<?php
/**
 * Start file for this plugin
 */

// define for default group access
define("GROUP_TOOLS_GROUP_ACCESS_DEFAULT", -10);

require_once(dirname(__FILE__) . "/lib/functions.php");
require_once(dirname(__FILE__) . "/lib/events.php");
require_once(dirname(__FILE__) . "/lib/hooks.php");
require_once(dirname(__FILE__) . "/lib/page_handlers.php");

// default elgg event handlers
elgg_register_event_handler("init", "system", "group_tools_init");
elgg_register_event_handler("ready", "system", "group_tools_ready");
elgg_register_event_handler("pagesetup", "system", "group_tools_pagesetup", 550);

/**
 * called when the Elgg system get initialized
 *
 * @return void
 */
function group_tools_init() {
	
	// extend css & js
	elgg_extend_view("css/elgg", "css/group_tools/site");
	elgg_extend_view("css/admin", "css/group_tools/admin");
	elgg_extend_view("js/elgg", "js/group_tools/site");
	elgg_extend_view("js/admin", "js/group_tools/admin");
	
	// extend page handlers
	elgg_register_plugin_hook_handler("route", "groups", "group_tools_route_groups_handler");
	elgg_register_plugin_hook_handler("route", "livesearch", "group_tools_route_livesearch_handler");
	
	elgg_register_page_handler("groupicon", "group_tools_groupicon_page_handler");
	elgg_register_plugin_hook_handler("entity:icon:url", "group", "groups_tools_group_icon_url_handler");
	
	// hook on title menu
	elgg_register_plugin_hook_handler("register", "menu:title", "group_tools_menu_title_handler");
	elgg_register_plugin_hook_handler("register", "menu:user_hover", "group_tools_menu_user_hover_handler");
	elgg_register_plugin_hook_handler("register", "menu:entity", "group_tools_menu_entity_handler");
	elgg_register_plugin_hook_handler("register", "menu:filter", "group_tools_menu_filter_handler");
	
	if (group_tools_multiple_admin_enabled()) {
		// add group tool option
		add_group_tool_option("group_multiple_admin_allow", elgg_echo("group_tools:multiple_admin:group_tool_option"), false);
		
		// register permissions check hook
		elgg_register_plugin_hook_handler("permissions_check", "group", "group_tools_multiple_admin_can_edit_hook");
		
		// register on group leave
		elgg_register_event_handler("leave", "group", "group_tools_multiple_admin_group_leave");
		
		//notify admin on membership request
		elgg_register_event_handler("create", "membership_request", "group_tools_membership_request");
	}
		
	// register group activity widget
	// 2012-05-03: restored limited functionality of group activity widget, will be fully restored if Elgg fixes widget settings
	elgg_register_widget_type("group_river_widget", elgg_echo("widgets:group_river_widget:title"), elgg_echo("widgets:group_river_widget:description"), array("dashboard", "profile", "index", "groups"), true);
	
	// register group members widget
	elgg_register_widget_type("group_members", elgg_echo("widgets:group_members:title"), elgg_echo("widgets:group_members:description"), array("groups"), false);
	
	// register groups invitations widget
	elgg_register_widget_type("group_invitations", elgg_echo("widgets:group_invitations:title"), elgg_echo("widgets:group_invitations:description"), array("index", "dashboard"), false);
	
	// register featured groups widget
	elgg_register_widget_type("featured_groups", elgg_echo("groups:featured"), elgg_echo("widgets:featured_groups:description"), array("index"));
	
	// register index groups widget
	elgg_register_widget_type("index_groups", elgg_echo("groups"), elgg_echo("widgets:index_groups:description"), array("index"), true);
	
	// quick start discussion
	elgg_register_widget_type("start_discussion", elgg_echo("group_tools:widgets:start_discussion:title"), elgg_echo("group_tools:widgets:start_discussion:description"), array("index", "dashboard", "groups"));
	
	// group invitation
	elgg_register_action("groups/invite", dirname(__FILE__) . "/actions/groups/invite.php");
	
	// manage auto join for groups
	elgg_extend_view("groups/edit", "group_tools/forms/special_states", 350);
	elgg_register_event_handler("create", "member_of_site", "group_tools_join_site_handler");
	
	// show group edit as tabbed
	elgg_extend_view("groups/edit", "group_tools/group_edit_tabbed", 1);
	elgg_extend_view("groups/edit", "group_tools/group_edit_tabbed_js", 999999999);
	
	// show group profile widgets - edit form
	elgg_extend_view("groups/edit", "group_tools/forms/profile_widgets", 400);
	
