// Make sure this file is only run from within the WordPress context.
defined( 'ABSPATH' ) || exit;

/**
 * Antispam_Bee
 *
 * @since  0.1
 * @since  2.4
 */
class Antispam_Bee {

	/**
	 * The option defaults.
	 *
	 * @var array
	 */
	public static $defaults;

	/**
	 * Which internal datastructure version we are running on.
	 *
	 * @var int

	 * @var string
	 */
	private static $_salt;

	/**
	 * The spam reason.
	 *
	 * @var string
	 */
	private static $_reason;

	/**
	 * The current Post ID.
	 *
	 * @var int
	 */
	private static $_current_post_id;

	/**
	 * "Constructor" of the class
	 *
	 * @since  0.1
	 * @since  2.6.4
	 * @since  2.10.0 Change handling of comment field honeypot and call functions after completed upgrades
	 * @since  2.11.0 Change priority from default 10 to 99 for comment_form_field_comment
	 */
	public static function init() {
		add_action(
			'upgrader_process_complete',
			array(
				__CLASS__,
				'upgrades_completed',
			),
			10,
			2
		);

		add_action(
			'upgrader_overwrote_package',
			array(
				__CLASS__,
				'uploaded_upgrade_completed',
			),
			10,
			3
		);

		add_action(
			'unspam_comment',
			array(
				__CLASS__,
				'delete_spam_reason_by_comment',
			)
		);

		add_action(
			'comment_unapproved_to_spam',
			array(
				__CLASS__,
				'update_antispam_bee_reason',
			)
		);

		add_action(
			'comment_approved_to_spam',
			array(
				__CLASS__,
				'update_antispam_bee_reason',
			)
		);

		$disallow_ajax = apply_filters( 'antispam_bee_disallow_ajax_calls', true );

		if ( defined( 'DOING_AJAX' ) && DOING_AJAX && $disallow_ajax ) {
			return;
		}

		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
			return;
		}

		self::_init_internal_vars();

		if ( self::_current_page( 'dashboard' ) || self::_current_page( 'plugins' ) || self::_current_page( 'options' ) || self::_current_page( 'edit-comments' ) || self::_current_page( 'admin-post' ) ) {
			self::load_plugin_lang();
			self::add_reasons_to_defaults();
		}

		if ( defined( 'DOING_CRON' ) ) {
			add_action(
				'antispam_bee_daily_cronjob',
				array(
					__CLASS__,
					'start_daily_cronjob',
				)
			);

		} elseif ( is_admin() ) {
			add_action(
				'admin_menu',
				array(
					__CLASS__,
					'add_sidebar_menu',
				)
			);

			if ( self::_current_page( 'dashboard' ) ) {
				add_filter(
					'dashboard_glance_items',
					array(
						__CLASS__,
						'add_dashboard_count',

				add_action(
					'admin_init',
					array(
						__CLASS__,
						'init_plugin_sources',
					)
				);
				add_action(
					'admin_init',
					array(
						__CLASS__,
						'update_database',
					)

					// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
					require_once dirname( __FILE__ ) . '/inc/columns.class.php';

					add_filter(
						'manage_edit-comments_columns',
						array(
							'Antispam_Bee_Columns',
							'register_plugin_columns',
						)
					);
					add_filter(
						'manage_comments_custom_column',
						array(
							'Antispam_Bee_Columns',
							'print_plugin_column',
						),
						10,
						2
					);
					add_filter(
						'admin_print_styles-edit-comments.php',
						array(
							'Antispam_Bee_Columns',
							'print_column_styles',
						)
					);

					add_filter(
						'manage_edit-comments_sortable_columns',
						array(
							'Antispam_Bee_Columns',
							'register_sortable_columns',
						)
					);
					add_action(
						'pre_get_comments',
						array(
							'Antispam_Bee_Columns',
							'set_orderby_query',
						)
					);
					add_action(
						'restrict_manage_comments',
						array(
							'Antispam_Bee_Columns',
							'filter_columns',
						)
					);
					add_action(
						'pre_get_comments',
						array(
							'Antispam_Bee_Columns',
							'filter_by_spam_reason',
						)
					);
				}
			}
		} else {
			add_action(
				'wp',
				array(
					__CLASS__,
					'populate_post_id',
				)
			);

			if ( 1 == self::get_option( 'use_output_buffer' ) || null === self::get_option( 'use_output_buffer' ) ) {
				add_action(
					'template_redirect',
					array(
						__CLASS__,
						'prepare_comment_field_output_buffering',
					)
				);
			} else {
				add_filter(
					'comment_form_field_comment',
					array(
						__CLASS__,
						'prepare_comment_field',
					),
					99
				);
			}

			add_action(
				'init',
				array(
					__CLASS__,
					'precheck_incoming_request',
				)
			);
			add_action(
				'preprocess_comment',
				array(
					__CLASS__,
					'handle_incoming_request',
				),
				1
			);
			add_action(
				'antispam_bee_count',
				array(
					__CLASS__,
					'the_spam_count',
				)
			);
		}
	}



	/*
	*   ############################
	*   ########  INSTALL  #########
	*   ############################
	*/

	/**
	 * Action during the activation of the Plugins
	 *
	 * @since  0.1
	 * @since  2.4
	 * @since  2.10.0 Set `use_output_buffer` option to `0`
	 */
	public static function activate() {
		add_option(
			'antispam_bee',
			array(
				'use_output_buffer' => 0,
			),
			'',
			'no'
		);

		if ( self::get_option( 'cronjob_enable' ) ) {
			self::init_scheduled_hook();
		}
	}


	/**
	 * Action to deactivate the plugin
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	public static function deactivate() {
		self::clear_scheduled_hook();
	}


	/**
	 * Action deleting the plugin
	 *
	 * @since  2.4
	 */
	public static function uninstall() {
		if ( ! self::get_option( 'delete_data_on_uninstall' ) ) {
			return;
		}
		global $wpdb;

		delete_option( 'antispam_bee' );
		$wpdb->query( 'OPTIMIZE TABLE `' . $wpdb->options . '`' );

		//phpcs:disable WordPress.DB.PreparedSQL.NotPrepared
		$sql = 'delete from `' . $wpdb->commentmeta . '` where `meta_key` IN ("antispam_bee_iphash", "antispam_bee_reason")';
		$wpdb->query( $sql );
		//phpcs:enable WordPress.DB.PreparedSQL.NotPrepared
	}



	/*
	*   ############################
	*   ########  INTERNAL  ########
	*   ############################
	*/

	/**
	 * Initialization of the internal variables
	 *
	 * @since  2.4
	 * @since  2.7.0
	 * @since  2.10.0 Change renamed country option names in options array
	 */
	private static function _init_internal_vars() {
		self::$_base = plugin_basename( __FILE__ );

		$salt        = defined( 'NONCE_SALT' ) ? NONCE_SALT : ABSPATH;
		self::$_salt = substr( sha1( $salt ), 0, 10 );

		self::$defaults = array(
			'options' => array(
				'regexp_check'             => 1,
				'spam_ip'                  => 1,
				'already_commented'        => 1,
				'gravatar_check'           => 0,
				'time_check'               => 0,
				'ignore_pings'             => 0,

				'dashboard_chart'          => 0,
				'dashboard_count'          => 0,

				'country_code'             => 0,
				'country_denied'           => '',
				'country_allowed'          => '',

				'translate_api'            => 0,
				'translate_lang'           => array(),

				'bbcode_check'             => 1,

				'flag_spam'                => 1,
				'email_notify'             => 0,
				'no_notice'                => 0,
				'cronjob_enable'           => 0,
				'cronjob_interval'         => 0,

				'ignore_filter'            => 0,
				'ignore_type'              => 0,

				'reasons_enable'           => 0,
				'ignore_reasons'           => array(),

				'delete_data_on_uninstall' => 1,
			),
		);
	}

	/**
	 * Adds spam reason labels to the `$defaults` array.
	 *
	 * That is done in an extra method instead of `_init_internal_vars`
	 * so that the translations are loaded before.
	 *
	 * @since 2.11.2
	 */
	private static function add_reasons_to_defaults() {
		self::$defaults['reasons'] = array(
			'css'           => esc_attr__( 'Honeypot', 'antispam-bee' ),
			'time'          => esc_attr__( 'Comment time', 'antispam-bee' ),
			'empty'         => esc_attr__( 'Empty Data', 'antispam-bee' ),
			'localdb'       => esc_attr__( 'Local DB Spam', 'antispam-bee' ),
			'server'        => esc_attr__( 'Fake IP', 'antispam-bee' ),
			'country'       => esc_attr__( 'Country Check', 'antispam-bee' ),
			'bbcode'        => esc_attr__( 'BBCode', 'antispam-bee' ),
			'lang'          => esc_attr__( 'Comment Language', 'antispam-bee' ),
			'regexp'        => esc_attr__( 'Regular Expression', 'antispam-bee' ),
			'title_is_name' => esc_attr__( 'Identical Post title and blog title', 'antispam-bee' ),
			'manually'      => esc_attr__( 'Manually', 'antispam-bee' ),
		);
	}

