feat: add send file filename override (#7) (thanks @plattenschieber)

Keep MIME detection independent of --filename override.
The display name should only affect what the recipient sees,
not how the file is handled (image/video/document routing).

CHANGELOG.md

@@ -10,6 +10,10 @@
 
 - Build: preserve existing `CGO_CFLAGS` when adding GCC 15+ workaround. (#8 — thanks @ramarivera)
 
+### Added
+
+- Send: `wacli send file --filename` to override display name for uploads. (#7 — thanks @plattenschieber)
+
 ## 0.1.0 - 2026-01-01
 
 ### Added

cmd/wacli/send_file.go

@@ -20,16 +20,20 @@ import (
 func sendFile(ctx context.Context, a interface {
 	WA() app.WAClient
 	DB() *store.DB
-}, to types.JID, filePath, caption, mimeOverride string) (string, map[string]string, error) {
+}, to types.JID, filePath, filename, caption, mimeOverride string) (string, map[string]string, error) {
 	data, err := os.ReadFile(filePath)
 	if err != nil {
 		return "", nil, err
 	}
 
-	name := filepath.Base(filePath)
+	name := strings.TrimSpace(filename)
+	if name == "" {
+		name = filepath.Base(filePath)
+	}
 	mimeType := strings.TrimSpace(mimeOverride)
 	if mimeType == "" {
-		mimeType = mime.TypeByExtension(strings.ToLower(filepath.Ext(name)))
+		// Use filePath for MIME detection, not the display name override
+		mimeType = mime.TypeByExtension(strings.ToLower(filepath.Ext(filePath)))
 	}
 	if mimeType == "" {
 		sniff := data

cmd/wacli/send_file_cmd.go

@@ -13,6 +13,7 @@ import (
 func newSendFileCmd(flags *rootFlags) *cobra.Command {
 	var to string
 	var filePath string
+	var filename string
 	var caption string
 	var mimeOverride string
 
@@ -45,7 +46,7 @@ func newSendFileCmd(flags *rootFlags) *cobra.Command {
 				return err
 			}
 
-			msgID, meta, err := sendFile(ctx, a, toJID, filePath, caption, mimeOverride)
+			msgID, meta, err := sendFile(ctx, a, toJID, filePath, filename, caption, mimeOverride)
 			if err != nil {
 				return err
 			}
@@ -65,6 +66,7 @@ func newSendFileCmd(flags *rootFlags) *cobra.Command {
 
 	cmd.Flags().StringVar(&to, "to", "", "recipient phone number or JID")
 	cmd.Flags().StringVar(&filePath, "file", "", "path to file")
+	cmd.Flags().StringVar(&filename, "filename", "", "display name for the file (defaults to basename of --file)")
 	cmd.Flags().StringVar(&caption, "caption", "", "caption (images/videos/documents)")
 	cmd.Flags().StringVar(&mimeOverride, "mime", "", "override detected mime type")
 	return cmd