fix canelation

converter/converter.go

@@ -20,6 +20,7 @@ type Converter struct {
 	chromePath  string
 	ctx         context.Context
 	cancel      context.CancelFunc
+	allocCancel context.CancelFunc
 	progress    func(progress int)
 }
 
@@ -27,10 +28,6 @@ type Converter struct {
 func NewConverter(chromePath string) (*Converter, error) {
 	var err error
 
-	if runtime.GOOS == "windows" {
-		hideConsole()
-	}
-
 	c := &Converter{chromePath: chromePath}
 	chromePath, err = c.getChromePath()
 	if err != nil {
@@ -44,9 +41,11 @@ func NewConverter(chromePath string) (*Converter, error) {
 		chromedp.DisableGPU,
 	)
 
+	opts = append(opts, platformOptions())
+
 	var allocCtx context.Context
 	allocCtx, c.cancel = chromedp.NewExecAllocator(context.Background(), opts...)
-	c.ctx, c.cancel = chromedp.NewContext(allocCtx)
+	c.ctx, c.allocCancel = chromedp.NewContext(allocCtx)
 	return c, nil
 }
 
@@ -83,10 +82,11 @@ func (c *Converter) Convert(files ...models.File) error {
 
 		htmlURL.WriteString(filepath.ToSlash(absPath))
 
-		c.ctx, c.cancel = context.WithTimeout(c.ctx, 60*time.Second)
+		ctx, cancel := context.WithTimeout(c.ctx, 60*time.Second)
+		defer cancel()
 
 		var pdfData []byte
-		err = chromedp.Run(c.ctx,
+		err = chromedp.Run(ctx,
 			chromedp.Navigate(htmlURL.String()),
 			chromedp.WaitReady("body", chromedp.ByQuery),
 			chromedp.ActionFunc(func(ctx context.Context) error {
@@ -118,6 +118,12 @@ func (c *Converter) Convert(files ...models.File) error {
 	return nil
 }
 
+func (c *Converter) Close() {
+	if c.cancel != nil {
+		c.cancel()
+	}
+}
+
 // getChromePath checks for system Chrome, else falls back to bundled headless shell
 func (c *Converter) getChromePath() (string, error) {
 

converter/hideOthers.go

@@ -2,8 +2,9 @@
 
 package converter
 
-// hideConsole does nothing on non-Windows systems
-func hideConsole() {
-	// macOS and Linux don't have the same "console window" concept
-	// that needs manual hiding at runtime like Windows.
+import "github.com/chromedp/chromedp"
+
+func platformOptions() chromedp.ExecAllocatorOption {
+	// Returns a no-op option for Mac/Linux
+	return chromedp.NoSandbox
 }

converter/hideWindows.go

@@ -3,21 +3,18 @@
 package converter
 
 import (
+	"os/exec"
 	"syscall"
+
+	"github.com/chromedp/chromedp"
 )
 
-var (
-	kernel32         = syscall.NewLazyDLL("kernel32.dll")
-	user32           = syscall.NewLazyDLL("user32.dll")
-	getConsoleWindow = kernel32.NewProc("GetConsoleWindow")
-	showWindow       = user32.NewProc("ShowWindow")
-)
-
-const SW_HIDE = 0
-
-func hideConsole() {
-	hwnd, _, _ := getConsoleWindow.Call()
-	if hwnd != 0 {
-		showWindow.Call(hwnd, SW_HIDE)
+func platformOptions() chromedp.ExecAllocatorOption {
+	return chromedp.ModifyCmdFunc(func(cmd *exec.Cmd) {
+		if cmd.SysProcAttr == nil {
+			cmd.SysProcAttr = &syscall.SysProcAttr{}
 		}
+		cmd.SysProcAttr.HideWindow = true
+		cmd.SysProcAttr.CreationFlags = 0x08000000 // CREATE_NO_WINDOW
+	})
 }

html2pdf_test.go

@@ -42,7 +42,7 @@ func TestConvertFiles(t *testing.T) {
 		})
 	}
 
-	c, err := converter.NewConverter("./assets")
+	c, err := converter.NewConverter("assets/chrome-headless-shell/win64")
 	if err != nil {
 		t.Fatal(err)
 	}