From 97e3b47b19028f11b99827bac0c18624abb82fc1 Mon Sep 17 00:00:00 2001
From: Seednode <git@seedno.de>
Date: Fri, 28 Oct 2022 19:49:49 -0500
Subject: [PATCH] Only seed rng once, at initialization, and speed up picking
 random file by using rand.Intn instead of shuffling the slice

---
 cmd/files.go   | 6 ++----
 cmd/version.go | 2 +-
 cmd/web.go     | 3 +++
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/cmd/files.go b/cmd/files.go
index 0528cde..c23344b 100644
--- a/cmd/files.go
+++ b/cmd/files.go
@@ -495,13 +495,11 @@ func pickFile(args []string, filters *Filters, sort string, fileCache *[]string)
 		}
 	}
 
-	rand.Seed(time.Now().UnixNano())
-	rand.Shuffle(len(fileList), func(i, j int) { fileList[i], fileList[j] = fileList[j], fileList[i] })
+	for true {
+		i := rand.Intn(len(fileList))
 
-	for i := 0; i < len(fileList); i++ {
 		filePath := fileList[i]
 
-		// If not caching, check for valid images just before serving, to speed up scanning
 		if !Cache {
 			isImage, err := isImage(filePath)
 			if err != nil {
diff --git a/cmd/version.go b/cmd/version.go
index 8c31a1b..5832493 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -10,7 +10,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var Version = "0.20.2"
+var Version = "0.20.3"
 
 func init() {
 	rootCmd.AddCommand(versionCmd)
diff --git a/cmd/web.go b/cmd/web.go
index c050c34..6a06094 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -7,6 +7,7 @@ package cmd
 import (
 	"fmt"
 	"io"
+	"math/rand"
 	"net/http"
 	"net/url"
 	"os"
@@ -498,6 +499,8 @@ func ServePage(args []string) error {
 
 	re := regexp.MustCompile(`(.+)([0-9]{3})(\..+)`)
 
+	rand.Seed(time.Now().UnixNano())
+
 	fileCache := []string{}
 
 	http.Handle("/", serveHtmlHandler(paths, *re, &fileCache))