	/**
	 * Check and return an array key
	 *
	 * @since   2.4.2
	 * @since   2.10.0 Only return `null` if option does not exist.
	 *
	 * @param   array  $array Array with values.
	 * @param   string $key   Name of the key.
	 * @return  mixed         Value of the requested key.
	 */
	public static function get_key( $array, $key ) {
		if ( empty( $array ) || empty( $key ) || ! isset( $array[ $key ] ) ) {
			return null;
		}

		return $array[ $key ];
	}

	/**
	 * Check if comment is a ping (pingback, trackback or something similar)
	 *
	 * @since   2.10.0
	 *
	 * @param   array $comment Treated commentary data.
	 * @return  boolean        `true` if ping and `false` if classic comment
	 */
	public static function is_ping( $comment ) {
		$types   = array( 'pingback', 'trackback', 'pings' );
		$is_ping = false;

		if ( in_array( self::get_key( $comment, 'comment_type' ), $types, true ) ) {
			$is_ping = true;
		}

		return apply_filters( 'antispam_bee_is_ping', $is_ping, $comment );
	}

	/**
	 * Localization of the admin pages
	 *
	 * @since   0.1
	 * @since   2.4
	 *
	 * @param   string $page Mark the page.
	 * @return  boolean      True on success.
	 */
	private static function _current_page( $page ) {
		// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
		switch ( $page ) {
			case 'dashboard':
				return ( empty( $GLOBALS['pagenow'] ) || ( ! empty( $GLOBALS['pagenow'] ) && 'index.php' === $GLOBALS['pagenow'] ) );

			case 'options':
				return ( ! empty( $_GET['page'] ) && 'antispam_bee' === $_GET['page'] );

			case 'plugins':
				return ( ! empty( $GLOBALS['pagenow'] ) && 'plugins.php' === $GLOBALS['pagenow'] );

			case 'admin-post':
				return ( ! empty( $GLOBALS['pagenow'] ) && 'admin-post.php' === $GLOBALS['pagenow'] );

			case 'edit-comments':
				return ( ! empty( $GLOBALS['pagenow'] ) && 'edit-comments.php' === $GLOBALS['pagenow'] );

			default:
				return false;
		}
		// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
	}


	/**
	 * Integration of the localization file
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	public static function load_plugin_lang() {
		load_plugin_textdomain(
			'antispam-bee'
		);
	}


	/**
	 * Add the link to the settings
	 *
	 * @since  1.1
	 *
	 * @param array $data The action link array.
	 * @return array $data The action link array.
	 */
	public static function init_action_links( $data ) {
		if ( ! current_user_can( 'manage_options' ) ) {
			return $data;
		}

		return array_merge(
			$data,
			array(
				sprintf(
					'<a href="%s">%s</a>',
					add_query_arg(
						array(
							'page' => 'antispam_bee',
						),
						admin_url( 'options-general.php' )
					),
					esc_attr__( 'Settings', 'antispam-bee' )
				),
			)
		);
	}

	/**
	 * Meta links of the plugin
	 *
	 * @since  0.1
	 * @since  2.6.2
	 *
	 * @param   array  $input Existing links.
	 * @param   string $file  Current page.
	 * @return  array  $data  Modified links.
	 */
	public static function init_row_meta( $input, $file ) {
		if ( $file !== self::$_base ) {
			return $input;
		}

		return array_merge(
			$input,
			array(
				'<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=TD4AMD2D8EMZW" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Donate', 'antispam-bee' ) . '</a>',
				'<a href="https://wordpress.org/support/plugin/antispam-bee" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Support', 'antispam-bee' ) . '</a>',
			)
		);
	}

	/*
	*   ############################
	*   #######  RESOURCES  ########
	*   ############################
	*/

	/**
	 * Registration of resources (CSS & JS)
	 *
	 * @since  1.6
	 * @since  2.4.5
	 */
	public static function init_plugin_sources() {
		$plugin = get_plugin_data( __FILE__ );

		wp_register_script(
			'ab_script',
			plugins_url( 'js/scripts.min.js', __FILE__ ),
			array( 'jquery' ),
			$plugin['Version']
		);

		wp_register_style(
			'ab_style',
			plugins_url( 'css/styles.min.css', __FILE__ ),
			array( 'dashicons' ),
			$plugin['Version']
		);
	}


	/**
	 * Initialization of the option page
	 *
	 * @since  0.1
	 * @since  2.4.3
	 */
	public static function add_sidebar_menu() {
		$page = add_options_page(
			'Antispam Bee',
			'Antispam Bee',
			'manage_options',
			'antispam_bee',
			array(
				'Antispam_Bee_GUI',
				'options_page',
			)
		);

		add_action(
			'admin_print_scripts-' . $page,
			array(
				__CLASS__,
				'add_options_script',
			)
		);

		add_action(
			'admin_print_styles-' . $page,
			array(
				__CLASS__,
				'add_options_style',
			)
		);

		add_action(
			'load-' . $page,
			array(
				__CLASS__,
				'init_options_page',
			)
		);
	}


	/**
	 * Initialization of JavaScript
	 *
	 * @since  1.6
	 * @since  2.4
	 */
	public static function add_options_script() {
		wp_enqueue_script( 'ab_script' );
	}


	/**
	 * Initialization of Stylesheets
	 *
	 * @since  1.6
	 * @since  2.4
	 */
	public static function add_options_style() {
		wp_enqueue_style( 'ab_style' );
	}


	/**
	 * Integration of the GUI
	 *
	 * @since   2.4
	 */
	public static function init_options_page() {
		require_once dirname( __FILE__ ) . '/inc/gui.class.php';
	}



	/*
	*   ############################
	*   #######  DASHBOARD  ########
	*   ############################
	*/

	/**
	 * Display the spam counter on the dashboard
	 *
	 * @since  0.1
	 * @since  2.6.5
	 *
	 * @param   array $items  Initial array with dashboard items.
	 * @return  array $items  Merged array with dashboard items.
	 */
	public static function add_dashboard_count( $items = array() ) {
		if ( ! current_user_can( 'manage_options' ) || ! self::get_option( 'dashboard_count' ) ) {
			return $items;
		}

		echo '<style>#dashboard_right_now .ab-count:before {content: "\f117"}</style>';

		$items[] = '<span class="ab-count">' . esc_html(
			sprintf(
				// translators: The number of spam comments Antispam Bee blocked so far.
				__( '%s Blocked', 'antispam-bee' ),
				self::_get_spam_count()
			)
		) . '</span>';

		return $items;
	}

	/**
	 * Initialize the dashboard chart
	 *
	 * @since  1.9
	 * @since  2.5.6
	 */
	public static function add_dashboard_chart() {
		if ( ! current_user_can( 'publish_posts' ) || ! self::get_option( 'dashboard_chart' ) ) {
			return;
		}

		wp_add_dashboard_widget(
			'ab_widget',
			'Antispam Bee',
			array(
				__CLASS__,
				'show_spam_chart',
			)
		);

		add_action(
			'admin_head',
			array(
				__CLASS__,
				'add_dashboard_style',
			)
		);
	}

	/**
	 * Print dashboard styles
	 *
	 * @since  1.9.0
	 * @since  2.5.8
	 */
	public static function add_dashboard_style() {
		$plugin = get_plugin_data( __FILE__ );

		wp_register_style(
			'ab_chart',
			plugins_url( 'css/dashboard.min.css', __FILE__ ),
			array(),
			$plugin['Version']
		);

		wp_print_styles( 'ab_chart' );
	}


	/**
	 * Print dashboard scripts
	 *
	 * @since  1.9.0
	 * @since  2.5.8
	 */
	public static function add_dashboard_script() {
		if ( ! self::get_option( 'daily_stats' ) ) {
			return;
		}

		$plugin = get_plugin_data( __FILE__ );

		wp_enqueue_script(
			'raphael',
			plugins_url( 'js/raphael.min.js', __FILE__ ),
			array(),
			'2.1.0',
			true
		);

		wp_enqueue_script(
			'ab-raphael',
			plugins_url( 'js/raphael.helper.min.js', __FILE__ ),
			array( 'raphael' ),
			$plugin['Version'],
			true
		);

		wp_enqueue_script(
			'ab_chart_js',
			plugins_url( 'js/dashboard.min.js', __FILE__ ),
			array( 'jquery', 'ab-raphael' ),
			$plugin['Version'],
			true
		);
	}

	/**
	 * Print dashboard html
	 *
	 * @since  1.9.0
	 * @since  2.5.8
	 */
	public static function show_spam_chart() {
		$items = (array) self::get_option( 'daily_stats' );

		if ( empty( $items ) ) {
			echo sprintf(
				'<div id="ab_chart"><p>%s</p></div>',
				esc_html__( 'No data available.', 'antispam-bee' )
			);

			return;
		}

		self::add_dashboard_script();

		ksort( $items, SORT_NUMERIC );

		$html = "<table id=ab_chart_data>\n";

		$html .= "<tfoot><tr>\n";
		foreach ( $items as $date => $count ) {
			$html .= '<th>' . date_i18n( 'j. F Y', $date ) . "</th>\n";
		}
		$html .= "</tr></tfoot>\n";

		$html .= "<tbody><tr>\n";
		foreach ( $items as $date => $count ) {
			$html .= '<td>' . (int) $count . "</td>\n";
		}
		$html .= "</tr></tbody>\n";

		$html .= "</table>\n";

		echo wp_kses_post( '<div id="ab_chart">' . $html . '</div>' );
	}

	/*
	*   ############################
	*   ########  OPTIONS  #########
	*   ############################
	*/

	/**
	 * Get all plugin options
	 *
	 * @since  2.4
	 * @since  2.6.1
	 *
	 * @return  array $options Array with option fields.
	 */
	public static function get_options() {
		$options = wp_cache_get( 'antispam_bee' );
		if ( ! $options ) {
			wp_cache_set(
				'antispam_bee',
				$options = get_option( 'antispam_bee' )
			);
		}

		if ( null === self::$defaults ) {
			self::_init_internal_vars();
		}

		return wp_parse_args(
			$options,
			self::$defaults['options']
		);
	}

	/**
	 * Get single option field
	 *
	 * @since  0.1
	 * @since  2.4.2
	 *
	 * @param   string $field Field name.
	 * @return  mixed         Field value.
	 */
	public static function get_option( $field ) {
		$options = self::get_options();

		return self::get_key( $options, $field );
	}


	/**
	 * Update single option field
	 *
	 * @since  0.1
	 * @since  2.4
	 *
	 * @param   string $field Field name.
	 * @param   mixed  $value The Field value.
	 */
	private static function _update_option( $field, $value ) {
		self::update_options(
			array(
				$field => $value,
			)
		);
	}


