fix compile error for other os than windows

converter/converter.go

@@ -26,6 +26,11 @@ type Converter struct {
 // NewConverter starts a new converter instance with a chrome headless shell executable
 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 {
@@ -79,7 +84,6 @@ func (c *Converter) Convert(files ...models.File) error {
 		htmlURL.WriteString(filepath.ToSlash(absPath))
 
 		c.ctx, c.cancel = context.WithTimeout(c.ctx, 60*time.Second)
-		defer c.cancel()
 
 		var pdfData []byte
 		err = chromedp.Run(c.ctx,
@@ -98,15 +102,19 @@ func (c *Converter) Convert(files ...models.File) error {
 				return nil
 			}),
 		)
+
 		if err != nil {
+			c.cancel()
 			return err
 		}
 
 		// Save PDF to file
 		if err := os.WriteFile(f.Output, pdfData, 0644); err != nil {
+			c.cancel()
 			return err
 		}
 	}
+	c.cancel()
 	return nil
 }
 

converter/hideOthers.go

@@ -0,0 +1,9 @@
+//go:build !windows
+
+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.
+}

converter/hideWindows.go

@@ -0,0 +1,23 @@
+//go:build windows
+
+package converter
+
+import (
+	"syscall"
+)
+
+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)
+	}
+}