) {
@@ -221,25 +221,41 @@ func RequestGetAPI(path string, auth *paas.Auth, body any) (*http.Response, int,
 	return response, response.StatusCode, nil
 }
 
-func GetAuthFromRequest(c *gin.Context) (paas.Auth, error) {
-	_, errAuth := c.Cookie("auth")
-	username, errUsername := c.Cookie("username")
-	token, errToken := c.Cookie("PVEAuthCookie")
-	csrf, errCSRF := c.Cookie("CSRFPreventionToken")
-	access, errAccess := c.Cookie("PAASAccessManagerTicket")
-	if errUsername != nil || errAuth != nil || errToken != nil || errCSRF != nil || errAccess != nil {
-		return paas.Auth{}, fmt.Errorf("error occured getting user cookies: (auth: %s, token: %s, csrf: %s)", errAuth, errToken, errCSRF)
-	} else {
-		return paas.Auth{Username: username, Token: token, CSRF: csrf, AccessManagerTicket: access}, nil
-	}
+func GetAuthFromRequest(r *http.Request) (paas.Auth, error) {
+	_, errAuth := r.Cookie("auth")
+	username, errUsername := r.Cookie("username")
+	token, errToken := r.Cookie("PVEAuthCookie")
+	csrf, errCSRF := r.Cookie("CSRFPreventionToken")
+	access, errAccess := r.Cookie("PAASAccessManagerTicket")
+
+	if errUsername != nil || errAuth != nil || errToken != nil ||
+		errCSRF != nil || errAccess != nil {
+		return paas.Auth{}, fmt.Errorf(
+			"error occurred getting user cookies: (auth: %v, token: %v, csrf: %v)",
+			errAuth, errToken, errCSRF,
+		)
 	}
 
-func GetInstancePathFromRequest(c *gin.Context) (paas.InstancePath, error) {
-	req_node := c.Query("node")
-	req_type := c.Query("type")
-	req_vmid := c.Query("vmid")
+	return paas.Auth{
+		Username:            username.Value,
+		Token:               token.Value,
+		CSRF:                csrf.Value,
+		AccessManagerTicket: access.Value,
+	}, nil
+}
+
+func GetInstancePathFromRequest(r *http.Request) (paas.InstancePath, error) {
+	query := r.URL.Query()
+
+	req_node := query.Get("node")
+	req_type := query.Get("type")
+	req_vmid := query.Get("vmid")
+
 	if req_node == "" || req_type == "" || req_vmid == "" {
-		return paas.InstancePath{}, fmt.Errorf("request missing required values: (node: %s, type: %s, vmid: %s)", req_node, req_type, req_vmid)
+		return paas.InstancePath{}, fmt.Errorf(
+			"request missing required values: (node: %s, type: %s, vmid: %s)",
+			req_node, req_type, req_vmid,
+		)
 	}
 
 	vmid_int, err := strconv.ParseUint(req_vmid, 10, 64)
@@ -252,6 +268,7 @@ func GetInstancePathFromRequest(c *gin.Context) (paas.InstancePath, error) {
 		InstanceType: paas.InstanceType(req_type),
 		InstanceID:   paas.InstanceID(vmid_int),
 	}
+
 	return vm_path, nil
 }
 

app/routes/account.go

@@ -1,13 +1,13 @@
 package routes
 
 import (
+	"bytes"
 	"fmt"
 	"net/http"
 	paas "proxmoxaas-common-lib"
 	"proxmoxaas-dashboard/app/common"
 
 	"github.com/gerow/go-color"
-	"github.com/gin-gonic/gin"
 	"github.com/go-viper/mapstructure/v2"
 )
 
@@ -40,29 +40,39 @@ var Green = color.RGB{
 	B: 0,
 }
 
-func HandleGETAccount(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETAccount(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
 		user, err := GetUserBasic(auth)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		pools, err := GetUserPools(auth)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
-		c.HTML(http.StatusOK, "html/account.html", gin.H{
+		w.Header().Set("Content-Type", "text/html")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/account.html", map[string]any{
 			"global": common.Global,
 			"page":   "account",
 			"user":   user,
 			"pools":  pools,
 		})
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-		c.Redirect(http.StatusFound, "/login") // if user is not authed, redirect user to login page
+			w.Write(body.Bytes())
+			return
+		}
+	} else {
+		http.Redirect(w, r, "/login", http.StatusFound) // if user is not authed, redirect user to login page
+		return
 	}
 }
 

app/routes/backups.go

@@ -1,13 +1,13 @@
 package routes
 
 import (
+	"bytes"
 	"fmt"
 	"net/http"
 	paas "proxmoxaas-common-lib"
 	"proxmoxaas-dashboard/app/common"
 	"time"
 
