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<?php
namespace YayMail\Models;
use YayMail\Migrations\AbstractMigration;
use YayMail\Utils\SingletonTrait;
use YayMail\Utils\Logger;
use YayMail\Migrations\MainMigration;
use YayMail\Migrations\MigrationHelper;
/**
* Migration Model
*
* @method static MigrationModel get_instance()
*/
class MigrationModel {
use SingletonTrait;
/** @var Logger */
private $logger;
private function __construct() {
$this->logger = new Logger();
}
public function get_onload_data() {
return [
'required_migrations' => $this->get_required_migration_names(),
'backups' => $this->get_backups(),
];
}
public function migrate() {
$is_migration_succeeded = MainMigration::get_instance()->migrate();
if ( ! $is_migration_succeeded ) {
throw new \Exception( esc_html__( 'Migration failed, please contact our Customer Support for help!', 'yaymail' ), 500 );
}
return [ 'is_critical_migration_required' => $this->check_if_critical_migration_required() ];
}
/**
* Restore backup
*
* @param string $backup_name
*
* @return boolean is_critical_migration_required
*/
public function reset( $backup_name ) {
global $wpdb;
$backup = get_option( $backup_name, null );
if ( ! $backup ) {
throw new \Exception( 'Back up does not exist', 500 );
}
try {
$wpdb->query( 'START TRANSACTION' );
$this->logger->log( '***** Start reset transaction ****' );
$this->logger->log( "Backup name: $backup_name" );
// Get IDs of posts to be deleted
$post_ids_to_delete = $wpdb->get_col(
$wpdb->prepare(
"SELECT ID FROM {$wpdb->posts} WHERE post_type = %s",
'yaymail_template'
)
);
if ( $post_ids_to_delete ) {
// Delete current post meta data
$delete_postmeta_query = sprintf(
"DELETE FROM {$wpdb->postmeta} WHERE post_id IN (%s)",
implode( ',', array_map( 'intval', $post_ids_to_delete ) )
);
$this->logger->log( $delete_postmeta_query );
$wpdb->query( $delete_postmeta_query );// phpcs:ignore
// Delete the posts
$delete_template_posts_query = sprintf(
"DELETE FROM {$wpdb->posts} WHERE ID IN (%s)",
implode( ',', array_map( 'intval', $post_ids_to_delete ) )
);
$this->logger->log( $delete_template_posts_query );
$wpdb->query( $delete_template_posts_query );// phpcs:ignore
}
$delete_template_posts_query = $wpdb->prepare(
"DELETE FROM {$wpdb->posts} WHERE post_type = %s",
'yaymail_template'
);
$this->logger->log( $delete_template_posts_query );
$wpdb->query( $delete_template_posts_query );// phpcs:ignore
// Restore the backed-up posts
$backed_up_posts = $backup['posts'];
$backed_up_postmeta = $backup['postmeta'];
foreach ( $backed_up_posts as $post ) {
$wpdb->insert(
$wpdb->posts,
[
'post_author' => $post->post_author,
'post_date' => $post->post_date,
'post_date_gmt' => $post->post_date_gmt,
'post_content' => $post->post_content,
'post_title' => $post->post_title,
'post_excerpt' => $post->post_excerpt,
'post_status' => $post->post_status,
'comment_status' => $post->comment_status,
'ping_status' => $post->ping_status,
'post_password' => $post->post_password,
'post_name' => $post->post_name,
'to_ping' => $post->to_ping,
'pinged' => $post->pinged,
'post_modified' => $post->post_modified,
'post_modified_gmt' => $post->post_modified_gmt,
'post_content_filtered' => $post->post_content_filtered,
'post_parent' => $post->post_parent,
'guid' => $post->guid,
'menu_order' => $post->menu_order,
'post_type' => $post->post_type,
'post_mime_type' => $post->post_mime_type,
'comment_count' => $post->comment_count,
]
);
// Insert post meta data
$inserted_post_id = $wpdb->insert_id;
$postmetas_for_current_post = array_filter(
$backed_up_postmeta,
function( $postmeta ) use ( $post ) {
return $postmeta->post_id === $post->ID;
}
);
if ( ! empty( $postmetas_for_current_post ) ) {
foreach ( $postmetas_for_current_post as $postmeta ) {
add_post_meta( $inserted_post_id, $postmeta->meta_key, maybe_unserialize( $postmeta->meta_value ) );
}
}
}//end foreach
// Restore backed-up options
foreach ( $backup['options'] as $option ) {
update_option( $option->option_name, maybe_unserialize( $option->option_value ) );
}
// Remove the succeeded migration log from db
$version = str_replace( AbstractMigration::BACKUP_PREFIX, '', $backup_name );
$version = str_replace( '_', '.', $version );
$successful_migrations = get_option( AbstractMigration::SUCCESSFUL_MIGRATIONS, null );
