<?php
/**
 * Uninstall handler.
 *
 * Runs only when the user explicitly deletes the plugin from the
 * Plugins screen. Removes all plugin-owned data: option rows,
 * posts of the CPT, taxonomy terms, and meta entries.
 *
 * Conservative deletion: only targets keys with the plugin's
 * documented prefixes to avoid touching unrelated data.
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

global $wpdb;

/* Remove plugin settings. */
delete_option( 'aumnexcart_settings' );
delete_option( 'aumnexcart_db_version' );

/* Remove all products of this CPT (force delete bypasses trash). */
$aumnexcart_product_ids = get_posts(
	array(
		'post_type'      => 'aumnexcart_product',
		'post_status'    => 'any',
		'numberposts'    => -1,
		'fields'         => 'ids',
		'no_found_rows'  => true,
	)
);

if ( ! empty( $aumnexcart_product_ids ) ) {
	foreach ( $aumnexcart_product_ids as $aumnexcart_product_id ) {
		wp_delete_post( $aumnexcart_product_id, true );
	}
}

/*
 * Remove taxonomy terms.
 *
 * `uninstall.php` runs in a request where the plugin never booted, so neither the post type nor the
 * taxonomy is registered. `wp_delete_post()` does not care, but `get_terms()` refuses an unregistered
 * taxonomy and returns `WP_Error: Invalid taxonomy` — which the guard below used to swallow, leaving
 * every category behind for good while this file's header claimed otherwise. Register the taxonomy
 * for the length of this request so both the lookup and `wp_delete_term()` (which also clears
 * relationships, term meta and the children cache) behave normally.
 */
if ( ! taxonomy_exists( 'aumnexcart_category' ) ) {
	register_taxonomy( 'aumnexcart_category', 'aumnexcart_product', array( 'hierarchical' => true ) );
}

$aumnexcart_terms = get_terms(
	array(
		'taxonomy'   => 'aumnexcart_category',
		'hide_empty' => false,
		'fields'     => 'ids',
	)
);

if ( ! is_wp_error( $aumnexcart_terms ) && ! empty( $aumnexcart_terms ) ) {
	foreach ( $aumnexcart_terms as $aumnexcart_term_id ) {
		wp_delete_term( $aumnexcart_term_id, 'aumnexcart_category' );
	}
}

/* Sweep orphan postmeta with the plugin prefix (safety net). */
$wpdb->query(
	$wpdb->prepare(
		"DELETE FROM {$wpdb->postmeta} WHERE meta_key LIKE %s",
		$wpdb->esc_like( '_aumnexcart_' ) . '%'
	)
);

/* Core's own hierarchy cache for the taxonomy — written by core, prefixed with our name. */
delete_option( 'aumnexcart_category_children' );

/* Clear any plugin transients. */
$wpdb->query(
	$wpdb->prepare(
		"DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
		$wpdb->esc_like( '_transient_aumnexcart_' ) . '%',
		$wpdb->esc_like( '_transient_timeout_aumnexcart_' ) . '%'
	)
);