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<?php

namespace WPMailSMTP;

/**
 * Awesome Motive Notifications
 *
 * This creates a custom post type (if it doesn't exist) and calls the API to
 * retrieve notifications for this product.
 *
 * @package    AwesomeMotive
 * @author     AwesomeMotive Team
 * @license    GPL-2.0+
 * @copyright  Copyright (c) 2018, Awesome Motive LLC
 * @version    1.0.7
 */
class AM_Notification {

	/**
	 * The api url we are calling.
	 *
	 * @since 1.0.0
	 *
	 * @var string
	 */
	public $api_url = 'https://api.awesomemotive.com/v1/notification/';

	/**
	 * A unique slug for this plugin.
	 * (Not the WordPress plugin slug)
	 *
	 * @since 1.0.0
	 *
	 * @var string
	 */
	public $plugin;

	/**
	 * The current plugin version.
	 *
	 * @since 1.0.0
	 *
	 * @var string
	 */
	public $plugin_version;

	/**
	 * Flag if a notice has been registered.
	 *
	 * @since 1.0.0
	 *
	 * @var bool
	 */
	public static $registered = false;

	/**
	 * Construct.
	 *
	 * @since 1.0.0
	 *
	 * @param string $plugin The plugin slug.
	 * @param mixed $version The version of the plugin.
	 */
	public function __construct( $plugin = '', $version = 0 ) {
		$this->plugin         = $plugin;
		$this->plugin_version = $version;

		add_action( 'init', array( $this, 'custom_post_type' ) );
		add_action( 'admin_init', array( $this, 'get_remote_notifications' ), 100 );
		add_action( 'admin_notices', array( $this, 'display_notifications' ) );
		add_action( 'wp_ajax_am_notification_dismiss', array( $this, 'dismiss_notification' ) );
	}

	/**
	 * Registers a custom post type.
	 *
	 * @since 1.0.0
	 */
	public function custom_post_type() {
		register_post_type( 'amn_' . $this->plugin, array(
			'label'           => $this->plugin . ' Announcements',
			'can_export'      => false,
			'supports'        => false,
			'capability_type' => 'manage_options',
		) );
	}

	/**
	 * Retrieve the remote notifications if the time has expired.
	 *
	 * @since 1.0.0
	 */
	public function get_remote_notifications() {
		if ( ! apply_filters( 'am_notifications_display', is_super_admin() ) ) {
			return;
		}

		$last_checked = get_option( '_amn_' . $this->plugin . '_last_checked', strtotime( '-1 week' ) );

		if ( $last_checked < strtotime( 'today midnight' ) ) {
			$plugin_notifications = $this->get_plugin_notifications( 1 );
			$notification_id      = null;

			if ( ! empty( $plugin_notifications ) ) {
				// Unset it from the array.
				$notification    = $plugin_notifications[0];
				$notification_id = get_post_meta( $notification->ID, 'notification_id', true );
			}

			$response = wp_remote_retrieve_body( wp_remote_post( $this->api_url, array(
				'body' => array(
					'slug'              => $this->plugin,
					'version'           => $this->plugin_version,
					'last_notification' => $notification_id,
				),
			) ) );

			$data = json_decode( $response );

			if ( ! empty( $data->id ) ) {
				$notifications = array();

				foreach ( (array) $data->slugs as $slug ) {
					$notifications = array_merge(
						$notifications,
						(array) get_posts(
							array(
								'post_type'   => 'amn_' . $slug,
								'post_status' => 'all',
								'meta_key'    => 'notification_id',
								'meta_value'  => $data->id,
							)
						)
					);
				}

				if ( empty( $notifications ) ) {
					$new_notification_id = wp_insert_post(
						array(
							'post_content' => wp_kses_post( $data->content ),
							'post_type'    => 'amn_' . $this->plugin,
						)
					);

					update_post_meta( $new_notification_id, 'notification_id', absint( $data->id ) );
					update_post_meta( $new_notification_id, 'type', sanitize_text_field( trim( $data->type ) ) );
					update_post_meta( $new_notification_id, 'dismissable', (bool) $data->dismissible ? 1 : 0 );
					update_post_meta( $new_notification_id, 'location', function_exists( 'wp_json_encode' ) ? wp_json_encode( $data->location ) : json_encode( $data->location ) );
					update_post_meta( $new_notification_id, 'version', sanitize_text_field( trim( $data->version ) ) );
					update_post_meta( $new_notification_id, 'viewed', 0 );
					update_post_meta( $new_notification_id, 'expiration', $data->expiration ? absint( $data->expiration ) : false );
					update_post_meta( $new_notification_id, 'plans', function_exists( 'wp_json_encode' ) ? wp_json_encode( $data->plans ) : json_encode( $data->plans ) );
				}
			}

			// Possibly revoke notifications.
			if ( ! empty( $data->revoked ) ) {
				$this->revoke_notifications( $data->revoked );
			}

