/**

* Setup and return the singleton pattern

*

* @since 1.0.0

*

* @uses BP_XProfile_Field_For_Member_Types::setup_actions()

* @return BP_XProfile_Field_For_Member_Types

*/

public static function instance() {

// Store the instance locally

static $instance = null;

if ( null === $instance ) {

$instance = new BP_XProfile_Field_For_Member_Types;

$instance->setup_globals();

$instance->setup_actions();

}

// Always return the instance

return $instance;

}

/**

* Setup plugin structure and hooks

*

* @since 1.0.0

*/

private function __construct() { /* Do nothing here */ }

/**

* Setup default class globals

*

* @since 1.0.0

*/

private function setup_globals() {

/** Version **************************************************/

$this->version = '1.0.1';

/** Plugin ***************************************************/

$this->file = __FILE__;

$this->basename = plugin_basename( $this->file );

$this->plugin_dir = plugin_dir_path( $this->file );

$this->plugin_url = plugin_dir_url( $this->file );

// Languages

$this->lang_dir = trailingslashit( $this->plugin_dir . 'languages' );

/** Misc *****************************************************/

$this->domain = 'bp-xprofile-field-for-member-types';

}

/**

* Setup default plugin actions and filters

*

* @since 1.0.0

*

* @uses bp_is_active() To check whether xprofile component is active

*/

private function setup_actions() {

// Require BP 2.2 and the XProfile component

if ( version_compare( buddypress()->version, '2.2', '<' ) || ! bp_is_active( 'xprofile' ) )

return;

// Plugin

add_action( 'init', array( $this, 'load_textdomain' ) );

// Main Logic

add_filter( 'bp_xprofile_get_hidden_fields_for_user', array( $this, 'filter_hidden_fields' ), 10, 3 );

// Metabox

add_action( 'xprofile_field_after_submitbox', array( $this, 'field_display_member_type_metabox' ) );

add_action( 'xprofile_field_after_save', array( $this, 'field_save_member_type_metabox' ) );

// Admin: Profile Fields

add_action( 'xprofile_admin_field_name_legend', array( $this, 'admin_field_legend' ) );

// Fire plugin loaded hook

do_action( 'bp_xprofile_field_for_member_types_loaded' );

}

/** Plugin ****************************************************************/

/**

* Load the translation file for current language

*

* Note that custom translation files inside the Plugin folder will

* be removed on Plugin updates. If you're creating custom translation

* files, please use the global language folder.

*

* @since 1.0.0

*

* @uses apply_filters() Calls 'plugin_locale' with {@link get_locale()} value

* @uses load_textdomain() To load the textdomain

* @uses load_plugin_textdomain() To load the plugin textdomain

*/

public function load_textdomain() {

// Traditional WordPress plugin locale filter

$locale = apply_filters( 'plugin_locale', get_locale(), $this->domain );

$mofile = sprintf( '%1$s-%2$s.mo', $this->domain, $locale );

// Setup paths to current locale file

$mofile_local = $this->lang_dir . $mofile;

$mofile_global = WP_LANG_DIR . '/bp-xprofile-field-for-member-types/' . $mofile;

// Look in global /wp-content/languages/bp-xprofile-field-for-member-types folder first

load_textdomain( $this->domain, $mofile_global );

// Look in global /wp-content/languages/plugins/ and local plugin languages folder

load_plugin_textdomain( $this->domain, false, 'bp-xprofile-field-for-member-types/languages' );

}

/** Main Logic ************************************************************/

/**

* Return the field ids that are not visible for the displayed and current user

*

* The displayed user must have a member type of the field in order to show the field.

* If the check fails, the field is added to the hidden fields collection.

*

* @since 1.0.0

*

* @param array $hidden_fields Hidden field ids

* @param int $displayed_user_id Displayed user ID

* @param int $current_user_id Loggedin user ID

* @return array Hidden field ids

*/

public function filter_hidden_fields( $hidden_fields, $displayed_user_id, $current_user_id ) {

global $wpdb, $bp;

// Hidden = All - Visible for displayed user AND current user

$all_fields = array_map( 'intval', (array) $wpdb->get_col( "SELECT id FROM {$bp->profile->table_name_fields}" ) );

foreach ( $all_fields as $k => $field_id ) {

// Is displayed user not a member? Remove field

if ( ! $this->has_user_field_member_type( $field_id, $displayed_user_id ) ) {

$hidden_fields[] = $field_id;

}

}

// Sanitize return value

$hidden_fields = array_unique( $hidden_fields );

return $hidden_fields;

}

/**

* Return whether the user has one of the field's member types

*

* @since 1.0.0

*

* @uses bp_displayed_user_id()

* @uses BP_XProfile_Field_For_Member_Types::get_xprofile_member_types()

* @uses bp_get_member_type()

*

* @param int|object $field_group_id Field ID or

* @param int $user_id Optional. User ID. Defaults to the displayed user.

