refactor: streamline video conversion by removing intermediate file generation

cmds/general/help.go

@@ -3,6 +3,7 @@ package general
 import (
 	"fmt"
 	"strings"
+	"sync"
 	"time"
 
 	hc "neo/context"
@@ -13,6 +14,38 @@ func init() {
 	core.Default.Register(Help)
 }
 
+var (
+	cachedMenu string
+	menuOnce   sync.Once
+)
+
+// buildMenuCache generates the static portion of the help menu with a {{PREFIX}} placeholder
+func buildMenuCache() {
+	var sb strings.Builder
+
+	cmdMap := make(map[string][]string)
+	for _, cmd := range core.Default.GetCommands() {
+		cat := cmd.Category
+		if cat == "" {
+			cat = "general"
+		}
+		cmdMap[cat] = append(cmdMap[cat], cmd.Name)
+	}
+
+	for cat, cmds := range cmdMap {
+		sb.WriteString(fmt.Sprintf("\n*📃%s*\n", strings.ToUpper(cat)))
+		for i, cmdName := range cmds {
+			branch := "├"
+			if i == len(cmds)-1 {
+				branch = "└"
+			}
+			sb.WriteString(fmt.Sprintf("%s {{PREFIX}}%s\n", branch, cmdName))
+		}
+	}
+
+	cachedMenu = sb.String()
+}
+
 var Help = &core.Command{
 	Name:        "help",
 	Aliases:     []string{"?", "h", "menu"},
@@ -42,38 +75,21 @@ var Help = &core.Command{
 			pushName = "User"
 		}
 
-		// Header
-		var sb strings.Builder
-		sb.WriteString(fmt.Sprintf("%s *%s*👋\n📬 Need help? Here are all of my commands\n", greeting, pushName))
-
-		// Group commands by category (simulate json object array appending)
-		cmdMap := make(map[string][]string)
-		for _, cmd := range core.Default.GetCommands() {
-			cat := cmd.Category
-			if cat == "" {
-				cat = "general"
-			}
-			cmdMap[cat] = append(cmdMap[cat], cmd.Name)
-		}
-
 		prefix := ctx.Prefix()
 		if prefix == "" {
-			// fallback if they called it somehow internally without prefix
 			prefix = "."
 		}
 
-		// Print categories
-		for cat, cmds := range cmdMap {
-			sb.WriteString(fmt.Sprintf("\n*📃%s*\n", strings.ToUpper(cat)))
-			for i, cmdName := range cmds {
-				branch := "├"
-				if i == len(cmds)-1 {
-					branch = "└"
-				}
-				sb.WriteString(fmt.Sprintf("%s %s%s\n", branch, prefix, cmdName))
-			}
-		}
+		// Calculate the static command layout part only once
+		menuOnce.Do(func() {
+			buildMenuCache()
+		})
 
-		ctx.Reply(sb.String())
+		// Replace placeholder with the dynamically used prefix
+		finalMenu := strings.ReplaceAll(cachedMenu, "{{PREFIX}}", prefix)
+
+		header := fmt.Sprintf("%s *%s*👋\n📬 Need help? Here are all of my commands\n", greeting, pushName)
+
+		ctx.Reply(header + finalMenu)
 	},
 }

cmds/media/sticker.go

@@ -9,6 +9,8 @@ import (
 	hc "neo/context"
 	"neo/core"
 	"neo/helper"
+
+	"go.mau.fi/whatsmeow"
 )
 
 func init() { core.Default.Register(Sticker) }
@@ -50,29 +52,34 @@ var Sticker = &core.Command{
 		var err error
 		var rawWebp []byte
 		var mediaData []byte
+		var downloadable whatsmeow.DownloadableMessage
+		var mediaType string
 