-	"github.com/gin-gonic/gin"
 	"github.com/go-viper/mapstructure/v2"
 )
 
@@ -20,61 +20,78 @@ type InstanceBackup struct {
 	TimeFormatted string
 }
 
-func HandleGETBackups(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETBackups(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		backups, err := GetInstanceBackups(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance backups: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance backups: %s", err.Error()))
+			return
 		}
 
 		config, err := GetInstanceConfig(vm_path, auth) // only used for the VM's name
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			return
 		}
 
-		c.HTML(http.StatusOK, "html/backups.html", gin.H{
+		w.Header().Set("Content-Type", "text/html")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/index.html", map[string]any{
 			"global":  common.Global,
 			"page":    "backups",
 			"backups": backups,
 			"config":  config,
 		})
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-		c.Redirect(http.StatusFound, "/login")
+			w.Write(body.Bytes())
+			return
+		}
+	} else {
+		http.Redirect(w, r, "/login", http.StatusFound)
+		return
 	}
 }
 
-func HandleGETBackupsFragment(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETBackupsFragment(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil { // user should be authed, try to return index with population
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		backups, err := GetInstanceBackups(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance backups: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance backups: %s", err.Error()))
+			return
 		}
 
-		c.Header("Content-Type", "text/plain")
-		err = common.TMPL.ExecuteTemplate(c.Writer, "html/backups-backups.go.tmpl", gin.H{
+		w.Header().Set("Content-Type", "text/plain")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/backups-backups.go.tmpl", map[string]any{
 			"backups": backups,
 		})
 		if err != nil {
-			c.Status(http.StatusInternalServerError)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-			c.Status(http.StatusOK)
+			w.Write(body.Bytes())
+			return
 		}
 	} else { // return 401
-		c.Status(http.StatusUnauthorized)
+		w.WriteHeader(http.StatusUnauthorized)
+		return
 	}
 }
 

app/routes/config.go

@@ -1,6 +1,7 @@
 package routes
 
 import (
+	"bytes"
 	"fmt"
 	"net/http"
 	paas "proxmoxaas-common-lib"
@@ -8,7 +9,6 @@ import (
 	"slices"
 	"sort"
 
-	"github.com/gin-gonic/gin"
 	"github.com/go-viper/mapstructure/v2"
 )
 
@@ -31,24 +31,26 @@ type PoolConfig struct {
 	}
 }
 
-func HandleGETConfig(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETConfig(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		config, err := GetInstanceConfig(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			return
 		}
 
 		if config.Type == "VM" { // if VM, fetch CPU types from node
 			config.ProctypeSelect, err = GetCPUTypes(vm_path, config.Pool, auth)
 			if err != nil {
-				common.HandleNonFatalError(c, fmt.Errorf("error encountered getting proctypes: %s", err.Error()))
+				common.HandleNonFatalError(w, fmt.Errorf("error encountered getting proctypes: %s", err.Error()))
+				return
 			}
 		}
 		for i, cpu := range config.ProctypeSelect.Options {
@@ -57,125 +59,155 @@ func HandleGETConfig(c *gin.Context) {
 			}
 		}
 
-		c.HTML(http.StatusOK, "html/config.html", gin.H{
+		w.Header().Set("Content-Type", "text/html")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/config.html", map[string]any{
 			"global": common.Global,
 			"page":   "config",
 			"config": config,
 		})
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-		c.Redirect(http.StatusFound, "/login")
+			w.Write(body.Bytes())
+			return
+		}
+	} else {
+		http.Redirect(w, r, "/login", http.StatusFound)
+		return
 	}
 }
 
-func HandleGETConfigVolumesFragment(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETConfigVolumesFragment(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		config, err := GetInstanceConfig(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			return
 		}
 
-		c.Header("Content-Type", "text/plain")
-		err = common.TMPL.ExecuteTemplate(c.Writer, "html/config-volumes.go.tmpl", gin.H{
+		w.Header().Set("Content-Type", "text/plain")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/config-volumes.go.tmpl", map[string]any{
 			"config": config,
 		})
 		if err != nil {
-			c.Status(http.StatusInternalServerError)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-			c.Status(http.StatusOK)
+			w.Write(body.Bytes())
+			return
 		}
 	} else {
-		c.Status(http.StatusUnauthorized)
+		w.WriteHeader(http.StatusUnauthorized)
+		return
 	}
 }
 
-func HandleGETConfigNetsFragment(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETConfigNetsFragment(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		config, err := GetInstanceConfig(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			return
 		}
 
