<?php
/**
 * BuddyPress Activity component admin screen.
 *
 * Props to WordPress core for the Comments admin screen, and its contextual
 * help text, on which this implementation is heavily based.
 *
 * @package BuddyPress
 * @since BuddyPress (1.6.0)
 * @subpackage Activity
 */

// Exit if accessed directly
defined( 'ABSPATH' ) || exit;

// Include WP's list table class
if ( !class_exists( 'WP_List_Table' ) ) require( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );

// per_page screen option. Has to be hooked in extremely early.
if ( is_admin() && ! empty( $_REQUEST['page'] ) && 'bp-activity' == $_REQUEST['page'] )
	add_filter( 'set-screen-option', 'bp_activity_admin_screen_options', 10, 3 );

/**
 * Register the Activity component admin screen.
 *
 * @since BuddyPress (1.6)
 */
function bp_activity_add_admin_menu() {

	// Add our screen
	$hook = add_menu_page(
		_x( 'Activity', 'Admin Dashbord SWA page title', 'buddypress' ),
		_x( 'Activity', 'Admin Dashbord SWA menu', 'buddypress' ),
		'bp_moderate',
		'bp-activity',
		'bp_activity_admin',
		'div'
	);

	// Hook into early actions to load custom CSS and our init handler.
	add_action( "load-$hook", 'bp_activity_admin_load' );
}
add_action( bp_core_admin_hook(), 'bp_activity_add_admin_menu' );

/**
 * Add activity component to custom menus array.
 *
 * Several BuddyPress components have top-level menu items in the Dashboard,
 * which all appear together in the middle of the Dashboard menu. This function
 * adds the Activity page to the array of these menu items.
 *
 * @since BuddyPress (1.7.0)
 *
 * @param array $custom_menus The list of top-level BP menu items.
 *
 * @return array $custom_menus List of top-level BP menu items, with Activity added.
 */
function bp_activity_admin_menu_order( $custom_menus = array() ) {
	array_push( $custom_menus, 'bp-activity' );
	return $custom_menus;
}
add_filter( 'bp_admin_menu_order', 'bp_activity_admin_menu_order' );

/**
 * AJAX receiver for Activity replies via the admin screen.
 *
 * Processes requests to add new activity comments, and echoes HTML for a new
 * table row.
 *
 * @since BuddyPress (1.6.0)
 */
function bp_activity_admin_reply() {
	// Check nonce
	check_ajax_referer( 'bp-activity-admin-reply', '_ajax_nonce-bp-activity-admin-reply' );

	$parent_id = ! empty( $_REQUEST['parent_id'] ) ? (int) $_REQUEST['parent_id'] : 0;
	$root_id   = ! empty( $_REQUEST['root_id'] )   ? (int) $_REQUEST['root_id']   : 0;

	// $parent_id is required
	if ( empty( $parent_id ) )
		die( '-1' );

	// If $root_id not set (e.g. for root items), use $parent_id
	if ( empty( $root_id ) )
		$root_id = $parent_id;

	// Check that a reply has been entered
	if ( empty( $_REQUEST['content'] ) )
		die( __( 'ERROR: Please type a reply.', 'buddypress' ) );

	// Check parent activity exists
	$parent_activity = new BP_Activity_Activity( $parent_id );
	if ( empty( $parent_activity->component ) )
		die( __( 'ERROR: The item you are trying to reply to cannot be found, or it has been deleted.', 'buddypress' ) );

	// @todo: Check if user is allowed to create new activity items
	// if ( ! current_user_can( 'bp_new_activity' ) )
	if ( ! current_user_can( 'bp_moderate' ) )
		die( '-1' );

	// Add new activity comment
	$new_activity_id = bp_activity_new_comment( array(
		'activity_id' => $root_id,              // ID of the root activity item
		'content'     => $_REQUEST['content'],
		'parent_id'   => $parent_id,            // ID of a parent comment
	) );

	// Fetch the new activity item, as we need it to create table markup to return
	$new_activity = new BP_Activity_Activity( $new_activity_id );

	// This needs to be set for the BP_Activity_List_Table constructor to work
	set_current_screen( 'toplevel_page_bp-activity' );

	// Set up an output buffer
	ob_start();
	$list_table = new BP_Activity_List_Table();
	$list_table->single_row( (array) $new_activity );

	// Get table markup
	$response =  array(
		'data'     => ob_get_contents(),
		'id'       => $new_activity_id,
		'position' => -1,
		'what'     => 'bp_activity',
	);
	ob_end_clean();

	// Send response
	$r = new WP_Ajax_Response();
	$r->add( $response );
	$r->send();

	exit();
}
add_action( 'wp_ajax_bp-activity-admin-reply', 'bp_activity_admin_reply' );

/**
 * Handle save/update of screen options for the Activity component admin screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param string $value     Will always be false unless another plugin filters it first.
 * @param string $option    Screen option name.
 * @param string $new_value Screen option form value.
 *
 * @return string Option value. False to abandon update.
 */
function bp_activity_admin_screen_options( $value, $option, $new_value ) {
	if ( 'toplevel_page_bp_activity_per_page' != $option && 'toplevel_page_bp_activity_network_per_page' != $option )
		return $value;

	// Per page
	$new_value = (int) $new_value;
	if ( $new_value < 1 || $new_value > 999 )
		return $value;

	return $new_value;
}

/**
 * Hide the advanced edit meta boxes by default, so we don't clutter the screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param array     $hidden Array of items to hide.
 * @param WP_Screen $screen Screen identifier.
 *
 * @return array Hidden Meta Boxes.
 */
function bp_activity_admin_edit_hidden_metaboxes( $hidden, $screen ) {
	if ( empty( $screen->id ) || 'toplevel_page_bp-activity' != $screen->id && 'toplevel_page_bp-activity_network' != $screen->id )
		return $hidden;

	// Hide the primary link meta box by default
	$hidden  = array_merge( (array) $hidden, array( 'bp_activity_itemids', 'bp_activity_link', 'bp_activity_type', 'bp_activity_userid', ) );

	/**
	 * Filters default hidden metaboxes so plugins can alter list.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param array     $hidden Default metaboxes to hide.
	 * @param WP_Screen $screen Screen identifier.
	 */
	return apply_filters( 'bp_hide_meta_boxes', array_unique( $hidden ), $screen );
}
add_filter( 'default_hidden_meta_boxes', 'bp_activity_admin_edit_hidden_metaboxes', 10, 2 );

/**
 * Set up the Activity admin page.
 *
 * Does the following:
 *   - Register contextual help and screen options for this admin page.
 *   - Enqueues scripts and styles.
 *   - Catches POST and GET requests related to Activity.
 *
 * @since BuddyPress (1.6.0)
 *
 * @global object                 $bp                     BuddyPress global settings.
 * @global BP_Activity_List_Table $bp_activity_list_table Activity screen list table.
 */
function bp_activity_admin_load() {
	global $bp_activity_list_table;

	$bp = buddypress();

	// Decide whether to load the dev version of the CSS and JavaScript
	$min = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : 'min.';

	$doaction = bp_admin_list_table_current_bulk_action();

	/**
	 * Fires at top of Activity admin page.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param string $doaction Current $_GET action being performed in admin screen.
	 */
	do_action( 'bp_activity_admin_load', $doaction );

