<?php
/**
 * Elgg profile plugin
 *
 * @package ElggProfile
 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
 * @author Curverider Ltd <info@elgg.com>
 * @copyright Curverider Ltd 2008-2010
 * @link http://elgg.com/
 */

/**
 * Profile init function; sets up the profile functions
 *
 */
function profile_init() {
	global $CONFIG;

	require_once 'profile_lib.php';

	// Register a URL handler for users - this means that profile_url()
	// will dictate the URL for all ElggUser objects
	register_entity_url_handler('profile_url', 'user', 'all');

	// Set up the menu for logged-in users
	if (isloggedin()) {
		add_menu(elgg_echo('profile:yours'), $_SESSION['user']->getURL() . '/extend');
	}

	// Metadata on users needs to be independent
	register_metadata_as_independent('user');

	elgg_view_register_simplecache('icon/user/default/tiny');
	elgg_view_register_simplecache('icon/user/default/topbar');
	elgg_view_register_simplecache('icon/user/default/small');
	elgg_view_register_simplecache('icon/user/default/medium');
	elgg_view_register_simplecache('icon/user/default/large');
	elgg_view_register_simplecache('icon/user/default/master');

	// Register a page handler, so we can have nice URLs
	register_page_handler('profile', 'profile_page_handler');
	register_page_handler('defaultprofile', 'profileedit_page_handler');
	register_page_handler('icon', 'profile_icon_handler');
	register_page_handler('iconjs', 'profile_iconjs_handler');

	// Add Javascript reference to the page header
	elgg_extend_view('metatags', 'profile/metatags');
	elgg_extend_view('css', 'profile/css');
	elgg_extend_view('js/initialise_elgg', 'profile/javascript');

	if (get_context() == 'profile') {
		elgg_extend_view('canvas_header/submenu', 'profile/submenu');
	}

	// Extend context menu with admin links
	if (isadminloggedin()){
		elgg_extend_view('profile/menu/links', 'profile/menu/adminwrapper', 10000);
	}

	// Now override icons
	register_plugin_hook('entity:icon:url', 'user', 'profile_usericon_hook');

}

/**
 * This function loads a set of default fields into the profile, then triggers a hook letting other plugins to edit
 * add and delete fields.
 *
 * Note: This is a secondary system:init call and is run at a super low priority to guarantee that it is called after all
 * other plugins have initialised.
 */
function profile_fields_setup() {
	global $CONFIG;

	$profile_defaults = array (
		'description' => 'longtext',
		'briefdescription' => 'text',
		'location' => 'tags',
		'interests' => 'tags',
		'skills' => 'tags',
		'contactemail' => 'email',
		'phone' => 'text',
		'mobile' => 'text',
		'website' => 'url',
		'twitter' => 'text'
	);

	// TODO: Have an admin interface for this
	$n = 0;
	$loaded_defaults = array();
	while ($translation = get_plugin_setting("admin_defined_profile_$n", 'profile')){
		// Add a translation
		add_translation(get_current_language(), array("profile:admin_defined_profile_$n" => $translation));

		// Detect type
		$type = get_plugin_setting("admin_defined_profile_type_$n", 'profile');
		if (!$type) $type = 'text';

		// Set array
		$loaded_defaults["admin_defined_profile_$n"] = $type;

		$n++;
	}
	if (count($loaded_defaults)) {
		$CONFIG->profile_using_custom = true;
		$profile_defaults = $loaded_defaults;
	}

	$CONFIG->profile = trigger_plugin_hook('profile:fields', 'profile', NULL, $profile_defaults);

	// register any tag metadata names
	foreach ($CONFIG->profile as $name => $type) {
		if ($type == 'tags') {
			elgg_register_tag_metadata_name($name);
			// register a tag name translation
			add_translation(get_current_language(), array("tag_names:$name" => elgg_echo("profile:$name")));
		}
	}
}

/**
 * Profile page handler
 *
 * @param array $page Array of page elements, forwarded by the page handling mechanism
 */
function profile_page_handler($page) {
	global $CONFIG;

	$username = $action = NULL;

	// short circuit if invalid or banned username
	if (isset($page[0])) {
		$username = $page[0];
		$user = get_user_by_username($username);

		if (!$user || ($user->isBanned() && !isadminloggedin())) {
			return elgg_echo('profile:notfound');
		} else {
			set_input('username', $page[0]);
		}
	}

	if (isset($page[1])) {
		$action = $page[1];
	}

	switch ($action) {
		case 'edit':
			if (!$user || !$user->canEdit()) {
				register_error(elgg_echo("profile:noaccess"));
				forward();
			}

			$content = profile_get_user_edit_content($user, $page);
			break;

		default:
			if (isset($page[1])) {
				$section = $page[1];
			} else {
				$section = 'activity';
			}
			$content = profile_get_user_profile_html($user, $section);
			break;
	}

