Move and refactor files and some more changes :3

utils/file.go

@@ -0,0 +1,49 @@
+package utils
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func FreeFileName(filename string) (string, bool) {
+	ext := filepath.Ext(filename)
+	base := strings.TrimSuffix(filename, ext)
+	// checks if a .tar stands before the "actual" file ending
+	if extraExt := filepath.Ext(base); extraExt == ".tar" {
+		ext = extraExt + ext
+		base = strings.TrimSuffix(base, extraExt)
+	}
+	j := 0
+	for ; ; j++ {
+		if _, stat := os.Stat(filename); stat != nil && !os.IsExist(stat) {
+			break
+		}
+		filename = fmt.Sprintf("%s (%d)%s", base, j+1, ext)
+	}
+	return filename, j != 0
+}
+
+func GenerateFilename(name, directory string) string {
+	if runtime.GOOS != "windows" {
+		for _, char := range []string{"/"} {
+			name = strings.ReplaceAll(name, char, "")
+		}
+		Log.Debug("Replaced invalid characters (not windows)")
+	} else {
+		// ahh i love windows :)))
+		for _, char := range []string{"\\", "<", ">", ":", "\"", "/", "|", "?", "*"} {
+			name = strings.ReplaceAll(name, char, "")
+		}
+		Log.Debug("Replaced invalid characters (windows)")
+	}
+
+	filename, changed := FreeFileName(filepath.Join(directory, name))
+	if changed {
+		Log.Debug("File `%s` already exists, changing name to `%s`", filepath.Base(name), filepath.Base(filename))
+	}
+
+	return filename
+}