	// Edit screen
	if ( 'edit' == $doaction && ! empty( $_GET['aid'] ) ) {
		// columns screen option
		add_screen_option( 'layout_columns', array( 'default' => 2, 'max' => 2, ) );

		get_current_screen()->add_help_tab( array(
			'id'      => 'bp-activity-edit-overview',
			'title'   => __( 'Overview', 'buddypress' ),
			'content' =>
				'<p>' . __( 'You edit activities made on your site similar to the way you edit a comment. This is useful if you need to change which page the activity links to, or when you notice that the author has made a typographical error.', 'buddypress' ) . '</p>' .
				'<p>' . __( 'The two big editing areas for the activity title and content are fixed in place, but you can reposition all the other boxes using drag and drop, and can minimize or expand them by clicking the title bar of each box. Use the Screen Options tab to unhide more boxes (Primary Item/Secondary Item, Link, Type, Author ID) or to choose a 1- or 2-column layout for this screen.', 'buddypress' ) . '</p>' .
				'<p>' . __( 'You can also moderate the activity from this screen using the Status box, where you can also change the timestamp of the activity.', 'buddypress' ) . '</p>'
		) );

		get_current_screen()->add_help_tab( array(
			'id'      => 'bp-activity-edit-advanced',
			'title'   => __( 'Item, Link, Type', 'buddypress' ),
			'content' =>
				'<p>' . __( '<strong>Primary Item/Secondary Item</strong> - These identify the object that created the activity. For example, the fields could reference a comment left on a specific site. Some types of activity may only use one, or none, of these fields.', 'buddypress' ) . '</p>' .
				'<p>' . __( '<strong>Link</strong> - Used by some types of activity (e.g blog posts and comments, and forum topics and replies) to store a link back to the original content.', 'buddypress' ) . '</p>' .
				'<p>' . __( '<strong>Type</strong> - Each distinct kind of activity has its own type. For example, <code>created_group</code> is used when a group is created and <code>joined_group</code> is used when a user joins a group.', 'buddypress' ) . '</p>' .
				'<p>' . __( 'For information about when and how BuddyPress uses all of these settings, see the Managing Activity link in the panel to the side.', 'buddypress' ) . '</p>'
		) );

		// Help panel - sidebar links
		get_current_screen()->set_help_sidebar(
			'<p><strong>' . __( 'For more information:', 'buddypress' ) . '</strong></p>' .
			'<p>' . __( '<a href="https://codex.buddypress.org/administrator-guide/activity-stream-management-panels/">Managing Activity</a>', 'buddypress' ) . '</p>' .
			'<p>' . __( '<a href="https://buddypress.org/support/">Support Forums</a>', 'buddypress' ) . '</p>'
		);

		// Register metaboxes for the edit screen.
		add_meta_box( 'submitdiv',           _x( 'Status', 'activity admin edit screen', 'buddypress' ), 'bp_activity_admin_edit_metabox_status', get_current_screen()->id, 'side', 'core' );
		add_meta_box( 'bp_activity_itemids', _x( 'Primary Item/Secondary Item', 'activity admin edit screen', 'buddypress' ), 'bp_activity_admin_edit_metabox_itemids', get_current_screen()->id, 'normal', 'core' );
		add_meta_box( 'bp_activity_link',    _x( 'Link', 'activity admin edit screen', 'buddypress' ), 'bp_activity_admin_edit_metabox_link', get_current_screen()->id, 'normal', 'core' );
		add_meta_box( 'bp_activity_type',    _x( 'Type', 'activity admin edit screen', 'buddypress' ), 'bp_activity_admin_edit_metabox_type', get_current_screen()->id, 'normal', 'core' );
		add_meta_box( 'bp_activity_userid',  _x( 'Author ID', 'activity admin edit screen', 'buddypress' ), 'bp_activity_admin_edit_metabox_userid', get_current_screen()->id, 'normal', 'core' );

		// Enqueue JavaScript files
		wp_enqueue_script( 'postbox' );
		wp_enqueue_script( 'dashboard' );
		wp_enqueue_script( 'comment' );

	// Index screen
	} else {
		// Create the Activity screen list table
		$bp_activity_list_table = new BP_Activity_List_Table();

		// per_page screen option
		add_screen_option( 'per_page', array( 'label' => _x( 'Activity', 'Activity items per page (screen options)', 'buddypress' )) );

		// Help panel - overview text
		get_current_screen()->add_help_tab( array(
			'id'      => 'bp-activity-overview',
			'title'   => __( 'Overview', 'buddypress' ),
			'content' =>
				'<p>' . __( 'You can manage activities made on your site similar to the way you manage comments and other content. This screen is customizable in the same ways as other management screens, and you can act on activities using the on-hover action links or the Bulk Actions.', 'buddypress' ) . '</p>' .
				'<p>' . __( 'There are many different types of activities. Some are generated automatically by BuddyPress and other plugins, and some are entered directly by a user in the form of status update. To help manage the different activity types, use the filter dropdown box to switch between them.', 'buddypress' ) . '</p>'
		) );

		// Help panel - moderation text
		get_current_screen()->add_help_tab( array(
			'id'		=> 'bp-activity-moderating',
			'title'		=> __( 'Moderating Activity', 'buddypress' ),
			'content'	=>
				'<p>' . __( 'In the <strong>Activity</strong> column, above each activity it says &#8220;Submitted on,&#8221; followed by the date and time the activity item was generated on your site. Clicking on the date/time link will take you to that activity on your live site. Hovering over any activity gives you options to reply, edit, spam mark, or delete that activity.', 'buddypress' ) . '</p>' .
				'<p>' . __( "In the <strong>In Response To</strong> column, if the activity was in reply to another activity, it shows that activity's author's picture and name, and a link to that activity on your live site. If there is a small bubble, the number in it shows how many other activities are related to this one; these are usually comments. Clicking the bubble will filter the activity screen to show only related activity items.", 'buddypress' ) . '</p>'
		) );

		// Help panel - sidebar links
		get_current_screen()->set_help_sidebar(
			'<p><strong>' . __( 'For more information:', 'buddypress' ) . '</strong></p>' .
			'<p>' . __( '<a href="https://buddypress.org/support/">Support Forums</a>', 'buddypress' ) . '</p>'
		);
	}

	// Enqueue CSS and JavaScript
	wp_enqueue_script( 'bp_activity_admin_js', $bp->plugin_url . "bp-activity/admin/js/admin.{$min}js",   array( 'jquery', 'wp-ajax-response' ), bp_get_version(), true );
	wp_localize_script( 'bp_activity_admin_js', 'bp_activity_admin_vars', array(
 	  	'page'   => get_current_screen()->id
 	) );
	wp_enqueue_style( 'bp_activity_admin_css', $bp->plugin_url . "bp-activity/admin/css/admin.{$min}css", array(),                               bp_get_version()       );

	wp_style_add_data( 'bp_activity_admin_css', 'rtl', true );
	if ( $min ) {
		wp_style_add_data( 'bp_activity_admin_css', 'suffix', $min );
	}


	// Handle spam/un-spam/delete of activities
	if ( !empty( $doaction ) && ! in_array( $doaction, array( '-1', 'edit', 'save', ) ) ) {

		// Build redirection URL
		$redirect_to = remove_query_arg( array( 'aid', 'deleted', 'error', 'spammed', 'unspammed', ), wp_get_referer() );
		$redirect_to = add_query_arg( 'paged', $bp_activity_list_table->get_pagenum(), $redirect_to );

		// Get activity IDs
		$activity_ids = array_map( 'absint', (array) $_REQUEST['aid'] );

		/**
		 * Filters list of IDs being spammed/un-spammed/deleted.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param array $activity_ids Activity IDs to spam/un-spam/delete.
		 */
		$activity_ids = apply_filters( 'bp_activity_admin_action_activity_ids', $activity_ids );

		// Is this a bulk request?
		if ( 'bulk_' == substr( $doaction, 0, 5 ) && ! empty( $_REQUEST['aid'] ) ) {
			// Check this is a valid form submission
			check_admin_referer( 'bulk-activities' );

			// Trim 'bulk_' off the action name to avoid duplicating a ton of code
			$doaction = substr( $doaction, 5 );

		// This is a request to delete, spam, or un-spam, a single item.
		} elseif ( !empty( $_REQUEST['aid'] ) ) {

			// Check this is a valid form submission
			check_admin_referer( 'spam-activity_' . $activity_ids[0] );
		}

		// Initialise counters for how many of each type of item we perform an action on
		$deleted = $spammed = $unspammed = 0;

		// Store any errors that occurs when updating the database items
		$errors = array();

		// "We'd like to shoot the monster, could you move, please?"
		foreach ( $activity_ids as $activity_id ) {
			// @todo: Check the permissions on each
			//if ( ! current_user_can( 'bp_edit_activity', $activity_id ) )
			//	continue;

			// Get the activity from the database
			$activity = new BP_Activity_Activity( $activity_id );
			if ( empty( $activity->component ) ) {
				$errors[] = $activity_id;
				continue;
			}

			switch ( $doaction ) {
				case 'delete' :
					if ( 'activity_comment' == $activity->type )
						bp_activity_delete_comment( $activity->item_id, $activity->id );
					else
						bp_activity_delete( array( 'id' => $activity->id ) );