			// Set the option now so we can't run this again until after 24 hours.
			update_option( '_amn_' . $this->plugin . '_last_checked', strtotime( 'today midnight' ) );
		}
	}

	/**
	 * Get local plugin notifications that have already been set.
	 *
	 * @since 1.0.0
	 *
	 * @param  integer $limit Set the limit for how many posts to retrieve.
	 * @param  array $args Any top-level arguments to add to the array.
	 *
	 * @return \WP_Post[] WP_Post that match the query.
	 */
	public function get_plugin_notifications( $limit = - 1, $args = array() ) {
		return get_posts(
			array(
				'posts_per_page' => $limit,
				'post_type'      => 'amn_' . $this->plugin,
			) + $args
		);
	}

	/**
	 * Display any notifications that should be displayed.
	 *
	 * @since 1.0.0
	 */
	public function display_notifications() {
		if ( ! apply_filters( 'am_notifications_display', is_super_admin() ) ) {
			return;
		}

		$plugin_notifications = $this->get_plugin_notifications( - 1, array(
			'post_status' => 'all',
			'meta_key'    => 'viewed',
			'meta_value'  => '0',
		) );

		$plugin_notifications = $this->validate_notifications( $plugin_notifications );

		if ( ! empty( $plugin_notifications ) && ! self::$registered ) {
			foreach ( $plugin_notifications as $notification ) {
				$dismissable = get_post_meta( $notification->ID, 'dismissable', true );
				$type        = get_post_meta( $notification->ID, 'type', true );
				?>
				<div class="am-notification am-notification-<?php echo absint( $notification->ID ); ?> notice notice-<?php echo esc_attr( $type ); ?><?php echo $dismissable ? ' is-dismissible' : ''; ?>">
					<?php echo wp_kses_post( $notification->post_content ); ?>
				</div>
				<script type="text/javascript">
					jQuery( document ).ready( function ( $ ) {
						$( document ).on( 'click', '.am-notification-<?php echo absint( $notification->ID ); ?> button.notice-dismiss', function ( event ) {
							$.post( ajaxurl, {
								action: 'am_notification_dismiss',
								notification_id: '<?php echo absint( $notification->ID ); ?>'
							} );
						} );
					} );
				</script>
				<?php
			}

			self::$registered = true;
		}
	}

	/**
	 * Validate the notifications before displaying them.
	 *
	 * @since 1.0.0
	 *
	 * @param  array $plugin_notifications An array of plugin notifications.
	 *
	 * @return array                       A filtered array of plugin notifications.
	 */
	public function validate_notifications( $plugin_notifications ) {
		global $pagenow;

		foreach ( $plugin_notifications as $key => $notification ) {
			// Location validation.
			$location = (array) json_decode( get_post_meta( $notification->ID, 'location', true ) );
			$continue = false;
			if ( ! in_array( 'everywhere', $location, true ) ) {
				if ( in_array( 'index.php', $location, true ) && 'index.php' === $pagenow ) {
					$continue = true;
				}

				if ( in_array( 'plugins.php', $location, true ) && 'plugins.php' === $pagenow ) {
					$continue = true;
				}

				if ( ! $continue ) {
					unset( $plugin_notifications[ $key ] );
				}
			}

			// Plugin validation (OR conditional).
			$plugins  = (array) json_decode( get_post_meta( $notification->ID, 'plugins', true ) );
			$continue = false;
			if ( ! empty( $plugins ) ) {
				foreach ( $plugins as $plugin ) {
					if ( is_plugin_active( $plugin ) ) {
						$continue = true;
					}
				}

				if ( ! $continue ) {
					unset( $plugin_notifications[ $key ] );
				}
			}

			// Theme validation.
			$theme    = get_post_meta( $notification->ID, 'theme', true );
			$continue = (string) wp_get_theme() === $theme;

			if ( ! empty( $theme ) && ! $continue ) {
				unset( $plugin_notifications[ $key ] );
			}

			// Version validation.
			$version  = get_post_meta( $notification->ID, 'version', true );
			$continue = false;
			if ( ! empty( $version ) ) {
				if ( version_compare( $this->plugin_version, $version, '<=' ) ) {
					$continue = true;
				}

				if ( ! $continue ) {
					unset( $plugin_notifications[ $key ] );
				}
			}

			// Expiration validation.
			$expiration = get_post_meta( $notification->ID, 'expiration', true );
			$continue   = false;
			if ( ! empty( $expiration ) ) {
				if ( $expiration > time() ) {
					$continue = true;
				}

				if ( ! $continue ) {
					unset( $plugin_notifications[ $key ] );
				}
			}

			// Plan validation.
			$plans    = (array) json_decode( get_post_meta( $notification->ID, 'plans', true ) );
			$continue = false;
			if ( ! empty( $plans ) ) {
				$level = $this->get_plan_level();
				if ( in_array( $level, $plans, true ) ) {
					$continue = true;
				}