	/**
	 * Update multiple option fields
	 *
	 * @since  0.1
	 * @since  2.6.1
	 *
	 * @param   array $data Array with plugin option fields.
	 */
	public static function update_options( $data ) {
		$options = get_option( 'antispam_bee' );

		if ( is_array( $options ) ) {
			$options = array_merge(
				$options,
				$data
			);
		} else {
			$options = $data;
		}

		update_option(
			'antispam_bee',
			$options
		);

		wp_cache_set(
			'antispam_bee',
			$options
		);
	}



	/*
	*   ############################
	*   ########  CRONJOBS  ########
	*   ############################
	*/

	/**
	 * Execution of the daily cronjobs
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	public static function start_daily_cronjob() {
		if ( ! self::get_option( 'cronjob_enable' ) ) {
			return;
		}

		self::_update_option(
			'cronjob_timestamp',
			time()
		);

		self::_delete_old_spam();
	}


	/**
	 * Delete old spam comments
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	private static function _delete_old_spam() {
		$days = (int) self::get_option( 'cronjob_interval' );

		if ( empty( $days ) ) {
			return false;
		}

		global $wpdb;

		$wpdb->query(
			$wpdb->prepare(
				"DELETE c, cm FROM `$wpdb->comments` AS c LEFT JOIN `$wpdb->commentmeta` AS cm ON (c.comment_ID = cm.comment_id) WHERE c.comment_approved = 'spam' AND SUBDATE(NOW(), %d) > c.comment_date_gmt",
				$days
			)
		);

		$wpdb->query( "OPTIMIZE TABLE `$wpdb->comments`" );
	}


	/**
	 * Initialization of the cronjobs
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	public static function init_scheduled_hook() {
		if ( ! wp_next_scheduled( 'antispam_bee_daily_cronjob' ) ) {
			wp_schedule_event(
				time(),
				'daily',
				'antispam_bee_daily_cronjob'
			);
		}
	}


	/**
	 * Deletion of the cronjobs
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	public static function clear_scheduled_hook() {
		if ( wp_next_scheduled( 'antispam_bee_daily_cronjob' ) ) {
			wp_clear_scheduled_hook( 'antispam_bee_daily_cronjob' );
		}
	}

	/**
	 * Shows plugin update notice
	 *
	 * @since  2.11.4
	 *
	 * @param array $data An array of plugin metadata. See get_plugin_data()
	 *                    and the {@see 'plugin_row_meta'} filter for the list
	 *                    of possible values.
	 *
	 * @return void
	 */
	public static function upgrade_notice( $data ) {
		if ( isset( $data['upgrade_notice'] ) ) {
			printf(
				'<div class="update-message">%s</div>',
				wp_kses(
					wpautop( $data['upgrade_notice '] ),
					array(
						'p'     => array(),
						'a'     => array( 'href', 'title' ),
						'strong' => array(),
						'em' => array(),
					)
				)
			);
		}
	}


	/*
	*   ############################
	*   ######  SPAM CHECK  ########
	*   ############################
	*/

	/**
	 * Check POST values
	 *
	 * @since  0.1
	 * @since  2.6.3
	 */
	public static function precheck_incoming_request() {
		// phpcs:disable WordPress.Security.NonceVerification.Missing
		if ( is_feed() || is_trackback() || empty( $_POST ) || self::_is_mobile() ) {
			return;
		}

		$request_uri  = self::get_key( $_SERVER, 'REQUEST_URI' );
		$request_path = self::parse_url( $request_uri, 'path' );

		if ( strpos( $request_path, 'wp-comments-post.php' ) === false ) {
			return;
		}

		$post_id      = (int) self::get_key( $_POST, 'comment_post_ID' );
		$hidden_field = self::get_key( $_POST, 'comment' );
		$plugin_field = self::get_key( $_POST, self::get_secret_name_for_post( $post_id ) );

		if ( ! empty( $hidden_field ) ) {
			$_POST['ab_spam__hidden_field'] = 1;
		} else {
			$_POST['comment'] = $plugin_field;
			unset( $_POST[ self::get_secret_name_for_post( $post_id ) ] );
		}
		// phpcs:enable WordPress.Security.NonceVerification.Missing
	}


	/**
	 * Check incoming requests for spam
	 *
	 * @since  0.1
	 * @since  2.6.3
	 * @since  2.10.0 Refactoring of code if pings are allowed and if is ping
	 *
	 * @param   array $comment  Untreated comment.
	 * @return  array $comment  Treated comment.
	 */
	public static function handle_incoming_request( $comment ) {
		$comment['comment_author_IP'] = self::get_client_ip();

		$request_uri  = self::get_key( $_SERVER, 'REQUEST_URI' );
		$request_path = self::parse_url( $request_uri, 'path' );

		if ( empty( $request_path ) ) {
			return self::_handle_spam_request(
				$comment,
				'empty'
			);
		}

		$pings_allowed = ! self::get_option( 'ignore_pings' );

		// phpcs:disable WordPress.Security.NonceVerification.Missing
		// Everybody can post.
		if ( strpos( $request_path, 'wp-comments-post.php' ) !== false && ! empty( $_POST ) ) {
			// phpcs:enable WordPress.Security.NonceVerification.Missing
			$status = self::_verify_comment_request( $comment );

			if ( ! empty( $status['reason'] ) ) {
				return self::_handle_spam_request(
					$comment,
					$status['reason']
				);
			}
		} elseif ( self::is_ping( $comment ) && $pings_allowed ) {
			$status = self::_verify_trackback_request( $comment );

			if ( ! empty( $status['reason'] ) ) {
				return self::_handle_spam_request(
					$comment,
					$status['reason'],
					true
				);
			}
		}

		return $comment;
	}

	/**
	 * Prepares the replacement of the comment field with output buffering.
	 *
	 * @since 2.10.0
	 */
	public static function prepare_comment_field_output_buffering() {
		if ( is_feed() || is_trackback() || is_robots() || self::_is_mobile() ) {
			return;
		}

		ob_start(
			array(
				'Antispam_Bee',
				'prepare_comment_field',
			)
		);
	}


	/**
	 * Prepares the replacement of the comment field
	 *
	 * @since  0.1
	 * @since  2.4
	 * @since  2.10.0 Changes needed because of new way to add the honeypot field via filter instead of output buffering
	 *
	 * @param string $data Markup of the comment field or whole page (depending on ob option).
	 */
	public static function prepare_comment_field( $data ) {
		if ( empty( $data ) ) {
			return $data;
		}

		if ( ! preg_match( '#<textarea.+?name=["\']comment["\']#s', $data ) ) {
			return $data;
		}

		return preg_replace_callback(
			'/(?P<all>                                                              (?# match the whole textarea tag )
				<textarea                                                           (?# the opening of the textarea and some optional attributes )
				(                                                                   (?# match a id attribute followed by some optional ones and the name attribute )
					(?P<before1>[^>]*)
					(?P<id1>id=["\'](?P<id_value1>[^>"\']*)["\'])
					(?P<between1>[^>]*)
					name=["\']comment["\']
					|                                                               (?# match same as before, but with the name attribute before the id attribute )
					(?P<before2>[^>]*)
					name=["\']comment["\']
					(?P<between2>[^>]*)
					(?P<id2>id=["\'](?P<id_value2>[^>"\']*)["\'])
					|                                                               (?# match same as before, but with no id attribute )
					(?P<before3>[^>]*)
					name=["\']comment["\']
					(?P<between3>[^>]*)
				)
				(?P<after>[^>]*)                                                    (?# match any additional optional attributes )
				>                                                                   (?# the closing of the textarea opening tag )
				(?s)(?P<content>.*?)                                                (?# any textarea content )
				<\/textarea>                                                        (?# the closing textarea tag )
			)/x',
			array( 'Antispam_Bee', 'replace_comment_field_callback' ),
			$data,
			-1
		);
	}

	/**
	 * The callback function for the preg_match_callback to modify the textarea tags.
	 *
	 * @since   2.6.10
	 *
	 * @param array $matches The regex matches.
	 *
	 * @return string The modified content string.
	 */
	public static function replace_comment_field_callback( $matches ) {
		if ( self::get_option( 'time_check' ) ) {
			$init_time_field = sprintf(
				'<input type="hidden" name="ab_init_time" value="%d" />',
				time()
			);
		} else {
			$init_time_field = '';
		}

		$output = '<textarea autocomplete="new-password" ' . $matches['before1'] . $matches['before2'] . $matches['before3'];

		$id_script = '';
		if ( ! empty( $matches['id1'] ) || ! empty( $matches['id2'] ) ) {
			$output .= 'id="' . self::get_secret_id_for_post( self::$_current_post_id ) . '" ';
			if ( ! self::_is_amp() ) {
				$id_script = '<script data-noptimize>' .
							'document.getElementById("comment").setAttribute( "id", "a' . substr( esc_js( md5( time() ) ), 0, 31 ) . '" );' .
							'document.getElementById("' . esc_js( self::get_secret_id_for_post( self::$_current_post_id ) ) . '").setAttribute( "id", "comment" );' .
							'</script>';
			}
		}

		$output .= ' name="' . esc_attr( self::get_secret_name_for_post( self::$_current_post_id ) ) . '" ';
		$output .= $matches['between1'] . $matches['between2'] . $matches['between3'];
		$output .= $matches['after'] . '>';
		$output .= $matches['content'];
		$output .= '</textarea><textarea id="comment" aria-label="hp-comment" aria-hidden="true" name="comment" autocomplete="new-password" style="padding:0 !important;clip:rect(1px, 1px, 1px, 1px) !important;position:absolute !important;white-space:nowrap !important;height:1px !important;width:1px !important;overflow:hidden !important;" tabindex="-1"></textarea>';

