Add injection backends

internal/inject/xdotool.go

@@ -0,0 +1,63 @@
+package inject
+
+import (
+	"context"
+	"errors"
+	"os/exec"
+	"strings"
+)
+
+type Runner func(ctx context.Context, name string, args ...string) ([]byte, error)
+
+func DefaultRunner(ctx context.Context, name string, args ...string) ([]byte, error) {
+	cmd := exec.CommandContext(ctx, name, args...)
+	return cmd.CombinedOutput()
+}
+
+type XdotoolPaster struct {
+	Run Runner
+}
+
+func NewXdotoolPaster(run Runner) XdotoolPaster {
+	if run == nil {
+		run = DefaultRunner
+	}
+	return XdotoolPaster{Run: run}
+}
+
+func (p XdotoolPaster) Paste(ctx context.Context) error {
+	out, err := p.Run(ctx, "xdotool", "key", "--clearmodifiers", "ctrl+v")
+	if err != nil {
+		return formatRunError(out, err)
+	}
+	return nil
+}
+
+type XdotoolTyper struct {
+	Run Runner
+}
+
+func NewXdotoolTyper(run Runner) XdotoolTyper {
+	if run == nil {
+		run = DefaultRunner
+	}
+	return XdotoolTyper{Run: run}
+}
+
+func (t XdotoolTyper) TypeText(ctx context.Context, text string) error {
+	if strings.TrimSpace(text) == "" {
+		return errors.New("empty transcript")
+	}
+	out, err := t.Run(ctx, "xdotool", "type", "--clearmodifiers", "--delay", "1", text)
+	if err != nil {
+		return formatRunError(out, err)
+	}
+	return nil
+}
+
+func formatRunError(out []byte, err error) error {
+	if len(out) > 0 {
+		return errors.New(strings.TrimSpace(string(out)))
+	}
+	return err
+}