				if ( ! $continue ) {
					unset( $plugin_notifications[ $key ] );
				}
			}
		}

		return $plugin_notifications;
	}

	/**
	 * Grab the current plan level.
	 *
	 * @since 1.0.0
	 *
	 * @return string The current plan level.
	 */
	public function get_plan_level() {
		// Prepare variables.
		$key   = '';
		$level = '';

		switch ( $this->plugin ) {
			case 'wpforms':
				$option = get_option( 'wpforms_license' );
				$key    = is_array( $option ) && isset( $option['key'] ) ? $option['key'] : '';
				$level  = is_array( $option ) && isset( $option['type'] ) ? $option['type'] : '';

				// Possibly check for a constant.
				if ( empty( $key ) && defined( 'WPFORMS_LICENSE_KEY' ) ) {
					$key = WPFORMS_LICENSE_KEY;
				}
				break;
			case 'mi-lite':
			case 'mi':
				if ( defined( 'MONSTERINSIGHTS_VERSION' ) && version_compare( MONSTERINSIGHTS_VERSION, '6.9.0', '>=' ) ) {
					if ( \MonsterInsights()->license->get_site_license_type() ) {
						$key  = \MonsterInsights()->license->get_site_license_key();
						$type = \MonsterInsights()->license->get_site_license_type();
					} else if ( \MonsterInsights()->license->get_network_license_type() ) {
						$key  = \MonsterInsights()->license->get_network_license_key();
						$type = \MonsterInsights()->license->get_network_license_type();
					}

					// Check key fallbacks.
					if ( empty( $key ) ) {
						$key = \MonsterInsights()->license->get_license_key();
					}
				} else {
					$option = get_option( 'monsterinsights_license' );
					$key    = is_array( $option ) && isset( $option['key'] ) ? $option['key'] : '';
					$level  = is_array( $option ) && isset( $option['type'] ) ? $option['type'] : '';

					// Possibly check for a constant.
					if ( empty( $key ) && defined( 'MONSTERINSIGHTS_LICENSE_KEY' ) && is_string( MONSTERINSIGHTS_LICENSE_KEY ) && strlen( MONSTERINSIGHTS_LICENSE_KEY ) > 10 ) {
						$key = MONSTERINSIGHTS_LICENSE_KEY;
					}
				}
				break;
			case 'om':
				$option = get_option( 'optin_monster_api' );
				$key    = is_array( $option ) && isset( $option['api']['apikey'] ) ? $option['api']['apikey'] : '';

				// Possibly check for a constant.
				if ( empty( $key ) && defined( 'OPTINMONSTER_REST_API_LICENSE_KEY' ) ) {
					$key = OPTINMONSTER_REST_API_LICENSE_KEY;
				}

				// If the key is still empty, check for the old legacy key.
				if ( empty( $key ) ) {
					$key = is_array( $option ) && isset( $option['api']['key'] ) ? $option['api']['key'] : '';
				}
				break;
		}

		// Possibly set the level to 'none' if the key is empty and no level has been set.
		if ( empty( $key ) && empty( $level ) ) {
			$level = 'none';
		}

		// Possibly set the level to 'unknown' if a key is entered, but no level can be determined (such as manually entered key).
		if ( ! empty( $key ) && empty( $level ) ) {
			$level = 'unknown';
		}

		// Normalize the level.
		switch ( $level ) {
			case 'bronze':
			case 'personal':
				$level = 'basic';
				break;
			case 'silver':
			case 'multi':
				$level = 'plus';
				break;
			case 'gold':
			case 'developer':
				$level = 'pro';
				break;
			case 'platinum':
			case 'master':
				$level = 'ultimate';
				break;
		}

		// Return the plan level.
		return $level;
	}

	/**
	 * Dismiss the notification via AJAX.
	 *
	 * @since 1.0.0
	 */
	public function dismiss_notification() {
		if ( ! apply_filters( 'am_notifications_display', is_super_admin() ) ) {
			die;
		}

		$notification_id = intval( $_POST['notification_id'] );
		update_post_meta( $notification_id, 'viewed', 1 );
		die;
	}

	/**
	 * Revokes notifications.
	 *
	 * @since 1.0.0
	 *
	 * @param array $ids An array of notification IDs to revoke.
	 */
	public function revoke_notifications( $ids ) {
		// Loop through each of the IDs and find the post that has it as meta.
		foreach ( (array) $ids as $id ) {
			$notifications = $this->get_plugin_notifications( - 1, array( 'post_status' => 'all', 'meta_key' => 'notification_id', 'meta_value' => $id ) );
			if ( $notifications ) {
				foreach ( $notifications as $notification ) {
					update_post_meta( $notification->ID, 'viewed', 1 );
				}
			}
		}
	}
}