Replace --refresh-interval flag with --refresh

README.md

@@ -58,7 +58,7 @@ The remaining four endpoints—`/available_extensions`, `/enabled_extensions`, `
 
 ## Refresh
 
-If a positive-value `refresh=<integer><unit>` query parameter is provided, the page will reload after that interval.
+If the `--refresh` flag is passed and a positive-value `refresh=<integer><unit>` query parameter is provided, the page will reload after that interval.
 
 This can be used to generate a sort of slideshow of files.
 
@@ -122,10 +122,10 @@ Flags:
       --minimum-files uint32   skip directories with file counts below this value (default 1)
       --page-length uint32     pagination length for statistics and debug pages
   -p, --port uint16            port to listen on (default 8080)
-      --prefix string             path with which to prefix all listeners (for reverse proxying)
+      --prefix string          root path for http handlers (for reverse proxying) (default "/")
       --profile                register net/http/pprof handlers
   -r, --recursive              recurse into subdirectories
-      --refresh-interval string   force refresh interval equal to this duration (minimum 500ms)
+      --refresh                enable automatic page refresh via query parameter
       --russian                remove selected images after serving
   -s, --sort                   enable sorting
       --text                   enable support for text files

cmd/root.go

@@ -6,13 +6,12 @@ package cmd
 
 import (
 	"log"
-	"time"
 
 	"github.com/spf13/cobra"
 )
 
 const (
-	ReleaseVersion string = "0.82.0"
+	ReleaseVersion string = "0.83.0"
 )
 
 var (
@@ -33,7 +32,7 @@ var (
 	Prefix           string
 	Profile          bool
 	Recursive        bool
-	RefreshInterval  string
+	Refresh          bool
 	Russian          bool
 	Sorting          bool
 	Text             bool
@@ -45,16 +44,6 @@ var (
 		Use:   "roulette <path> [path]...",
 		Short: "Serves random media from the specified directories.",
 		Args:  cobra.MinimumNArgs(1),
-		PreRunE: func(cmd *cobra.Command, args []string) error {
-			if RefreshInterval != "" {
-				interval, err := time.ParseDuration(RefreshInterval)
-				if err != nil || interval < 500*time.Millisecond {
-					return ErrIncorrectRefreshInterval
-				}
-			}
-
-			return nil
-		},
 		RunE: func(cmd *cobra.Command, args []string) error {
 			err := ServePage(args)
 			if err != nil {
@@ -88,10 +77,10 @@ func init() {
 	rootCmd.Flags().Uint32Var(&MinimumFileCount, "minimum-files", 1, "skip directories with file counts below this value")
 	rootCmd.Flags().Uint32Var(&PageLength, "page-length", 0, "pagination length for statistics and debug pages")
 	rootCmd.Flags().Uint16VarP(&Port, "port", "p", 8080, "port to listen on")
-	rootCmd.Flags().StringVar(&Prefix, "prefix", "", "path with which to prefix all listeners (for reverse proxying)")
+	rootCmd.Flags().StringVar(&Prefix, "prefix", "/", "root path for http handlers (for reverse proxying)")
 	rootCmd.Flags().BoolVar(&Profile, "profile", false, "register net/http/pprof handlers")
 	rootCmd.Flags().BoolVarP(&Recursive, "recursive", "r", false, "recurse into subdirectories")
-	rootCmd.Flags().StringVar(&RefreshInterval, "refresh-interval", "", "force refresh interval equal to this duration (minimum 500ms)")
+	rootCmd.Flags().BoolVar(&Refresh, "refresh", false, "enable automatic page refresh via query parameter")
 	rootCmd.Flags().BoolVar(&Russian, "russian", false, "remove selected images after serving")
 	rootCmd.Flags().BoolVarP(&Sorting, "sort", "s", false, "enable sorting")
 	rootCmd.Flags().BoolVar(&Text, "text", false, "enable support for text files")

cmd/uri.go

@@ -14,18 +14,12 @@ import (
 )
 
 func refreshInterval(r *http.Request) (int64, string) {
-	var interval string
+	interval := r.URL.Query().Get("refresh")
-
-	if RefreshInterval == "" {
-		interval = r.URL.Query().Get("refresh")
-	} else {
-		interval = RefreshInterval
-	}
 
 	duration, err := time.ParseDuration(interval)
 
 	switch {
-	case err != nil || duration == 0:
+	case err != nil || duration == 0 || !Refresh:
 		return 0, "0ms"
 	case duration < 500*time.Millisecond:
 		return 500, "500ms"
@@ -92,14 +86,22 @@ func generateQueryParams(filters *filters, sortOrder, refreshInterval string) st
 		hasParams = true
 	}
 
+	if Refresh {
 		if hasParams {
 			queryParams.WriteString("&")
 		}
 		queryParams.WriteString(fmt.Sprintf("refresh=%s", refreshInterval))
 
+		hasParams = true
+	}
+
+	if hasParams {
 		return queryParams.String()
 	}
 
+	return ""
+}
+
 func stripQueryParams(request string) (string, error) {
 	uri, err := url.Parse(request)
 	if err != nil {

cmd/web.go

@@ -243,7 +243,7 @@ func serveMedia(paths []string, regexes *regexes, formats *types.Types) httprout
 			return
 		}
 
-		fileUri := Prefix + "/" + generateFileUri(path)
+		fileUri := Prefix + generateFileUri(path)
 
 		fileName := filepath.Base(path)
 
@@ -385,9 +385,13 @@ func ServePage(args []string) error {
 
 	mux.PanicHandler = serverErrorHandler()
 
-	Prefix = strings.TrimSuffix(Prefix, "/")
+	if !strings.HasSuffix(Prefix, "/") {
+		Prefix = Prefix + "/"
+	}
 
-	register(mux, Prefix+"/", serveRoot(paths, regexes, cache, formats))
+	register(mux, Prefix, serveRoot(paths, regexes, cache, formats))
+
+	Prefix = strings.TrimSuffix(Prefix, "/")
 
 	if Prefix != "" {
 		register(mux, "/", redirectRoot())