<?php
/**
 * Runs when the plugin is deleted from the Plugins screen. Forms, entries,
 * files and settings are kept unless the site turned on "Delete all data
 * when uninstalling" in Flexsolutions Form Builder → Settings (off by default), so
 * deleting the plugin to reinstall or update it by hand loses nothing.
 *
 * @package TFlexForms
 */

declare( strict_types = 1 );

// Only run when WordPress itself is uninstalling the plugin.
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

/**
 * Whether the current site chose to delete its data on uninstall. Read
 * directly: the plugin's classes are not loaded during uninstall.
 */
function tflexforms_uninstall_deletes_data(): bool {
	$settings = get_option( 'tflexforms_settings', array() );
	return is_array( $settings ) && ! empty( $settings['delete_data_on_uninstall'] );
}

/**
 * Deletes forms, options and capabilities for the current site, or only
 * stops its scheduled tasks when the site keeps its data.
 */
function tflexforms_uninstall_site(): void {
	wp_clear_scheduled_hook( 'tflexforms_maintenance' );
	wp_clear_scheduled_hook( 'tflexforms_run_jobs' );
	if ( ! tflexforms_uninstall_deletes_data() ) {
		return;
	}

	// Delete forms in batches through the API so meta, revisions and caches are cleaned up.
	do {
		$ids = get_posts(
			array(
				'post_type'   => 'tflexforms_form',
				'post_status' => 'any',
				'numberposts' => 100,
				'fields'      => 'ids',
			)
		);
		foreach ( $ids as $id ) {
			if ( ! wp_delete_post( (int) $id, true ) ) {
				break 2; // Stop rather than loop forever if a delete fails.
			}
		}
	} while ( array() !== $ids );

	delete_option( 'tflexforms_version' );
	delete_option( 'tflexforms_settings' );
	delete_option( 'tflexforms_captcha_warning' );
	delete_option( 'tflexforms_db_version' );
	delete_option( 'tflexforms_schema_migration' );
	delete_option( 'tflexforms_upload_key' );
	delete_option( 'tflexforms_uploads_encrypted' );
	delete_metadata( 'user', 0, 'tflexforms_entries_per_page', '', true );
	delete_metadata( 'user', 0, 'tflexforms_onboarding_dismissed', '', true );
	delete_metadata( 'user', 0, 'tflexforms_review_answer', '', true );
	delete_option( 'tflexforms_review_ready' );

	// Stored entries (custom tables).
	global $wpdb;
	foreach ( array( 'tflexforms_entry_tags', 'tflexforms_entry_notes', 'tflexforms_jobs', 'tflexforms_submission_keys', 'tflexforms_entry_files', 'tflexforms_entry_values', 'tflexforms_entries' ) as $table ) {
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.DirectDatabaseQuery.SchemaChange -- Removing our own tables.
		$wpdb->query( $wpdb->prepare( 'DROP TABLE IF EXISTS %i', $wpdb->prefix . $table ) );
	}

	// Uploaded files.
	$dir = defined( 'TFLEXFORMS_UPLOAD_DIR' ) && '' !== (string) TFLEXFORMS_UPLOAD_DIR
		? untrailingslashit( (string) TFLEXFORMS_UPLOAD_DIR )
		: untrailingslashit( (string) wp_upload_dir( null, false )['basedir'] ) . '/tflexforms-uploads';
	if ( is_dir( $dir ) && ! is_link( $dir ) ) {
		$items = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $dir, FilesystemIterator::SKIP_DOTS ), RecursiveIteratorIterator::CHILD_FIRST );
		foreach ( $items as $item ) {
			if ( $item->isDir() && ! $item->isLink() ) {
				rmdir( $item->getPathname() ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir
			} else {
				wp_delete_file( $item->getPathname() );
			}
		}
		rmdir( $dir ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir
	}

	$caps = array(
		'edit_tflexforms_forms',
		'edit_others_tflexforms_forms',
		'edit_published_tflexforms_forms',
		'edit_private_tflexforms_forms',
		'publish_tflexforms_forms',
		'read_private_tflexforms_forms',
		'delete_tflexforms_forms',
		'delete_others_tflexforms_forms',
		'delete_published_tflexforms_forms',
		'delete_private_tflexforms_forms',
		'read_tflexforms_entries',
		'edit_tflexforms_entries',
		'delete_tflexforms_entries',
	);
	foreach ( wp_roles()->role_objects as $role ) {
		foreach ( $caps as $cap ) {
			$role->remove_cap( $cap );
		}
	}
}

if ( is_multisite() ) {
	foreach ( get_sites(
		array(
			'fields' => 'ids',
			'number' => 0,
		)
	) as $tflexforms_site_id ) {
		switch_to_blog( (int) $tflexforms_site_id );
		tflexforms_uninstall_site();
		restore_current_blog();
	}
} else {
	tflexforms_uninstall_site();
}

// Rate-limit transients expire on their own (10 minutes) and need no cleanup.