<?php
/**
 * Runs when the plugin is deleted from the Plugins screen.
 */

if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

// Forms and entries are the user's data: keep them unless they opt out.
if ( 'yes' === get_option( 'mammoth_delete_data_on_uninstall' ) ) {
	global $wpdb;
	$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->prefix}mammoth_entries" ); // phpcs:ignore WordPress.DB
	$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->prefix}mammoth_forms" ); // phpcs:ignore WordPress.DB
}

delete_option( 'mammoth_db_version' );
delete_option( 'mammoth_delete_data_on_uninstall' );
delete_option( 'mammoth_retention_days' );
delete_option( 'mammoth_store_ip' );
delete_option( 'mammoth_number_format' );
delete_option( 'mammoth_formula_problems' );
wp_clear_scheduled_hook( 'mammoth_daily_cleanup' );
delete_option( 'mammoth_smtp' );
delete_option( 'mammoth_spam' );

// Imports that were never finished: their files hold entry data.
$mammoth_upload = wp_upload_dir( null, false );
$mammoth_dir    = trailingslashit( $mammoth_upload['basedir'] ) . 'mammoth-imports';
if ( is_dir( $mammoth_dir ) ) {
	$mammoth_files   = (array) glob( $mammoth_dir . '/*' );
	$mammoth_files[] = $mammoth_dir . '/.htaccess';
	foreach ( $mammoth_files as $mammoth_file ) {
		if ( $mammoth_file && is_file( $mammoth_file ) ) {
			wp_delete_file( $mammoth_file );
		}
	}
	rmdir( $mammoth_dir ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- our own, now empty, folder.
}

// Emails waiting to be sent in the background, and their attachments.
wp_unschedule_hook( 'mammoth_send_queued_mail' );
wp_unschedule_hook( 'mammoth_mail_queue_sweep' );
delete_option( 'mammoth_mail_queue_failed' );
$mammoth_mail_dir = trailingslashit( $mammoth_upload['basedir'] ) . 'mammoth-mail';
if ( is_dir( $mammoth_mail_dir ) ) {
	foreach ( (array) glob( $mammoth_mail_dir . '/*/*' ) as $mammoth_file ) {
		if ( $mammoth_file && is_file( $mammoth_file ) ) {
			wp_delete_file( $mammoth_file );
		}
	}
	foreach ( (array) glob( $mammoth_mail_dir . '/*', GLOB_ONLYDIR ) as $mammoth_sub ) {
		rmdir( $mammoth_sub ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- our own, now empty, folders.
	}
	wp_delete_file( $mammoth_mail_dir . '/.htaccess' );
	wp_delete_file( $mammoth_mail_dir . '/index.php' );
	rmdir( $mammoth_mail_dir ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- our own, now empty, folder.
}

// Short-lived import and rate-limit data, and emails still waiting.
global $wpdb;
$wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- removing our own transients on uninstall.
	$wpdb->prepare(
		"DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s",
		$wpdb->esc_like( 'mammoth_mailq_' ) . '%',
		$wpdb->esc_like( '_transient_mammoth_import_' ) . '%',
		$wpdb->esc_like( '_transient_timeout_mammoth_import_' ) . '%',
		$wpdb->esc_like( '_transient_mammoth_rate_' ) . '%',
		$wpdb->esc_like( '_transient_timeout_mammoth_rate_' ) . '%',
		// Saved "continue later" answers and the limits on saving and emailing them.
		$wpdb->esc_like( '_transient_mammoth_draft' ) . '%',
		$wpdb->esc_like( '_transient_timeout_mammoth_draft' ) . '%',
		$wpdb->esc_like( '_transient_mammoth_vmail_' ) . '%',
		$wpdb->esc_like( '_transient_timeout_mammoth_vmail_' ) . '%',
		// Results of forms sent without JavaScript (they hold typed answers), and SMTP test notes.
		$wpdb->esc_like( '_transient_mammoth_r_' ) . '%',
		$wpdb->esc_like( '_transient_timeout_mammoth_r_' ) . '%',
		$wpdb->esc_like( '_transient_mammoth_smtp_test_' ) . '%',
		$wpdb->esc_like( '_transient_timeout_mammoth_smtp_test_' ) . '%'
	)
);