feat: integrate govips for image processing and enhance image conversion to WebP

Dockerfile

@@ -1,8 +1,8 @@
 # Stage: build
 FROM golang:1.25.5-alpine AS build
 
-# Install build dependencies (CGO often needed for go-sqlite3)
+# Install build dependencies (CGO for go-sqlite3 + govips)
-RUN apk add --no-cache gcc musl-dev
+RUN apk add --no-cache gcc musl-dev vips-dev
 
 WORKDIR /app
 
@@ -17,11 +17,10 @@ RUN CGO_ENABLED=1 GOOS=linux go build -trimpath -ldflags="-w -s" -o /app/neo .
 # Stage: prod
 FROM alpine:latest AS prod
 
-# Install required tools (cwebp/gif2webp via libwebp-tools, ffmpeg, imagemagick)
+# Install runtime dependencies (vips for image processing, ffmpeg for video)
 RUN apk add --no-cache \
     ffmpeg \
-    libwebp-tools \
+    vips \
-    imagemagick \
     ca-certificates \
     tzdata
 

go.mod

@@ -15,6 +15,7 @@ require (
 	filippo.io/edwards25519 v1.2.0 // indirect
 	github.com/beeper/argo-go v1.1.2 // indirect
 	github.com/coder/websocket v1.8.15 // indirect
+	github.com/davidbyttow/govips/v2 v2.18.0 // indirect
 	github.com/elliotchance/orderedmap/v3 v3.1.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
@@ -24,12 +25,13 @@ require (
 	github.com/vektah/gqlparser/v2 v2.5.27 // indirect
 	go.mau.fi/libsignal v0.2.2 // indirect
 	go.mau.fi/util v0.9.10 // indirect
-	golang.org/x/crypto v0.53.0 // indirect
+	golang.org/x/crypto v0.54.0 // indirect
 	golang.org/x/exp v0.0.0-20260611194520-c48552f49976 // indirect
-	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/image v0.44.0 // indirect
-	golang.org/x/sync v0.21.0 // indirect
+	golang.org/x/net v0.57.0 // indirect
-	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/sync v0.22.0 // indirect
-	golang.org/x/term v0.44.0 // indirect
+	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/text v0.38.0 // indirect
+	golang.org/x/term v0.45.0 // indirect
+	golang.org/x/text v0.40.0 // indirect
 	rsc.io/qr v0.2.0 // indirect
 )

go.sum

@@ -12,6 +12,8 @@ github.com/coder/websocket v1.8.15 h1:6B2JPeOGlpff2Uz6vOEH1Vzpi0iUz20A+lPVhPHtNU
 github.com/coder/websocket v1.8.15/go.mod h1:NX3SzP+inril6yawo5CQXx8+fk145lPDC6pumgx0mVg=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davidbyttow/govips/v2 v2.18.0 h1:pZRshWVYvewP/TZx3yZ7YeC42WyLXg53tHy5Qt8nT9E=
+github.com/davidbyttow/govips/v2 v2.18.0/go.mod h1:8+nst5zfMoats12PgmmAPh6p5OfjDaXK0BXMFl/vOcM=
 github.com/elliotchance/orderedmap/v3 v3.1.0 h1:j4DJ5ObEmMBt/lcwIecKcoRxIQUEnw0L804lXYDt/pg=
 github.com/elliotchance/orderedmap/v3 v3.1.0/go.mod h1:G+Hc2RwaZvJMcS4JpGCOyViCnGeKf0bTYCGTO4uhjSo=
 github.com/gabriel-vasile/mimetype v1.4.13 h1:46nXokslUBsAJE/wMsp5gtO500a4F3Nkz9Ufpk2AcUM=
@@ -50,19 +52,33 @@ go.mau.fi/whatsmeow v0.0.0-20260630180629-b572e5bcb92b h1:ZUk1ErarDNpnbosXR/MeOz
 go.mau.fi/whatsmeow v0.0.0-20260630180629-b572e5bcb92b/go.mod h1:9dmNTYZ/1pHjPw/bz+azBsGjAkcrZbqzMrKcvG5bJ8U=
 golang.org/x/crypto v0.53.0 h1:QZ4Muo8THX6CizN2vPPd5fBGHyogrdK9fG4wLPFUsto=
 golang.org/x/crypto v0.53.0/go.mod h1:DNLU434OwVakk9PzuwV8w62mAJpRJL3vsgcfp4Qnsio=
+golang.org/x/crypto v0.54.0 h1:YLIA59K4fiNzHzjnZt2tUJQjQtUWfWbeHBqKtk3eScw=
+golang.org/x/crypto v0.54.0/go.mod h1:KWL8ny2AZdGR2cWmzeHrp2azQPGogOv+HeQaVEXC2dk=
 golang.org/x/exp v0.0.0-20260611194520-c48552f49976 h1:X8Hz2ImujgbmetVuW+w2YkyZChE3cBpZi2P158rTG9M=
 golang.org/x/exp v0.0.0-20260611194520-c48552f49976/go.mod h1:vnf4pv9iKZXY58sQE1L86zmNWJ4159e1RkcWiLCkeEY=
+golang.org/x/image v0.44.0 h1:+tDekMZED9+LrtB3G5xzRggpVh9CARjZqROla3R3R+I=
+golang.org/x/image v0.44.0/go.mod h1:V8K3KE9KKKE+pLpQDOeN18w9oacNSvy1tDOirTu4xtY=
 golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
 golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
+golang.org/x/net v0.57.0 h1:K5+3DljvIuDG9/Jv9rvyMywYNFCQ9RSUY6OOTTkT+tE=
+golang.org/x/net v0.57.0/go.mod h1:KpXc8iv+r3XplLAG/f7Jsf9RPszJzdR0f58q9vGOuEU=
 golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
 golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sync v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek=
+golang.org/x/sync v0.22.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
 golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
+golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/term v0.44.0 h1:0rLvDRCtNj0gZkyIXhCyOb2OAzEhLVqc4B+hrsBhrmc=
 golang.org/x/term v0.44.0/go.mod h1:7ze4MdzUzLXpSAoFP1H0bOI9aXDqveSvatT5vKcFh2Y=
+golang.org/x/term v0.45.0 h1:NwWyBmoJCbfTHpxrWoZ9C6/VxOf7ic219I8xZZFdrf0=
+golang.org/x/term v0.45.0/go.mod h1:9aqxs0blBcrm/n0L9QW0aRVD+ktan8ssZromtqJC43w=
 golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=
 golang.org/x/text v0.38.0/go.mod h1:YXZt3QhHUKYT53r2lLKFIVi6Ao1jdzrTR/KQ09qyxF4=
+golang.org/x/text v0.40.0 h1:Ub2Z6/xjgF1WrYQz2nuITOEegKFtiIy+rieRJ5lHZKs=
+golang.org/x/text v0.40.0/go.mod h1:hpnzDAfGV753zIKo+wk3u1bVKCGPbrnF7+7LBF/UHVY=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
 google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