-		c.Header("Content-Type", "text/plain")
-		err = common.TMPL.ExecuteTemplate(c.Writer, "html/config-nets.go.tmpl", gin.H{
+		w.Header().Set("Content-Type", "text/plain")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/config-nets.go.tmpl", map[string]any{
 			"config": config,
 		})
 		if err != nil {
-			c.Status(http.StatusInternalServerError)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-			c.Status(http.StatusOK)
+			w.Write(body.Bytes())
+			return
 		}
-	} else {
-		c.Status(http.StatusUnauthorized)
+	} else { // return 401
+		w.WriteHeader(http.StatusUnauthorized)
+		return
 	}
 }
 
-func HandleGETConfigDevicesFragment(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETConfigDevicesFragment(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		config, err := GetInstanceConfig(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			return
 		}
 
-		c.Header("Content-Type", "text/plain")
-		err = common.TMPL.ExecuteTemplate(c.Writer, "html/config-devices.go.tmpl", gin.H{
+		w.Header().Set("Content-Type", "text/plain")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/config-devices.go.tmpl", map[string]any{
 			"config": config,
 		})
 		if err != nil {
-			c.Status(http.StatusInternalServerError)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-			c.Status(http.StatusOK)
+			w.Write(body.Bytes())
+			return
 		}
-	} else {
-		c.Status(http.StatusUnauthorized)
+	} else { // return 401
+		w.WriteHeader(http.StatusUnauthorized)
+		return
 	}
 }
 
-func HandleGETConfigBootFragment(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETConfigBootFragment(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		vm_path, err := common.GetInstancePathFromRequest(c)
+		vm_path, err := common.GetInstancePathFromRequest(r)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
 
 		config, err := GetInstanceConfig(vm_path, auth)
 		if err != nil {
-			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			common.HandleNonFatalError(w, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+			return
 		}
 
-		c.Header("Content-Type", "text/plain")
-		err = common.TMPL.ExecuteTemplate(c.Writer, "html/config-boot.go.tmpl", gin.H{
+		w.Header().Set("Content-Type", "text/plain")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/config-boot.go.tmpl", map[string]any{
 			"config": config,
 		})
 		if err != nil {
-			c.Status(http.StatusInternalServerError)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-			c.Status(http.StatusOK)
+			w.Write(body.Bytes())
+			return
 		}
-	} else {
-		c.Status(http.StatusUnauthorized)
+	} else { // return 401
+		w.WriteHeader(http.StatusUnauthorized)
+		return
 	}
 }
 

app/routes/index.go

@@ -1,13 +1,13 @@
 package routes
 
 import (
+	"bytes"
 	"fmt"
 	"net/http"
 	paas "proxmoxaas-common-lib"
 	"proxmoxaas-dashboard/app/common"
 	"strconv"
 
-	"github.com/gin-gonic/gin"
 	"github.com/go-viper/mapstructure/v2"
 )
 
@@ -45,46 +45,61 @@ type InstanceStatus struct {
 	Status string
 }
 
-func HandleGETIndex(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETIndex(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil { // user should be authed, try to return index with population
 		instances, _, err := GetClusterResources(auth)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
-		page := gin.H{
+		page := map[string]any{
 			"global":    common.Global,
 			"page":      "index",
 			"instances": instances,
 		}
-		c.HTML(http.StatusOK, "html/index.html", page)
+
+		w.Header().Set("Content-Type", "text/html")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/index.html", page)
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		} else {
+			w.Write(body.Bytes())
+			return
+		}
 	} else { // return index without populating
-		c.Redirect(http.StatusFound, "/login") // if user is not authed, redirect user to login page
+		http.Redirect(w, r, "/login", http.StatusFound)
+		return
 	}
 }
 
-func HandleGETInstancesFragment(c *gin.Context) {
-	auth, err := common.GetAuthFromRequest(c)
+func HandleGETInstancesFragment(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil { // user should be authed, try to return index with population
 		instances, _, err := GetClusterResources(auth)
 		if err != nil {
-			common.HandleNonFatalError(c, err)
+			common.HandleNonFatalError(w, err)
 			return
 		}
-		c.Header("Content-Type", "text/plain")
-		err = common.TMPL.ExecuteTemplate(c.Writer, "html/index-instances.go.tmpl", gin.H{
+
+		w.Header().Set("Content-Type", "text/plain")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/index-instances.go.tmpl", map[string]any{
 			"instances": instances,
 		})
 		if err != nil {
-			c.Status(http.StatusInternalServerError)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-			c.Status(http.StatusOK)
+			w.Write(body.Bytes())
+			return
 		}
 	} else { // return 401
-		c.Status(http.StatusUnauthorized)
+		w.WriteHeader(http.StatusUnauthorized)
+		return
 	}
-
 }
 
 func GetClusterResources(auth paas.Auth) (map[uint]InstanceCard, map[string]Node, error) {

app/routes/login.go

@@ -1,11 +1,11 @@
 package routes
 
 import (
+	"bytes"
 	"fmt"
 	"net/http"
 	"proxmoxaas-dashboard/app/common"
 
