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<?php
/**
 * groups-admin-options.php
 *
 * Copyright (c) "kento" Karim Rahimpur www.itthinx.com
 *
 * This code is released under the GNU General Public License.
 * See COPYRIGHT.txt and LICENSE.txt.
 *
 * This code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * This header and all notices must be kept intact.
 *
 * @author Karim Rahimpur
 * @package groups
 * @since groups 1.0.0
 */

if ( !defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * @var string options form nonce name
 */
define( 'GROUPS_ADMIN_OPTIONS_NONCE', 'groups-admin-nonce' );

/**
 * Options admin screen.
 */
function groups_admin_options() {

global $wpdb, $wp_roles;

if ( !current_user_can( GROUPS_ADMINISTER_OPTIONS ) ) {
		wp_die( __( 'Access denied.', 'groups' ) );
	}

$is_sitewide_plugin = false;
	if ( is_multisite() ) {
		$active_sitewide_plugins = get_site_option( 'active_sitewide_plugins', array() );
		$active_sitewide_plugins = array_keys( $active_sitewide_plugins );
		$is_sitewide_plugin = in_array( 'groups/groups.php', $active_sitewide_plugins );
	}

$caps = array(
		GROUPS_ACCESS_GROUPS	  => __( 'Access Groups', 'groups' ),
		GROUPS_ADMINISTER_GROUPS  => __( 'Administer Groups', 'groups' ),
		GROUPS_ADMINISTER_OPTIONS => __( 'Administer Groups plugin options', 'groups' ),
		GROUPS_RESTRICT_ACCESS    => __( 'Restrict Access', 'groups' )
	);

$previous_legacy_enable =  Groups_Options::get_option( GROUPS_LEGACY_ENABLE, GROUPS_LEGACY_ENABLE_DEFAULT );

//
	// handle options form submission
	//
	if ( isset( $_POST['submit'] ) ) {
		if ( wp_verify_nonce( $_POST[GROUPS_ADMIN_OPTIONS_NONCE], 'admin' ) ) {

$post_types = get_post_types();
			$selected_post_types = !empty( $_POST['add_meta_boxes'] ) && is_array( $_POST['add_meta_boxes'] ) ? $_POST['add_meta_boxes'] : array();
			foreach( $post_types as $post_type ) {
				$handle_post_types[$post_type] = in_array( $post_type, $selected_post_types );
			}
			Groups_Post_Access::set_handles_post_types( $handle_post_types );

// tree view
			if ( !empty( $_POST[GROUPS_SHOW_TREE_VIEW] ) ) {
				Groups_Options::update_option( GROUPS_SHOW_TREE_VIEW, true );
			} else {
				Groups_Options::update_option( GROUPS_SHOW_TREE_VIEW, false );
			}

// show in user profiles
			Groups_Options::update_option( GROUPS_SHOW_IN_USER_PROFILE, !empty( $_POST[GROUPS_SHOW_IN_USER_PROFILE] ) );

// roles & capabilities
			$rolenames = $wp_roles->get_names();
			foreach ( $rolenames as $rolekey => $rolename ) {
				$role = $wp_roles->get_role( $rolekey );
				foreach ( $caps as $capkey => $capname ) {
					$role_cap_id = $rolekey.'-'.$capkey;
					if ( !empty($_POST[$role_cap_id] ) ) {
						$role->add_cap( $capkey );
					} else {
						$role->remove_cap( $capkey );
					}
				}
			}
			Groups_Controller::assure_capabilities();

if ( !$is_sitewide_plugin ) {
				// delete data
				if ( !empty( $_POST['delete-data'] ) ) {
					Groups_Options::update_option( 'groups_delete_data', true );
				} else {
					Groups_Options::update_option( 'groups_delete_data', false );
				}
			}

// legacy enable ?
			if ( !empty( $_POST[GROUPS_LEGACY_ENABLE] ) ) {
				Groups_Options::update_option( GROUPS_LEGACY_ENABLE, true );
			} else {
				Groups_Options::update_option( GROUPS_LEGACY_ENABLE, false );
			}

