<?php

/**
 * Class pw_new_user_approve_admin_approve
 * Admin must approve all new users
 */

class pw_new_user_approve_admin_approve {

	var $_admin_page = 'new-user-approve-admin';

	/**
	 * The only instance of pw_new_user_approve_admin_approve.
	 *
	 * @var pw_new_user_approve_admin_approve
	 */
	private static $instance;

	/**
	 * Returns the main instance.
	 *
	 * @return pw_new_user_approve_admin_approve
	 */
	public static function instance() {
		if ( !isset( self::$instance ) ) {
			self::$instance = new pw_new_user_approve_admin_approve();
		}
		return self::$instance;
	}

	private function __construct() {
		// Actions
		add_action( 'admin_menu', array( $this, 'admin_menu_link' ) );
		add_action( 'admin_init', array( $this, 'process_input' ) );
		add_action( 'admin_notices', array( $this, 'admin_notice' ) );
		add_action( 'admin_init', array( $this, 'notice_ignore' ) );
		add_action( 'admin_init', array( $this, '_add_meta_boxes' ) );
	}

	/**
	 * Add the new menu item to the users portion of the admin menu
	 *
	 * @uses admin_menu
	 */
	function admin_menu_link() {
		$show_admin_page = apply_filters( 'new_user_approve_show_admin_page', true );

		if ( $show_admin_page ) {
			$cap = apply_filters( 'new_user_approve_minimum_cap', 'edit_users' );
			$hook = add_users_page( __( 'Approve New Users', 'new-user-approve' ), __( 'Approve New Users', 'new-user-approve' ), $cap, $this->_admin_page, array( $this, 'approve_admin' ) );

			add_action( 'load-' . $hook, array( $this, 'admin_enqueue_scripts' ) );
		}
	}

	/**
	 * Create the view for the admin interface
	 */
	public function approve_admin() {
		require_once( pw_new_user_approve()->get_plugin_dir() . '/admin/templates/approve.php' );
	}

	/**
	 * Output the table that shows the registered users grouped by status
	 *
	 * @param string $status the filter to use for which the users will be queried. Possible values are pending, approved, or denied.
	 */
	public function user_table( $status ) {
		global $current_user;

		$approve = ( 'denied' == $status || 'pending' == $status );
		$deny = ( 'approved' == $status || 'pending' == $status );

		$user_status = pw_new_user_approve()->get_user_statuses();
		$users = $user_status[$status];

		if ( count( $users ) > 0 ) {
			?>
			<table class="widefat">
				<thead>
				<tr class="thead">
					<th><?php _e( 'Username', 'new-user-approve' ); ?></th>
					<th><?php _e( 'Name', 'new-user-approve' ); ?></th>
					<th><?php _e( 'E-mail', 'new-user-approve' ); ?></th>
					<?php if ( 'pending' == $status ) { ?>
						<th colspan="2"><?php _e( 'Actions', 'new-user-approve' ); ?></th>
					<?php } else { ?>
						<th><?php _e( 'Actions', 'new-user-approve' ); ?></th>
					<?php } ?>
				</tr>
				</thead>
				<tbody>
				<?php
				// show each of the users
				$row = 1;
				foreach ( $users as $user ) {
					$class = ( $row % 2 ) ? '' : ' class="alternate"';
					$avatar = get_avatar( $user->user_email, 32 );

					if ( $approve ) {
						$approve_link = get_option( 'siteurl' ) . '/wp-admin/users.php?page=' . $this->_admin_page . '&user=' . $user->ID . '&status=approve';
						if ( isset( $_REQUEST['tab'] ) )
							$approve_link = add_query_arg( array( 'tab' => esc_attr( $_REQUEST['tab'] ) ), $approve_link );
						$approve_link = wp_nonce_url( $approve_link, 'pw_new_user_approve_action_' . get_class( $this ) );
					}
					if ( $deny ) {
						$deny_link = get_option( 'siteurl' ) . '/wp-admin/users.php?page=' . $this->_admin_page . '&user=' . $user->ID . '&status=deny';
						if ( isset( $_REQUEST['tab'] ) )
							$deny_link = add_query_arg( 'tab', esc_attr( $_REQUEST['tab'] ), $deny_link );
						$deny_link = wp_nonce_url( $deny_link, 'pw_new_user_approve_action_' . get_class( $this ) );
					}

					if ( current_user_can( 'edit_user', $user->ID ) ) {
						if ( $current_user->ID == $user->ID ) {
							$edit_link = 'profile.php';
						} else {
							$edit_link = add_query_arg( 'wp_http_referer', urlencode( esc_url( stripslashes( $_SERVER['REQUEST_URI'] ) ) ), "user-edit.php?user_id=$user->ID" );
						}
						$edit = '<strong style="position: relative; top: -17px; left: 6px;"><a href="' . esc_url( $edit_link ) . '">' . esc_html( $user->user_login ) . '</a></strong>';
					} else {
						$edit = '<strong style="position: relative; top: -17px; left: 6px;">' . esc_html( $user->user_login ) . '</strong>';
					}