		$output .= $id_script;
		$output .= $init_time_field;

		return $output;
	}


	/**
	 * Check the trackbacks
	 *
	 * @since  2.4
	 * @since  2.7.0
	 *
	 * @param   array $comment Trackback data.
	 * @return  array          Array with suspected reason.
	 */
	private static function _verify_trackback_request( $comment ) {
		$ip        = self::get_key( $comment, 'comment_author_IP' );
		$url       = self::get_key( $comment, 'comment_author_url' );
		$body      = self::get_key( $comment, 'comment_content' );
		$post_id   = self::get_key( $comment, 'comment_post_ID' );
		$type      = self::get_key( $comment, 'comment_type' );
		$blog_name = self::get_key( $comment, 'comment_author' );

		if ( empty( $url ) || empty( $body ) ) {
			return array(
				'reason' => 'empty',
			);
		}

		if ( empty( $ip ) ) {
			return array(
				'reason' => 'empty',
			);
		}

		if ( 'pingback' === $type && self::_pingback_from_myself( $url, $post_id ) ) {
			return;
		}

		if ( self::is_trackback_post_title_blog_name_spam( $body, $blog_name ) ) {
			return array(
				'reason' => 'title_is_name',
			);
		}

		$options = self::get_options();

		if ( $options['bbcode_check'] && self::_is_bbcode_spam( $body ) ) {
			return array(
				'reason' => 'bbcode',
			);
		}

		if ( $options['spam_ip'] && self::_is_db_spam( $ip, $url ) ) {
			return array(
				'reason' => 'localdb',
			);
		}

		if ( $options['country_code'] && self::_is_country_spam( $ip ) ) {
			return array(
				'reason' => 'country',
			);
		}

		if ( $options['translate_api'] && self::_is_lang_spam( $body ) ) {
			return array(
				'reason' => 'lang',
			);
		}

		if ( $options['regexp_check'] && self::_is_regexp_spam(
			array(
				'ip'     => $ip,
				'rawurl' => $url,
				'host'   => self::parse_url( $url, 'host' ),
				'body'   => $body,
				'email'  => '',
				'author' => '',
			)
		) ) {
			return array(
				'reason' => 'regexp',
			);
		}
	}

	/**
	 * Check, if I pinged myself.
	 *
	 * @since 2.8.2
	 *
	 * @param string $url            The URL from where the ping came.
	 * @param int    $target_post_id The post ID which has been pinged.
	 *
	 * @return bool
	 */
	private static function _pingback_from_myself( $url, $target_post_id ) {

		if ( 0 !== strpos( $url, home_url() ) ) {
			return false;
		}

		$original_post_id = (int) url_to_postid( $url );
		if ( ! $original_post_id ) {
			return false;
		}

		$post = get_post( $original_post_id );
		if ( ! $post ) {
			return false;
		}

		$urls        = wp_extract_urls( $post->post_content );
		$url_to_find = get_permalink( $target_post_id );
		if ( ! $url_to_find ) {
			return false;
		}
		foreach ( $urls as $url ) {
			if ( strpos( $url, $url_to_find ) === 0 ) {
				return true;
			}
		}
		return false;
	}

	/**
	 * Check the comment
	 *
	 * @since  2.4
	 * @since  2.7.0
	 * @since  2.10.0 Add useragent as data to regex check
	 *
	 * @param   array $comment Data of the comment.
	 * @return  array|void     Array with suspected reason
	 */
	private static function _verify_comment_request( $comment ) {
		$ip        = self::get_key( $comment, 'comment_author_IP' );
		$url       = self::get_key( $comment, 'comment_author_url' );
		$body      = self::get_key( $comment, 'comment_content' );
		$email     = self::get_key( $comment, 'comment_author_email' );
		$author    = self::get_key( $comment, 'comment_author' );
		$useragent = self::get_key( $comment, 'comment_agent' );

		// phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
		$allow_empty_comment = apply_filters( 'allow_empty_comment', false, $comment );

		if ( empty( $body ) && ! $allow_empty_comment ) {
			return array(
				'reason' => 'empty',
			);
		}

		if ( empty( $ip ) ) {
			return array(
				'reason' => 'empty',
			);
		}

		if ( get_option( 'require_name_email' ) && ( empty( $email ) || empty( $author ) ) ) {
			return array(
				'reason' => 'empty',
			);
		}

		$options = self::get_options();

		if ( $options['already_commented'] && ! empty( $email ) && self::_is_approved_email( $email ) ) {
			return;
		}

		if ( $options['gravatar_check'] && ! empty( $email ) && 1 === (int) get_option( 'show_avatars', 0 ) && self::_has_valid_gravatar( $email ) ) {
			return;
		}

		// phpcs:disable WordPress.Security.NonceVerification.Missing
		if ( ! empty( $_POST['ab_spam__hidden_field'] ) ) {
			return array(
				'reason' => 'css',
			);
		}
		// phpcs:enable WordPress.Security.NonceVerification.Missing

		if ( $options['time_check'] && self::_is_shortest_time() ) {
			return array(
				'reason' => 'time',
			);
		}

		if ( $options['bbcode_check'] && self::_is_bbcode_spam( $body ) ) {
			return array(
				'reason' => 'bbcode',
			);
		}

		if ( $options['regexp_check'] && self::_is_regexp_spam(
			array(
				'ip'        => $ip,
				'rawurl'    => $url,
				'host'      => self::parse_url( $url, 'host' ),
				'body'      => $body,
				'email'     => $email,
				'author'    => $author,
				'useragent' => $useragent,
			)
		) ) {
			return array(
				'reason' => 'regexp',
			);
		}

		if ( $options['spam_ip'] && self::_is_db_spam( $ip, $url, $email ) ) {
			return array(
				'reason' => 'localdb',
			);
		}

		if ( $options['country_code'] && self::_is_country_spam( $ip ) ) {
			return array(
				'reason' => 'country',
			);
		}

		if ( $options['translate_api'] && self::_is_lang_spam( $body ) ) {
			return array(
				'reason' => 'lang',
			);
		}
	}


	/**
	 * Check for a Gravatar image
	 *
	 * @since  2.6.5
	 *
	 * @param   string $email Input email.
	 * @return  boolean       Check status (true = Gravatar available).
	 */
	private static function _has_valid_gravatar( $email ) {
		$response = wp_safe_remote_get(
			sprintf(
				'https://www.gravatar.com/avatar/%s?d=404',
				md5( strtolower( trim( $email ) ) )
			)
		);

		if ( is_wp_error( $response ) ) {
			return null;
		}

		if ( wp_remote_retrieve_response_code( $response ) === 200 ) {
			return true;
		}

		return false;
	}


	/**
	 * Check for comment action time
	 *
	 * @since   2.6.4
	 *
	 * @return  boolean    TRUE if the action time is less than 5 seconds
	 */
	private static function _is_shortest_time() {
		// phpcs:disable WordPress.Security.NonceVerification.Missing
		// Everybody can Post.
		$init_time = (int) self::get_key( $_POST, 'ab_init_time' );
		// phpcs:enable WordPress.Security.NonceVerification.Missing
		if ( 0 === $init_time ) {
			return false;
		}

		if ( time() - $init_time < apply_filters( 'ab_action_time_limit', 5 ) ) {
			return true;
		}

		return false;
	}

	/**
	 * Check if the blog name and the title of the blog post from which the trackback originates are equal.
	 *
	 * @since   2.6.4
	 *
	 * @param string $body      The comment body.
	 * @param string $blog_name The name of the blog.
	 *
	 * @return bool
	 */
	private static function is_trackback_post_title_blog_name_spam( $body, $blog_name ) {
		preg_match( '/<strong>(.*)<\/strong>\\n\\n/', $body, $matches );
		if ( ! isset( $matches[1] ) ) {
			return false;
		}
		return trim( $matches[1] ) === trim( $blog_name );
	}


	/**
	 * Usage of regexp, also custom
	 *
	 * @since  2.5.2
	 * @since  2.5.6
	 * @since  2.10.0 Use useragent in check
	 *
	 * @param   array $comment Array with commentary data.
	 * @return  boolean        True for suspicious comment.
	 */
	private static function _is_regexp_spam( $comment ) {
		$fields = array(
			'ip',
			'host',
			'body',
			'email',
			'author',
			'useragent',
		);

		$patterns = array(
			array(
				'host'  => '^(www\.)?\d+\w+\.com$',
				'body'  => '^\w+\s\d+$',
				'email' => '@gmail.com$',
			),
			array(
				'body'   => '\b[a-z]{30}\b',
				'author' => '\b[a-z]{10}\b',
				'host'   => '\b[a-z]{10}\b',
			),
			array(
				'body' => '\<\!.+?mfunc.+?\>',
			),
			array(
				'author' => 'moncler|north face|vuitton|handbag|burberry|outlet|prada|cialis|viagra|maillot|oakley|ralph lauren|ray ban|iphone|プラダ',
			),
			array(
				'host' => '^(www\.)?fkbook\.co\.uk$|^(www\.)?nsru\.net$|^(www\.)?goo\.gl$|^(www\.)?bit\.ly$',
			),
			array(
				'body' => 'target[t]?ed (visitors|traffic)|viagra|cialis',
			),
			array(
				'body' => 'purchase amazing|buy amazing|luxurybrandsale',
			),
			array(
				'body'  => 'dating|sex|lotto|pharmacy',
				'email' => '@mail\.ru|@yandex\.',
			),
		);

		$quoted_author = preg_quote( $comment['author'], '/' );
		if ( $quoted_author ) {
			$patterns[] = array(
				'body' => sprintf(
					'<a.+?>%s<\/a>$',
					$quoted_author
				),
			);
			$patterns[] = array(
				'body' => sprintf(
					'%s https?:.+?$',
					$quoted_author
				),
			);
			$patterns[] = array(
				'email'  => '@gmail.com$',
				'author' => '^[a-z0-9-\.]+\.[a-z]{2,6}$',
				'host'   => sprintf(
					'^%s$',
					$quoted_author
				),
			);
		}

		$patterns = apply_filters(
			'antispam_bee_patterns',
			$patterns
		);

		if ( ! $patterns ) {
			return false;
		}

		foreach ( $patterns as $pattern ) {
			$hits = array();

			foreach ( $pattern as $field => $regexp ) {
				if ( empty( $field ) || ! in_array( $field, $fields, true ) || empty( $regexp ) ) {
					continue;
				}