					$deleted++;
					break;

				case 'ham' :
					/**
					 * Remove moderation and blacklist checks in case we want to ham an activity
					 * which contains one of these listed keys.
					 */
					remove_action( 'bp_activity_before_save', 'bp_activity_check_moderation_keys', 2, 1 );
					remove_action( 'bp_activity_before_save', 'bp_activity_check_blacklist_keys',  2, 1 );

					bp_activity_mark_as_ham( $activity );
					$result = $activity->save();

					// Check for any error during activity save
					if ( ! $result )
						$errors[] = $activity->id;
					else
						$unspammed++;
					break;

				case 'spam' :
					bp_activity_mark_as_spam( $activity );
					$result = $activity->save();

					// Check for any error during activity save
					if ( ! $result )
						$errors[] = $activity->id;
					else
						$spammed++;
					break;

				default:
					break;
			}

			// Release memory
			unset( $activity );
		}

		/**
		 * Fires before redirect for plugins to do something with activity.
		 *
		 * Passes an activity array counts how many were spam, not spam, deleted, and IDs that were errors.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param array  $value        Array holding spam, not spam, deleted counts, error IDs.
		 * @param string $redirect_to  URL to redirect to.
		 * @param array  $activity_ids Original array of activity IDs.
		 */
		do_action( 'bp_activity_admin_action_after', array( $spammed, $unspammed, $deleted, $errors ), $redirect_to, $activity_ids );

		// Add arguments to the redirect URL so that on page reload, we can easily display what we've just done.
		if ( $spammed )
			$redirect_to = add_query_arg( 'spammed', $spammed, $redirect_to );

		if ( $unspammed )
			$redirect_to = add_query_arg( 'unspammed', $unspammed, $redirect_to );

		if ( $deleted )
			$redirect_to = add_query_arg( 'deleted', $deleted, $redirect_to );

		// If an error occurred, pass back the activity ID that failed
		if ( ! empty( $errors ) )
			$redirect_to = add_query_arg( 'error', implode ( ',', array_map( 'absint', $errors ) ), $redirect_to );

		/**
		 * Filters redirect URL after activity spamming/un-spamming/deletion occurs.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param string $redirect_to URL to redirect to.
		 */
		wp_redirect( apply_filters( 'bp_activity_admin_action_redirect', $redirect_to ) );
		exit;


	// Save the edit
	} elseif ( $doaction && 'save' == $doaction ) {
		// Build redirection URL
		$redirect_to = remove_query_arg( array( 'action', 'aid', 'deleted', 'error', 'spammed', 'unspammed', ), $_SERVER['REQUEST_URI'] );

		// Get activity ID
		$activity_id = (int) $_REQUEST['aid'];

		// Check this is a valid form submission
		check_admin_referer( 'edit-activity_' . $activity_id );

		// Get the activity from the database
		$activity = new BP_Activity_Activity( $activity_id );

		// If the activity doesn't exist, just redirect back to the index
		if ( empty( $activity->component ) ) {
			wp_redirect( $redirect_to );
			exit;
		}

		// Check the form for the updated properties

		// Store any error that occurs when updating the database item
		$error = 0;

		// Activity spam status
		$prev_spam_status = $new_spam_status = false;
		if ( ! empty( $_POST['activity_status'] ) ) {
			$prev_spam_status = $activity->is_spam;
			$new_spam_status  = ( 'spam' == $_POST['activity_status'] ) ? true : false;
		}

		// Activity action
		if ( isset( $_POST['bp-activities-action'] ) )
			$activity->action = $_POST['bp-activities-action'];

		// Activity content
		if ( isset( $_POST['bp-activities-content'] ) )
			$activity->content = $_POST['bp-activities-content'];

		// Activity primary link
		if ( ! empty( $_POST['bp-activities-link'] ) )
			$activity->primary_link = $_POST['bp-activities-link'];

		// Activity user ID
		if ( ! empty( $_POST['bp-activities-userid'] ) )
			$activity->user_id = (int) $_POST['bp-activities-userid'];

		// Activity item primary ID
		if ( isset( $_POST['bp-activities-primaryid'] ) )
			$activity->item_id = (int) $_POST['bp-activities-primaryid'];

		// Activity item secondary ID
		if ( isset( $_POST['bp-activities-secondaryid'] ) )
			$activity->secondary_item_id = (int) $_POST['bp-activities-secondaryid'];

		// Activity type
		if ( ! empty( $_POST['bp-activities-type'] ) ) {
			$actions = bp_activity_admin_get_activity_actions();

			// Check that the new type is a registered activity type
			if ( in_array( $_POST['bp-activities-type'], $actions ) ) {
				$activity->type = $_POST['bp-activities-type'];
			}
		}

		// Activity timestamp
		if ( ! empty( $_POST['aa'] ) && ! empty( $_POST['mm'] ) && ! empty( $_POST['jj'] ) && ! empty( $_POST['hh'] ) && ! empty( $_POST['mn'] ) && ! empty( $_POST['ss'] ) ) {
			$aa = $_POST['aa'];
			$mm = $_POST['mm'];
			$jj = $_POST['jj'];
			$hh = $_POST['hh'];
			$mn = $_POST['mn'];
			$ss = $_POST['ss'];
			$aa = ( $aa <= 0 ) ? date( 'Y' ) : $aa;
			$mm = ( $mm <= 0 ) ? date( 'n' ) : $mm;
			$jj = ( $jj > 31 ) ? 31 : $jj;
			$jj = ( $jj <= 0 ) ? date( 'j' ) : $jj;
			$hh = ( $hh > 23 ) ? $hh -24 : $hh;
			$mn = ( $mn > 59 ) ? $mn -60 : $mn;
			$ss = ( $ss > 59 ) ? $ss -60 : $ss;

			// Reconstruct the date into a timestamp
			$gmt_date = sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $aa, $mm, $jj, $hh, $mn, $ss );

			$activity->date_recorded = $gmt_date;
		}

		// Has the spam status has changed?
		if ( $new_spam_status != $prev_spam_status ) {
			if ( $new_spam_status )
				bp_activity_mark_as_spam( $activity );
			else
				bp_activity_mark_as_ham( $activity );
		}

		// Save
		$result = $activity->save();

		// Clear the activity stream first page cache, in case this activity's timestamp was changed
		wp_cache_delete( 'bp_activity_sitewide_front', 'bp' );

		// Check for any error during activity save
		if ( false === $result )
			$error = $activity->id;

		/**
		 * Fires before redirect so plugins can do something first on save action.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param array Array holding activity object and ID that holds error.
		 */
		do_action_ref_array( 'bp_activity_admin_edit_after', array( &$activity, $error ) );

		// If an error occurred, pass back the activity ID that failed
		if ( $error )
			$redirect_to = add_query_arg( 'error', (int) $error, $redirect_to );
		else
			$redirect_to = add_query_arg( 'updated', (int) $activity->id, $redirect_to );

		/**
		 * Filters URL to redirect to after saving.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param string $redirect_to URL to redirect to.
		 */
		wp_redirect( apply_filters( 'bp_activity_admin_edit_redirect', $redirect_to ) );
		exit;


	// If a referrer and a nonce is supplied, but no action, redirect back.
	} elseif ( ! empty( $_GET['_wp_http_referer'] ) ) {
		wp_redirect( remove_query_arg( array( '_wp_http_referer', '_wpnonce' ), stripslashes( $_SERVER['REQUEST_URI'] ) ) );
		exit;
	}
}

/**
 * Output the Activity component admin screens.
 *
 * @since BuddyPress (1.6.0)
 */
function bp_activity_admin() {
	// Decide whether to load the index or edit screen
	$doaction = ! empty( $_REQUEST['action'] ) ? $_REQUEST['action'] : '';

	// Display the single activity edit screen
	if ( 'edit' == $doaction && ! empty( $_GET['aid'] ) )
		bp_activity_admin_edit();

	// Otherwise, display the Activity index screen
	else
		bp_activity_admin_index();
}

/**
 * Display the single activity edit screen.
 *
 * @since BuddyPress (1.6.0)
 */
function bp_activity_admin_edit() {