* @return bool User has field's member type

*/

public function has_user_field_member_type( $field_id, $user_id = 0 ) {

// Get field ID

if ( is_object( $field_id ) ) {

$field_id = $field_id->id;

}

// The primary field is for all, so bail

if ( 1 === (int) $field_id )

return true;

// Default to displayed user

if ( ! is_numeric( $user_id ) ) {

$user_id = bp_displayed_user_id();

}

// Get the field's member types

if ( $member_types = $this->get_xprofile_member_types( $field_id, 'field' ) ) {

// Default to 'none' when the user has no member type(s)

if ( ! $u_member_types = bp_get_member_type( $user_id, false ) ) {

$u_member_types = array( 'none' );

}

// Validate user by the field's member types

$validate = array_intersect( $member_types, $u_member_types );

// Return whether we have any matches

return ! empty( $validate );

// No member types were assigned, so user validates

} else {

return true;

}

}

/** CRUD ******************************************************************/

/**

* Return a field's or group's assigned member types meta value

*

* @since 1.0.0

*

* @uses bp_xprofile_get_meta()

*

* @param int $object_id Field or group ID

* @param string $meta_type Type of meta, either 'field' or 'group'

* @return array Field or group member type names

*/

public function get_xprofile_member_types( $object_id, $meta_type ) {

// Get all meta instances of 'member-type' meta

$meta = bp_xprofile_get_meta( $object_id, $meta_type, 'member-type', false );

// Sanitize meta

if ( empty( $meta ) ) {

$meta = array();

}

return $meta;

}

/**

* Update a field's or group's member types meta value

*

* @since 1.0.0

*

* @uses BP_XProfile_Field_For_Member_Types::get_xprofile_member_types()

* @uses bp_xprofile_delete_meta()

* @uses bp_xprofile_add_meta()

*

* @param int $object_id Field or group ID

* @param string $meta_type Type of meta, either 'field' or 'group'

* @param array $selected_types Selected member type names

* @return bool Update success or failure

*/

public function update_xprofile_member_types( $object_id, $meta_type, $selected_types ) {

$current_types = $this->get_xprofile_member_types( $object_id, $meta_type );

// Delete unselected types

foreach ( $current_types as $type ) {

if ( ! in_array( $type, $selected_types ) ) {

bp_xprofile_delete_meta( $object_id, $meta_type, 'member-type', $type, false );

}

}

// Add new selected types

foreach ( $selected_types as $type ) {

if ( ! in_array( $type, $current_types ) ) {

bp_xprofile_add_meta( $object_id, $meta_type, 'member-type', $type, false );

}

}

return true;

}

/** Metabox ***************************************************************/

/**

* Output the metabox for field assigned member types

*

* Since BP 2.1.0.

*

* @since 1.0.0

*

* @param BP_XProfile_Field $field Current XProfile field

*/

public function field_display_member_type_metabox( $field ) {

// The primary field is for all, so bail

if ( 1 === (int) $field->id )

return;

// Bail when no member types are registered

if ( ! $member_types = bp_get_member_types( array(), 'objects' ) )

return;

// Get the field's member types

$obj_member_types = ! empty( $field->id ) ? $this->get_xprofile_member_types( $field->id, 'field' ) : array();

?>

<div id="for_member_types" class="postbox">

<h3><?php _e( 'Member Types', 'bp-xprofile-field-for-member-types' ); ?></h3>

<div class="inside">

<p class="description"><?php _e( 'To make this field exclusively available to users, select theirs from the following member types.', 'bp-xprofile-field-for-member-types' ); ?></p>

<ul>

<li>

<label>

<input name="member-types[]" type="checkbox" value="none" <?php checked( in_array( 'none', $obj_member_types ) ); ?>/>

<em><?php _e( 'No member type', 'bp-xprofile-field-for-member-types' ); ?></em>

</label>

</li>

<?php foreach ( $member_types as $member_type ) : ?>

<li>

<label>

<input name="member-types[]" type="checkbox" value="<?php echo $member_type->name; ?>" <?php checked( in_array( $member_type->name, $obj_member_types ) ); ?>/>

<?php echo $member_type->labels['singular_name']; ?>

</label>

</li>

<?php endforeach; ?>

</ul>

</div>

<?php wp_nonce_field( 'member-types', '_wpnonce_for_member_types' ); ?>

</div>

<?php

}

/**

* Save the metabox for field assigned member types

*

* @since 1.0.0

*

* @uses BP_Xprofile_For_Member_Types::update_xprofile_member_types()

*

* @param BP_XProfile_Field $field Saved XProfile field

*/

public function field_save_member_type_metabox( $field ) {

// Bail when nonce does not verify

if ( ! isset( $_REQUEST['_wpnonce_for_member_types'] ) || ! wp_verify_nonce( $_REQUEST['_wpnonce_for_member_types'], 'member-types' ) )

return;

/**

* The created field's id is unknown at this point. The following is a buggy fix

* while we're waiting on a fix for. Watch #BP6545 closely.

*/

if ( empty( $field->id ) ) {

global $wpdb;

$field->id = $wpdb->insert_id;

}

// Get posted values

$member_types = isset( $_REQUEST['member-types'] ) ? (array) $_REQUEST['member-types'] : array();

// Update changes

$this->update_xprofile_member_types( $field->id, 'field', $member_types );

}

/** Admin: Profile Fields *************************************************/

/**

* Display the selected member types per field on the Profile Fields screen

*

* @since 1.0.0

*

* @uses BP_XProfile_Field_For_Member_Types::get_xprofile_member_types()

* @uses bp_get_meber_types()

* @param BP_XProfile_Field $field Field object

*/

public function admin_field_legend( $field ) {

// Bail when the field has no member types

if ( ! $member_types = $this->get_xprofile_member_types( $field->id, 'field' ) )

return;

// Get selected type labels

$types = bp_get_member_types( array(), 'objects' );

$types = array_intersect_key( $types, array_flip( $member_types ) );

$types = wp_list_pluck( $types, 'labels' );

$types = wp_list_pluck( $types, 'singular_name' );

if ( in_array( 'none', $member_types ) ) {

/* translators: 'No member type' selection */

$types = array_merge( array( __( 'None', 'bp-xprofile-field-for-member-types' ) ), $types );

}

// Construct legend

$legend = sprintf( __( 'Member Types: %s', 'bp-xprofile-field-for-member-types' ), implode( ', ', $types ) );

// Output legend <span>

echo '<span class="member-types">(' . $legend . ')</span>';

}