-	"github.com/gin-gonic/gin"
 	"github.com/go-viper/mapstructure/v2"
 )
 
@@ -41,10 +41,11 @@ func GetLoginRealms() ([]Realm, error) {
 	return realms, nil
 }
 
-func HandleGETLogin(c *gin.Context) {
+func HandleGETLogin(w http.ResponseWriter, r *http.Request) {
 	realms, err := GetLoginRealms()
 	if err != nil {
-		common.HandleNonFatalError(c, err)
+		common.HandleNonFatalError(w, err)
+		return
 	}
 
 	sel := common.Select{
@@ -60,9 +61,18 @@ func HandleGETLogin(c *gin.Context) {
 		})
 	}
 
-	c.HTML(http.StatusOK, "html/login.html", gin.H{
+	w.Header().Set("Content-Type", "text/html")
+	body := bytes.Buffer{}
+	err = common.TMPL.ExecuteTemplate(&body, "html/login.html", map[string]any{
 		"global": common.Global,
 		"page":   "login",
 		"realms": sel,
 	})
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	} else {
+		w.Write(body.Bytes())
+		return
+	}
 }

app/routes/settings.go

@@ -1,20 +1,35 @@
 package routes
 
 import (
+	"bytes"
 	"net/http"
 	"proxmoxaas-dashboard/app/common"
-
-	"github.com/gin-gonic/gin"
 )
 
-func HandleGETSettings(c *gin.Context) {
-	_, err := common.GetAuthFromRequest(c)
+func HandleGETSettings(w http.ResponseWriter, r *http.Request) {
+	auth, err := common.GetAuthFromRequest(r)
 	if err == nil {
-		c.HTML(http.StatusOK, "html/settings.html", gin.H{
+		_, err := GetUserBasic(auth)
+		if err != nil {
+			common.HandleNonFatalError(w, err)
+			return
+		}
+
+		w.Header().Set("Content-Type", "text/html")
+		body := bytes.Buffer{}
+		err = common.TMPL.ExecuteTemplate(&body, "html/settings.html", map[string]any{
 			"global": common.Global,
 			"page":   "settings",
 		})
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		} else {
-		c.Redirect(http.StatusFound, "/login")
+			w.Write(body.Bytes())
+			return
+		}
+	} else {
+		http.Redirect(w, r, "/login", http.StatusFound)
+		return
 	}
 }

go.mod

@@ -4,7 +4,6 @@ go 1.27.0
 
 require (
 	github.com/gerow/go-color v0.0.0-20140219113758-125d37f527f1
-	github.com/gin-gonic/gin v1.12.0
 	github.com/go-viper/mapstructure/v2 v2.5.0
 	github.com/tdewolff/minify/v2 v2.24.17
 	proxmoxaas-common-lib v0.0.0
@@ -15,35 +14,4 @@ replace proxmoxaas-common-lib => ./proxmoxaas-common-lib
 
 replace web => ./dist/web
 
-require (
-	github.com/bytedance/gopkg v0.1.4 // indirect
-	github.com/bytedance/sonic v1.15.2 // indirect
-	github.com/bytedance/sonic/loader v0.5.2 // indirect
-	github.com/cloudwego/base64x v0.1.7 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.15 // indirect
-	github.com/gin-contrib/sse v1.1.1 // indirect
-	github.com/go-playground/locales v0.14.1 // indirect
-	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.30.3 // indirect
-	github.com/goccy/go-json v0.10.6 // indirect
-	github.com/goccy/go-yaml v1.19.2 // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.4.0 // indirect
-	github.com/leodido/go-urn v1.5.0 // indirect
-	github.com/mattn/go-isatty v0.0.24 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.4.3 // indirect
-	github.com/quic-go/qpack v0.6.0 // indirect
-	github.com/quic-go/quic-go v0.61.0 // indirect
-	github.com/tdewolff/parse/v2 v2.8.16 // indirect
-	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.3.2 // indirect
-	go.mongodb.org/mongo-driver/v2 v2.8.1 // indirect
-	golang.org/x/arch v0.30.0 // indirect
-	golang.org/x/crypto v0.55.0 // indirect
-	golang.org/x/net v0.58.0 // indirect
-	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/text v0.41.0 // indirect
-	google.golang.org/protobuf v1.36.12 // indirect
-)
+require github.com/tdewolff/parse/v2 v2.8.16 // indirect