	// @todo: Check if user is allowed to edit activity items
	// if ( ! current_user_can( 'bp_edit_activity' ) )
	if ( ! is_super_admin() )
		die( '-1' );

	// Get the activity from the database
	$activity = bp_activity_get( array(
		'in'               => ! empty( $_REQUEST['aid'] ) ? (int) $_REQUEST['aid'] : 0,
		'max'              => 1,
		'show_hidden'      => true,
		'spam'             => 'all',
		'display_comments' => 0
	) );

	if ( ! empty( $activity['activities'][0] ) ) {
		$activity = $activity['activities'][0];

		// Workaround to use WP's touch_time() without duplicating that function
		$GLOBALS['comment'] = new stdClass;
		$GLOBALS['comment']->comment_date = $activity->date_recorded;
	} else {
		$activity = '';
	}

	// Construct URL for form
	$form_url = remove_query_arg( array( 'action', 'deleted', 'error', 'spammed', 'unspammed', ), $_SERVER['REQUEST_URI'] );
	$form_url = add_query_arg( 'action', 'save', $form_url );

	/**
	 * Fires before activity edit form is displays so plugins can modify the activity.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param array $value Array holding single activity object that was passed by reference.
	 */
	do_action_ref_array( 'bp_activity_admin_edit', array( &$activity ) ); ?>

	<div class="wrap">
		<?php screen_icon( 'buddypress-activity' ); ?>
		<h2><?php printf( __( 'Editing Activity (ID #%s)', 'buddypress' ), number_format_i18n( (int) $_REQUEST['aid'] ) ); ?></h2>

		<?php if ( ! empty( $activity ) ) : ?>

			<form action="<?php echo esc_url( $form_url ); ?>" id="bp-activities-edit-form" method="post">
				<div id="poststuff">

					<div id="post-body" class="metabox-holder columns-<?php echo 1 == get_current_screen()->get_columns() ? '1' : '2'; ?>">
						<div id="post-body-content">
							<div id="postdiv">
								<div id="bp_activity_action" class="postbox">
									<h3><?php _e( 'Action', 'buddypress' ); ?></h3>
									<div class="inside">
										<?php wp_editor( stripslashes( $activity->action ), 'bp-activities-action', array( 'media_buttons' => false, 'textarea_rows' => 7, 'teeny' => true, 'quicktags' => array( 'buttons' => 'strong,em,link,block,del,ins,img,code,spell,close' ) ) ); ?>
									</div>
								</div>

								<div id="bp_activity_content" class="postbox">
									<h3><?php _e( 'Content', 'buddypress' ); ?></h3>
									<div class="inside">
										<?php wp_editor( stripslashes( $activity->content ), 'bp-activities-content', array( 'media_buttons' => false, 'teeny' => true, 'quicktags' => array( 'buttons' => 'strong,em,link,block,del,ins,img,code,spell,close' ) ) ); ?>
									</div>
								</div>
							</div>
						</div><!-- #post-body-content -->

						<div id="postbox-container-1" class="postbox-container">
							<?php do_meta_boxes( get_current_screen()->id, 'side', $activity ); ?>
						</div>

						<div id="postbox-container-2" class="postbox-container">
							<?php do_meta_boxes( get_current_screen()->id, 'normal', $activity ); ?>
							<?php do_meta_boxes( get_current_screen()->id, 'advanced', $activity ); ?>
						</div>
					</div><!-- #post-body -->

				</div><!-- #poststuff -->
				<?php wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false ); ?>
				<?php wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false ); ?>
				<?php wp_nonce_field( 'edit-activity_' . $activity->id ); ?>
			</form>

		<?php else : ?>
			<p><?php printf( __( 'No activity found with this ID. <a href="%s">Go back and try again</a>.', 'buddypress' ), esc_url( bp_get_admin_url( 'admin.php?page=bp-activity' ) ) ); ?></p>
		<?php endif; ?>

	</div><!-- .wrap -->

<?php
}

/**
 * Status metabox for the Activity admin edit screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param object $item Activity item.
 */
function bp_activity_admin_edit_metabox_status( $item ) {
?>

	<div class="submitbox" id="submitcomment">

		<div id="minor-publishing">
			<div id="minor-publishing-actions">
				<div id="preview-action">
					<a class="button preview" href="<?php echo esc_attr( bp_activity_get_permalink( $item->id, $item ) ); ?>" target="_blank"><?php _e( 'View Activity', 'buddypress' ); ?></a>
				</div>

				<div class="clear"></div>
			</div><!-- #minor-publishing-actions -->

			<div id="misc-publishing-actions">
				<div class="misc-pub-section" id="comment-status-radio">
					<label class="approved"><input type="radio" name="activity_status" value="ham" <?php checked( $item->is_spam, 0 ); ?>><?php _e( 'Approved', 'buddypress' ); ?></label><br />
					<label class="spam"><input type="radio" name="activity_status" value="spam" <?php checked( $item->is_spam, 1 ); ?>><?php _e( 'Spam', 'buddypress' ); ?></label>
				</div>

				<div class="misc-pub-section curtime misc-pub-section-last">
					<?php
					// translators: Publish box date format, see http://php.net/date
					$datef = __( 'M j, Y @ G:i', 'buddypress' );
					$date  = date_i18n( $datef, strtotime( $item->date_recorded ) );
					?>
					<span id="timestamp"><?php printf( __( 'Submitted on: <strong>%1$s</strong>', 'buddypress' ), $date ); ?></span>&nbsp;<a href="#edit_timestamp" class="edit-timestamp hide-if-no-js" tabindex='4'><?php _e( 'Edit', 'buddypress' ); ?></a>

					<div id='timestampdiv' class='hide-if-js'>
						<?php touch_time( 1, 0, 5 ); ?>
					</div><!-- #timestampdiv -->
				</div>
			</div> <!-- #misc-publishing-actions -->

			<div class="clear"></div>
		</div><!-- #minor-publishing -->

		<div id="major-publishing-actions">
			<div id="publishing-action">
				<?php submit_button( __( 'Update', 'buddypress' ), 'primary', 'save', false, array( 'tabindex' => '4' ) ); ?>
			</div>
			<div class="clear"></div>
		</div><!-- #major-publishing-actions -->

	</div><!-- #submitcomment -->

<?php
}

/**
 * Primary link metabox for the Activity admin edit screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param object $item Activity item.
 */
function bp_activity_admin_edit_metabox_link( $item ) {
?>

	<label class="screen-reader-text" for="bp-activities-link"><?php _e( 'Link', 'buddypress' ); ?></label>
	<input type="url" name="bp-activities-link" value="<?php echo esc_url( $item->primary_link ); ?>" />
	<p><?php _e( 'Activity generated by posts and comments, forum topics and replies, and some plugins, uses the link field for a permalink back to the content item.', 'buddypress' ); ?></p>

<?php
}

/**
 * User ID metabox for the Activity admin edit screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param object $item Activity item.
 */
function bp_activity_admin_edit_metabox_userid( $item ) {
?>

	<label class="screen-reader-text" for="bp-activities-userid"><?php _e( 'Author ID', 'buddypress' ); ?></label>
	<input type="number" name="bp-activities-userid" value="<?php echo esc_attr( $item->user_id ); ?>" min="1" />

<?php
}

/**
 * Get flattened array of all registered activity actions.
 *
 * Format is [activity_type] => Pretty name for activity type.
 *
 * @since BuddyPress (2.0.0)
 *
 * @return array
 */
function bp_activity_admin_get_activity_actions() {
	$actions  = array();

	// Walk through the registered actions, and build an array of actions/values.
	foreach ( bp_activity_get_actions() as $action ) {
		$action = array_values( (array) $action );

		for ( $i = 0, $i_count = count( $action ); $i < $i_count; $i++ ) {
			$actions[ $action[$i]['key'] ] = $action[$i]['value'];
		}
	}

	// This was a mis-named activity type from before BP 1.6
	unset( $actions['friends_register_activity_action'] );

	// Sort array by the human-readable value
	natsort( $actions );

	return $actions;
}

/**
 * Activity type metabox for the Activity admin edit screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param object $item Activity item.
 */
function bp_activity_admin_edit_metabox_type( $item ) {
	$bp = buddypress();

