package hypr

import (
	"encoding/json"
	"os/exec"

	"git.milar.in/milarin/slices"
)

func GetWindows() ([]*Window, error) {
	cmd := exec.Command("hyprctl", "-j", "clients")

	stdout, err := cmd.StdoutPipe()
	if err != nil {
		return nil, err
	}

	if err := cmd.Start(); err != nil {
		return nil, err
	}

	windows := make([]*Window, 0, 5)
	if err := json.NewDecoder(stdout).Decode(&windows); err != nil {
		return nil, err
	}

	if err := cmd.Wait(); err != nil {
		return nil, err
	}

	windows = slices.Filter(windows, func(w *Window) bool {
		return w.PID != -1
	})

	return windows, nil
}