<?php

/**
 * Renewal and Expiration Reminders Class
 *
 * @package     Restrict Content Pro
 * @subpackage  Admin/Reminders
 * @copyright   Copyright (c) 2017, Restrict Content Pro
 * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License
 * @since       2.9
 */
final class RCP_Reminders {

	/**
	 * Get things started
	 *
	 * @access public
	 * @since  2.9
	 * @return void
	 */
	public function __construct() {

	}

	/**
	 * Retrieve reminder notices periods
	 *
	 * @access public
	 * @since  2.9
	 * @return array reminder notice periods
	 */
	public function get_notice_periods() {

		$periods = array(
			'today'    => __( 'The day of the renewal/expiration', 'rcp' ),
			'+1day'    => __( 'One day before renewal/expiration', 'rcp' ),
			'+2days'   => __( 'Two days before renewal/expiration', 'rcp' ),
			'+3days'   => __( 'Three days before renewal/expiration', 'rcp' ),
			'+4days'   => __( 'Four days before renewal/expiration', 'rcp' ),
			'+5days'   => __( 'Five days before renewal/expiration', 'rcp' ),
			'+6days'   => __( 'Six days before renewal/expiration', 'rcp' ),
			'+1week'   => __( 'One week before renewal/expiration', 'rcp' ),
			'+2weeks'  => __( 'Two weeks before renewal/expiration', 'rcp' ),
			'+3weeks'  => __( 'Three weeks before renewal/expiration', 'rcp' ),
			'+1month'  => __( 'One month before renewal/expiration', 'rcp' ),
			'+2months' => __( 'Two months before renewal/expiration', 'rcp' ),
			'+3months' => __( 'Three months before renewal/expiration', 'rcp' ),
			'-1day'    => __( 'One day after expiration', 'rcp' ),
			'-2days'   => __( 'Two days after expiration', 'rcp' ),
			'-3days'   => __( 'Three days after expiration', 'rcp' ),
			'-1week'   => __( 'One week after expiration', 'rcp' ),
			'-2weeks'  => __( 'Two weeks after expiration', 'rcp' ),
			'-1month'  => __( 'One month after expiration', 'rcp' ),
			'-2months' => __( 'Two months after expiration', 'rcp' ),
			'-3months' => __( 'Three months after expiration', 'rcp' )
		);

		/**
		 * Filters the available notice periods.
		 *
		 * @param array $periods
		 *
		 * @since 2.9.8
		 */
		return apply_filters( 'rcp_reminder_notice_periods', $periods );

	}

	/**
	 * Retrieve the reminder label for a notice
	 *
	 * @param int $notice_id ID of the notice to get the label for.
	 *
	 * @access public
	 * @since  2.9
	 * @return String
	 */
	public function get_notice_period_label( $notice_id = 0 ) {

		$notice  = $this->get_notice( $notice_id );
		$periods = $this->get_notice_periods();
		$label   = $periods[ $notice['send_period'] ];

		return $label;

		//return apply_filters( 'rcp_reminder_notice_period_label', $label, $notice_id );

	}

	/**
	 * Retrieve reminder notices types
	 *
	 * @access public
	 * @since  2.9
	 * @return array reminder notice types
	 */
	public function get_notice_types() {

		$types = array(
			'renewal'    => __( 'Renewal', 'rcp' ),
			'expiration' => __( 'Expiration', 'rcp' ),
		);

		return $types;

		//return apply_filters( 'rcp_reminder_notice_types', $types );

	}

	/**
	 * Retrieve the reminder type label for a notice
	 *
	 * @param int $notice_id ID of the notice to get the label for.
	 *
	 * @access public
	 * @since  2.9
	 * @return String
	 */
	public function get_notice_type_label( $notice_id = 0 ) {

		$notice = $this->get_notice( $notice_id );
		$types  = $this->get_notice_types();
		$label  = $types[ $notice['type'] ];

		return $label;

		//return apply_filters( 'rcp_reminder_notice_type_label', $label, $notice_id );

