From 83521eeae650f99ac5f6eb67edeb6fd6214fbd8a Mon Sep 17 00:00:00 2001
From: Jan Bader <jan.bader@ub-software.de>
Date: Sat, 21 Nov 2020 21:43:22 +0100
Subject: [PATCH] Implement moving instead of deleting

---
 main.go | 37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/main.go b/main.go
index 082dfa5..cf7e628 100644
--- a/main.go
+++ b/main.go
@@ -19,9 +19,42 @@ var fromFile = flag.String("from-file", "", "Load results file from <path>")
 var toFile = flag.String("to-file", "", "Save results to <path>")
 var deleteDupesIn = flag.String("delete-dupes-in", "", "Delete duplicates if they are contained in <path>")
 var promptForDelete = flag.Bool("delete-prompt", false, "Ask which file to keep for each dupe-set")
+var moveToFolder = flag.String("move-files", "", "Move files to <path> instead of deleting them")
 var force = flag.Bool("force", false, "Actually delete files. Without this options, the files to be deleted are only printed")
 var verbose = flag.Bool("verbose", false, "Output additional information")
 
+func Delete(path string) {
+	if !*force {
+		return
+	}
+
+	if *moveToFolder == "" {
+		os.Remove(path)
+		return
+	}
+
+	MoveButDontOvewrite(path, *moveToFolder)
+}
+
+func MoveButDontOvewrite(path string, targetPath string) {
+	num := 0
+
+	filename := filepath.Base(path)
+
+	target := filepath.Join(targetPath, filename)
+
+	for {
+		_, err := os.Stat(target)
+		if os.IsNotExist(err) {
+			os.Rename(path, target)
+			return
+		}
+
+		target = filepath.Join(targetPath, filename+"."+strconv.Itoa(num))
+		num++
+	}
+}
+
 func main() {
 	flag.Parse()
 
@@ -65,7 +98,7 @@ func main() {
 					if strings.HasPrefix(filepath.Clean(file), deleteIn) {
 						fmt.Println("Would delete ", file)
 						if *force {
-							os.Remove(file)
+							Delete(file)
 						}
 					}
 				}
@@ -84,7 +117,7 @@ func main() {
 				for i, file := range duplicateFiles {
 					fmt.Println(i+1, file)
 					if *force {
-						os.Remove(file)
+						Delete(file)
 					}
 				}