	$actions  = array();
	$selected = $item->type;

	// Walk through the registered actions, and build an array of actions/values.
	foreach ( bp_activity_get_actions() as $action ) {
		$action = array_values( (array) $action );

		for ( $i = 0, $i_count = count( $action ); $i < $i_count; $i++ )
			$actions[ $action[$i]['key'] ] = $action[$i]['value'];
	}

	// This was a mis-named activity type from before BP 1.6
	unset( $actions['friends_register_activity_action'] );

	// Sort array by the human-readable value
	natsort( $actions );

	// If the activity type is not registered properly (eg, a plugin has
	// not called bp_activity_set_action()), add the raw type to the end
	// of the list
	if ( ! isset( $actions[ $selected ] ) ) {
		_doing_it_wrong( __FUNCTION__, sprintf( __( 'This activity item has a type (%s) that is not registered using bp_activity_set_action(), so no label is available.', 'buddypress' ), $selected ), '2.0.0' );
		$actions[ $selected ] = $selected;
	}

	?>

	<select name="bp-activities-type">
		<?php foreach ( $actions as $k => $v ) : ?>
			<option value="<?php echo esc_attr( $k ); ?>" <?php selected( $k,  $selected ); ?>><?php echo esc_html( $v ); ?></option>
		<?php endforeach; ?>
	</select>

<?php
}

/**
 * Primary item ID/Secondary item ID metabox for the Activity admin edit screen.
 *
 * @since BuddyPress (1.6.0)
 *
 * @param object $item Activity item.
 */
function bp_activity_admin_edit_metabox_itemids( $item ) {
?>

	<label for="bp-activities-primaryid"><?php _e( 'Primary Item ID', 'buddypress' ); ?></label>
	<input type="number" name="bp-activities-primaryid" id="bp-activities-primaryid" value="<?php echo esc_attr( $item->item_id ); ?>" min="0" />
	<br />

	<label for="bp-activities-secondaryid"><?php _e( 'Secondary Item ID', 'buddypress' ); ?></label>
	<input type="number" name="bp-activities-secondaryid" id="bp-activities-secondaryid" value="<?php echo esc_attr( $item->secondary_item_id ); ?>" min="0" />

	<p><?php _e( 'These identify the object that created this activity. For example, the fields could reference a pair of site and comment IDs.', 'buddypress' ); ?></p>

<?php
}

/**
 * Display the Activity admin index screen, which contains a list of all the activities.
 *
 * @since BuddyPress (1.6.0)
 *
 * @global BP_Activity_List_Table $bp_activity_list_table Activity screen list table.
 * @global string                 $plugin_page            The current plugin page.
 */
function bp_activity_admin_index() {
	global $bp_activity_list_table, $plugin_page;

	$messages = array();

	// If the user has just made a change to an activity item, build status messages
	if ( ! empty( $_REQUEST['deleted'] ) || ! empty( $_REQUEST['spammed'] ) || ! empty( $_REQUEST['unspammed'] ) || ! empty( $_REQUEST['error'] ) || ! empty( $_REQUEST['updated'] ) ) {
		$deleted   = ! empty( $_REQUEST['deleted']   ) ? (int) $_REQUEST['deleted']   : 0;
		$errors    = ! empty( $_REQUEST['error']     ) ? $_REQUEST['error']           : '';
		$spammed   = ! empty( $_REQUEST['spammed']   ) ? (int) $_REQUEST['spammed']   : 0;
		$unspammed = ! empty( $_REQUEST['unspammed'] ) ? (int) $_REQUEST['unspammed'] : 0;
		$updated   = ! empty( $_REQUEST['updated']   ) ? (int) $_REQUEST['updated']   : 0;

		$errors = array_map( 'absint', explode( ',', $errors ) );

		// Make sure we don't get any empty values in $errors
		for ( $i = 0, $errors_count = count( $errors ); $i < $errors_count; $i++ ) {
			if ( 0 === $errors[$i] ) {
				unset( $errors[$i] );
			}
		}

		// Reindex array
		$errors = array_values( $errors );

		if ( $deleted > 0 )
			$messages[] = sprintf( _n( '%s activity item has been permanently deleted.', '%s activity items have been permanently deleted.', $deleted, 'buddypress' ), number_format_i18n( $deleted ) );

		if ( ! empty( $errors ) ) {
			if ( 1 == count( $errors ) ) {
				$messages[] = sprintf( __( 'An error occurred when trying to update activity ID #%s.', 'buddypress' ), number_format_i18n( $errors[0] ) );

			} else {
				$error_msg  = __( 'Errors occurred when trying to update these activity items:', 'buddypress' );
				$error_msg .= '<ul class="activity-errors">';

				// Display each error as a list item
				foreach ( $errors as $error ) {
					// Translators: This is a bulleted list of item IDs
					$error_msg .= '<li>' . sprintf( __( '#%s', 'buddypress' ), number_format_i18n( $error ) ) . '</li>';
				}

				$error_msg  .= '</ul>';
				$messages[] = $error_msg;
			}
		}

		if ( $spammed > 0 )
			$messages[] = sprintf( _n( '%s activity item has been successfully spammed.', '%s activity items have been successfully spammed.', $spammed, 'buddypress' ), number_format_i18n( $spammed ) );

		if ( $unspammed > 0 )
			$messages[] = sprintf( _n( '%s activity item has been successfully unspammed.', '%s activity items have been successfully unspammed.', $unspammed, 'buddypress' ), number_format_i18n( $unspammed ) );

		if ( $updated > 0 )
			$messages[] = __( 'The activity item has been updated successfully.', 'buddypress' );
	}

	// Prepare the activity items for display
	$bp_activity_list_table->prepare_items();

	/**
	 * Fires before edit form is displayed so plugins can modify the activity messages.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param array $messages Array of messages to display at top of page.
	 */
	do_action( 'bp_activity_admin_index', $messages ); ?>

	<div class="wrap">
		<?php screen_icon( 'buddypress-activity' ); ?>
		<h2>
			<?php if ( !empty( $_REQUEST['aid'] ) ) : ?>
				<?php printf( __( 'Activity related to ID #%s', 'buddypress' ), number_format_i18n( (int) $_REQUEST['aid'] ) ); ?>
			<?php else : ?>
				<?php _ex( 'Activity', 'Admin SWA page', 'buddypress' ); ?>
			<?php endif; ?>

			<?php if ( !empty( $_REQUEST['s'] ) ) : ?>
				<span class="subtitle"><?php printf( __( 'Search results for &#8220;%s&#8221;', 'buddypress' ), wp_html_excerpt( esc_html( stripslashes( $_REQUEST['s'] ) ), 50 ) ); ?></span>
			<?php endif; ?>
		</h2>

		<?php // If the user has just made a change to an activity item, display the status messages ?>
		<?php if ( !empty( $messages ) ) : ?>
			<div id="moderated" class="<?php echo ( ! empty( $_REQUEST['error'] ) ) ? 'error' : 'updated'; ?>"><p><?php echo implode( "<br/>\n", $messages ); ?></p></div>
		<?php endif; ?>

		<?php // Display each activity on its own row ?>
		<?php $bp_activity_list_table->views(); ?>

		<form id="bp-activities-form" action="" method="get">
			<?php $bp_activity_list_table->search_box( __( 'Search all Activity', 'buddypress' ), 'bp-activity' ); ?>
			<input type="hidden" name="page" value="<?php echo esc_attr( $plugin_page ); ?>" />
			<?php $bp_activity_list_table->display(); ?>
		</form>

		<?php // This markup is used for the reply form ?>
		<table style="display: none;">
			<tr id="bp-activities-container" style="display: none;">
				<td colspan="4">
					<form method="get" action="">

						<h5 id="bp-replyhead"><?php _e( 'Reply to Activity', 'buddypress' ); ?></h5>
						<?php wp_editor( '', 'bp-activities', array( 'dfw' => false, 'media_buttons' => false, 'quicktags' => array( 'buttons' => 'strong,em,link,block,del,ins,img,code,spell,close' ), 'tinymce' => false, ) ); ?>

