<?php

// must be run within Dokuwiki
if (!defined('DOKU_INC')) die();

require_once __DIR__ . '/vendor/autoload.php';
use MatrixPhp\MatrixClient;

class helper_plugin_matrixnotifierwas extends DokuWiki_Plugin {
    
    var $_event = null;
    var $_event_type = array (
        "E" => "edit",
        "e" => "edit minor",
        "C" => "create",
        "D" => "delete",
        "R" => "revert"
    );
    var $_summary = null;
    var $_payload = null;
    
    public function setPayload($payload){
        $this->_payload = $payload;
    }
    
    public function attic_write ( $filename ) {
        if ( strpos ( $filename, 'data/attic' ) !== false ) {
            return true;
        }
        else {
            return false;
        }
    }
    
    public function valid_namespace ( ) {
        global $INFO;
        $validNamespaces = $this -> getConf ( 'namespaces' );
        if ( !empty ( $validNamespaces ) ) {
            $validNamespacesArr = explode ( ',', $validNamespaces );
            foreach ( $validNamespacesArr as $namespace ) {
                if ( strpos( $namespace, $INFO['namespace'] ) === 0 ) {
                    return true;
                }
            }
            return false;
        } else {
            return true;
        }
    }
    
    public function set_event ( $event ) {
        $this -> _opt = print_r ( $event, true );
        $changeType = $event -> data['changeType'];
        $event_type = $this -> _event_type[$changeType];
        $summary = $event -> data['summary'];
        if ( !empty ( $summary ) ) {
            $this -> _summary = $summary;
        }
        if ( $event_type == 'create' && $this -> getConf ( 'notify_create' ) == 1 ) {
            $this -> _event = 'create';
            return true;
        } elseif ( $event_type == 'edit' && $this -> getConf ( 'notify_edit' ) == 1 ) {
            $this -> _event = 'edit';
            return true;
        } elseif ( $event_type == 'edit minor' && ( $this -> getConf ( 'notify_edit' ) == 1 ) && ( $this -> getConf ( 'notify_edit_minor' ) == 1 ) ) {
            $this -> _event = 'edit minor';
            return true;
        } elseif ( $event_type == 'delete' && $this -> getConf ( 'notify_delete' ) == 1 ) {
            $this -> _event = 'delete';
            return true;
        } else {
            return false;
        }
    }
    
    public function set_payload_text ( $event ) {
        global $conf;
        global $lang;
        global $INFO;
        $event_name = '';
        $embed_color = hexdec ( "37474f" ); // default value
        switch ( $this -> _event ) {
            case 'create':
                $title = $this -> getLang ( 't_created' );
                $event_name = $this -> getLang ( 'e_created' );
                $embed_color = hexdec ( "00cc00" );
                break;
            case 'edit':
                $title = $this -> getLang ( 't_updated' );
                $event_name = $this -> getLang ( 'e_updated' );
                $embed_color = hexdec ( "00cccc" );
                break;
            case 'edit minor':
                $title = $this -> getLang ( 't_minor_upd' );
                $event_name = $this -> getLang ( 'e_minor_upd' );
                $embed_color = hexdec ( "00cccc" );
                break;
            case 'delete':
                $title = $this -> getLang ( 't_removed' );
                $event_name = $this -> getLang ( 'e_removed' );
                $embed_color = hexdec ( "cc0000" );
                break;
        }
        
	if ( $this -> getConf ( 'notify_show_name' ) === 'real name' ) {
		$user = $INFO['userinfo']['name'];
	} elseif ( $this -> getConf ( 'notify_show_name' ) === 'username' ) {
		$user = $_SERVER['REMOTE_USER'];
	} else {
		throw new Exception('invalid notify_show_name value');
	}
        $link = $this -> _get_url ( $event, null );
        $page = $event -> data['id'];
        //$description = "{$user} {$event_name} [__{$page}__]({$link})";
        $description = $user.' <b>'.$event_name.'</b> <a href="'.$page.'">'.$link.'</a><br/>';
        
        if ( $this -> _event != 'delete' ) {
            $oldRev = $INFO['meta']['last_change']['date'];
            if ( !empty ( $oldRev ) ) {
                $diffURL = $this -> _get_url ( $event, $oldRev );
                //$description .= " \([" . $this -> getLang ( 'compare' ) . "]({$diffURL})\)";
                $description .= '<a href="'.$diffURL.'">'.$this -> getLang ( 'compare' ).'</a><br/>';
            }
        }
        
        $summary = $this -> _summary;
        if ( ( strpos ( $this -> _event, 'edit' ) !== false ) && $this -> getConf ( 'notify_show_summary' ) ) {
            if ( $summary ) {
                //$description .= "\n" . $lang['summary'] . ": " . $summary;
                $description .= $lang['summary'] . ": " . $summary;
            }
        }
        
        $footer = array ( "text" => "Dokuwiki MatrixNotifier v1.2.2" );
        $payload = array ( "embeds" =>
            array (
                ["title" => $title, "color" => $embed_color, "description" => $description, "footer" => $footer]
            ),
        );
        $this -> _payload = $payload;
    }
    
    private function _get_url ( $event = null, $Rev ) {
        global $ID;
        global $conf;
        $oldRev = $event -> data['oldRevision'];
		$page = $event -> data['id'];
		if ( ( $conf['userewrite'] == 1 || $conf['userewrite'] == 2 ) && $conf['useslash'] == true )
			$page = str_replace ( ":", "/", $page );
        switch ( $conf['userewrite'] ) {
            case 0:
                $url = DOKU_URL . "doku.php?id={$page}";
                break;
            case 1:
                $url = DOKU_URL . $page;
                break;
            case 2:
                $url = DOKU_URL . "doku.php/{$page}";
                break;
        }
        if ( $Rev != null  ) {
            switch ( $conf['userewrite'] ) {
                case 0:
                    $url .= "&do=diff&rev={$Rev}";
                    break;
                case 1:
                case 2:
                    $url .= "?do=diff&rev={$Rev}";
                    break;
            }
        }
        return $url;
    }
    
    public function submit_payload ( ) {
        global $conf;

        $client = new MatrixClient( $this -> getConf ( 'server' ) );
        $token = $client->login($this -> getConf ( 'username' ), $this -> getConf ( 'password' ) );
        $room = $client -> joinRoom( $this -> getConf ( 'room' ) );
        $response = $room->sendHtml('<b>'.$this -> _payload['embeds'][0]['title'].'</b><hr/>'.$this -> _payload['embeds'][0]['description'] );
    }
    
}