	// cleanup group side menu
	elgg_extend_view("groups/edit", "group_tools/forms/cleanup", 450);
	
	// group notifications
	elgg_extend_view("groups/edit", "group_tools/forms/notifications", 375);
	
	// allow group members to invite new members
	elgg_extend_view("groups/edit", "group_tools/forms/invite_members", 475);
	
	// configure a group welcome message
	elgg_extend_view("groups/edit", "group_tools/forms/welcome_message");
	
	// configure domain based group join
	elgg_extend_view("groups/edit", "group_tools/forms/domain_based");
	
	// show group status in owner block
	elgg_extend_view("page/elements/owner_block/extend", "group_tools/owner_block");
	// show group status in stats (on group profile)
	elgg_extend_view("groups/profile/summary", "group_tools/group_stats");
	
	if (elgg_is_active_plugin("blog")) {
		elgg_register_widget_type("group_news", elgg_echo("widgets:group_news:title"), elgg_echo("widgets:group_news:description"), array("profile", "index", "dashboard"), true);
		elgg_extend_view("css/elgg", "widgets/group_news/css");
	}
	
	// related groups
	add_group_tool_option("related_groups", elgg_echo("groups_tools:related_groups:tool_option"), false);
	elgg_extend_view("groups/tool_latest", "group_tools/modules/related_groups");
	elgg_register_widget_type("group_related", elgg_echo("groups_tools:related_groups:widget:title"), elgg_echo("groups_tools:related_groups:widget:description"), array("groups"));
	
	// registration
	elgg_extend_view("register/extend", "group_tools/register_extend");
	
	// theme sandbox
	elgg_extend_view("theme_sandbox/forms", "group_tools/theme_sandbox/grouppicker");
	
	// register index widget to show latest discussions
	elgg_register_widget_type("discussion", elgg_echo("discussion:latest"), elgg_echo("widgets:discussion:description"), array("index", "dashboard"), true);
	elgg_register_widget_type("group_forum_topics", elgg_echo("discussion:group"), elgg_echo("widgets:group_forum_topics:description"), array("groups"));
	
	// register events
	elgg_register_event_handler("join", "group", "group_tools_join_group_event");
	elgg_register_event_handler("delete", "relationship", array('ColdTrick\GroupTools\Membership', 'deleteRequest'));
	
	// register plugin hooks
	elgg_register_plugin_hook_handler("entity:url", "object", "group_tools_widget_url_handler");
	elgg_register_plugin_hook_handler("default", "access", "group_tools_access_default_handler");
	elgg_register_plugin_hook_handler("access:collections:write", "user", "group_tools_access_write_handler");
	elgg_register_plugin_hook_handler("action", "groups/join", "group_tools_join_group_action_handler");
	elgg_register_plugin_hook_handler("register", "menu:owner_block", "group_tools_register_owner_block_menu_handler");
	elgg_register_plugin_hook_handler("route", "register", "group_tools_route_register_handler");
	elgg_register_plugin_hook_handler("action", "register", "group_tools_action_register_handler");
	elgg_register_plugin_hook_handler("group_tool_widgets", "widget_manager", "group_tools_tool_widgets_handler");
	
	// actions
	elgg_register_action("group_tools/toggle_admin", dirname(__FILE__) . "/actions/toggle_admin.php");
	elgg_register_action("group_tools/mail", dirname(__FILE__) . "/actions/mail.php");
	elgg_register_action("group_tools/profile_widgets", dirname(__FILE__) . "/actions/profile_widgets.php");
	elgg_register_action("group_tools/cleanup", dirname(__FILE__) . "/actions/cleanup.php");
	elgg_register_action("group_tools/invite_members", dirname(__FILE__) . "/actions/invite_members.php");
	elgg_register_action("group_tools/welcome_message", dirname(__FILE__) . "/actions/welcome_message.php");
	elgg_register_action("group_tools/domain_based", dirname(__FILE__) . "/actions/domain_based.php");
	elgg_register_action("group_tools/related_groups", dirname(__FILE__) . "/actions/related_groups.php");
	elgg_register_action("group_tools/remove_related_groups", dirname(__FILE__) . "/actions/remove_related_groups.php");
	elgg_register_action("group_tools/member_export", dirname(__FILE__) . "/actions/member_export.php");
	