				$comment[ $field ] = ( function_exists( 'iconv' ) ? iconv( 'utf-8', 'utf-8//TRANSLIT', $comment[ $field ] ) : $comment[ $field ] );

				if ( empty( $comment[ $field ] ) ) {
					continue;
				}

				if ( preg_match( '/' . $regexp . '/isu', $comment[ $field ] ) ) {
					$hits[ $field ] = true;
				}
			}

			if ( count( $hits ) === count( $pattern ) ) {
				return true;
			}
		}

		return false;
	}


	/**
	 * Review a comment on its existence in the local spam
	 *
	 * @since  2.0.0
	 * @since  2.5.4
	 *
	 * @param   string $ip    Comment IP.
	 * @param   string $url   Comment URL (optional).
	 * @param   string $email Comment Email (optional).
	 * @return  boolean       True for suspicious comment.
	 */
	private static function _is_db_spam( $ip, $url = '', $email = '' ) {
		global $wpdb;

		$params = array();
		$filter = array();
		if ( ! empty( $url ) ) {
			$filter[] = '`comment_author_url` = %s';
			$params[] = wp_unslash( $url );
		}
		if ( ! empty( $ip ) ) {
			$filter[] = '`comment_author_IP` = %s';
			$params[] = wp_unslash( $ip );
		}

		if ( ! empty( $email ) ) {
			$filter[] = '`comment_author_email` = %s';
			$params[] = wp_unslash( $email );
		}
		if ( empty( $params ) ) {
			return false;
		}

		// phpcs:disable WordPress.DB.PreparedSQL.NotPrepared
		// phpcs:disable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
		$filter_sql = implode( ' OR ', $filter );

		$result = $wpdb->get_var(
			$wpdb->prepare(
				sprintf(
					"SELECT `comment_ID` FROM `$wpdb->comments` WHERE `comment_approved` = 'spam' AND (%s) LIMIT 1",
					$filter_sql
				),
				$params
			)
		);
		// phpcs:enable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
		// phpcs:enable WordPress.DB.PreparedSQL.NotPrepared

		return ! empty( $result );
	}


	/**
	 * Check for country spam by (anonymized) IP
	 *
	 * @since  2.6.9
	 * @since  2.10.0 Make country check API filterable and use iplocate.io instead of ip2country.info
	 *
	 * @param   string $ip IP address.
	 * @return  boolean    True if the comment is spam based on country filter.
	 */
	private static function _is_country_spam( $ip ) {
		$options = self::get_options();

		$allowed = preg_split(
			'/[\s,;]+/',
			$options['country_allowed'],
			-1,
			PREG_SPLIT_NO_EMPTY
		);
		$denied = preg_split(
			'/[\s,;]+/',
			$options['country_denied'],
			-1,
			PREG_SPLIT_NO_EMPTY
		);

		if ( empty( $allowed ) && empty( $denied ) ) {
			return false;
		}

		/**
		 * Filter to hook into the `_is_country_spam` functionality, to implement for example a custom IP check.
		 *
		 * @since 2.10.0
		 *
		 * @param null   $is_country_spam The `is_country_spam` result.
		 * @param string $ip              The IP address.
		 * @param array  $allowed         The list of allowed country codes.
		 * @param array  $denied          The list of denied country codes.
		 *
		 * @return null|boolean The `is_country_spam` result or null.
		 */
		$is_country_spam = apply_filters( 'antispam_bee_is_country_spam', null, $ip, $allowed, $denied );

		if ( is_bool( $is_country_spam ) ) {
			return $is_country_spam;
		}

		/**
		 * Filters the IPLocate API key. With this filter, you can add your own IPLocate API key.
		 *
		 * @since 2.10.0
		 *
		 * @param string  The current IPLocate API key. Default is `null`.
		 *
		 * @return string The changed IPLocate API key or null.
		 */
		$apikey = apply_filters( 'antispam_bee_country_spam_apikey', '' );

		$response = wp_safe_remote_get(
			esc_url_raw(
				sprintf(
					'https://www.iplocate.io/api/lookup/%s?apikey=%s',
					self::_anonymize_ip( $ip ),
					$apikey
				),
				'https'
			)
		);

		if ( is_wp_error( $response ) ) {
			return false;
		}

		if ( wp_remote_retrieve_response_code( $response ) !== 200 ) {
			return false;
		}

		$body = (string) wp_remote_retrieve_body( $response );

		$json = json_decode( $body, true );

		// Check if response is valid json.
		if ( ! is_array( $json ) ) {
			return false;
		}

		if ( empty( $json['country_code'] ) ) {
			return false;
		}

		$country = strtoupper( $json['country_code'] );

		if ( empty( $country ) || strlen( $country ) !== 2 ) {
			return false;
		}

		if ( ! empty( $denied ) ) {
			return ( in_array( $country, $denied, true ) );
		}

		return ( ! in_array( $country, $allowed, true ) );
	}


	/**
	 * Check for BBCode spam
	 *
	 * @since   2.5.1
	 *
	 * @param   string $body Content of a comment.
	 * @return  boolean      True for BBCode in content
	 */
	private static function _is_bbcode_spam( $body ) {
		return (bool) preg_match( '/\[url[=\]].*\[\/url\]/is', $body );
	}


	/**
	 * Check for an already approved e-mail address
	 *
	 * @since  2.0
	 * @since  2.5.1
	 *
	 * @param   string $email E-mail address.
	 * @return  boolean       True for a found entry.
	 */
	private static function _is_approved_email( $email ) {
		global $wpdb;

		$result = $wpdb->get_var(
			$wpdb->prepare(
				"SELECT `comment_ID` FROM `$wpdb->comments` WHERE `comment_approved` = '1' AND `comment_author_email` = %s LIMIT 1",
				wp_unslash( $email )
			)
		);

		if ( $result ) {
			return true;
		}

		return false;
	}

	/**
	 * Check for unwanted languages
	 *
	 * @since  2.0
	 * @since  2.6.6
	 * @since  2.8.2
	 *
	 * @param  string $comment_content Content of the comment.
	 *
	 * @return boolean TRUE if it is spam.
	 */
	private static function _is_lang_spam( $comment_content ) {
		$allowed_lang = (array) self::get_option( 'translate_lang' );

		$comment_text = wp_strip_all_tags( $comment_content );

		if ( empty( $allowed_lang ) || empty( $comment_text ) ) {
			return false;
		}

		/**
		 * Filters the detected language. With this filter, other detection methods can skip in and detect the language.
		 *
		 * @since 2.8.2
		 *
		 * @param null   $detected_lang The detected language.
		 * @param string $comment_text  The text, to detect the language.
		 *
		 * @return null|string The detected language or null.
		 */
		$detected_lang = apply_filters( 'antispam_bee_detected_lang', null, $comment_text );
		if ( null !== $detected_lang ) {
			return ! in_array( $detected_lang, $allowed_lang, true );
		}

		$word_count = 0;
		$text       = trim( preg_replace( "/[\n\r\t ]+/", ' ', $comment_text ), ' ' );

		/*
		 * translators: If your word count is based on single characters (e.g. East Asian characters),
		 * enter 'characters_excluding_spaces' or 'characters_including_spaces'. Otherwise, enter 'words'.
		 * Do not translate into your own language.
		 */
		if ( strpos( _x( 'words', 'Word count type. Do not translate!' ), 'characters' ) === 0 && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) { // phpcs:ignore WordPress.WP.I18n.MissingArgDomain
			preg_match_all( '/./u', $text, $words_array );
			if ( isset( $words_array[0] ) ) {
				$word_count = count( $words_array[0] );
			}
		} else {
			$words_array = preg_split( "/[\n\r\t ]+/", $text, -1, PREG_SPLIT_NO_EMPTY );
			$word_count  = count( $words_array );
		}

		if ( $word_count < 10 ) {
			return false;
		}

		$response = wp_safe_remote_post(
			'https://api.pluginkollektiv.org/language/v1/',
			array( 'body' => wp_json_encode( array( 'body' => $comment_text ) ) )
		);

		if ( is_wp_error( $response )
			|| wp_remote_retrieve_response_code( $response ) !== 200 ) {
			return false;
		}

		$detected_lang = wp_remote_retrieve_body( $response );
		if ( ! $detected_lang ) {
			return false;
		}

		$detected_lang = json_decode( $detected_lang );
		if ( ! $detected_lang || ! isset( $detected_lang->code ) ) {
			return false;
		}

		return ! in_array( self::_map_lang_code( $detected_lang->code ), $allowed_lang, true );
	}

