<?php
/**
 * Deleting the plugin.
 *
 * Its schedules always go — there is nothing left to run them.
 *
 * Everything else is kept unless the site owner ticked "Delete everything
 * when the plugin is deleted" (SeqWins Display → Tracking & privacy): then
 * this site is disconnected from angelsponsoring.com and everything the
 * plugin put here is removed — the copies, their screenshots, viewers'
 * records, opt-ins and totals, and its settings. Nothing is left behind.
 *
 * Kept by default so that deleting and reinstalling the plugin, a common
 * fix, never loses a site's opt-ins, stats or connection.
 *
 * @package SeqWins_Display
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

if ( ! defined( 'SEQWINS_DISPLAY_SOURCE' ) ) {
	define( 'SEQWINS_DISPLAY_SOURCE', 'https://angelsponsoring.com' );
}

if ( ! defined( 'SEQWINS_DISPLAY_VERSION' ) ) {
	define( 'SEQWINS_DISPLAY_VERSION', '1.0.0' );
}

require_once __DIR__ . '/includes/class-seqwins-display-crypto.php';
require_once __DIR__ . '/includes/class-seqwins-display-api.php';

/**
 * Everything for one site.
 */
function seqwins_display_uninstall_site() {
	foreach ( array( 'simplet_display_check', 'simplet_display_retry', 'simplet_display_assets', 'simplet_display_check_account', 'simplet_display_daily', 'simplet_display_summary' ) as $hook ) {
		wp_clear_scheduled_hook( $hook );
	}

	wp_unschedule_hook( 'simplet_display_check_copy' );

	$settings = get_option( 'simplet_display_privacy', array() );

	if ( ! is_array( $settings ) || empty( $settings['uninstall'] ) ) {
		return;
	}

	// Tell angelsponsoring.com this site has gone, so the account's list of
	// connected websites is right. Best effort, and quick.
	$saved = get_option( 'simplet_display_connection', array() );

	if ( is_array( $saved ) && ! empty( $saved['key'] ) ) {
		$token = SeqWins_Display_Crypto::open( (string) $saved['key'] );

		if ( is_string( $token ) && '' !== $token ) {
			SeqWins_Display_API::post( 'connect/disconnect', array(), $token, 5 );
		}
	}

	// The copies.
	$ids = get_posts(
		array(
			'post_type'   => 'simplet_display',
			'post_status' => array( 'publish', 'draft', 'pending', 'private', 'future', 'trash' ),
			'fields'      => 'ids',
			'numberposts' => -1,
		)
	);

	foreach ( $ids as $id ) {
		wp_delete_post( (int) $id, true );
	}

	// Their screenshots: only this plugin's own folder in uploads.
	$uploads = wp_get_upload_dir();
	$folder  = trailingslashit( $uploads['basedir'] ) . 'simplet-display';

	if ( is_dir( $folder ) ) {
		$items = new RecursiveIteratorIterator(
			new RecursiveDirectoryIterator( $folder, FilesystemIterator::SKIP_DOTS ),
			RecursiveIteratorIterator::CHILD_FIRST
		);

		foreach ( $items as $item ) {
			if ( $item->isDir() && ! $item->isLink() ) {
				@rmdir( $item->getPathname() ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged, WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- this plugin's own folder.
			} else {
				wp_delete_file( $item->getPathname() );
			}
		}

		@rmdir( $folder ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged, WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- this plugin's own folder.
	}

	foreach ( array( 'simplet_display_connection', 'simplet_display_status', 'simplet_display_state', 'simplet_display_index', 'simplet_display_slugs', 'simplet_display_cache_gen', 'simplet_display_last_note', 'simplet_display_version', 'widget_simplet_display', 'simplet_display_db', 'simplet_display_privacy', 'simplet_display_stats_sent', 'simplet_display_summary_sent', 'simplet_display_notes_refused', 'simplet_display_welcome', 'simplet_display_last_error', 'simplet_display_plain_headers', 'simplet_display_last_http', 'simplet_display_api_ns', 'simplet_display_site_fatal', 'simplet_display_speed_on', 'simplet_display_speed_log', 'seqwins_display_rebranded' ) as $option ) {
		delete_option( $option );
	}

	// Viewers' records and the daily totals: this plugin's own tables.
	global $wpdb;

	foreach ( array( 'progress', 'viewers', 'counts', 'leads' ) as $table ) {
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.DirectDatabaseQuery.SchemaChange -- the plugin's own tables, on uninstall.
		$wpdb->query( $wpdb->prepare( 'DROP TABLE IF EXISTS %i', $wpdb->prefix . 'simplet_display_' . $table ) );
	}

	// Which pages showed which SeqWins; when each admin last went to make one.
	delete_post_meta_by_key( '_simplet_display_uses' );
	delete_metadata( 'user', 0, 'simplet_display_creating', '', true );
	delete_metadata( 'user', 0, 'simplet_display_dismissed', '', true );

	// The fast copies and short-lived markers, wherever they were kept.

	// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- one-off clean-up of this plugin's own transients.
	$wpdb->query(
		$wpdb->prepare(
			"DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
			$wpdb->esc_like( '_transient_simplet_display_' ) . '%',
			$wpdb->esc_like( '_transient_timeout_simplet_display_' ) . '%'
		)
	);

	if ( function_exists( 'wp_cache_supports' ) && wp_cache_supports( 'flush_group' ) ) {
		wp_cache_flush_group( 'simplet_display' );
	}
}

if ( is_multisite() ) {
	foreach ( get_sites( array( 'fields' => 'ids' ) ) as $simplet_display_site ) {
		switch_to_blog( (int) $simplet_display_site );
		seqwins_display_uninstall_site();
		restore_current_blog();
	}
} else {
	seqwins_display_uninstall_site();
}