	}

	/**
	 * Retrieve a reminder notice
	 *
	 * @param int $notice_id ID of the notice to retrieve.
	 *
	 * @access public
	 * @since  2.9
	 * @return array|false Reminder notice details or false if notice ID is invalid.
	 */
	public function get_notice( $notice_id = 0 ) {

		$notices = $this->get_notices();
		$notice  = isset( $notices[ $notice_id ] ) ? $notices[ $notice_id ] : false;

		return $notice;

		//return apply_filters( 'rcp_reminder_notice', $notice, $notice_id );

	}

	/**
	 * Retrieve reminder notice periods
	 *
	 * @param string $type Type of notices to get (renewal, expiration, or all).
	 *
	 * @access public
	 * @since  2.9
	 * @return array Reminder notices defined in settings
	 */
	public function get_notices( $type = 'all' ) {
		$notices = get_option( 'rcp_reminder_notices', array() );

		if ( $type != 'all' ) {

			$notices_hold = array();

			foreach ( $notices as $key => $notice ) {

				if ( $notice['type'] == $type ) {
					$notices_hold[ $key ] = $notice;
				}

			}

			$notices = $notices_hold;

		}

		return $notices;

		//return apply_filters( 'rcp_reminder_notices', $notices, $type );
	}

	/**
	 * Retrieve the default notice settings
	 *
	 * @param string $type Notice type to retrieve, either 'renewal' or 'expiration'.
	 *
	 * @access public
	 * @since  2.9
	 * @return array
	 */
	public function get_default_notice( $type = 'renewal' ) {

		$settings = array(
			'send_period' => '+1month',
			'enabled'     => false
		);

		if ( 'expiration' == $type ) {

			// Expiration notice
			$settings['type']    = 'expiration';
			$settings['subject'] = __( 'Your Subscription is About to Expire', 'rcp' );

			$settings['message'] = 'Hello %name%,

Your subscription for %subscription_name% will expire on %expiration%.';

		} else {

			// Renewal notice
			$settings['type']    = 'renewal';
			$settings['subject'] = __( 'Your Subscription is About to Renew', 'rcp' );

			$settings['message'] = 'Hello %name%,

Your subscription for %subscription_name% will renew on %expiration%.';

		}

		return $settings;

	}

	/**
	 * Send reminder emails
	 *
	 * @access public
	 * @since  2.9
	 * @return void
	 */
	public function send_reminders() {

		do_action( 'rcp_after_send_reminder_emails', $this );

	}

	/**
	 * Retrieve all members to send notices to
	 *
	 * @param string       $period Reminder period.
	 * @param string       $type   Type of notice to get the subscriptions for (renewal or expiration).
	 * @param string|array $levels Membership level ID(s) to filter by.
	 *
	 * @access public
	 * @since  2.9
	 * @return RCP_Membership[]|false Subscribers whose subscriptions are renewing or expiring within the defined period. False if
	 *                     none are found.
	 */
	public function get_reminder_subscriptions( $period = '+1month', $type = 'renewal', $levels = 'all' ) {

		if ( ! $type ) {
			return false;
		}

		$args = array(
			'number' => 9999,
		);

		// Filter by membership level.
		if ( is_array( $levels ) && count( $levels ) > 1 ) {
			$args['object_id__in'] = $levels;
		} elseif ( is_array( $levels ) && count( $levels ) === 1 ) {
			$args['object_id'] = $levels[0];
		}

		switch ( $type ) {

			case 'renewal' :
				$args['status']          = 'active';
				$args['auto_renew']      = 1;
				$args['expiration_date_query'] = array(
					'after'     => date( 'Y-m-d H:i:s', strtotime( $period . ' midnight', current_time( 'timestamp' ) ) ),
					'before'    => date( 'Y-m-d H:i:s', strtotime( $period . ' midnight', current_time( 'timestamp' ) ) + ( DAY_IN_SECONDS - 1 ) ),
					'inclusive' => true
				);
				break;

			case 'expiration' :
				$args['auto_renew'] = 0;

				if ( 0 === strpos( $period, '-' ) ) {
					$args['status__in'] = array( 'expired', 'cancelled' ); // If after expiration, their status may be expired.
				} else {
					$args['status__in'] = array( 'active', 'cancelled' );
				}

