From 4b5f2aad96324fca04d538adc996357d48c7ace8 Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Mon, 6 Mar 2023 14:41:57 +0300
Subject: [PATCH] Do not overwrite existing file

---
 main.go | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/main.go b/main.go
index a31bb51..a54a14b 100644
--- a/main.go
+++ b/main.go
@@ -5,19 +5,21 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
+	"strconv"
 	"strings"
 
 	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 func main() {
+	log.SetFlags(0)
 	url := strings.TrimPrefix(os.Args[1], "-") // -?https://MACHINE/api/v4/files/FILE
 	s := strings.Split(url, "/")
 	machine, fileId := s[2], s[6]
 
 	login, password := findInNetrc(machine)
 	if login == "" || password == "" {
-		fmt.Fprintln(os.Stderr, "No credentials found for:", machine)
+		log.Println("No credentials found for:", machine)
 		os.Exit(1)
 	}
 
@@ -31,24 +33,35 @@ func main() {
 		log.Fatalln(err)
 	}
 	if info == nil {
-		fmt.Fprintln(os.Stderr, resp)
+		fmt.Println(resp)
 		os.Exit(1)
 	}
 	filename := info.Name
 	if len(os.Args) > 2 {
 		filename = os.Args[2]
 	} else {
-		fmt.Fprintln(os.Stderr, "Name:", info.Name)
-		fmt.Fprintln(os.Stderr, "Type:", info.MimeType)
-		fmt.Fprintln(os.Stderr, "Size:", info.Size)
-		fmt.Fprintln(os.Stderr, "Download? Ctrl-D/C")
+		log.Println("Name:", info.Name)
+		log.Println("Type:", info.MimeType)
+		log.Println("Size:", info.Size)
+		log.Println("Download? Ctrl-D/C")
 		os.Stdin.Read(make([]byte, 1))
 	}
 	data, _, err := client.GetFile(fileId)
 	if err != nil {
 		log.Fatalln(err)
 	}
-	if err := ioutil.WriteFile(filename, data, os.FileMode(0666)); err != nil {
-		panic(err)
+
+	dstCtr := 0
+	dst := filename
+	for {
+		if _, err = os.Stat(dst); err != nil {
+			break
+		}
+		dst = filename + strconv.Itoa(dstCtr)
+		dstCtr++
+	}
+	if err := ioutil.WriteFile(dst, data, os.FileMode(0666)); err != nil {
+		log.Fatalln(err)
 	}
+	fmt.Println(dst)
 }
-- 
2.44.0