						<p id="bp-replysubmit" class="submit">
							<a href="#" class="cancel button-secondary alignleft"><?php _e( 'Cancel', 'buddypress' ); ?></a>
							<a href="#" class="save button-primary alignright"><?php _e( 'Reply', 'buddypress' ); ?></a>

							<img class="waiting" style="display:none;" src="<?php echo esc_url( admin_url( 'images/wpspin_light.gif' ) ); ?>" alt="" />
							<span class="error" style="display:none;"></span>
							<br class="clear" />
						</p>

						<?php wp_nonce_field( 'bp-activity-admin-reply', '_ajax_nonce-bp-activity-admin-reply', false ); ?>

					</form>
				</td>
			</tr>
		</table>
	</div>

<?php
}

/**
 * List table class for the Activity component admin page.
 *
 * @since BuddyPress (1.6.0)
 */
class BP_Activity_List_Table extends WP_List_Table {

	/**
	 * What type of view is being displayed?
	 *
	 * e.g. "all", "pending", "approved", "spam"...
	 *
	 * @since BuddyPress (1.6.0)
	 * @var string
	 */
	public $view = 'all';

	/**
	 * How many activity items have been marked as spam.
	 *
	 * @since BuddyPress (1.6.0)
	 * @var int
	 */
	public $spam_count = 0;

	/**
	 * Store activity-to-user-ID mappings for use in the In Response To column.
	 *
	 * @since BuddyPress (1.6.0)
	 * @var array
	 */
	protected $activity_user_id = array();

	/**
	 * If users can comment on blog & forum activity items.
	 *
	 * @since BuddyPress (2.2.2)
	 *
	 * @link https://buddypress.trac.wordpress.org/ticket/6277
	 *
	 * @var bool
	 */
	public $disable_blogforum_comments = false;

	/**
	 * Constructor.
	 *
	 * @since BuddyPress (1.6.0)
	 */
	public function __construct() {

		// See if activity commenting is enabled for blog / forum activity items
		$this->disable_blogforum_comments = bp_disable_blogforum_comments();

		// Define singular and plural labels, as well as whether we support AJAX.
		parent::__construct( array(
			'ajax'     => false,
			'plural'   => 'activities',
			'singular' => 'activity',
			'screen'   => get_current_screen(),
		) );
	}

	/**
	 * Handle filtering of data, sorting, pagination, and any other data manipulation prior to rendering.
	 *
	 * @since BuddyPress (1.6.0)
	 */
	function prepare_items() {

		// Option defaults
		$filter           = array();
		$include_id       = false;
		$search_terms     = false;
		$sort             = 'DESC';
		$spam             = 'ham_only';

		// Set current page
		$page = $this->get_pagenum();

		// Set per page from the screen options
		$per_page = $this->get_items_per_page( str_replace( '-', '_', "{$this->screen->id}_per_page" ) );

		// Check if we're on the "Spam" view
		if ( !empty( $_REQUEST['activity_status'] ) && 'spam' == $_REQUEST['activity_status'] ) {
			$spam       = 'spam_only';
			$this->view = 'spam';
		}

		// Sort order
		if ( !empty( $_REQUEST['order'] ) && 'desc' != $_REQUEST['order'] )
			$sort = 'ASC';

		// Order by
		/*if ( !empty( $_REQUEST['orderby'] ) ) {
		}*/

		// Filter
		if ( !empty( $_REQUEST['activity_type'] ) )
			$filter = array( 'action' => $_REQUEST['activity_type'] );

		// Are we doing a search?
		if ( !empty( $_REQUEST['s'] ) )
			$search_terms = $_REQUEST['s'];

		// Check if user has clicked on a specific activity (if so, fetch only that, and any related, activity).
		if ( !empty( $_REQUEST['aid'] ) )
			$include_id = (int) $_REQUEST['aid'];

		// Get the spam total (ignoring any search query or filter)
		$spams = bp_activity_get( array(
			'display_comments' => 'stream',
			'show_hidden'      => true,
			'spam'             => 'spam_only',
			'count_total'      => 'count_query',
		) );
		$this->spam_count = $spams['total'];
		unset( $spams );

		// Get the activities from the database
		$activities = bp_activity_get( array(
			'display_comments' => 'stream',
			'filter'           => $filter,
			'in'               => $include_id,
			'page'             => $page,
			'per_page'         => $per_page,
			'search_terms'     => $search_terms,
			'show_hidden'      => true,
			//'sort'             => $sort,
			'spam'             => $spam,
			'count_total'      => 'count_query',
		) );

		// If we're viewing a specific activity, flatten all activities into a single array.
		if ( $include_id ) {
			$activities['activities'] = BP_Activity_List_Table::flatten_activity_array( $activities['activities'] );
			$activities['total']      = count( $activities['activities'] );

			// Sort the array by the activity object's date_recorded value
			usort( $activities['activities'], create_function( '$a, $b', 'return $a->date_recorded > $b->date_recorded;' ) );
		}

		// bp_activity_get returns an array of objects; cast these to arrays for WP_List_Table.
		$new_activities = array();
		foreach ( $activities['activities'] as $activity_item ) {
			$new_activities[] = (array) $activity_item;

			// Build an array of activity-to-user ID mappings for better efficiency in the In Response To column
			$this->activity_user_id[$activity_item->id] = $activity_item->user_id;
		}

		// Set raw data to display
		$this->items       = $new_activities;

		// Store information needed for handling table pagination
		$this->set_pagination_args( array(
			'per_page'    => $per_page,
			'total_items' => $activities['total'],
			'total_pages' => ceil( $activities['total'] / $per_page )
		) );

		// Don't truncate activity items; bp_activity_truncate_entry() needs to be used inside a BP_Activity_Template loop.
		remove_filter( 'bp_get_activity_content_body', 'bp_activity_truncate_entry', 5 );
	}

	/**
	 * Get an array of all the columns on the page.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @return array Column headers.
	 */
	function get_column_info() {
		$this->_column_headers = array(
			$this->get_columns(),
			array(),
			$this->get_sortable_columns(),
			$this->get_default_primary_column_name(),
		);

		return $this->_column_headers;
	}

	/**
	 * Display a message on screen when no items are found (e.g. no search matches).
	 *
	 * @since BuddyPress (1.6.0)
	 */
	function no_items() {
		_e( 'No activities found.', 'buddypress' );
	}

	/**
	 * Output the Activity data table.
	 *
	 * @since BuddyPress (1.6.0)
	*/
	function display() {
		$this->display_tablenav( 'top' ); ?>

		<table class="wp-list-table <?php echo implode( ' ', $this->get_table_classes() ); ?>" cellspacing="0">
			<thead>
				<tr>
					<?php $this->print_column_headers(); ?>
				</tr>
			</thead>

			<tfoot>
				<tr>
					<?php $this->print_column_headers( false ); ?>
				</tr>
			</tfoot>

			<tbody id="the-comment-list">
				<?php $this->display_rows_or_placeholder(); ?>
			</tbody>
		</table>
		<?php

		$this->display_tablenav( 'bottom' );
	}

	/**
	 * Generate content for a single row of the table.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param object $item The current item.
	 */
	function single_row( $item ) {
		static $even = false;

		if ( $even ) {
			$row_class = ' class="even"';
		} else {
			$row_class = ' class="alternate odd"';
		}

		if ( 'activity_comment' === $item['type'] ) {
			$root_id = $item['item_id'];
		} else {
			$root_id = $item['id'];
		}

		echo '<tr' . $row_class . ' id="activity-' . esc_attr( $item['id'] ) . '" data-parent_id="' . esc_attr( $item['id'] ) . '" data-root_id="' . esc_attr( $root_id ) . '">';
		echo $this->single_row_columns( $item );
		echo '</tr>';

		$even = ! $even;
	}

	/**
	 * Get the list of views available on this table (e.g. "all", "spam").
	 *
	 * @since BuddyPress (1.6.0)
	 */
	function get_views() {
		$url_base = add_query_arg( array( 'page' => 'bp-activity' ), bp_get_admin_url( 'admin.php' ) ); ?>

