<?php

namespace NoccyLabs\X11;


class Window 
{

    protected $windowId;

    protected $windowTitle;

    protected $isVisible;

    public function __construct($id=null)
    {
        if (!$id) { $id = (int)exec("xdotool getactivewindow"); }
        $this->windowId = $id;
        $this->readWindowInfo();
    }

    private function readWindowInfo()
    {
        exec("xwininfo -id {$this->windowId} -all -children", $output, $status);
        foreach ($output as $line) {
            if (preg_match('/^(.+?): (.+?)$/', trim($line), $match)) {
                switch ($match[1]) {
                    case 'xwininfo':
                        if (preg_match('/Window id: .+? "(.+?)"/', $match[2], $m)) {
                            $this->windowTitle = $m[1];
                        }
                        break;
                    case 'Map State':
                        $this->isVisible = ($match[2]=='IsViewable');
                        break;
                    default:
                        //printf("[%s]->'%s'\n", $match[1], $match[2]);
                }
            }
        }
        //printf("---\n");
    }

    public function getId()
    {
        return hexdec($this->windowId);
    }

    public function isVisible()
    {
        return $this->isVisible;
    }

    public function getWindowTitle()
    {
        return $this->windowTitle;
    }

    public function sendKeys($keys, $forceFocus=false)
    {
        if ($forceFocus) {
            $this->focus();
            $cmdl = sprintf("xdotool key %s", $keys);
        } else {
            $cmdl = sprintf("xdotool key --delay 100 --window %d %s", $this->windowId, $keys);
        }
        echo "$ {$cmdl}\n";
        exec($cmdl);
        return $this;
    }

    public function focus()
    {
        $cmdl = sprintf("xdotool windowfocus %d", $this->windowId);
        echo "$ {$cmdl}\n";
        exec($cmdl);
        return $this;
    }

    public function activate()
    {
        $cmdl = sprintf("xdotool windowactivate %d", $this->windowId);
        echo "$ {$cmdl}\n";
        exec($cmdl);
        return $this;
    }

    public function getWindowSize()
    {
        exec("xdotool getwindowgeometry {$this->windowId}", $output, $status);
        $str = join("\n",$output);

        if (preg_match('/Geometry: ([0-9]+?)x([0-9]+?)$/i', $str, $match)) {
            return (object)[
                'width' => intval($match[1]),
                'height' => intval($match[2])
            ];
        }
        return false;
    }

    public function setWindowSize($width, $height)
    {
        exec("xdotool windowsize {$this->windowId} {$width} {$height}");
        return $this;
    }

    public function dump()
    {
        $size = $this->getWindowSize();
        printf("Window: (id=0x%08x)\n  Title: %s\n  Visible: %s\n  Size: %dx%d\n",
            $this->windowId,
            $this->windowTitle,
            $this->isVisible?'true':'false',
            $size->width, $size->height
        );
    }
}