<?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 '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 trim(exec("xdotool getwindowname {$this->windowId}"));
    }

    public function setWindowTitle($title)
    {
        exec("xdotool set_window --name ".escapeshellarg($title)." {$this->windowId}");
    }

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

    /**
     *
     *
     * @param bool $alternative If true, xwininfo will be used instead of xdotool
     */
    public function getWindowGeometry($alternative=false)
    {
        if ($alternative==true) {
            exec("LANG=C xwininfo -id {$this->windowId} -int", $output, $status);
            foreach ($output as $line) {
                if (preg_match('/Window id:\s+([0-9]+)/', $line, $m)) {
                    $win_id = $m[1];
                } elseif (preg_match('/Absolute upper-left ([XY]):\s+([0-9]+)/', $line, $m)) {
                    if ($m[1] == 'X') {
                        $win_x = $m[2];
                    } else {
                        $win_y = $m[2];
                    }
                } elseif (preg_match('/Width:\s+([0-9]+)/', $line, $m)) {
                    $win_width = $m[1];
                } elseif (preg_match('/Height:\s+([0-9]+)/', $line, $m)) {
                    $win_height = $m[1];
                }
            }
            // return WINDOW, X, Y, WIDTH, HEIGHT, SCREEN
            $ret = [
                'window' => $win_id,
                'x' => $win_x,
                'y' => $win_y,
                'width' => $win_width,
                'height' => $win_height,
                'screen' => 0 // don't seem to get this from xwininfo
            ];
        } else {
            exec("xdotool getwindowgeometry --shell {$this->windowId}", $output, $status);
            $ret = [];
            foreach ($output as $line) {
                list($k,$v) = explode("=",$line,2);
                $ret[strtolower($k)]=$v;
            }
        }
        return (object)$ret;
    }

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

    public function windowMinimize()
    {
        exec("xdotool windowminimize {$this->windowId}");
        return $this;
    }

    public function windowRestore()
    {
        exec("xdotool windowmap {$this->windowId} windowraise {$this->windowId}");
        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
        );
    }
}