Gambling/GamblingPlugin.php

<?php

if (!defined('GNUSOCIAL')) {
    exit(1);
}

class GamblingPlugin extends Plugin
{
    const VERSION = '0.0.1';

    const ROLL_RE = '/\/roll\+(?<rolls>\d+)d(?<faces>\d+)/';

    public $roll_str = null;
    public $render_html = false;


    static function settings($setting)
    {
        $settings['style'] = "span.dicerolls { font-weight: bold; border: 1px solid black; }";
        $settings['max_rolls'] = 10;
        $settings['max_faces'] = 100;

        $configphpsettings = common_config('site','gambling') ?: array();
        foreach($configphpsettings as $configphpsetting=>$value) {
            $settings[$configphpsetting] = $value;
        }

        if(isset($settings[$setting])) {
            return $settings[$setting];
        }
        else {
            return false;
        }
    }

    public function onEndShowStyles(Action $action)
    {
        $action->style(self::settings('style'));
    }

    public function onQvitterEndShowHeadElements(Action $action)
    {
    	$this->onEndShowStyles($action);
    }

    function onStartNoticeSave(&$notice)
    {
        if (! $notice->is_local) return;

        $obj = $this;

        $render_dice = function($matches) use (&$obj) {
            if (is_null($obj->roll_str)) {
                $rolls = intval($matches[1]);
                $faces = intval($matches[2]);

                $bad_rolls = $rolls < 1 or $rolls > $obj->settings('max_rolls');
                $bad_faces = $faces < 2 or $faces > $obj->settings('max_faces');

                if ( $bad_rolls or $bad_faces ) {
                    $obj->roll_str = "Rolled: bad roll";
                }
                else {
                    $total = 0;
                    $rolled_str = "Rolled: ";

                    for ($i = 1; $i <= $rolls; $i++)
                    {
                        $roll = random_int(1,$faces);
                        $total = $total + $roll;
                        $rolled_str .= $roll . ($i==$rolls ? ' ' : ', ');
                    }
                    $rolled_str = $rolled_str . ' = ' . $total . ' (' . $rolls . 'd' . $faces . ')';
                    
                    $obj->roll_str = $rolled_str;
                }
            }

            if ($obj->render_html) {
                return '<span class="dicerolls">' . $obj->roll_str . '</span>';
            }
            else {
                return $obj->roll_str;
            }
            
        };

        $notice->content = preg_replace_callback(self::ROLL_RE, $render_dice, $notice->content, 1);

        $this->render_html = true;
        $notice->rendered = preg_replace_callback(self::ROLL_RE, $render_dice, $notice->rendered, 1);

    }

    function onPluginVersion(array &$versions)
    {
        $versions[] = array('name' => 'Gambling',
                            'version' => self::VERSION,
                            'author' => 'MoonMan',
                            'homepage' => 'https://gitgud.io/ShitposterClub/Gambling/',
                            'description' =>
                            _m('Dice rolling and maybe other things'));
        return true;
    }
}