Groups_Admin::add_message( __( 'Options saved.', 'groups' ) );
		}
	}

echo '<div class="groups-options wrap">';

echo
		'<h1>' .
		__( 'Groups Options', 'groups' ) .
		'</h1>';

echo Groups_Admin::render_messages();

$show_tree_view = Groups_Options::get_option( GROUPS_SHOW_TREE_VIEW, GROUPS_SHOW_TREE_VIEW_DEFAULT );
	$show_in_user_profile = Groups_Options::get_option( GROUPS_SHOW_IN_USER_PROFILE, GROUPS_SHOW_IN_USER_PROFILE_DEFAULT );

$rolenames = $wp_roles->get_names();
	$caps_table = '<table class="groups-permissions">';
	$caps_table .= '<thead>';
	$caps_table .= '<tr>';
	$caps_table .= '<td class="role">';
	$caps_table .= __( 'Role', 'groups' );
	$caps_table .= '</td>';
	foreach ( $caps as $cap ) {
		$caps_table .= '<td class="cap">';
		$caps_table .= $cap;
		$caps_table .= '</td>';
	}

$caps_table .= '</tr>';
	$caps_table .= '</thead>';
	$caps_table .= '<tbody>';
	foreach ( $rolenames as $rolekey => $rolename ) {
		$role = $wp_roles->get_role( $rolekey );
		$caps_table .= '<tr>';
		$caps_table .= '<td>';
		$caps_table .= translate_user_role( $rolename );
		$caps_table .= '</td>';
		foreach ( $caps as $capkey => $capname ) {

if ( $role->has_cap( $capkey ) ) {
				$checked = ' checked="checked" ';
			} else {
				$checked = '';
			}

$caps_table .= '<td class="checkbox">';
			$role_cap_id = $rolekey.'-'.$capkey;
			$caps_table .= '<input type="checkbox" name="' . $role_cap_id . '" id="' . $role_cap_id . '" ' . $checked . '/>';
			$caps_table .= '</td>';
		}
		$caps_table .= '</tr>';
	}
	$caps_table .= '</tbody>';
	$caps_table .= '</table>';

$delete_data = Groups_Options::get_option( 'groups_delete_data', false );

if ( isset( $_GET['dismiss-groups-extensions-box'] ) && isset( $_GET['groups-extensions-box-nonce'] ) && wp_verify_nonce( $_GET['groups-extensions-box-nonce'], 'dismiss-box' ) ) {
		Groups_Options::update_user_option( 'show-extensions-box', false );
	}
	$extensions_box = '';
	if ( Groups_Options::get_user_option( 'show-extensions-box', true ) ) {
		$dismiss_url = wp_nonce_url( add_query_arg( 'dismiss-groups-extensions-box', '1', admin_url( 'admin.php?page=groups-admin-options' ) ), 'dismiss-box', 'groups-extensions-box-nonce' );
		$extensions_box =
			'<div id="groups-extensions-box">' .
			__( 'Enhanced functionality is available via official <a href="http://www.itthinx.com/shop/">Extensions</a> for Groups.', 'groups' ) .
			sprintf( '<a class="close" href="%s">x</a>', esc_url( $dismiss_url ) ) .
			'</div>';
	}

//
	// print the options form
	//
	echo
		'<form action="" name="options" method="post">' .
		'<div>' .

'<p>' .
		'<input class="button button-primary" type="submit" name="submit" value="' . __( 'Save', 'groups' ) . '"/>' .
		$extensions_box .
		'</p>';

if ( _groups_admin_override() ) {
		echo
			'<h2 style="color:red">' .
			__( 'Administrator Access Override', 'groups' ) .
			'</h2>' .
			'<p>' .
			 __( 'Administrators override all access permissions derived from Groups capabilities.', 'groups' ) .
			 '</p>' .
			 '<p>' .
			 __( 'To disable, do not define the constant <code>GROUPS_ADMINISTRATOR_OVERRIDE</code> or set it to <code>false</code>.', 'groups' ) .
			'</p>' .
			'<p>' .
			__( 'Enabling this on production sites is <strong>not</strong> recommended.', 'groups' ) .
			'</p>';
	}

echo '<h2>';
	echo __( 'Access restricions', 'groups' );
	echo '</h2>';

echo '<h3>';
	echo __( 'Post types', 'groups' );
	echo '</h3>';

echo '<p class="description">';
	echo __( 'Show access restrictions for these post types.', 'groups' ); // @todo change wording to '...handles access...' ?
	echo '</p>';