-		if img := msg.GetImageMessage(); img != nil {
-			mediaData, err = ctx.Client().Download(context.Background(), img)
+		switch {
+		case msg.GetImageMessage() != nil:
+			downloadable, mediaType = msg.GetImageMessage(), "image"
+		case quoted != nil && quoted.GetImageMessage() != nil:
+			downloadable, mediaType = quoted.GetImageMessage(), "image"
+		case msg.GetVideoMessage() != nil:
+			downloadable, mediaType = msg.GetVideoMessage(), "video"
+		case quoted != nil && quoted.GetVideoMessage() != nil:
+			downloadable, mediaType = quoted.GetVideoMessage(), "video"
+		case quoted != nil && quoted.GetStickerMessage() != nil:
+			downloadable, mediaType = quoted.GetStickerMessage(), "sticker"
+		}
+
+		if downloadable != nil {
+			mediaData, err = ctx.Client().Download(context.Background(), downloadable)
 			if err == nil {
+				switch mediaType {
+				case "image":
 					rawWebp, err = helper.ConvertImageToWebp(mediaData)
-			}
-		} else if img := quoted.GetImageMessage(); img != nil && quoted != nil {
-			mediaData, err = ctx.Client().Download(context.Background(), img)
-			if err == nil {
-				rawWebp, err = helper.ConvertImageToWebp(mediaData)
-			}
-		} else if vid := msg.GetVideoMessage(); vid != nil {
-			mediaData, err = ctx.Client().Download(context.Background(), vid)
-			if err == nil {
+				case "video":
 					rawWebp, err = helper.ConvertVideoToWebp(mediaData)
+				case "sticker":
+					rawWebp = mediaData
 				}
-		} else if vid := quoted.GetVideoMessage(); vid != nil && quoted != nil {
-			mediaData, err = ctx.Client().Download(context.Background(), vid)
-			if err == nil {
-				rawWebp, err = helper.ConvertVideoToWebp(mediaData)
 			}
-		} else if smsg := quoted.GetStickerMessage(); smsg != nil && quoted != nil {
-			rawWebp, err = ctx.Client().Download(context.Background(), smsg)
 		} else {
 			ctx.Reply("error: reply to image/video/sticker or send with caption")
 			return

helper/media_convert.go

@@ -3,11 +3,7 @@ package helper
 import (
 	"bytes"
 	"fmt"
-	"os"
 	"os/exec"
-	"path/filepath"
-
-	"github.com/google/uuid"
 )
 
 func ConvertImageToWebp(imgData []byte) ([]byte, error) {
@@ -35,35 +31,27 @@ func ConvertImageToWebp(imgData []byte) ([]byte, error) {
 }
 
 func ConvertVideoToWebp(vidData []byte) ([]byte, error) {
-	id := uuid.New().String()
-	gifPath := filepath.Join("temp", fmt.Sprintf("%s.gif", id))
-	webpPath := filepath.Join("temp", fmt.Sprintf("%s.webp", id))
-
-	defer os.Remove(gifPath)
-	defer os.Remove(webpPath)
-
 	ffmpegCmd := exec.Command("ffmpeg",
 		"-y", "-hide_banner", "-loglevel", "error",
 		"-i", "pipe:0",
 		"-ss", "00:00:00", "-t", "00:00:15",
+		"-vcodec", "libwebp",
 		"-vf", "fps=10,scale=720:-1:flags=lanczos:force_original_aspect_ratio=increase,crop=512:512,pad=512:512:(ow-iw)/2:(oh-ih)/2:color=#00000000,setsar=1",
 		"-loop", "0",
+		"-preset", "default",
 		"-an",
-		"-f", "gif", gifPath,
+		"-f", "webp", "pipe:1",
 	)
-	var stderr bytes.Buffer
-	ffmpegCmd.Stderr = &stderr
+
 	ffmpegCmd.Stdin = bytes.NewReader(vidData)
+	var outBuf bytes.Buffer
+	var stderr bytes.Buffer
+	ffmpegCmd.Stdout = &outBuf
+	ffmpegCmd.Stderr = &stderr
+
 	if err := ffmpegCmd.Run(); err != nil {
-		return nil, fmt.Errorf("ffmpeg failed: %w, stderr: %s", err, stderr.String())
+		return nil, fmt.Errorf("ffmpeg direct convert failed: %w, stderr: %s", err, stderr.String())
 	}
 
-	gif2webpCmd := exec.Command("gif2webp", "-quiet", "-q", "60", "-m", "6", gifPath, "-o", webpPath)
-	var g2wStderr bytes.Buffer
-	gif2webpCmd.Stderr = &g2wStderr
-	if err := gif2webpCmd.Run(); err != nil {
-		return nil, fmt.Errorf("gif2webp failed: %w, stderr: %s", err, g2wStderr.String())
-	}
-
-	return os.ReadFile(webpPath)
+	return outBuf.Bytes(), nil
 }