new injection strategies

internal/injection/wtype.go

@@ -0,0 +1,51 @@
+package injection
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"time"
+)
+
+type wtypeBackend struct{}
+
+func NewWtypeBackend() Backend {
+	return &wtypeBackend{}
+}
+
+func (w *wtypeBackend) Name() string {
+	return "wtype"
+}
+
+func (w *wtypeBackend) Available() error {
+	if _, err := exec.LookPath("wtype"); err != nil {
+		return fmt.Errorf("wtype not found: %w (install wtype package)", err)
+	}
+
+	if os.Getenv("WAYLAND_DISPLAY") == "" {
+		return fmt.Errorf("WAYLAND_DISPLAY not set - wtype requires Wayland session")
+	}
+
+	if os.Getenv("XDG_RUNTIME_DIR") == "" {
+		return fmt.Errorf("XDG_RUNTIME_DIR not set - wtype requires proper session environment")
+	}
+
+	return nil
+}
+
+func (w *wtypeBackend) Inject(ctx context.Context, text string, timeout time.Duration) error {
+	ctx, cancel := context.WithTimeout(ctx, timeout)
+	defer cancel()
+
+	if err := w.Available(); err != nil {
+		return err
+	}
+
+	cmd := exec.CommandContext(ctx, "wtype", "--", text)
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("wtype failed: %w", err)
+	}
+
+	return nil
+}