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✏️ Editing: DebugEvents.php

<?php

namespace WPMailSMTP\Admin\DebugEvents;

use WPMailSMTP\Admin\Area;
use WPMailSMTP\Options;

/**
 * Debug Events class.
 *
 * @since 3.0.0
 */
class DebugEvents {

/**
	 * Register hooks.
	 *
	 * @since 3.0.0
	 */
	public function hooks() {

// Process AJAX requests.
		add_action( 'wp_ajax_wp_mail_smtp_debug_event_preview', [ $this, 'process_ajax_debug_event_preview' ] );
		add_action( 'wp_ajax_wp_mail_smtp_delete_all_debug_events', [ $this, 'process_ajax_delete_all_debug_events' ] );

// Initialize screen options for the Debug Events page.
		add_action( 'load-wp-mail-smtp_page_wp-mail-smtp-tools', [ $this, 'screen_options' ] );
		add_filter( 'set-screen-option', [ $this, 'set_screen_options' ], 10, 3 );
		add_filter( 'set_screen_option_wp_mail_smtp_debug_events_per_page', [ $this, 'set_screen_options' ], 10, 3 );
	}

/**
	 * Process AJAX request for deleting all debug event entries.
	 *
	 * @since 3.0.0
	 */
	public function process_ajax_delete_all_debug_events() {

if ( ! wp_verify_nonce( $_POST['nonce'], 'wp_mail_smtp_debug_events' ) ) { // phpcs:ignore
			wp_send_json_error( esc_html__( 'Access rejected.', 'wp-mail-smtp' ) );
		}

if ( ! current_user_can( 'manage_options' ) ) {
			wp_send_json_error( esc_html__( 'You don\'t have the capability to perform this action.', 'wp-mail-smtp' ) );
		}

global $wpdb;

$table = self::get_table_name();

$sql = "TRUNCATE TABLE `$table`;";

$result = $wpdb->query( $sql ); // phpcs:ignore

if ( $result !== false ) {
			wp_send_json_success( esc_html__( 'All debug event entries were deleted successfully.', 'wp-mail-smtp' ) );
		}

wp_send_json_error(
			sprintf( /* translators: %s - WPDB error message. */
				esc_html__( 'There was an issue while trying to delete all debug event entries. Error message: %s', 'wp-mail-smtp' ),
				$wpdb->last_error
			)
		);
	}

/**
	 * Process AJAX request for debug event preview.
	 *
	 * @since 3.0.0
	 */
	public function process_ajax_debug_event_preview() {

if ( ! wp_verify_nonce( $_POST['nonce'], 'wp_mail_smtp_debug_events' ) ) { // phpcs:ignore
			wp_send_json_error( esc_html__( 'Access rejected.', 'wp-mail-smtp' ) );
		}

if ( ! current_user_can( 'manage_options' ) ) {
			wp_send_json_error( esc_html__( 'You don\'t have the capability to perform this action.', 'wp-mail-smtp' ) );
		}

$event_id = isset( $_POST['id'] ) ? intval( $_POST['id'] ) : false;

if ( empty( $event_id ) ) {
			wp_send_json_error( esc_html__( 'No Debug Event ID provided!', 'wp-mail-smtp' ) );
		}

$event = new Event( $event_id );

wp_send_json_success(
			[
				'title'   => $event->get_title(),
				'content' => $event->get_details_html(),
			]
		);
	}

/**
	 * Add the debug event to the DB.
	 *
	 * @since 3.0.0
	 *
	 * @param string $message The event's message.
	 * @param int    $type    The event's type.
	 *
	 * @return bool|int
	 */
	public static function add( $message = '', $type = 0 ) {

if ( ! in_array( $type, array_keys( Event::get_types() ), true ) ) {
			return false;
		}

if ( $type === Event::TYPE_DEBUG && ! self::is_debug_enabled() ) {
			return false;
		}

try {
			$event = new Event();
			$event->set_type( $type );
			$event->set_content( $message );
			$event->set_initiator();

return $event->save()->get_id();
		} catch ( \Exception $exception ) {
			return false;
		}
	}