	elgg_register_action("group_tools/toggle_special_state", dirname(__FILE__) . "/actions/admin/toggle_special_state.php", "admin");
	elgg_register_action("group_tools/fix_auto_join", dirname(__FILE__) . "/actions/admin/fix_auto_join.php", "admin");
	elgg_register_action("group_tools/notifications", dirname(__FILE__) . "/actions/admin/notifications.php", "admin");
	elgg_register_action("group_tools/fix_acl", dirname(__FILE__) . "/actions/admin/fix_acl.php", "admin");
	elgg_register_action("group_tools/group_tool_presets", dirname(__FILE__) . "/actions/admin/group_tool_presets.php", "admin");
	elgg_register_action("group_tools/admin/bulk_delete", dirname(__FILE__) . "/actions/admin/bulk_delete.php", "admin");
	
	elgg_register_action("groups/email_invitation", dirname(__FILE__) . "/actions/groups/email_invitation.php");
	elgg_register_action("groups/decline_email_invitation", dirname(__FILE__) . "/actions/groups/decline_email_invitation.php");
	elgg_register_action("group_tools/revoke_email_invitation", dirname(__FILE__) . "/actions/groups/revoke_email_invitation.php");
	elgg_register_action("groups/edit", dirname(__FILE__) . "/actions/groups/edit.php");

	elgg_register_action("group_tools/order_groups", dirname(__FILE__) . "/actions/order_groups.php", "admin");
	
	elgg_register_action("discussion/toggle_status", dirname(__FILE__) . "/actions/discussion/toggle_status.php");
}

/**
 * called when the system is ready
 *
 * @return void
 */
function group_tools_ready() {
	// unregister dashboard widget group_activity
	elgg_unregister_widget_type("group_activity");
}

/**
 * called just before a page starts with output
 *
 * @return void
 */
function group_tools_pagesetup() {
	
	$user = elgg_get_logged_in_user_entity();
	$page_owner = elgg_get_page_owner_entity();
	
	// admin menu item
	elgg_register_admin_menu_item("configure", "group_tool_presets", "appearance");
	elgg_register_admin_menu_item("administer", "group_bulk_delete", "administer_utilities");
	
	if (elgg_in_context("groups") && ($page_owner instanceof ElggGroup)) {
		if ($page_owner->forum_enable == "no") {
			// unset if not enabled for this plugin
			elgg_unregister_widget_type("group_forum_topics");
		}
		
		if (!empty($user)) {
			// check multiple admin
			if (elgg_get_plugin_setting("multiple_admin", "group_tools") == "yes") {
				// extend group members sidebar list
				elgg_extend_view("groups/sidebar/members", "group_tools/group_admins", 400);
				
				// remove group tool options for group admins
				if (($page_owner->getOwnerGUID() != $user->getGUID()) && !$user->isAdmin()) {
					remove_group_tool_option("group_multiple_admin_allow");
				}
			}
			
			// invitation management
			if ($page_owner->canEdit()) {
				$request_options = array(
					"type" => "user",
					"relationship" => "membership_request",
					"relationship_guid" => $page_owner->getGUID(),
					"inverse_relationship" => true,
					"count" => true
				);
				
				$requests = elgg_get_entities_from_relationship($request_options);
				
				$postfix = "";
				if (!empty($requests)) {
					$postfix = " [" . $requests . "]";
				}
				
				if (!$page_owner->isPublicMembership()) {
					elgg_register_menu_item("page", array(
						"name" => "membership_requests",
						"text" => elgg_echo("groups:membershiprequests") . $postfix,
						"href" => "groups/requests/" . $page_owner->getGUID(),
					));
				} else {
					elgg_register_menu_item("page", array(
						"name" => "membership_requests",
						"text" => elgg_echo("group_tools:menu:invitations") . $postfix,
						"href" => "groups/requests/" . $page_owner->getGUID(),
					));
				}
			}
			
			// group mail options
			if ($page_owner->canEdit() && (elgg_get_plugin_setting("mail", "group_tools") == "yes")) {
				elgg_register_menu_item("page", array(
					"name" => "mail",
					"text" => elgg_echo("group_tools:menu:mail"),
					"href" => "groups/mail/" . $page_owner->getGUID(),
				));
			}
		}
	}
	
	if ($page_owner instanceof ElggGroup) {
		if (!$page_owner->isPublicMembership()) {
			if (elgg_get_plugin_setting("search_index", "group_tools") != "yes") {
				// closed groups should be indexed by search engines
				elgg_extend_view("page/elements/head", "metatags/noindex");
			}
		}
		
		// cleanup sidebar
		elgg_extend_view("page/elements/sidebar", "group_tools/sidebar/cleanup");
	}
	
}