<?php
/**
 * Runs only when the plugin is deleted from the Plugins screen.
 * Removes tab data only if "Remove all tabs and settings" was checked.
 * Pages and posts themselves are never touched.
 *
 * @package Tabwise
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

tabwise_uninstall();

/**
 * Delete all Tabwise tabs and options.
 */
function tabwise_uninstall() {
	$settings = get_option( 'tabwise_settings', array() );
	if ( empty( $settings['cleanup'] ) ) {
		return;
	}

	foreach ( array( 'page', 'post' ) as $post_type ) {
		$taxonomy = 'tabwise_' . $post_type;

		// The plugin isn't loaded during uninstall, so register the taxonomy briefly.
		if ( ! taxonomy_exists( $taxonomy ) ) {
			register_taxonomy( $taxonomy, $post_type, array( 'public' => false ) );
		}

		$term_ids = get_terms(
			array(
				'taxonomy'   => $taxonomy,
				'hide_empty' => false,
				'fields'     => 'ids',
			)
		);
		if ( is_wp_error( $term_ids ) ) {
			continue;
		}

		// Removes each tab, its color/icon meta and its page assignments.
		foreach ( $term_ids as $term_id ) {
			wp_delete_term( $term_id, $taxonomy );
		}
	}

	foreach ( array( 'settings', 'default', 'order', 'colors', 'icons', 'layouts', 'db' ) as $option ) {
		delete_option( 'tabwise_' . $option );
	}
}