$post_type_objects = get_post_types( array(), 'objects' );
	uasort( $post_type_objects, 'groups_admin_options_compare_post_types' );

echo '<ul>';
	foreach( $post_type_objects as $post_type => $post_type_object ) {
		echo '<li>';
		echo '<label>';
		$label = $post_type;
		$labels = isset( $post_type_object->labels ) ? $post_type_object->labels : null;
		if ( ( $labels !== null ) && isset( $labels->singular_name ) ) {
			$label = __( $labels->singular_name );
		}
		$checked = Groups_Post_Access::handles_post_type( $post_type ) ? ' checked="checked" ' : '';
		echo '<input name="add_meta_boxes[]" type="checkbox" value="' . esc_attr( $post_type ) . '" ' . $checked . '/>';
		$is_public = isset( $post_type_object->public ) && $post_type_object->public;
		echo $is_public ? '<strong>' : '';
		echo esc_html( $label );
		echo $is_public ? '</strong>' : '';
		if ( $post_type != $label ) {
			echo ' ';
			echo '<code><small>';
			echo esc_html( $post_type );
			echo '</small></code>';
		}
		echo '</label>';
		echo '</li>';
	}
	echo '<ul>';
	echo
		'<p class="description">' .
		__( 'This determines for which post types access restriction settings are offered.', 'groups' ) . '<br/>' .
		__( 'Disabling this setting for a post type also disables existing access restrictions on individual posts of that type.', 'groups' ) . '<br/>' .
		'</p>';

echo
		'<h2>' . __( 'User profiles', 'groups' ) . '</h2>' .
		'<p>' .
		'<label>' .
		'<input name="' . GROUPS_SHOW_IN_USER_PROFILE . '" type="checkbox" ' . ( $show_in_user_profile ? 'checked="checked"' : '' ) . '/>' .
		__( 'Show groups in user profiles.', 'groups' ) .
		'</label>' .
		'</p>';

echo
		'<h2>' . __( 'Tree view', 'groups' ) . '</h2>' .
		'<p>' .
		'<label>' .
		'<input name="' . GROUPS_SHOW_TREE_VIEW . '" type="checkbox" ' . ( $show_tree_view ? 'checked="checked"' : '' ) . '/>' .
		__( 'Show the Groups tree view.', 'groups' ) .
		'</label>' .
		'</p>';

echo
		'<h2>' . __( 'Permissions', 'groups' ) . '</h2>' .
		'<p>' . __( 'These permissions apply to Groups management. They do not apply to access permissions derived from Groups capabilities.', 'groups' ) . '</p>' .
		$caps_table .
		'<p class="description">' .
		__( 'A minimum set of permissions will be preserved.', 'groups' ) .
		'<br/>' .
		__( 'If you lock yourself out, please ask an administrator to help.', 'groups' ) .
		'</p>';
	if ( !$is_sitewide_plugin ) {
		echo
			'<h2>' . __( 'Deactivation and data persistence', 'groups' ) . '</h2>' .
			'<p>' .
			'<label>' .
			'<input name="delete-data" type="checkbox" ' . ( $delete_data ? 'checked="checked"' : '' ) . '/>' .
			__( 'Delete all Groups plugin data on deactivation', 'groups' ) .
			'</label>' .
			'</p>' .
			'<p class="description warning">' .
			__( 'CAUTION: If this option is active while the plugin is deactivated, ALL plugin settings and data will be DELETED. If you are going to use this option, now would be a good time to make a backup. By enabling this option you agree to be solely responsible for any loss of data or any other consequences thereof.', 'groups' ) .
			'</p>';
	}