	/**
	 * Map franc language codes
	 *
	 * @since   2.9.0
	 *
	 * @param  string $franc_code The franc code, received from the service.
	 *
	 * @return string             Mapped ISO code
	 */
	private static function _map_lang_code( $franc_code ) {
		$codes = array(
			'zha' => 'za',
			'zho' => 'zh',
			'zul' => 'zu',
			'yid' => 'yi',
			'yor' => 'yo',
			'xho' => 'xh',
			'wln' => 'wa',
			'wol' => 'wo',
			'ven' => 've',
			'vie' => 'vi',
			'vol' => 'vo',
			'uig' => 'ug',
			'ukr' => 'uk',
			'urd' => 'ur',
			'uzb' => 'uz',
			'tah' => 'ty',
			'tam' => 'ta',
			'tat' => 'tt',
			'tel' => 'te',
			'tgk' => 'tg',
			'tgl' => 'tl',
			'tha' => 'th',
			'tir' => 'ti',
			'ton' => 'to',
			'tsn' => 'tn',
			'tso' => 'ts',
			'tuk' => 'tk',
			'tur' => 'tr',
			'twi' => 'tw',
			'sag' => 'sg',
			'san' => 'sa',
			'sin' => 'si',
			'slk' => 'sk',
			'slv' => 'sl',
			'sme' => 'se',
			'smo' => 'sm',
			'sna' => 'sn',
			'snd' => 'sd',
			'som' => 'so',
			'sot' => 'st',
			'spa' => 'es',
			'sqi' => 'sq',
			'srd' => 'sc',
			'srp' => 'sr',
			'ssw' => 'ss',
			'sun' => 'su',
			'swa' => 'sw',
			'swe' => 'sv',
			'roh' => 'rm',
			'ron' => 'ro',
			'run' => 'rn',
			'rus' => 'ru',
			'que' => 'qu',
			'pan' => 'pa',
			'pli' => 'pi',
			'pol' => 'pl',
			'por' => 'pt',
			'pus' => 'ps',
			'oci' => 'oc',
			'oji' => 'oj',
			'ori' => 'or',
			'orm' => 'om',
			'oss' => 'os',
			'nau' => 'na',
			'nav' => 'nv',
			'nbl' => 'nr',
			'nde' => 'nd',
			'ndo' => 'ng',
			'nep' => 'ne',
			'nld' => 'nl',
			'nno' => 'nn',
			'nob' => 'nb',
			'nor' => 'no',
			'nya' => 'ny',
			'mah' => 'mh',
			'mal' => 'ml',
			'mar' => 'mr',
			'mkd' => 'mk',
			'mlg' => 'mg',
			'mlt' => 'mt',
			'mon' => 'mn',
			'mri' => 'mi',
			'msa' => 'ms',
			'mya' => 'my',
			'lao' => 'lo',
			'lat' => 'la',
			'lav' => 'lv',
			'lim' => 'li',
			'lin' => 'ln',
			'lit' => 'lt',
			'ltz' => 'lb',
			'lub' => 'lu',
			'lug' => 'lg',
			'kal' => 'kl',
			'kan' => 'kn',
			'kas' => 'ks',
			'kat' => 'ka',
			'kau' => 'kr',
			'kaz' => 'kk',
			'khm' => 'km',
			'kik' => 'ki',
			'kin' => 'rw',
			'kir' => 'ky',
			'kom' => 'kv',
			'kon' => 'kg',
			'kor' => 'ko',
			'kua' => 'kj',
			'kur' => 'ku',
			'jav' => 'jv',
			'jpn' => 'ja',
			'ibo' => 'ig',
			'ido' => 'io',
			'iii' => 'ii',
			'iku' => 'iu',
			'ile' => 'ie',
			'ina' => 'ia',
			'ind' => 'id',
			'ipk' => 'ik',
			'isl' => 'is',
			'ita' => 'it',
			'hat' => 'ht',
			'hau' => 'ha',
			'hbs' => 'sh',
			'heb' => 'he',
			'her' => 'hz',
			'hin' => 'hi',
			'hmo' => 'ho',
			'hrv' => 'hr',
			'hun' => 'hu',
			'hye' => 'hy',
			'gla' => 'gd',
			'gle' => 'ga',
			'glg' => 'gl',
			'glv' => 'gv',
			'grn' => 'gn',
			'guj' => 'gu',
			'fao' => 'fo',
			'fas' => 'fa',
			'fij' => 'fj',
			'fin' => 'fi',
			'fra' => 'fr',
			'fry' => 'fy',
			'ful' => 'ff',
			'ell' => 'el',
			'eng' => 'en',
			'epo' => 'eo',
			'est' => 'et',
			'eus' => 'eu',
			'ewe' => 'ee',
			'dan' => 'da',
			'deu' => 'de',
			'div' => 'dv',
			'dzo' => 'dz',
			'cat' => 'ca',
			'ces' => 'cs',
			'cha' => 'ch',
			'che' => 'ce',
			'chu' => 'cu',
			'chv' => 'cv',
			'cor' => 'kw',
			'cos' => 'co',
			'cre' => 'cr',
			'cym' => 'cy',
			'bak' => 'ba',
			'bam' => 'bm',
			'bel' => 'be',
			'ben' => 'bn',
			'bis' => 'bi',
			'bod' => 'bo',
			'bos' => 'bs',
			'bre' => 'br',
			'bul' => 'bg',
			'aar' => 'aa',
			'abk' => 'ab',
			'afr' => 'af',
			'aka' => 'ak',
			'amh' => 'am',
			'ara' => 'ar',
			'arg' => 'an',
			'asm' => 'as',
			'ava' => 'av',
			'ave' => 'ae',
			'aym' => 'ay',
			'aze' => 'az',
			'nds' => 'de',
		);

		if ( array_key_exists( $franc_code, $codes ) ) {
			return $codes[ $franc_code ];
		}

		return $franc_code;
	}

	/**
	 * Trim IP addresses
	 *
	 * @since  0.1
	 * @since  2.5.1
	 *
	 * @param   string  $ip       Original IP.
	 * @param   boolean $cut_end  Shortening the end.
	 * @return  string            Shortened IP.
	 */
	private static function _cut_ip( $ip, $cut_end = true ) {
		$separator = ( self::_is_ipv4( $ip ) ? '.' : ':' );

		return str_replace(
			( $cut_end ? strrchr( $ip, $separator ) : strstr( $ip, $separator ) ),
			'',
			$ip
		);
	}


	/**
	 * Anonymize the IP addresses
	 *
	 * @since   2.5.1
	 *
	 * @param   string $ip Original IP.
	 * @return  string     Anonymous IP.
	 */
	private static function _anonymize_ip( $ip ) {
		if ( self::_is_ipv4( $ip ) ) {
			return self::_cut_ip( $ip ) . '.0';
		}

		return self::_cut_ip( $ip, false ) . ':0:0:0:0:0:0:0';
	}


	/**
	 * Rotates the IP address
	 *
	 * @since   2.4.5
	 *
	 * @param   string $ip  IP address.
	 * @return  string      Turned IP address.
	 */
	private static function _reverse_ip( $ip ) {
		return implode(
			'.',
			array_reverse(
				explode(
					'.',
					$ip
				)
			)
		);
	}


	/**
	 * Check for an IPv4 address
	 *
	 * @since  2.4
	 * @since  2.6.4
	 *
	 * @param   string $ip  IP to validate.
	 * @return  integer       TRUE if IPv4.
	 */
	private static function _is_ipv4( $ip ) {
		if ( function_exists( 'filter_var' ) ) {
			return filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) !== false;
		} else {
			return preg_match( '/^\d{1,3}(\.\d{1,3}){3}$/', $ip );
		}
	}


	/**
	 * Check for an IPv6 address
	 *
	 * @since  2.6.2
	 * @since  2.6.4
	 *
	 * @param   string $ip  IP to validate.
	 * @return  boolean       TRUE if IPv6.
	 */
	private static function _is_ipv6( $ip ) {
		if ( function_exists( 'filter_var' ) ) {
			return filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6 ) !== false;
		} else {
			return ! self::_is_ipv4( $ip );
		}
	}


	/**
	 * Testing on mobile devices
	 *
	 * @since  0.1
	 * @since  2.4
	 *
	 * @return  boolean  TRUE if "wptouch" is active
	 */
	private static function _is_mobile() {
		return strpos( get_template_directory(), 'wptouch' );
	}

	/**
	 * Testing if we are on an AMP site.
	 *
	 * Starting with v2.0, amp_is_request() is the preferred method to check,
	 * but we fall back to the then deprecated is_amp_endpoint() as needed.
	 *
	 * @return bool
	 */
	private static function _is_amp() {
		return ( function_exists( 'amp_is_request' ) && amp_is_request() ) || ( function_exists( 'is_amp_endpoint' ) && is_amp_endpoint() );
	}



	/*
	*   ############################
	*   #####  SPAM-TREATMENT  #####
	*   ############################
	*/

	/**
	 * Execution of the delete/marking process
	 *
	 * @since  0.1
	 * @since  2.6.0
	 *
	 * @param   array   $comment  Untreated commentary data.
	 * @param   string  $reason   Reason for suspicion.
	 * @param   boolean $is_ping  Ping (optional).
	 * @return  array   $comment  Treated commentary data.
	 */
	private static function _handle_spam_request( $comment, $reason, $is_ping = false ) {

		$options = self::get_options();

		$spam_remove = ! $options['flag_spam'];
		$spam_notice = ! $options['no_notice'];

		// Filter settings.
		$ignore_filter = $options['ignore_filter'];
		$ignore_type   = $options['ignore_type'];
		$ignore_reason = in_array( $reason, (array) $options['ignore_reasons'], true );

		// Remember spam.
		self::_update_spam_log( $comment );
		self::_update_spam_count();
		self::_update_daily_stats();

		// Delete spam.
		if ( $spam_remove ) {
			self::_go_in_peace();
		}

		if ( $ignore_filter && ( ( 1 === (int) $ignore_type && $is_ping ) || ( 2 === (int) $ignore_type && ! $is_ping ) ) ) {
			self::_go_in_peace();
		}

		// Spam reason.
		if ( $ignore_reason ) {
			self::_go_in_peace();
		}
		self::$_reason = $reason;

		// Mark spam.
		add_filter(
			'pre_comment_approved',
			array(
				__CLASS__,
				'return_spam',
			)
		);

		// Send e-mail.
		add_action(
			'comment_post',
			array(
				__CLASS__,
				'send_mail_notification',
			)
		);

		// Spam reason as comment meta.
		if ( $spam_notice ) {
			add_action(
				'comment_post',
				array(
					__CLASS__,
					'add_spam_reason_to_comment',
				)
			);
		}

		return $comment;
	}


	/**
	 * Logfile with detected spam
	 *
	 * @since  2.5.7
	 * @since  2.6.1
	 *
	 * @param   array $comment Array with commentary data.
	 * @return  mixed        FALSE in case of error
	 */
	private static function _update_spam_log( $comment ) {
		if ( ! defined( 'ANTISPAM_BEE_LOG_FILE' ) || ! ANTISPAM_BEE_LOG_FILE || ! is_writable( ANTISPAM_BEE_LOG_FILE ) || validate_file( ANTISPAM_BEE_LOG_FILE ) === 1 ) {
			return false;
		}