		<ul class="subsubsub">
			<li class="all"><a href="<?php echo esc_url( $url_base ); ?>" class="<?php if ( 'spam' != $this->view ) echo 'current'; ?>"><?php _e( 'All', 'buddypress' ); ?></a> |</li>
			<li class="spam"><a href="<?php echo esc_url( add_query_arg( array( 'activity_status' => 'spam' ), $url_base ) ); ?>" class="<?php if ( 'spam' == $this->view ) echo 'current'; ?>"><?php printf( __( 'Spam <span class="count">(%s)</span>', 'buddypress' ), number_format_i18n( $this->spam_count ) ); ?></a></li>

			<?php

			/**
			 * Fires inside listing of views so plugins can add their own.
			 *
			 * @since BuddyPress (1.6.0)
			 *
			 * @param string $url_base Current URL base for view.
			 * @param string $view     Current view being displayed.
			 */
			do_action( 'bp_activity_list_table_get_views', $url_base, $this->view ); ?>
		</ul>
	<?php
	}

	/**
	 * Get bulk actions.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @return array Key/value pairs for the bulk actions dropdown.
	 */
	function get_bulk_actions() {
		$actions = array();
		$actions['bulk_spam']   = __( 'Mark as Spam', 'buddypress' );
		$actions['bulk_ham']    = __( 'Not Spam', 'buddypress' );
		$actions['bulk_delete'] = __( 'Delete Permanently', 'buddypress' );

		/**
		 * Filters the default bulk actions so plugins can add custom actions.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param array $actions Default available actions for bulk operations.
		 */
		return apply_filters( 'bp_activity_list_table_get_bulk_actions', $actions );
	}

	/**
	 * Get the table column titles.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @see WP_List_Table::single_row_columns()
	 *
	 * @return array The columns to appear in the Activity list table.
	 */
	function get_columns() {
		return array(
			'cb'       => '<input name type="checkbox" />',
			'author'   => _x('Author', 'Admin SWA column header', 'buddypress' ),
			'comment'  => _x( 'Activity', 'Admin SWA column header', 'buddypress' ),
			'action'   => _x( 'Action', 'Admin SWA column header', 'buddypress' ),
			'response' => _x( 'In Response To', 'Admin SWA column header', 'buddypress' ),
		);
	}

	/**
	 * Get the column names for sortable columns.
	 *
	 * Currently, returns an empty array (no columns are sortable).
	 *
	 * @since BuddyPress (1.6.0)
	 * @todo For this to work, BP_Activity_Activity::get() needs updating
	 *       to support ordering by specific fields.
	 *
	 * @return array The columns that can be sorted on the Activity screen.
	 */
	function get_sortable_columns() {
		return array();

		/*return array(
			'author' => array( 'activity_author', false ),  // Intentionally not using "=>"
		);*/
	}

	/**
	 * Markup for the "filter" part of the form (i.e. which activity type to display).
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param string $which 'top' or 'bottom'.
	 */
	function extra_tablenav( $which ) {

		// Bail on bottom table nav
		if ( 'bottom' === $which ) {
			return;
		}

		// Is any filter currently selected?
		$selected = ( ! empty( $_REQUEST['activity_type'] ) ) ? $_REQUEST['activity_type'] : '';

		// Get the actions
		$activity_actions = bp_activity_get_actions(); ?>

		<div class="alignleft actions">
			<select name="activity_type">
				<option value="" <?php selected( ! $selected ); ?>><?php _e( 'View all actions', 'buddypress' ); ?></option>

				<?php foreach ( $activity_actions as $component => $actions ) : ?>

					<optgroup label="<?php echo ucfirst( $component ); ?>">

						<?php foreach ( $actions as $action_key => $action_values ) : ?>

							<?php

							// Skip the incorrectly named pre-1.6 action
							if ( 'friends_register_activity_action' !== $action_key ) : ?>

								<option value="<?php echo esc_attr( $action_key ); ?>" <?php selected( $action_key,  $selected ); ?>><?php echo esc_html( $action_values[ 'value' ] ); ?></option>

							<?php endif; ?>

						<?php endforeach; ?>

					</optgroup>

				<?php endforeach; ?>

			</select>

			<?php submit_button( __( 'Filter', 'buddypress' ), 'secondary', false, false, array( 'id' => 'post-query-submit' ) ); ?>
		</div>

	<?php
	}

	/**
	 * Override WP_List_Table::row_actions().
	 *
	 * Basically a duplicate of the row_actions() method, but removes the
	 * unnecessary <button> addition.
	 *
	 * @since 2.3.3
	 * @access protected
	 *
	 * @param array $actions The list of actions
	 * @param bool $always_visible Whether the actions should be always visible
	 * @return string
	 */
	protected function row_actions( $actions, $always_visible = false ) {
		$action_count = count( $actions );
		$i = 0;

		if ( !$action_count )
			return '';

		$out = '<div class="' . ( $always_visible ? 'row-actions visible' : 'row-actions' ) . '">';
		foreach ( $actions as $action => $link ) {
			++$i;
			( $i == $action_count ) ? $sep = '' : $sep = ' | ';
			$out .= "<span class='$action'>$link$sep</span>";
		}
		$out .= '</div>';

		return $out;
	}

	/**
	 * Checkbox column markup.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @see WP_List_Table::single_row_columns()
	 *
	 * @param array $item A singular item (one full row).
	 */
	function column_cb( $item ) {
		printf( '<label class="screen-reader-text" for="aid-%1$d">' . __( 'Select activity item %1$d', 'buddypress' ) . '</label><input type="checkbox" name="aid[]" value="%1$d" id="aid-%1$d" />', $item['id'] );
	}

	/**
	 * Author column markup.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @see WP_List_Table::single_row_columns()
	 *
	 * @param array $item A singular item (one full row).
	 */
	function column_author( $item ) {
		echo '<strong>' . get_avatar( $item['user_id'], '32' ) . ' ' . bp_core_get_userlink( $item['user_id'] ) . '</strong>';
	}

	/**
	 * Action column markup.
	 *
	 * @since BuddyPress (2.0.0)
	 *
	 * @see WP_List_Table::single_row_columns()
	 *
	 * @param array $item A singular item (one full row).
	 */
	function column_action( $item ) {
		$actions = bp_activity_admin_get_activity_actions();

		if ( isset( $actions[ $item['type'] ] ) ) {
			echo $actions[ $item['type'] ];
		} else {
			printf( __( 'Unregistered action - %s', 'buddypress' ), $item['type'] );
		}
	}

	/**
	 * Content column, and "quick admin" rollover actions.
	 *
	 * Called "comment" in the CSS so we can re-use some WP core CSS.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @see WP_List_Table::single_row_columns()
	 *
	 * @param array $item A singular item (one full row).
	 */
	function column_comment( $item ) {
		// Determine what type of item (row) we're dealing with
		if ( $item['is_spam'] )
			$item_status = 'spam';
		else
			$item_status = 'all';

		// Preorder items: Reply | Edit | Spam | Delete Permanently
		$actions = array(
			'reply'  => '',
			'edit'   => '',
			'spam'   => '', 'unspam' => '',
			'delete' => '',
		);

		// Build actions URLs
		$base_url   = bp_get_admin_url( 'admin.php?page=bp-activity&amp;aid=' . $item['id'] );
		$spam_nonce = esc_html( '_wpnonce=' . wp_create_nonce( 'spam-activity_' . $item['id'] ) );

		$delete_url = $base_url . "&amp;action=delete&amp;$spam_nonce";
		$edit_url   = $base_url . '&amp;action=edit';
		$ham_url    = $base_url . "&amp;action=ham&amp;$spam_nonce";
		$spam_url   = $base_url . "&amp;action=spam&amp;$spam_nonce";

		// Rollover actions

		// Reply - JavaScript only; implemented by AJAX.
		if ( 'spam' != $item_status ) {
			if ( $this->can_comment( $item ) ) {
				$actions['reply'] = sprintf( '<a href="#" class="reply hide-if-no-js">%s</a>', __( 'Reply', 'buddypress' ) );
			} else {
				$actions['reply'] = sprintf( '<span class="form-input-tip" title="%s">%s</span>', __( 'Replies are disabled for this activity item', 'buddypress' ), __( 'Replies disabled', 'buddypress' ) );
			}

			// Edit
			$actions['edit'] = sprintf( '<a href="%s">%s</a>', $edit_url, __( 'Edit', 'buddypress' ) );
		}