$removed_migrations = [];
if ( ! empty( $successful_migrations ) ) {
$filtered_successful_migrations = array_filter(
$successful_migrations,
function( $migration ) use ( $version, $backup ) {
$backup_date = new \DateTime( $backup['created_date'], wp_timezone() );
$migration_date = new \DateTime( $migration['created_date'], wp_timezone() );
$should_remove = $migration_date >= $backup_date;
return ! $should_remove;
}
);
update_option( AbstractMigration::SUCCESSFUL_MIGRATIONS, $filtered_successful_migrations );
$removed_migrations = array_udiff(
$successful_migrations,
$filtered_successful_migrations,
function( $a, $b ) {
return strcmp( serialize( $a ), serialize( $b ) );
}
);
}//end if
// Restore core version
update_option( 'yaymail_version', $version );
wp_cache_delete( 'yaymail_version', 'options' );
// Restore addon versions
$addon_versions = get_option( 'yaymail_addon_versions', [] );
$restored_addon_versions = array_filter(
$addon_versions,
function( $addon_version, $addon_namespace ) use ( $removed_migrations ) {
foreach ( $removed_migrations as $migration ) {
if ( ! empty( $migration['addon_namespace'] ) && $migration['addon_namespace'] === $addon_namespace && version_compare( $addon_version, $migration['to_version'], '<=' ) ) {
return false;
}
}
return true;
},
ARRAY_FILTER_USE_BOTH
);
update_option( 'yaymail_addon_versions', $restored_addon_versions );
do_action( 'yaymail_before_reset_migration_commit', $backup_name, $removed_migrations );
$wpdb->query( 'COMMIT' );
$this->logger->log( '***** Finish reset transaction ****' );
$this->logger->log( "$backup_name restored successfully!" );
return [ 'is_critical_migration_required' => $this->check_if_critical_migration_required() ];
} catch ( \Exception $e ) {
$wpdb->query( 'ROLLBACK' );
$this->logger->log( '***** Transaction rolled back. ' . $e->getMessage() );
throw new \Exception( esc_html__( 'Restoration failed', 'yaymail' ), 500 );
}//end try
}
public function check_if_critical_migration_required() {
$old_version = get_option( 'yaymail_version' );
if ( $old_version ) {
return version_compare( $old_version, '4.0.0', '<' );
}
return false;
}
private function get_required_migration_names() {
$old_version = MigrationHelper::format_version_number( get_option( 'yaymail_version' ) );
$new_version = MigrationHelper::format_version_number( YAYMAIL_VERSION );
$successful_migrations = get_option( AbstractMigration::SUCCESSFUL_MIGRATIONS, [] );
// If freshly installed or already on latest version with no migrations needed
if ( ( version_compare( $old_version, $new_version, '>=' ) && empty( $successful_migrations ) ) ) {
return apply_filters( 'yaymail_required_migration_names', [] );
}
$args = [
'post_type' => 'yaymail_template',
'post_status' => 'any',
'posts_per_page' => -1,
];
$query = new \WP_Query( $args );
$has_yaymail_template = $query->have_posts();
if ( ( $old_version == null && ! $has_yaymail_template ) && empty( $successful_migrations ) ) {
return [];
}
// Check if any migrations have already been run up to current version
foreach ( $successful_migrations as $migration ) {
if ( empty( $migration['addon_namespace'] ) && version_compare( $migration['to_version'], YAYMAIL_VERSION, '>=' ) ) {
return apply_filters( 'yaymail_required_migration_names', [] );
}
}
// Get available migrations that need to be run
$core_migrations = MainMigration::CORE_MIGRATIONS;
$filtered_migrations = MigrationHelper::filter_migrations( $core_migrations, $old_version, $new_version );
$needed_migrations = empty( $filtered_migrations ) ? [] : [ 'YayMail' ];
return apply_filters( 'yaymail_required_migration_names', $needed_migrations );
}
private function get_backups() {
global $wpdb;
$backup_prefix = AbstractMigration::BACKUP_PREFIX;
$backup_options_query = $wpdb->prepare(
"SELECT option_name, option_value FROM {$wpdb->options} WHERE option_name LIKE %s",
$backup_prefix . '%'
);
$backups_result = $wpdb->get_results( $backup_options_query );// phpcs:ignore
$backups = [];
foreach ( $backups_result as $backup ) {
$data = maybe_unserialize( $backup->option_value );
$backups[] = [
'created_date' => $data['created_date'] ?? 'created_date not found',
'name' => $backup->option_name ?? 'backup name not found',
];
}
return $backups;
}
}
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