<?php
/**
 * Uninstall script for Acumenpopup
 *
 * This file is executed when the plugin is uninstalled.
 * It cleans up all plugin data including options, post meta, and generated files.
 *
 * @since   1.0.0
 * @package Acumenpopup
 */

// Exit if uninstall not called from WordPress.
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

/**
 * Clean up generated CSS files.
 *
 * Removes all CSS files generated by the plugin in the uploads directory.
 *
 * @since 1.0.0
 *
 * @return void
 */
function acumenpopup_cleanup_generated_files() {
	$upload_dir = wp_upload_dir();
	$css_dir    = trailingslashit( $upload_dir['basedir'] ) . 'acumenpopup/css';

	if ( ! file_exists( $css_dir ) ) {
		return;
	}

	global $wp_filesystem;

	if ( empty( $wp_filesystem ) ) {
		require_once ABSPATH . '/wp-admin/includes/file.php';
		WP_Filesystem();
	}

	if ( ! $wp_filesystem ) {
		return;
	}

	// Delete all files in CSS directory.
	$files = glob( $css_dir . '/*' );

	if ( is_array( $files ) ) {
		foreach ( $files as $file ) {
			if ( is_file( $file ) ) {
				$wp_filesystem->delete( $file );
			}
		}
	}

	// Remove the CSS directory.
	$wp_filesystem->rmdir( $css_dir );

	// Remove parent directory if empty.
	$parent_dir = dirname( $css_dir );

	if ( file_exists( $parent_dir ) ) {
		$remaining_files = glob( $parent_dir . '/*' );

		if ( empty( $remaining_files ) ) {
			$wp_filesystem->rmdir( $parent_dir );
		}
	}
}

/**
 * Clean up plugin options.
 *
 * Removes all options stored by the plugin.
 *
 * @since 1.0.0
 *
 * @return void
 */
function acumenpopup_cleanup_options() {
	delete_option( 'acumenpopup_do_activation_redirect' );
	delete_option( 'acumenpopup_settings' );
	delete_option( 'acumenpopup_settings_v2' );
	delete_option( 'acumenpopup_ab_tests' );
}

/**
 * Clean up campaign posts and meta.
 *
 * Removes all campaign posts and their associated meta data.
 * This is optional and disabled by default to prevent accidental data loss.
 *
 * @since 1.0.0
 *
 * @return void
 */
function acumenpopup_cleanup_campaigns() {
	$settings         = get_option( 'acumenpopup_settings', array() );
	$delete_campaigns = ! empty( $settings['delete_on_uninstall'] );

	if ( ! $delete_campaigns ) {
		return;
	}

	$campaigns = get_posts(
		array(
			'post_type'      => 'acumen_popup_cmpgn',
			'posts_per_page' => -1,
			'post_status'    => 'any',
			'fields'         => 'ids',
		)
	);

	foreach ( $campaigns as $post_id ) {
		wp_delete_post( $post_id, true );
	}
}

// Run cleanup functions — campaigns must be checked before options are deleted.
acumenpopup_cleanup_generated_files();
acumenpopup_cleanup_campaigns();
acumenpopup_cleanup_options();