build, cmd/strelaypoolsrv: Build assets using standard script

build.go

@@ -563,16 +563,17 @@ func listFiles(dir string) []string {
 
 func rebuildAssets() {
 	runPipe("lib/auto/gui.files.go", "go", "run", "script/genassets.go", "gui")
+	runPipe("cmd/strelaypoolsrv/auto/gui.go", "go", "run", "script/genassets.go", "cmd/strelaypoolsrv/gui")
 }
 
 func lazyRebuildAssets() {
-	if shouldRebuildAssets() {
+	if shouldRebuildAssets("lib/auto/gui.files.go", "gui") || shouldRebuildAssets("cmd/strelaypoolsrv/auto/gui.go", "cmd/strelaypoolsrv/auto/gui") {
 		rebuildAssets()
 	}
 }
 
-func shouldRebuildAssets() bool {
-	info, err := os.Stat("lib/auto/gui.files.go")
+func shouldRebuildAssets(target, srcdir string) bool {
+	info, err := os.Stat(target)
 	if err != nil {
 		// If the file doesn't exist, we must rebuild it
 		return true
@@ -582,7 +583,7 @@ func shouldRebuildAssets() bool {
 	// so we should rebuild it.
 	currentBuild := info.ModTime()
 	assetsAreNewer := false
-	filepath.Walk("gui", func(path string, info os.FileInfo, err error) error {
+	filepath.Walk(srcdir, func(path string, info os.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}

cmd/strelaypoolsrv/auto/.gitignore

@@ -0,0 +1 @@
+gui.go

cmd/strelaypoolsrv/main.go

@@ -194,11 +194,6 @@ func handleAssets(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if r.Header.Get("If-Modified-Since") == auto.AssetsBuildDate {
-		w.WriteHeader(http.StatusNotModified)
-		return
-	}
-
 	mtype := mimeTypeForFile(path)
 	if len(mtype) != 0 {
 		w.Header().Set("Content-Type", mtype)
@@ -214,8 +209,6 @@ func handleAssets(w http.ResponseWriter, r *http.Request) {
 		gr.Close()
 	}
 	w.Header().Set("Content-Length", fmt.Sprintf("%d", len(bs)))
-	w.Header().Set("Last-Modified", auto.AssetsBuildDate)
-	w.Header().Set("Cache-Control", "public")
 
 	w.Write(bs)
 }