helper/media_convert.go

@@ -4,30 +4,47 @@ import (
 	"bytes"
 	"fmt"
 	"os/exec"
+
+	"github.com/davidbyttow/govips/v2/vips"
 )
 
 func ConvertImageToWebp(imgData []byte) ([]byte, error) {
-	convertCmd := exec.Command("convert", "-", "-resize", "512x512", "-background", "none", "-compose", "Copy", "-gravity", "center", "-extent", "512x512", "-quality", "100", "png:-")
+	img, err := vips.NewImageFromBuffer(imgData)
-	convertCmd.Stdin = bytes.NewReader(imgData)
+	if err != nil {
-	var convertBuf bytes.Buffer
+		return nil, fmt.Errorf("failed to load image: %w", err)
-	var stderr bytes.Buffer
+	}
-	convertCmd.Stdout = &convertBuf
+	defer img.Close()
-	convertCmd.Stderr = &stderr
+
-	if err := convertCmd.Run(); err != nil {
+	if !img.HasAlpha() {
-		return nil, fmt.Errorf("convert failed: %w, stderr: %s", err, stderr.String())
+		if err := img.AddAlpha(); err != nil {
+			return nil, fmt.Errorf("failed to add alpha: %w", err)
+		}
 	}
 
-	cwebpCmd := exec.Command("cwebp", "-quiet", "-mt", "-exact", "-q", "100", "-m", "6", "-alpha_q", "100", "-o", "-", "--", "-")
+	if err := img.ThumbnailWithSize(512, 512, vips.InterestingNone, vips.SizeBoth); err != nil {
-	cwebpCmd.Stdin = &convertBuf
+		return nil, fmt.Errorf("failed to resize: %w", err)
-	var cwebpBuf bytes.Buffer
-	var cwebStderr bytes.Buffer
-	cwebpCmd.Stdout = &cwebpBuf
-	cwebpCmd.Stderr = &cwebStderr
-	if err := cwebpCmd.Run(); err != nil {
-		return nil, fmt.Errorf("cwebp failed: %w, stderr: %s", err, cwebStderr.String())
 	}
 
-	return cwebpBuf.Bytes(), nil
+	// Center in 512x512 canvas with transparent background (fit: contain)
+	w, h := img.Width(), img.Height()
+	if w != 512 || h != 512 {
+		left := (512 - w) / 2
+		top := (512 - h) / 2
+		if err := img.EmbedBackgroundRGBA(left, top, 512, 512, &vips.ColorRGBA{R: 0, G: 0, B: 0, A: 0}); err != nil {
+			return nil, fmt.Errorf("failed to embed: %w", err)
+		}
+	}
+
+	webpBuf, _, err := img.ExportWebp(&vips.WebpExportParams{
+		Quality:         100,
+		Lossless:        false,
+		ReductionEffort: 6,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("failed to export webp: %w", err)
+	}
+
+	return webpBuf, nil
 }
 
 func ConvertVideoToWebp(vidData []byte) ([]byte, error) {

main.go

@@ -10,6 +10,7 @@ import (
 	_ "neo/cmds"
 	"neo/core"
 
+	"github.com/davidbyttow/govips/v2/vips"
 	"github.com/joho/godotenv"
 	_ "github.com/mattn/go-sqlite3"
 	"github.com/mdp/qrterminal/v3"
@@ -33,6 +34,9 @@ func init() {
 }
 
 func main() {
+	vips.Startup(nil)
+	defer vips.Shutdown()
+
 	dbLog := waLog.Stdout("Database", "DEBUG", true)
 	ctx := context.Background()
 	container, err := sqlstore.New(ctx, "sqlite3", fmt.Sprintf("file:%s?_foreign_keys=on", os.Getenv("SESSION_PATH")), dbLog)