add -re option to rename file

README.md

@@ -305,6 +305,23 @@ You can use the `-start`, `-end` or `-items` option to specify the download rang
 -items
     	File lines to download. Separated by commas like: 1,5,6,8-10
 ```
+You can use the `-re` option to rename the file with timestamp suffix:
+
+```console
+$ lux -re "https://www.bilibili.com/video/BV1KF411Z7d9/"
+
+ Site:      哔哩哔哩 bilibili.com
+ Title:     每一种热爱都值得全力以赴！-1692149347
+ Type:      video
+ Stream:
+     [32-7]  -------------------
+     Quality:         清晰 480P avc1.64001F
+     Size:            17.88 MiB (18753237 Bytes)
+     # download with: lux -f 32-7 ...
+
+17.88 MiB / 17.88 MiB [===================================] 3.74 MiB p/s 100.00% 5.0s
+
+```
 
 ### Resume a download
 

app/app.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/fatih/color"
 	"github.com/urfave/cli/v2"
@@ -152,6 +153,11 @@ func New() *cli.App {
 				Value:   10,
 				Usage:   "The number of download thread (only works for multiple-parts video)",
 			},
+			&cli.BoolFlag{
+				Name:    "rename",
+				Aliases: []string{"re"},
+				Usage:   "Rename the file with timestamp suffix",
+			},
 
 			// Aria2
 			&cli.BoolFlag{
@@ -285,6 +291,12 @@ func download(c *cli.Context, videoURL string) error {
 		return err
 	}
 
+	if c.Bool("rename") {
+		for _, v := range data {
+			v.Title += fmt.Sprintf("-%v", time.Now().Unix())
+		}
+	}
+
 	if c.Bool("json") {
 		e := json.NewEncoder(os.Stdout)
 		e.SetIndent("", "\t")