					?>
					<tr <?php echo $class; ?>>
					<td><?php echo $avatar . ' ' . $edit; ?></td>
					<td><?php echo get_user_meta( $user->ID, 'first_name', true ) . ' ' . get_user_meta( $user->ID, 'last_name', true ); ?></td>
					<td><a href="mailto:<?php echo $user->user_email; ?>"
						   title="<?php _e( 'email:', 'new-user-approve' ) ?> <?php echo $user->user_email; ?>"><?php echo $user->user_email; ?></a>
					</td>
					<?php if ( $approve && $user->ID != get_current_user_id() ) { ?>
						<td><a class="button-primary" href="<?php echo esc_url( $approve_link ); ?>"
											  title="<?php _e( 'Approve', 'new-user-approve' ); ?> <?php echo $user->user_login; ?>"><?php _e( 'Approve', 'new-user-approve' ); ?></a>
						</td>
					<?php } ?>
					<?php if ( $deny && $user->ID != get_current_user_id() ) { ?>
						<td><a class="button" href="<?php echo esc_url( $deny_link ); ?>"
											  title="<?php _e( 'Deny', 'new-user-approve' ); ?> <?php echo $user->user_login; ?>"><?php _e( 'Deny', 'new-user-approve' ); ?></a>
						</td>
					<?php } ?>
					<?php if ( $user->ID == get_current_user_id() ) : ?>
						<td colspan="2">&nbsp;</td>
					<?php endif; ?>
					</tr><?php
					$row++;
				}
				?>
				</tbody>
			</table>
		<?php
		} else {
			$status_i18n = $status;
			if ( $status == 'approved' ) {
				$status_i18n = __( 'approved', 'new-user-approve' );
			} else if ( $status == 'denied' ) {
				$status_i18n = __( 'denied', 'new-user-approve' );
			} else if ( $status == 'pending' ) {
				$status_i18n = __( 'pending', 'new-user-approve' );
			}

			echo '<p>' . sprintf( __( 'There are no users with a status of %s', 'new-user-approve' ), $status_i18n ) . '</p>';
		}
	}

	/**
	 * Accept input from admin to modify a user
	 *
	 * @uses init
	 */
	public function process_input() {
		if ( ( isset( $_GET['page'] ) && $_GET['page'] == $this->_admin_page ) && isset( $_GET['status'] ) ) {
			$valid_request = check_admin_referer( 'pw_new_user_approve_action_' . get_class( $this ) );

			if ( $valid_request ) {
				$status = sanitize_key( $_GET['status'] );
				$user_id = absint( $_GET['user'] );

				pw_new_user_approve()->update_user_status( $user_id, $status );
			}
		}
	}

	/**
	 * Display a notice on the legacy page that notifies the user of the new interface.
	 *
	 * @uses admin_notices
	 */
	public function admin_notice() {
		$screen = get_current_screen();

		if ( $screen->id == 'users_page_new-user-approve-admin' ) {
			$user_id = get_current_user_id();

			// Check that the user hasn't already clicked to ignore the message
			if ( !get_user_meta( $user_id, 'pw_new_user_approve_ignore_notice' ) ) {
				echo '<div class="updated"><p>';
				printf( __( 'You can now update user status on the <a href="%1$s">users admin page</a>. | <a href="%2$s">Hide Notice</a>', 'new-user-approve' ), admin_url( 'users.php' ), add_query_arg( array( 'new-user-approve-ignore-notice' => 1 ) ) );
				echo "</p></div>";
			}
		}
	}