$groups_legacy_enable = Groups_Options::get_option( GROUPS_LEGACY_ENABLE, GROUPS_LEGACY_ENABLE_DEFAULT );
	echo '<h2>' . __( 'Legacy Settings', 'groups' ) . '</h2>';
	echo '<p>' .
		'<label>' .
		'<input name="' . GROUPS_LEGACY_ENABLE . '" type="checkbox" ' . ( $groups_legacy_enable ? 'checked="checked"' : '' ) . '/>' .
		__( 'Enable legacy access control based on capabilities.', 'groups' ) .
		'</label>' .
		'</p>';
	if ( $groups_legacy_enable ) {
		require_once GROUPS_LEGACY_LIB . '/admin/groups-admin-options-legacy.php';
		do_action( 'groups_admin_options_legacy', $groups_legacy_enable !== $previous_legacy_enable );
	}

echo
		'<p>' .
		wp_nonce_field( 'admin', GROUPS_ADMIN_OPTIONS_NONCE, true, false ) .
		'<input class="button button-primary" type="submit" name="submit" value="' . __( 'Save', 'groups' ) . '"/>' .
		'</p>' .
		'</div>' .
		'</form>';

echo '</div>'; // .groups-options
}

/**
 * Network administration options.
 */
function groups_network_admin_options() {

if ( !current_user_can( GROUPS_ADMINISTER_OPTIONS ) ) {
		wp_die( __( 'Access denied.', 'groups' ) );
	}

echo
		'<div>' .
		'<h1>' .
		__( 'Groups network options', 'groups' ) .
		'</h1>' .
		'</div>';

// handle options form submission
	if ( isset( $_POST['submit'] ) ) {
		if ( wp_verify_nonce( $_POST[GROUPS_ADMIN_OPTIONS_NONCE], 'admin' ) ) {
			// delete data
			if ( !empty( $_POST['delete-data'] ) ) {
				Groups_Options::update_option( 'groups_network_delete_data', true );
			} else {
				Groups_Options::update_option( 'groups_network_delete_data', false );
			}
		}
	}

$delete_data = Groups_Options::get_option( 'groups_network_delete_data', false );

// options form
	echo
		'<form action="" name="options" method="post">' .
		'<div>' .
		'<h2>' . __( 'Network deactivation and data persistence', 'groups' ) . '</h2>' .
		'<p>' .
		'<label>' .
		'<input name="delete-data" type="checkbox" ' . ( $delete_data ? 'checked="checked"' : '' ) . '/>' .
		' ' .
		__( 'Delete all Groups plugin data for ALL sites on network deactivation', 'groups' ) .
		'</label>' .
		'</p>' .
		'<p class="description warning">' .
		__( 'CAUTION: If this option is active while the plugin is deactivated, ALL plugin settings and data will be DELETED for <strong>all sites</strong>. If you are going to use this option, now would be a good time to make a backup. By enabling this option you agree to be solely responsible for any loss of data or any other consequences thereof.', 'groups' ) .
		'</p>' .
		'<p>' .
		wp_nonce_field( 'admin', GROUPS_ADMIN_OPTIONS_NONCE, true, false ) .
		'<input class="button button-primary" type="submit" name="submit" value="' . __( 'Save', 'groups' ) . '"/>' .
		'</p>' .
		'</div>' .
		'</form>';
}

/**
 * Compare two post types, considering those that have $public and/or $show_ui true as coming first.
 * @param object $o1
 * @param object $o2
 * @return int
 */
function groups_admin_options_compare_post_types( $o1, $o2 ) {
	$name_1 = isset( $o1->name ) ? $o1->name : '';
	$name_2 = isset( $o2->name ) ? $o2->name : '';
	$public_1 = isset( $o1->public ) && $o1->public;
	$public_2 = isset( $o2->public ) && $o2->public;
	$show_ui_1 = isset( $o1->show_ui ) && $o1->show_ui;
	$show_ui_2 = isset( $o2->show_ui ) && $o2->show_ui;
	$n1 = 0;
	$n2 = 0;
	if ( $public_1 ) {
		$n1--;
	}
	if ( $show_ui_1 ) {
		$n1--;
	}
	if ( $public_2 ) {
		$n2--;
	}
	if ( $show_ui_2 ) {
		$n2--;
	}
	return ( $n1 - $n2 ) * 10 + strcmp( $name_1, $name_2 );
}