Pink-Crab/Perique_Migrations

<?php

declare(strict_types=1);

/**
 * Deactivation event to be launched on Uninstall.
 *
 * @package PinkCrab\Perique\Migration\Plugin_Lifecycle
 * @author Glynn Quelch glynn@pinkcrab.co.uk
 * @since 0.0.1
 */

namespace PinkCrab\Perique\Migration\Event;

use PinkCrab\Perique\Migration\Migration;
use PinkCrab\DB_Migration\Migration_Manager;
use PinkCrab\DB_Migration\Database_Migration;
use PinkCrab\Plugin_Lifecycle\State_Event\Uninstall as State_Events_Uninstall;

class Uninstall implements State_Events_Uninstall {

    /**
     * Array of tables to be dropped.
     *
     * @var Migration[]
     */
    protected array $tables = array();

    /**
     * The migration log key to clear after dropping tables.
     *
     * @var string
     */
    protected string $migration_log_key;

    public function __construct( Migration_Manager $migration_manager ) {
        $this->set_tables( $migration_manager->get_migrations() );
        $this->migration_log_key = $migration_manager->migration_log()->get_log_key();
    }


    /**
     * Set the table to remove
     *
     * @param Database_Migration[] $migrations
     * @return void
     */
    public function set_tables( array $migrations ): void {
        $this->tables = \array_filter(
            $migrations,
            fn( Database_Migration $migration ) => is_a( $migration, Migration::class ) && $migration->drop_on_uninstall()
        );
    }



    /**
     * Invokes the run method.
     *
     * @return void
     */
    public function __invoke(): void {
        $this->run();

    }

    /**
     * Runs the dropping of all valid tables.
     *
     * @return void
     */
    public function run(): void {
        // If no tables, return.
        if ( empty( $this->tables ) ) {
            return;
        }

        $this->remove_migration_log();
        $this->drop_tables();

    }

    /**
     * Drops all tables.
     *
     * @return void
     */
    protected function drop_tables() {
        /** @var \wpdb $wpdb */
        global $wpdb;

        // Temp disable warnings.
        $original_state = (bool) $wpdb->suppress_errors;
        $wpdb->suppress_errors( true );

        foreach ( $this->tables as $table ) {
            $table_name = $table->get_table_name();
            $wpdb->get_results( "DROP TABLE IF EXISTS {$table_name}" ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
        }

        // Reset warnings to initial state.
        $wpdb->suppress_errors( $original_state );
    }

    /**
     * Delete the migration log.
     *
     * @return void
     */
    protected function remove_migration_log(): void {
        \delete_option( $this->migration_log_key );
    }
}