/**
	 * Save the debug message.
	 *
	 * @since 3.0.0
	 *
	 * @param string $message The debug message.
	 */
	public static function add_debug( $message = '' ) {

self::add( $message, Event::TYPE_DEBUG );
	}

/**
	 * Get the debug message from the provided debug event IDs.
	 *
	 * @since 3.0.0
	 *
	 * @param array|string|int $ids A single or a list of debug event IDs.
	 *
	 * @return array
	 */
	public static function get_debug_messages( $ids ) {

global $wpdb;

if ( empty( $ids ) ) {
			return [];
		}

if ( ! self::is_valid_db() ) {
			return [];
		}

// Convert to a string.
		if ( is_array( $ids ) ) {
			$ids = implode( ',', $ids );
		}

$ids          = explode( ',', (string) $ids );
		$ids          = array_map( 'intval', $ids );
		$placeholders = implode( ', ', array_fill( 0, count( $ids ), '%d' ) );

$table = self::get_table_name();

// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare
		$events_data = $wpdb->get_results(
			$wpdb->prepare( "SELECT id, content, initiator, event_type, created_at  FROM {$table} WHERE id IN ( {$placeholders} )", $ids )
		);
		// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare

if ( empty( $events_data ) ) {
			return [];
		}

return array_map(
			function ( $event_item ) {
				$event = new Event( $event_item );

return $event->get_short_details();
			},
			$events_data
		);
	}

/**
	 * Register the screen options for the debug events page.
	 *
	 * @since 3.0.0
	 */
	public function screen_options() {

$screen = get_current_screen();

if (
			! is_object( $screen ) ||
			strpos( $screen->id, 'wp-mail-smtp_page_wp-mail-smtp-tools' ) === false ||
			( isset( $_GET['tab'] ) && $_GET['tab'] !== 'debug-events' ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		) {
			return;
		}

add_screen_option(
			'per_page',
			[
				'label'   => esc_html__( 'Number of events per page:', 'wp-mail-smtp' ),
				'option'  => 'wp_mail_smtp_debug_events_per_page',
				'default' => EventsCollection::PER_PAGE,
			]
		);
	}

/**
	 * Set the screen options for the debug events page.
	 *
	 * @since 3.0.0
	 *
	 * @param bool   $keep   Whether to save or skip saving the screen option value.
	 * @param string $option The option name.
	 * @param int    $value  The number of items to use.
	 *
	 * @return bool|int
	 */
	public function set_screen_options( $keep, $option, $value ) {

if ( 'wp_mail_smtp_debug_events_per_page' === $option ) {
			return (int) $value;
		}

return $keep;
	}

/**
	 * Whether the email debug for debug events is enabled or not.
	 *
	 * @since 3.0.0
	 *
	 * @return bool
	 */
	public static function is_debug_enabled() {

return (bool) Options::init()->get( 'debug_events', 'email_debug' );
	}

/**
	 * Get the debug events page URL.
	 *
	 * @since 3.0.0
	 *
	 * @return string
	 */
	public static function get_page_url() {

return add_query_arg(
			[
				'tab' => 'debug-events',
			],
			wp_mail_smtp()->get_admin()->get_admin_page_url( Area::SLUG . '-tools' )
		);
	}

/**
	 * Get the DB table name.
	 *
	 * @since 3.0.0
	 *
	 * @return string Table name, prefixed.
	 */
	public static function get_table_name() {

global $wpdb;

return $wpdb->prefix . 'wpmailsmtp_debug_events';
	}

/**
	 * Whether the DB table exists.
	 *
	 * @since 3.0.0
	 *
	 * @return bool
	 */
	public static function is_valid_db() {

global $wpdb;

$table = self::get_table_name();

return (bool) $wpdb->get_var( $wpdb->prepare( 'SHOW TABLES LIKE %s;', $table ) ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.NoCaching
	}
}

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