	/**
	 * If user clicks to ignore the notice, add that to their user meta
	 *
	 * @uses admin_init
	 */
	public function notice_ignore() {
		if ( isset( $_GET['new-user-approve-ignore-notice'] ) && '1' == $_GET['new-user-approve-ignore-notice'] ) {
			$user_id = get_current_user_id();
			add_user_meta( $user_id, 'pw_new_user_approve_ignore_notice', '1', true );
		}
	}

	public function admin_enqueue_scripts() {
		wp_enqueue_script( 'post' );
	}

	public function _add_meta_boxes() {
		add_meta_box( 'nua-approve-admin', __( 'Approve Users', 'new-user-approve' ), array( $this, 'metabox_main' ), 'users_page_new-user-approve-admin', 'main', 'high' );
		add_meta_box( 'nua-updates', __( 'Updates', 'new-user-approve' ), array( $this, 'metabox_updates' ), 'users_page_new-user-approve-admin', 'side', 'default' );
		add_meta_box( 'nua-support', __( 'Support', 'new-user-approve' ), array( $this, 'metabox_support' ), 'users_page_new-user-approve-admin', 'side', 'default' );
		add_meta_box( 'nua-feedback', __( 'Feedback', 'new-user-approve' ), array( $this, 'metabox_feedback' ), 'users_page_new-user-approve-admin', 'side', 'default' );
	}

	public function metabox_main() {
		$active_tab = isset( $_GET['tab'] ) ? $_GET['tab'] : 'pending_users';
?>
		<h3 class="nav-tab-wrapper" style="padding-bottom: 0; border-bottom: none;">
			<a href="<?php echo esc_url( admin_url( 'users.php?page=new-user-approve-admin&tab=pending_users' ) ); ?>"
				class="nav-tab<?php echo $active_tab == 'pending_users' ? ' nav-tab-active' : ''; ?>"><span><?php _e( 'Users Pending Approval', 'new-user-approve' ); ?></span></a>
			<a href="<?php echo esc_url( admin_url( 'users.php?page=new-user-approve-admin&tab=approved_users' ) ); ?>"
			   class="nav-tab<?php echo $active_tab == 'approved_users' ? ' nav-tab-active' : ''; ?>"><span><?php _e( 'Approved Users', 'new-user-approve' ); ?></span></a>
			<a href="<?php echo esc_url( admin_url( 'users.php?page=new-user-approve-admin&tab=denied_users' ) ); ?>"
			   class="nav-tab<?php echo $active_tab == 'denied_users' ? ' nav-tab-active' : ''; ?>"><span><?php _e( 'Denied Users', 'new-user-approve' ); ?></span></a>
		</h3>

<?php if ( $active_tab == 'pending_users' ) : ?>
	<div id="pw_pending_users">
		<?php $this->user_table( 'pending' ); ?>
	</div>
<?php elseif ( $active_tab == 'approved_users' ) : ?>
	<div id="pw_approved_users">
		<?php $this->user_table( 'approved' ); ?>
	</div>
<?php
elseif ( $active_tab == 'denied_users' ) : ?>
	<div id="pw_denied_users">
		<?php $this->user_table( 'denied' ); ?>
	</div>
<?php endif;
	}

	public function metabox_updates() {
?>
		<p>I have created a site to help with the support of this plugin. Check it out at <a title="newuserapprove.com" href="https://newuserapprove.com/" target="_blank">newuserapprove.com</a>.</p>
		<p>Please signup for the mailing list to keep up to date.</p>

		<!-- Begin MailChimp Signup Form -->
		<div id="mc_embed_signup">
			<form id="mc-embedded-subscribe-form" class="validate" style="padding: 0;" action="//picklewagon.us2.list-manage.com/subscribe/post?u=a602ec75eeb3c876324a4c400&amp;id=11b386471b" method="post" name="mc-embedded-subscribe-form" novalidate="" target="_blank">
				<input id="mce-EMAIL" class="email" style="width: 100%;" name="EMAIL" required="" type="email" value="" placeholder="email address" />
				<input name="group[13117][4]" type="hidden" value="4" />
				<div style="position: absolute; left: -5000px;">
					<input tabindex="-1" name="b_a602ec75eeb3c876324a4c400_11b386471b" type="text" value="" />
				</div>
				<div class="clear" style="margin-top: 10px;">
					<input id="mc-embedded-subscribe" class="button" name="subscribe" type="submit" value="Subscribe" />
				</div>
			</form>
		</div>
<?php
	}

	public function metabox_support() {
?>
		<p>If you haven't already, check out the <a href="https://wordpress.org/plugins/new-user-approve/faq/" target="_blank">Frequently Asked Questions</a>.</p>
		<p>Still not fixed? Please <a href="https://wordpress.org/support/plugin/new-user-approve" target="_blank">start a support topic</a> and I or someone from the community will be able to assist you.</p>
<?php
	}

	public function metabox_feedback() {
?>
		<p>Please show your appreciation for New User Approve by giving it a positive <a href="https://wordpress.org/support/view/plugin-reviews/new-user-approve#postform" target="_blank">review</a> in the plugin repository!</p>
<?php
	}

}

function pw_new_user_approve_admin_approve() {
	return pw_new_user_approve_admin_approve::instance();
}

pw_new_user_approve_admin_approve();