				$args['expiration_date_query'] = array(
					'after'     => date( 'Y-m-d H:i:s', strtotime( $period . ' midnight', current_time( 'timestamp' ) ) ),
					'before'    => date( 'Y-m-d H:i:s', strtotime( $period . ' midnight', current_time( 'timestamp' ) ) + ( DAY_IN_SECONDS - 1 ) ),
					'inclusive' => true
				);
				break;

		}

		/**
		 * Filters the membership query arguments for getting relevant subscriptions.
		 *
		 * @param array  $args   Query arguments.
		 * @param string $period Reminder period.
		 * @param string $type   Type of notice to get the subscriptions for (renewal or expiration).
		 *
		 * @since 2.9.2
		 */
		$args = apply_filters( 'rcp_reminder_subscription_args', $args, $period, $type );

		/*
		 * Backwards compatibility for making this snippet still work:
		 * https://github.com/restrictcontentpro/library/blob/master/rcp-limit-reminders-to-level.php
		 */
		if ( isset( $args['meta_query'] ) ) {
			$args = $this->convert_user_meta_query_args( $args );
		}

		$memberships = rcp_get_memberships( $args );

		if ( ! empty( $memberships ) ) {
			return $memberships;
		}

		return false;

	}

	/**
	 * Convert old WP_User_Query args into an appropriate format for a memberships custom table query.
	 *
	 * @todo Consider adding support for more meta keys.
	 *
	 * @param array $args
	 *
	 * @access private
	 * @since 3.0
	 * @return array
	 */
	private function convert_user_meta_query_args( $args ) {

		if ( ! isset( $args['meta_query'] ) || ! is_array( $args['meta_query'] ) ) {
			return $args;
		}

		$meta_query = $args['meta_query'];

		unset( $args['meta_query'] );

		foreach ( $meta_query as $query ) {
			switch ( $query['key'] ) {
				case 'rcp_subscription_level' :
					$args['object_id'] = absint( $query['value'] );
					break;
			}
		}

		return $args;

	}

	/**
	 * Setup and send test email for a reminder
	 *
	 * @param int $notice_id ID of the notice to test.
	 *
	 * @access public
	 * @since  2.9
	 * @return void
	 */
	public function send_test_notice( $notice_id = 0 ) {

		$notice = $this->get_notice( $notice_id );
		$emails = new RCP_Emails;

		$current_user = wp_get_current_user();
		$email_to     = $current_user->user_email;
		$message      = ! empty( $notice['message'] ) ? $notice['message'] : __( "**THIS IS A DEFAULT TEST MESSAGE - Notice message was not retrieved.**\n\nHello %name%,\n\nYour subscription for %subscription_name% will renew or expire on %expiration%.", 'rcp' );
		$message      = $this->filter_test_notice( $message );
		$subject      = ! empty( $notice['subject'] ) ? $notice['subject'] : __( 'Default Subject Message - Your Subscription is About to Renew or Expire', 'rcp' );
		$subject      = $this->filter_test_notice( $subject );

		$emails->member_id = $current_user->ID;
		$emails->send( $email_to, stripslashes( $subject ), $message );

	}

	/**
	 * Filter template tags for test email.
	 *
	 * @param string $text
	 *
	 * @access public
	 * @since  2.9
	 * @return string
	 */
	public function filter_test_notice( $text = '' ) {

		$text = str_replace( '%name%', 'NAME GOES HERE', $text );
		$text = str_replace( '%subscription_name%', 'SUBSCRIPTION NAME', $text );
		$text = str_replace( '%expiration%', date( 'F j, Y', strtotime( 'today' ) ), $text );

		return $text;

	}

}