/mod/file/start.php

<?php

/**
 * Elgg file browser
 * 
 * @package ElggFile
 */

/**
 * Override the ElggFile so that 
 */
class FilePluginFile extends ElggFile {

    protected function initialise_attributes() {
        parent::initialise_attributes();

        $this->attributes['subtype'] = "file";
    }

    public function __construct($guid = null) {
        parent::__construct($guid);
    }

}

/**
 * File plugin initialisation functions.
 */
function file_init() {
    global $CONFIG;

    // Set up menu (tools dropdown or other uses as defined by theme)
    if (isloggedin()) {
        //add_menu(elgg_echo('file'), $CONFIG->wwwroot . "pg/file/owner/" . get_loggedin_user()->username);
    } else {
        //add_menu(elgg_echo('file'), $CONFIG->wwwroot . "pg/file/all/" );
    }

    // Extend CSS
    elgg_extend_view('css', 'file/css');

    // Extend hover-over and profile menu	
    //elgg_extend_view('profile/menu/links', 'file/menu');

    // Register a page handler, so we can have nice URLs
    register_page_handler('file', 'file_page_handler');

    // Add a new file widget
    add_widget_type('filerepo', elgg_echo("file"), elgg_echo("file:widget:description"));

    // Register a URL handler for files
    register_entity_url_handler('file_url', 'object', 'file');

    // Register granular notification for this object type
    if (is_callable('register_notification_object')) {
        register_notification_object('object', 'file', elgg_echo('file:newupload'));
    }

    // Listen to notification events and supply a more useful message
    register_plugin_hook('notify:entity:message', 'object', 'file_notify_message');

    // add the group files tool option     
    add_group_tool_option('file', elgg_echo('groups:enablefiles'), true);

    // extend group main page
    elgg_extend_view('groups/left_column', 'file/groupprofile_files');
    elgg_extend_view('teams/left_column', 'file/groupprofile_files');
    // STd file for openlab plugin 
    elgg_extend_view('openlabs/left_column', 'file/groupprofile_files');

    // Register entity type
    register_entity_type('object', 'file');
}

/**
 * Sets up submenus for the file system.  Triggered on pagesetup.
 *
 */
function file_submenus() {

    global $CONFIG;

    $page_owner = page_owner_entity();

    // Group submenu option	
    if ($page_owner instanceof ElggGroup && get_context() == "groups") {
        if ($page_owner->file_enable != "no") {
            add_submenu_item(sprintf(elgg_echo("file:group"), $page_owner->name), $CONFIG->wwwroot . "pg/file/owner/" . $page_owner->username);
        }
    }

    if ($page_owner instanceof ElggGroup && get_context() == "teams") {
        if ($page_owner->file_enable != "no") {
            add_submenu_item(sprintf(elgg_echo("file:team"), $page_owner->name), $CONFIG->wwwroot . "pg/teamsfile/owner/" . $page_owner->username);
        }
    }

    // STD add file menus 
    if ($page_owner instanceof ElggGroup && get_context() == "openlabs") {
        if ($page_owner->file_enable != "no") {
            add_submenu_item(sprintf(elgg_echo("file:openlabs"), $page_owner->name), $CONFIG->wwwroot . "pg/openlabfile/owner/" . $page_owner->username);
        }
    }

    // General submenu options

    //if ((get_context() == "file")  || (get_context() == 'openlab' ) || (get_context() =='teams' ) ) {
   if ((get_context() == "teams_file")  || (get_context() == 'openlabs_file' ) ) {
        /**
         * STD no more menus Your files + Your friends files 
        
        if ((page_owner() == $_SESSION['guid'] || !page_owner()) && isloggedin()) {
            add_submenu_item(sprintf(elgg_echo("file:yours"), $page_owner->name), $CONFIG->wwwroot . "pg/file/owner/" . $page_owner->username);
            add_submenu_item(sprintf(elgg_echo('file:yours:friends'), $page_owner->name), $CONFIG->wwwroot . "pg/file/friends/" . $page_owner->username);
        } else if (page_owner()) {
            add_submenu_item(sprintf(elgg_echo("file:user"), $page_owner->name), $CONFIG->wwwroot . "pg/file/owner/" . $page_owner->username);
            if ($page_owner instanceof ElggUser) // This one's for users, not groups
                add_submenu_item(sprintf(elgg_echo('file:friends'), $page_owner->name), $CONFIG->wwwroot . "pg/file/friends/" . $page_owner->username);
        } */
       /* add_submenu_item(elgg_echo('file:all'), $CONFIG->wwwroot . "pg/file/all/"); */ 
       if (can_write_to_container($_SESSION['guid'], page_owner()) && isloggedin())
            add_submenu_item(elgg_echo('file:upload'), $CONFIG->wwwroot . "pg/file/new/" . $page_owner->username);
    }
}

/**
 * File page handler
 *
 * @param array $page Array of page elements, forwarded by the page handling mechanism
 */
function file_page_handler($page) {

    global $CONFIG;

    // group usernames
    if (substr_count($page[0], 'group:')) {
        preg_match('/group\:([0-9]+)/i', $page[0], $matches);
        $guid = $matches[1];
        if ($entity = get_entity($guid)) {
            file_url_forwarder($page);
        }
    }