	$content = elgg_view_layout('one_column', $content);

	page_draw($title, $content);
	return;
}

/**
 * Profile edit page handler
 *
 * @param array $page Array of page elements, forwarded by the page handling mechanism
 */
function profileedit_page_handler($page) {
	global $CONFIG;

	// The username should be the file we're getting
	if (isset($page[0])) {
		switch ($page[0]) {
			default:
				include($CONFIG->pluginspath . "profile/defaultprofile.php");
				break;
		}
	}
}

/**
 * Pagesetup function
 *
 */
function profile_pagesetup()
{
	global $CONFIG;
	if (get_context() == 'admin' && isadminloggedin()) {
		add_submenu_item(elgg_echo('profile:edit:default'), $CONFIG->wwwroot . 'pg/defaultprofile/edit/');
	}

	//add submenu options
	if (get_context() == "profile") {
		$page_owner = page_owner_entity();
		add_submenu_item(elgg_echo('profile:editdetails'), $CONFIG->wwwroot . "pg/profile/{$page_owner->username}/edit/details");
		add_submenu_item(elgg_echo('profile:editicon'), $CONFIG->wwwroot . "pg/profile/{$page_owner->username}/edit/icon");
	}
}

/**
 * Profile icon page handler
 *
 * @param array $page Array of page elements, forwarded by the page handling mechanism
 */
function profile_icon_handler($page) {
	global $CONFIG;

	// The username should be the file we're getting
	if (isset($page[0])) {
		set_input('username',$page[0]);
	}
	if (isset($page[1])) {
		set_input('size',$page[1]);
	}
	// Include the standard profile index
	include($CONFIG->pluginspath . "profile/icon.php");
}

/**
 * Icon JS
 */
function profile_iconjs_handler($page) {
	global $CONFIG;
	include($CONFIG->pluginspath . "profile/javascript.php");
}

/**
 * Profile URL generator for $user->getUrl();
 *
 * @param ElggUser $user
 * @return string User URL
 */
function profile_url($user) {
	global $CONFIG;
	return $CONFIG->wwwroot . "pg/profile/" . $user->username;
}

/**
 * This hooks into the getIcon API and provides nice user icons for users where possible.
 *
 * @param unknown_type $hook
 * @param unknown_type $entity_type
 * @param unknown_type $returnvalue
 * @param unknown_type $params
 * @return unknown
 */
function profile_usericon_hook($hook, $entity_type, $returnvalue, $params){
	global $CONFIG;
	if ((!$returnvalue) && ($hook == 'entity:icon:url') && ($params['entity'] instanceof ElggUser)){
		$entity = $params['entity'];
		$type = $entity->type;
		$subtype = get_subtype_from_id($entity->subtype);
		$viewtype = $params['viewtype'];
		$size = $params['size'];
		$username = $entity->username;

		if ($icontime = $entity->icontime) {
			$icontime = "{$icontime}";
		} else {
			$icontime = "default";
		}

		if ($entity->isBanned()) {
			return elgg_view('icon/user/default/'.$size);
		}

		$filehandler = new ElggFile();
		$filehandler->owner_guid = $entity->getGUID();
		$filehandler->setFilename("profile/" . $username . $size . ".jpg");

		if ($filehandler->exists()) {
			//$url = $CONFIG->url . "pg/icon/$username/$size/$icontime.jpg";
			return $CONFIG->wwwroot . 'mod/profile/icondirect.php?lastcache='.$icontime.'&amp;username='.$entity->username.'&amp;size='.$size;
		}
	}
}

// Make sure the profile initialisation function is called on initialisation
register_elgg_event_handler('init','system','profile_init',1);
register_elgg_event_handler('init','system','profile_fields_setup', 10000); // Ensure this runs after other plugins

register_elgg_event_handler('pagesetup','system','profile_pagesetup');
register_elgg_event_handler('profileupdate','all','object_notifications');


// Register actions
global $CONFIG;
register_action("profile/edit",false,$CONFIG->pluginspath . "profile/actions/edit.php");
register_action("profile/iconupload",false,$CONFIG->pluginspath . "profile/actions/iconupload.php");
register_action("profile/cropicon",false,$CONFIG->pluginspath . "profile/actions/cropicon.php");
register_action("profile/editdefault",false,$CONFIG->pluginspath . "profile/actions/editdefault.php", true);
register_action("profile/editdefault/delete",false,$CONFIG->pluginspath . "profile/actions/deletedefaultprofileitem.php", true);
register_action("profile/editdefault/reset",false,$CONFIG->pluginspath . "profile/actions/resetdefaultprofile.php", true);


// Define widgets for use in this context
use_widgets('profile');