make sure static assets are cached and not reloaded

internal/app/app.go

@@ -12,6 +12,7 @@ import (
 	"github.com/ddvk/rmfakecloud/internal/config"
 	"github.com/ddvk/rmfakecloud/internal/hwr"
 	"github.com/ddvk/rmfakecloud/internal/storage"
+
 	"github.com/ddvk/rmfakecloud/internal/storage/fs"
 	"github.com/ddvk/rmfakecloud/internal/ui"
 

internal/common/staticfs.go

@@ -0,0 +1,41 @@
+package common
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+)
+type staticFS struct {
+	http.FileSystem
+	LastModified time.Time
+}
+type StaticFileWrapper struct {
+	http.File
+	LastModified time.Time
+}
+type StaticFileInfoWrapper struct {
+	os.FileInfo
+	LastModfied time.Time
+}
+func (f *StaticFileInfoWrapper) ModTime() time.Time {
+	return f.LastModfied
+}
+func (f *StaticFileWrapper) Stat() (os.FileInfo, error) {
+	fmt.Println("calling stat")
+	fi, err := f.File.Stat()
+	return &StaticFileInfoWrapper {FileInfo: fi, LastModfied: f.LastModified}, err
+}
+func (f *staticFS) Open(name string) (http.File, error) {
+	file, err := f.FileSystem.Open(name)
+	return &StaticFileWrapper {File: file, LastModified: f.LastModified}, err
+}
+
+// NewLastModifiedFS returns a filesystem with a fixed LastModified 
+// to enable caching of embedded assets
+func NewLastModifiedFS(fs http.FileSystem, lastModified time.Time) http.FileSystem {
+	return &staticFS {
+		FileSystem: fs,
+		LastModified: lastModified,
+	}
+}

internal/ui/handlers.go

@@ -149,6 +149,7 @@ func (app *ReactAppWrapper) login(c *gin.Context) {
 		return
 	}
 	log.Debug("cookie expires after: ", expiresAfter)
+	c.SetSameSite(http.SameSiteStrictMode)
 	c.SetCookie(cookieName, tokenString, int(expiresAfter.Seconds()), "/", "", app.cfg.HTTPSCookie, true)
 
 	c.String(http.StatusOK, tokenString)

internal/ui/routes.go

@@ -18,9 +18,6 @@ func (app *ReactAppWrapper) RegisterRoutes(router *gin.Engine) {
 	router.GET("/robots.txt", func(c *gin.Context) {
 		c.FileFromFS("/robots.txt", app.fs)
 	})
-	router.GET("/pdf.worker.js", func(c *gin.Context) {
-		c.FileFromFS("/pdf.worker.js", app.fs)
-	})
 
 	//hack for index.html
 	router.NoRoute(func(c *gin.Context) {

internal/ui/ui.go

@@ -5,6 +5,7 @@ import (
 	"io/fs"
 	"net/http"
 	"path"
+	"time"
 
 	"github.com/ddvk/rmfakecloud/internal/app/hub"
 	"github.com/ddvk/rmfakecloud/internal/common"
@@ -70,6 +71,8 @@ type ReactAppWrapper struct {
 // hack for serving index.html on /
 const indexReplacement = "/default"
 
+
+
 // New Create a React app
 func New(cfg *config.Config,
 	userStorer storage.UserStorer,
@@ -91,7 +94,7 @@ func New(cfg *config.Config,
 		hub:             h,
 	}
 	staticWrapper := ReactAppWrapper{
-		fs:            http.FS(sub),
+		fs:            common.NewLastModifiedFS(http.FS(sub), time.Now()),
 		prefix:        "/static",
 		cfg:           cfg,
 		userStorer:    userStorer,

ui/src/pages/Documents/File.js

@@ -8,14 +8,18 @@ import constants from "../../common/constants";
 import apiservice from "../../services/api.service"
 import NameTag from "../../components/NameTag"
 
-import { pdfjs,Document, Page } from "react-pdf";
+import { pdfjs, Document, Page } from "react-pdf";
 // import 'react-pdf/dist/Page/AnnotationLayer.css';
 // import 'react-pdf/dist/Page/TextLayer.css';
 pdfjs.GlobalWorkerOptions.workerSrc = new URL(
   'pdfjs-dist/build/pdf.worker.min.mjs',
   import.meta.url,
 ).toString();
 
+const options = {
+	worker: new pdfjs.PDFWorker()
+}
+
 export default function FileViewer({ file, onSelect }) {
   const { data } = file;
 
@@ -98,7 +102,7 @@ export default function FileViewer({ file, onSelect }) {
 
       {file && (
         <div ref={parent} style={{height: "95%"}}>
-          <Document file={downloadUrl} onLoadSuccess={onLoadSuccess}>
+		  <Document file={downloadUrl} onLoadSuccess={onLoadSuccess} options={options}>
             <Page pageNumber={page} 
 							// width={ width } 
 							height={ height}