    // user usernames
    $user = get_user_by_username($page[0]);
    if ($user) {
        file_url_forwarder($page);
    }

    switch ($page[0]) {
        case "read":
            set_input('guid', $page[1]);
            require(dirname(dirname(dirname(__FILE__))) . "/entities/index.php");
            break;
        case "owner":
            set_input('username', $page[1]);
            require($CONFIG->pluginspath . "file/index.php");
            break;
        case "friends":
            set_input('username', $page[1]);
            require($CONFIG->pluginspath . "file/friends.php");
            break;
        case "all":
            require($CONFIG->pluginspath . "file/world.php");
            break;
        case "new":
            set_input('username', $page[1]);
            require($CONFIG->pluginspath . "file/upload.php");
            break;
        case "edit":
            set_input('file_guid', $page[1]);
            require($CONFIG->pluginspath . "file/edit.php");
            break;
        default:
            return false;
    }

    return true;
}

/**
 * Forward to the new style of URLs
 *
 * @param string $page
 */
function file_url_forwarder($page) {
    global $CONFIG;

    if (!isset($page[1])) {
        $page[1] = 'owner';
    }

    switch ($page[1]) {
        case "read":
            $url = "{$CONFIG->wwwroot}pg/file/read/{$page[2]}/{$page[3]}";
            break;
        case "owner":
            $url = "{$CONFIG->wwwroot}pg/file/owner/{$page[0]}/";
            break;
        case "friends":
            $url = "{$CONFIG->wwwroot}pg/file/friends/{$page[0]}/";
            break;
        case "new":
            $url = "{$CONFIG->wwwroot}pg/file/new/{$page[0]}/";
            break;
    }

    register_error(elgg_echo("changebookmark"));
    forward($url);
}

/**
 * Returns a more meaningful message
 *
 * @param unknown_type $hook
 * @param unknown_type $entity_type
 * @param unknown_type $returnvalue
 * @param unknown_type $params
 */
function file_notify_message($hook, $entity_type, $returnvalue, $params) {
    $entity = $params['entity'];
    $to_entity = $params['to_entity'];
    $method = $params['method'];
    if (($entity instanceof ElggEntity) && ($entity->getSubtype() == 'file')) {
        $descr = $entity->description;
        $title = $entity->title;
        global $CONFIG;
        $url = $CONFIG->wwwroot . "pg/view/" . $entity->guid;
        if ($method == 'sms') {
            $owner = $entity->getOwnerEntity();
            return $owner->name . ' ' . elgg_echo("file:via") . ': ' . $url . ' (' . $title . ')';
        }
        if ($method == 'email') {
            $owner = $entity->getOwnerEntity();
            return $owner->name . ' ' . elgg_echo("file:via") . ': ' . $entity->title . "\n\n" . $descr . "\n\n" . $entity->getURL();
        }
        if ($method == 'web') {
            $owner = $entity->getOwnerEntity();
            return $owner->name . ' ' . elgg_echo("file:via") . ': ' . $entity->title . "\n\n" . $descr . "\n\n" . $entity->getURL();
        }
    }
    return null;
}

/**
 * Returns an overall file type from the mimetype
 *
 * @param string $mimetype The MIME type
 * @return string The overall type
 */
function get_general_file_type($mimetype) {

    switch ($mimetype) {
        case "application/msword":
            return "document";
            break;
        case "application/pdf":
            return "document";
            break;
    }

    if (substr_count($mimetype, 'text/'))
        return "document";

    if (substr_count($mimetype, 'audio/'))
        return "audio";

    if (substr_count($mimetype, 'image/'))
        return "image";

    if (substr_count($mimetype, 'video/'))
        return "video";

    if (substr_count($mimetype, 'opendocument'))
        return "document";

    return "general";
}

/**
 * Returns a list of filetypes to search specifically on
 *
 * @param int|array $owner_guid The GUID(s) of the owner(s) of the files 
 * @param true|false $friends Whether we're looking at the owner or the owner's friends
 * @return string The typecloud
 */
function get_filetype_cloud($owner_guid = "", $friends = false) {

    if ($friends) {
        if ($friendslist = get_user_friends($user_guid, "", 999999, 0)) {
            $friendguids = array();
            foreach ($friendslist as $friend) {
                $friendguids[] = $friend->getGUID();
            }
        }
        $friendofguid = $owner_guid;
        $owner_guid = $friendguids;
    } else {
        $friendofguid = false;
    }

    elgg_register_tag_metadata_name('simpletype');
    $types = get_tags(0, 10, 'simpletype', 'object', 'file', $owner_guid);

    return elgg_view('file/typecloud', array('owner_guid' => $owner_guid, 'friend_guid' => $friendofguid, 'types' => $types));
}

/**
 * Populates the ->getUrl() method for file objects
 *
 * @param ElggEntity $entity File entity
 * @return string File URL
 */
function file_url($entity) {

    global $CONFIG;
    $title = $entity->title;
    $title = elgg_get_friendly_title($title);
    return $CONFIG->url . "pg/file/read/" . $entity->getGUID() . "/" . $title;
}

// Make sure test_init is called on initialisation
register_elgg_event_handler('init', 'system', 'file_init');
register_elgg_event_handler('pagesetup', 'system', 'file_submenus');

// Register actions
register_action("file/upload", false, $CONFIG->pluginspath . "file/actions/upload.php");
register_action("file/save", false, $CONFIG->pluginspath . "file/actions/save.php");
register_action("file/delete", false, $CONFIG->pluginspath . "file/actions/delete.php");

// temporary - see #2010
register_action("file/download", false, $CONFIG->pluginspath . "file/actions/download.php");

?>