		// Spam/unspam
		if ( 'spam' == $item_status )
			$actions['unspam'] = sprintf( '<a href="%s">%s</a>', $ham_url, __( 'Not Spam', 'buddypress' ) );
		else
			$actions['spam'] = sprintf( '<a href="%s">%s</a>', $spam_url, __( 'Spam', 'buddypress' ) );

		// Delete
		$actions['delete'] = sprintf( '<a href="%s" onclick="%s">%s</a>', $delete_url, "javascript:return confirm('" . esc_js( __( 'Are you sure?', 'buddypress' ) ) . "'); ", __( 'Delete Permanently', 'buddypress' ) );

		// Start timestamp
		echo '<div class="submitted-on">';

		/**
		 * Filters available actions for plugins to alter.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param array $actions Array of available actions user could use.
		 * @param array $item    Current item being added to page.
		 */
		$actions = apply_filters( 'bp_activity_admin_comment_row_actions', array_filter( $actions ), $item );

		/* translators: 2: activity admin ui date/time */
		printf( __( 'Submitted on <a href="%1$s">%2$s at %3$s</a>', 'buddypress' ), bp_activity_get_permalink( $item['id'] ), get_date_from_gmt( $item['date_recorded'], get_option( 'date_format' ) ), get_date_from_gmt( $item['date_recorded'], get_option( 'time_format' ) ) );

		// End timestamp
		echo '</div>';

		// Get activity content - if not set, use the action
		if ( ! empty( $item['content'] ) ) {

			/**
			 * Filters current activity item content.
			 *
			 * @since BuddyPress (1.2.0)
			 *
			 * @param array $item Array index holding current activity item content.
			 */
			$content = apply_filters_ref_array( 'bp_get_activity_content_body', array( $item['content'] ) );
		} else {
			/**
			 * Filters current activity item action.
			 *
			 * @since BuddyPress (1.2.0)
			 *
			 * @var array $item Array index holding current activity item action.
			 */
			$content = apply_filters_ref_array( 'bp_get_activity_action', array( $item['action'] ) );
		}

		echo $content . ' ' . $this->row_actions( $actions );
	}

	/**
	 * "In response to" column markup.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @see WP_List_Table::single_row_columns()
	 *
	 * @param array $item A singular item (one full row).
	 */
	function column_response( $item ) {
		// Is $item is a root activity?

		/**
		 * Filters default list of default root activity types.
		 *
		 * @since BuddyPress (1.6.0)
		 *
		 * @param array $value Array of default activity types.
		 * @param array $item  Current item being displayed.
		 */
		if ( empty( $item['item_id'] ) || ! in_array( $item['type'], apply_filters( 'bp_activity_admin_root_activity_types', array( 'activity_comment' ), $item ) ) ) {
			$comment_count     = !empty( $item['children'] ) ? bp_activity_recurse_comment_count( (object) $item ) : 0;
			$root_activity_url = bp_get_admin_url( 'admin.php?page=bp-activity&amp;aid=' . $item['id'] );

			// If the activity has comments, display a link to the activity's permalink, with its comment count in a speech bubble
			if ( $comment_count ) {
				$title_attr = sprintf( _n( '%s related activity', '%s related activities', $comment_count, 'buddypress' ), number_format_i18n( $comment_count ) );
				printf( '<a href="%1$s" title="%2$s" class="post-com-count"><span class="comment-count">%3$s</span></a>', esc_url( $root_activity_url ), esc_attr( $title_attr ), number_format_i18n( $comment_count ) );
			}

		// For non-root activities, display a link to the replied-to activity's author's profile
		} else {
			echo '<strong>' . get_avatar( $this->get_activity_user_id( $item['item_id'] ), '32' ) . ' ' . bp_core_get_userlink( $this->get_activity_user_id( $item['item_id'] ) ) . '</strong><br />';
		}

		// Activity permalink
		if ( ! $item['is_spam'] )
			printf( __( '<a href="%1$s">View Activity</a>', 'buddypress' ), bp_activity_get_permalink( $item['id'], (object) $item ) );
	}

	/**
	 * Get the user id associated with a given activity item.
	 *
	 * Wraps bp_activity_get_specific(), with some additional logic for
	 * avoiding duplicate queries.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param int $activity_id Activity ID to retrieve User ID for.
	 *
	 * @return int User ID of the activity item in question.
	 */
	protected function get_activity_user_id( $activity_id ) {
		// If there is an existing activity/user ID mapping, just return the user ID.
		if ( ! empty( $this->activity_user_id[$activity_id] ) ) {
			return $this->activity_user_id[$activity_id];

		/**
		 * We don't have a mapping. This means the $activity_id is not on the current
		 * page of results, so fetch its details from the database.
		 */
		} else {
			$activity = bp_activity_get_specific( array( 'activity_ids' => $activity_id, 'show_hidden' => true, 'spam' => 'all', ) );

			/**
			 * If, somehow, the referenced activity has been deleted, leaving its associated
			 * activities as orphans, use the logged in user's ID to avoid errors.
			 */
			if ( empty( $activity['activities'] ) )
				return bp_loggedin_user_id();

			// Store the new activity/user ID mapping for any later re-use
			$this->activity_user_id[ $activity['activities'][0]->id ] = $activity['activities'][0]->user_id;

			// Return the user ID
			return $activity['activities'][0]->user_id;
		}
	}

	/**
	 * Checks if an activity item can be replied to.
	 *
	 * This method merges functionality from {@link bp_activity_can_comment()} and
	 * {@link bp_blogs_disable_activity_commenting()}. This is done because the activity
	 * list table doesn't use a BuddyPress activity loop, which prevents those
	 * functions from working as intended.
	 *
	 * @since BuddyPress (2.0.0)
	 *
	 * @param array $item An array version of the BP_Activity_Activity object.
	 *
	 * @return bool
	 */
	protected function can_comment( $item  ) {
		$can_comment = true;

		if ( $this->disable_blogforum_comments ) {
			switch ( $item['type'] ) {
				case 'new_blog_post' :
				case 'new_blog_comment' :
				case 'new_forum_topic' :
				case 'new_forum_post' :
					$can_comment = false;
					break;
			}

		// activity comments supported
		} else {
			// activity comment
			if ( 'activity_comment' == $item['type'] ) {
				// blogs
				if ( bp_is_active( 'blogs' ) ) {
					// grab the parent activity entry
					$parent_activity = new BP_Activity_Activity( $item['item_id'] );

					// fetch blog post comment depth and if the blog post's comments are open
					bp_blogs_setup_activity_loop_globals( $parent_activity );

					// check if the activity item can be replied to
					if ( false === bp_blogs_can_comment_reply( true, $item ) ) {
						$can_comment = false;
					}
				}

			// blog post
			} elseif ( 'new_blog_post' == $item['type'] ) {
				if ( bp_is_active( 'blogs' ) ) {
					bp_blogs_setup_activity_loop_globals( (object) $item );

					if ( empty( buddypress()->blogs->allow_comments[$item['id']] ) ) {
						$can_comment = false;
					}
				}
			}
		}

		/**
		 * Filters if an activity item can be commented on or not.
		 *
		 * @since BuddyPress (2.0.0)
		 *
		 * @param bool $can_comment Whether an activity item can be commented on or not.
		 */
		return apply_filters( 'bp_activity_list_table_can_comment', $can_comment );
	}

	/**
	 * Flatten the activity array.
	 *
	 * In some cases, BuddyPress gives us a structured tree of activity
	 * items plus their comments. This method converts it to a flat array.
	 *
	 * @since BuddyPress (1.6.0)
	 *
	 * @param array $tree Source array.
	 *
	 * @return array Flattened array.
	 */
	public static function flatten_activity_array( $tree ){
		foreach ( (array) $tree as $node ) {
			if ( isset( $node->children ) ) {

				foreach ( BP_Activity_List_Table::flatten_activity_array( $node->children ) as $child ) {
					$tree[] = $child;
				}

				unset( $node->children );
			}
		}

		return $tree;
	}

	/**
	 * Get name of default primary column
	 *
	 * @since BuddyPress (2.3.3)
	 * @access protected
	 *
	 * @return string
	 */
	protected function get_default_primary_column_name() {
		return 'author';
	}
}
