new injection strategies

internal/injection/clipboard.go

@@ -9,43 +9,21 @@ import (
 	"time"
 )
 
-func getClipboard(ctx context.Context, timeout time.Duration) (string, error) {
-	ctx, cancel := context.WithTimeout(ctx, timeout)
-	defer cancel()
+type clipboardBackend struct{}
 
-	cmd := exec.CommandContext(ctx, "wl-paste", "--no-newline")
-	output, err := cmd.Output()
-	if err != nil {
-		return "", nil
-	}
-
-	return string(output), nil
+func NewClipboardBackend() Backend {
+	return &clipboardBackend{}
 }
 
-func setClipboard(ctx context.Context, text string, timeout time.Duration) error {
-	ctx, cancel := context.WithTimeout(ctx, timeout)
-	defer cancel()
-
-	cmd := exec.CommandContext(ctx, "wl-copy")
-	cmd.Stdin = strings.NewReader(text)
-
-	if err := cmd.Run(); err != nil {
-		return fmt.Errorf("wl-copy failed: %w", err)
-	}
-
-	return nil
+func (c *clipboardBackend) Name() string {
+	return "clipboard"
 }
 
-func checkClipboardAvailable() error {
+func (c *clipboardBackend) Available() error {
 	if _, err := exec.LookPath("wl-copy"); err != nil {
 		return fmt.Errorf("wl-copy not found: %w (install wl-clipboard)", err)
 	}
 
-	if _, err := exec.LookPath("wl-paste"); err != nil {
-		return fmt.Errorf("wl-paste not found: %w (install wl-clipboard)", err)
-	}
-
-	// Check for Wayland environment
 	if os.Getenv("WAYLAND_DISPLAY") == "" {
 		return fmt.Errorf("WAYLAND_DISPLAY not set - clipboard operations require Wayland session")
 	}
@@ -56,3 +34,21 @@ func checkClipboardAvailable() error {
 
 	return nil
 }
+
+func (c *clipboardBackend) Inject(ctx context.Context, text string, timeout time.Duration) error {
+	ctx, cancel := context.WithTimeout(ctx, timeout)
+	defer cancel()
+
+	if err := c.Available(); err != nil {
+		return err
+	}
+
+	cmd := exec.CommandContext(ctx, "wl-copy")
+	cmd.Stdin = strings.NewReader(text)
+
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("wl-copy failed: %w", err)
+	}
+
+	return nil
+}