		$entry = sprintf(
			'%s comment for post=%d from host=%s marked as spam%s',
			current_time( 'mysql' ),
			$comment['comment_post_ID'],
			$comment['comment_author_IP'],
			PHP_EOL
		);

		file_put_contents(
			ANTISPAM_BEE_LOG_FILE,
			$entry,
			FILE_APPEND | LOCK_EX
		);
	}


	/**
	 * Sends the 403 header and terminates the connection
	 *
	 * @since   2.5.6
	 */
	private static function _go_in_peace() {
		status_header( 403 );
		die( 'Spam deleted.' );
	}


	/**
	 * Return real client IP
	 *
	 * @since   2.6.1
	 * @since   2.11.4 Only use `REMOTE_ADDR` to get the IP, make it filterable with `pre_comment_user_ip`
	 * @since   2.11.5 Switch to own filter `antispam_bee_trusted_ip`
	 *
	 * @hook    string  pre_comment_user_ip  The Client IP
	 *
	 * @return  string  $ip  Client IP
	 */
	public static function get_client_ip() {
		/**
		 * Hook for allowing to modify the client IP used by Antispam Bee. Default value is the `REMOTE_ADDR`.
		 * IMPORTANT: Don’t return an empty string here, otherwise all comments are marked as spam.
		 *
		 * @link https://developer.wordpress.org/reference/hooks/pre_comment_user_ip/
		 *
		 * @return string
		 */
		// phpcs:disable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
		// phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotValidated
		// phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
		return self::_sanitize_ip( (string) apply_filters( 'antispam_bee_trusted_ip', wp_unslash( $_SERVER['REMOTE_ADDR'] ) ) );
		// phpcs:enable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
		// phpcs:enable WordPress.Security.ValidatedSanitizedInput.InputNotValidated
		// phpcs:enable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
	}

	/**
	 * Sanitize an IP string.
	 *
	 * @param string $raw_ip The raw IP.
	 *
	 * @return string The sanitized IP or an empty string.
	 */
	private static function _sanitize_ip( $raw_ip ) {

		if ( strpos( $raw_ip, ',' ) !== false ) {
			$ips    = explode( ',', $raw_ip );
			$raw_ip = trim( $ips[0] );
		}
		if ( function_exists( 'filter_var' ) ) {
			return (string) filter_var(
				$raw_ip,
				FILTER_VALIDATE_IP
			);
		}

		return (string) preg_replace(
			'/[^0-9a-f:. ]/si',
			'',
			$raw_ip
		);
	}


	/**
	 * Add spam reason as comment data
	 *
	 * @since   2.6.0
	 *
	 * @param   integer $comment_id  Comment ID.
	 */
	public static function add_spam_reason_to_comment( $comment_id ) {
		add_comment_meta(
			$comment_id,
			'antispam_bee_reason',
			self::$_reason
		);
	}


	/**
	 * Delete spam reason as comment data
	 *
	 * @since   2.6.0
	 *
	 * @param   integer $comment_id  Comment ID.
	 */
	public static function delete_spam_reason_by_comment( $comment_id ) {
		delete_comment_meta(
			$comment_id,
			'antispam_bee_reason'
		);
	}

	/**
	 * Updates the Antispam Bee reason for manual transitions
	 *
	 * @since   2.9.2
	 * @param  WP_Comment $comment Comment Object.
	 */
	public static function update_antispam_bee_reason( $comment ) {
		update_comment_meta( $comment->comment_ID, 'antispam_bee_reason', 'manually' );
	}


	/**
	 * Get the current post ID.
	 *
	 * @since   2.7.1
	 */
	public static function populate_post_id() {

		if ( null === self::$_current_post_id ) {
			self::$_current_post_id = get_the_ID();
		}
	}


	/**
	 * Send notification via e-mail
	 *
	 * @since  0.1
	 * @since  2.5.7
	 * @since  2.10.0 Change plugin website URL
	 *
	 * @hook    string  antispam_bee_notification_subject  Custom subject for notification mails
	 *
	 * @param   int $id  ID of the comment.
	 * @return  int  $id  ID of the comment.
	 */
	public static function send_mail_notification( $id ) {
		$options = self::get_options();

		if ( ! $options['email_notify'] ) {
			return $id;
		}

		$comment = get_comment( $id, ARRAY_A );

		if ( empty( $comment ) ) {
			return $id;
		}

		$post = get_post( $comment['comment_post_ID'] );
		if ( ! $post ) {
			return $id;
		}

		self::load_plugin_lang();
		self::add_reasons_to_defaults();

		$subject = sprintf(
			'[%s] %s',
			stripslashes_deep(
				// phpcs:ignore PHPCompatibility.ParameterValues.NewHTMLEntitiesEncodingDefault.NotSet
				html_entity_decode(
					get_bloginfo( 'name' ),
					ENT_QUOTES
				)
			),
			esc_html__( 'Comment marked as spam', 'antispam-bee' )
		);

		// Content.
		$content = strip_tags( stripslashes( $comment['comment_content'] ) );
		if ( ! $content ) {
			$content = sprintf(
				'-- %s --',
				esc_html__( 'Content removed by Antispam Bee', 'antispam-bee' )
			);
		}

		// Prepare Comment Type.
		$comment_name = __( 'Comment', 'antispam-bee' );
		if ( 'trackback' === $comment['comment_type'] ) {
			$comment_name = __( 'Trackback', 'antispam-bee' );
		}
		if ( 'pingback' === $comment['comment_type'] ) {
			$comment_name = __( 'Pingback', 'antispam-bee' );
		}

		// Body.
		$body = sprintf(
			"%s \"%s\"\r\n\r\n",
			esc_html__( 'New spam comment on your post', 'antispam-bee' ),
			strip_tags( $post->post_title )
		) . sprintf(
			"%s: %s\r\n",
			esc_html__( 'Author', 'antispam-bee' ),
			( empty( $comment['comment_author'] ) ? '' : strip_tags( $comment['comment_author'] ) )
		) . sprintf(
			"URL: %s\r\n",
			// empty check exists.
			esc_url( $comment['comment_author_url'] )
		) . sprintf(
			"%s: %s\r\n",
			esc_html__( 'Type', 'antispam-bee' ),
			esc_html( $comment_name )
		) . sprintf(
			"Whois: http://whois.arin.net/rest/ip/%s\r\n",
			$comment['comment_author_IP']
		) . sprintf(
			"%s: %s\r\n\r\n",
			esc_html__( 'Spam Reason', 'antispam-bee' ),
			esc_html( self::$defaults['reasons'][ self::$_reason ] )
		) . sprintf(
			"%s\r\n\r\n\r\n",
			$content
		) . (
			EMPTY_TRASH_DAYS ? (
				sprintf(
					"%s: %s\r\n",
					esc_html__( 'Trash it', 'antispam-bee' ),
					admin_url( 'comment.php?action=trash&c=' . $id )
				)
			) : (
				sprintf(
					"%s: %s\r\n",
					esc_html__( 'Delete it', 'antispam-bee' ),
					admin_url( 'comment.php?action=delete&c=' . $id )
				)
			)
		) . sprintf(
			"%s: %s\r\n",
			esc_html__( 'Approve it', 'antispam-bee' ),
			admin_url( 'comment.php?action=approve&c=' . $id )
		) . sprintf(
			"%s: %s\r\n\r\n",
			esc_html__( 'Spam list', 'antispam-bee' ),
			admin_url( 'edit-comments.php?comment_status=spam' )
		) . sprintf(
			"%s\r\n%s\r\n",
			esc_html__( 'Notify message by Antispam Bee', 'antispam-bee' ),
			esc_html__( 'https://antispambee.pluginkollektiv.org/', 'antispam-bee' )
		);

		wp_mail(
			/**
			 * Filters the recipients of the spam notification.
			 *
			 * @param array The recipients array.
			 */
			apply_filters(
				'antispam_bee_notification_recipients',
				array( get_bloginfo( 'admin_email' ) )
			),
			/**
			 * Filters the subject of the spam notification.
			 *
			 * @param string $subject subject line.
			 */
			apply_filters(
				'antispam_bee_notification_subject',
				$subject
			),
			$body
		);

		return $id;
	}



	/*
	*   ############################
	*   #######  STATISTICS  #######
	*   ############################
	*/

	/**
	 * Return the number of spam comments
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	private static function _get_spam_count() {
		// Init.
		$count = intval( self::get_option( 'spam_count' ) );

		// Fire.
		return ( get_locale() === 'de_DE' ? number_format( $count, 0, '', '.' ) : number_format_i18n( $count ) );
	}


	/**
	 * Output the number of spam comments
	 *
	 * @since  0.1
	 * @since  2.4
	 */
	public static function the_spam_count() {
		echo esc_html( self::_get_spam_count() );
	}


	/**
	 * Update the number of spam comments
	 *
	 * @since  0.1
	 * @since  2.6.1
	 */
	private static function _update_spam_count() {
		// Skip if not enabled.
		if ( ! self::get_option( 'dashboard_count' ) ) {
			return;
		}

		self::_update_option(
			'spam_count',
			intval( self::get_option( 'spam_count' ) + 1 )
		);
	}

	/**
	 * Update statistics
	 *
	 * @since  1.9
	 * @since  2.6.1
	 */
	private static function _update_daily_stats() {
		// Skip if not enabled.
		if ( ! self::get_option( 'dashboard_chart' ) ) {
			return;
		}

		// Init.
		$stats = (array) self::get_option( 'daily_stats' );
		$today = (int) strtotime( 'today' );

		// Count up.
		if ( array_key_exists( $today, $stats ) ) {
			$stats[ $today ] ++;
		} else {
			$stats[ $today ] = 1;
		}

		// Sort.
		krsort( $stats, SORT_NUMERIC );

		// Save.
		self::_update_option(
			'daily_stats',
			array_slice( $stats, 0, 31, true )
		);
	}

	/**
	 * Returns the secret of a post used in the textarea name attribute.
	 *
	 * @since 2.10.0 Modify secret generation because `always_allowed` option not longer exists
	 *
	 * @param int $post_id The Post ID.
	 *
	 * @return string
	 */
	public static function get_secret_name_for_post( $post_id ) {
		$secret = substr( sha1( md5( 'comment-id' . self::$_salt ) ), 0, 10 );

		$secret = self::ensure_secret_starts_with_letter( $secret );

		/**
		 * Filters the secret for a post, which is used in the textarea name attribute.
		 *
		 * @param string $secret The secret.
		 * @param int    $post_id The post ID.
		 * @param bool   $always_allowed Whether the comment form is used outside of the single post view or not.
		 */
		return apply_filters(
			'ab_get_secret_name_for_post',
			$secret,
			(int) $post_id,
			(bool) self::get_option( 'always_allowed' )
		);

	}

	/**
	 * Returns the secret of a post used in the textarea id attribute.
	 *
	 * @since 2.10.0 Modify secret generation because `always_allowed` option not longer exists
	 *
	 * @param int $post_id The post ID.
	 *
	 * @return string
	 */
	public static function get_secret_id_for_post( $post_id ) {

		$secret = substr( sha1( md5( 'comment-id' . self::$_salt ) ), 0, 10 );

		$secret = self::ensure_secret_starts_with_letter( $secret );

		/**
		 * Filters the secret for a post, which is used in the textarea id attribute.
		 *
		 * @param string $secret The secret.
		 * @param int    $post_id The post ID.
		 * @param bool   $always_allowed Whether the comment form is used outside of the single post view or not.
		 */
		return apply_filters(
			'ab_get_secret_id_for_post',
			$secret,
			(int) $post_id,
			(bool) self::get_option( 'always_allowed' )
		);
	}

	/**
	 * Ensures that the secret starts with a letter.
	 *
	 * @param string $secret The secret.
	 *
	 * @return string
	 */
	public static function ensure_secret_starts_with_letter( $secret ) {

		$first_char = substr( $secret, 0, 1 );
		if ( is_numeric( $first_char ) ) {
			return chr( $first_char + 97 ) . substr( $secret, 1 );
		} else {
			return $secret;
		}
	}

	/**
	 * Returns 'spam'
	 *
	 * @since 2.7.3
	 *
	 * @return string
	 */
	public static function return_spam() {

		return 'spam';
	}

	/**
	 * A wrapper around wp_parse_url().
	 *
	 * @since 2.8.2
	 *
	 * @param string $url The URL to parse.
	 * @param string $component The component to get back.
	 *
	 * @return string
	 */
	private static function parse_url( $url, $component = 'host' ) {

		$parts = wp_parse_url( $url );
		return ( is_array( $parts ) && isset( $parts[ $component ] ) ) ? $parts[ $component ] : '';
	}

	/**
	 * Updates the database structure if necessary
	 *
	 * @since 2.10.0 Add update routine for country option names
	 */
	public static function update_database() {
		if ( self::db_version_is_current() ) {
			return;
		}

		$version_from_db = floatval( get_option( 'antispambee_db_version', 0 ) );
		if ( $version_from_db < 1.01 ) {
			global $wpdb;

			/**
			 * In Version 2.9 the IP of the commenter was saved as a hash. We reverted this solution.
			 * Therefore, we need to delete this unused data.
			 */
			//phpcs:disable WordPress.DB.PreparedSQL.NotPrepared
			$sql = 'delete from `' . $wpdb->commentmeta . '` where `meta_key` IN ("antispam_bee_iphash")';
			$wpdb->query( $sql );
			//phpcs:enable WordPress.DB.PreparedSQL.NotPrepared
		}

		// DB version was raised in ASB 2.10.0 to 1.02.
		if ( $version_from_db < 1.02 ) {
			// Update option names.
			$options = self::get_options();
			if ( isset( $options['country_black'] ) ) {
				$options['country_denied'] = $options['country_black'];
				unset( $options['country_black'] );
			}
			if ( isset( $options['country_white'] ) ) {
				$options['country_allowed'] = $options['country_white'];
				unset( $options['country_white'] );
			}

			update_option(
				'antispam_bee',
				$options
			);

			wp_cache_set(
				'antispam_bee',
				$options
			);
		}

		update_option( 'antispambee_db_version', self::$db_version );
	}

	/**
	 * Whether the database structure is up to date.
	 *
	 * @since  2.10.0 Return a float instead of int
	 *
	 * @return bool
	 */
	private static function db_version_is_current() {

		$current_version = floatval( get_option( 'antispambee_db_version', 0 ) );
		return $current_version === self::$db_version;

	}

	/**
	 * Runs after upgrades are completed.
	 *
	 * @since 2.10.0
	 *
	 * @param \WP_Upgrader $wp_upgrader WP_Upgrader instance.
	 * @param array        $hook_extra Array of bulk item update data.
	 */
	public static function upgrades_completed( $wp_upgrader, $hook_extra ) {
		if ( ! $wp_upgrader instanceof Plugin_Upgrader || ! isset( $hook_extra['plugins'] ) ) {
			return;
		}

		$updated_plugins = $hook_extra['plugins'];
		$asb_updated = false;
		foreach ( $updated_plugins as $updated_plugin ) {
			if ( $updated_plugin !== self::$_base ) {
				continue;
			}
			$asb_updated = true;
		}

		if ( false === $asb_updated ) {
			return;
		}

		self::asb_updated();
	}

	/**
	 * Runs after an upgrade via an uploaded ZIP package was completed.
	 *
	 * @since 2.10.0
	 *
	 * @param string $package The package file.
	 * @param array  $data The new plugin or theme data.
	 * @param string $package_type The package type.
	 */
	public static function uploaded_upgrade_completed( $package, $data, $package_type ) {
		if ( 'plugin' !== $package_type ) {
			return;
		}

		$text_domain = isset( $data['TextDomain'] ) ? $data['TextDomain'] : '';

		if ( 'antispam-bee' !== $text_domain ) {
			return;
		}

		self::asb_updated();
	}

	/**
	 * Runs after ASB was updated.
	 *
	 * @since 2.10.0
	 *
	 * @return void
	 */
	private static function asb_updated() {
		self::update_database();
	}
}


// Fire.
add_action(
	'plugins_loaded',
	array(
		'Antispam_Bee',
		'init',
	)
);

// Activation.
register_activation_hook(
	__FILE__,
	array(
		'Antispam_Bee',
		'activate',
	)
);

// Deactivation.
register_deactivation_hook(
	__FILE__,
	array(
		'Antispam_Bee',
		'deactivate',
	)
);

// Uninstall.
register_uninstall_hook(
	__FILE__,
	array(
		'Antispam_Bee',
		'uninstall',
	)
);

// Upgrade notice.
add_action(
	'in_plugin_update_message-' . __FILE__,
	array(
		'Antispam_Bee',
		'upgrade_notice',
	)
);
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		<h1 class="entry-title">P0R CUARTA VEZ HALLAN RESTOS ÓSEOS DE HUMANOS EN LAGO DE EU </h1>		<div class="post-cats-list">
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			<span class="posted-on"><a href="http://www.elsinodaldetamaulipas.com.mx/?p=109703" rel="bookmark"><time class="entry-date published" datetime="2022-08-08T10:59:44-04:00">8 de agosto de 2022</time><time class="updated" datetime="2022-08-08T10:59:49-04:00">8 de agosto de 2022</time></a></span><span class="byline"><span class="author vcard"><a class="url fn n" href="http://www.elsinodaldetamaulipas.com.mx/?author=1">elsinodal</a></span></span>		</div><!-- .entry-meta -->
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<ul><li><strong><em>La sequía hace hallazgos macabros en Las Vegas </em></strong></li></ul>



<p><strong><em>EL SINODAL DE TAMAULIPAS&nbsp;</em></strong></p>



<p>Las Vegas, Estados Unidos.- Las autoridades localizaron más restos humanos en la recreativa del Lago Mead al este de Las Vegas, esto se dio debido al bajo nivel del agua, debido a la sequía que golpea a la región. </p>



<p>Sería la cuarta vez que se descubren restos humanos en la zona, en momentos en que la sequía que afecta al oeste de Estados Unidos hace bajar las aguas en el río Colorado, detrás de la Represa Hoover. </p>



<p>Al encontrarse restos óseos en Swim Beach, funcionarios del Servicio Guardabosques fueron convocados al lugar que se ubica en la frontera entre Nevada y Arizona. Posteriormente un equipo policial y de rescate fue para extraer los restos. </p>



<p>Las autoridades informaron que trabajarán en establecer la causa de muertes, y al mismo tiempo escudriñarán registros sobre personas desaparecidas. </p>



<p>Cabe recordar que el pasado 1 de mayo fue encontrado un barril con restos humanos cerca de Hemenway Harbor. </p>



<p>La policía maneja la hipótesis que se trata de un hombre que murió baleado, y su cuerpo fue arrojado en el lugar entre mediados de los setenta e inicios de los ochenta. </p>



<p>Además, pocos días después fueron hallados restos esqueléticos en Calville Bay, así como también el 25 de julio, en Boulder Beach. La policía ha especulado que al ceder más las aguas se descubrirán más restos. </p>



<p>Tras estos hallazgos han surgido teorías sobre casos antiguos de personas desaparecidas o asesinadas, quizás vinculados al crimen organizado y a la fundación de la ciudad de Las Vegas, que está a apenas 30 minutos en carro del lago. </p>



<p>Cabe resaltar que las aguas del lago han caído más de 52 metros (170 pies) desde la última vez que el embalse estaba lleno, en 1983.&nbsp;</p>



<p>La caída de las aguas ocurre en momentos en un creciente número de estudios científicos apuntan a que el planeta se está calentando, principalmente debido al aumento de los niveles de dióxido de carbono y otros gases que quedan atrapados en la atmósfera.&nbsp;</p>
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