<?php
/**
 * AJ Agent Crawl Optimizer uninstall handler.
 *
 * Runs only when the plugin is uninstalled (deleted from the Plugins screen),
 * not on deactivation. Removes every option the plugin created so the database
 * is left clean.
 *
 * @package Ajaco
 */

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

/**
 * Delete the plugin's options, transients, and post meta for the current site.
 *
 * Wrapped in a function so none of these working variables leak into the global
 * scope. Called once per site (looped across the network on multisite).
 *
 * @param string[] $options        Option names to delete.
 * @param string[] $transients     Transient names to delete.
 * @param string[] $post_meta_keys Post-meta keys to delete across all posts.
 * @return void
 */
function ajaco_uninstall_clear_site( array $options, array $transients, array $post_meta_keys ) {
	foreach ( $options as $option ) {
		delete_option( $option );
	}
	foreach ( $transients as $transient ) {
		delete_transient( $transient );
	}
	foreach ( $post_meta_keys as $post_meta_key ) {
		delete_post_meta_by_key( $post_meta_key );
	}
}

/**
 * Remove every trace of the plugin from the database.
 *
 * @return void
 */
function ajaco_uninstall_cleanup() {
	$options = array(
		'ajaco_markdown_enabled',
		'ajaco_content_signals_enabled',
		'ajaco_api_catalog_enabled',
		'ajaco_mcp_server_card_enabled',
		'ajaco_agent_skills_index_enabled',
		'ajaco_webmcp_enabled',
		'ajaco_json_ld_enabled',
		'ajaco_openapi_enabled',
		'ajaco_indexnow_enabled',
		'ajaco_llms_txt_enabled',
		'ajaco_ai_bot_rules_enabled',
		'ajaco_auth_md_enabled',
		'ajaco_ai_bot_policy',
		'ajaco_content_signal_prefs',
		'ajaco_indexnow_key',
		// Wizard state (persistent options since 1.0.1).
		'ajaco_show_wizard',
		'ajaco_wizard_done',
		// v2: the stored self-scan result.
		'ajaco_last_scan',
		// v2: the llms.txt curation config (sections, intro, custom markdown).
		'ajaco_llms_config',
	);

	// v2: per-post llms.txt curation meta. Uninstall (unlike Reset) removes
	// every trace of the plugin, including the meta rows it wrote on posts.
	$post_meta_keys = array(
		'_ajaco_llms_exclude',
		'_ajaco_llms_summary',
	);

	$transients = array(
		'ajaco_reset_notice',
		'ajaco_openapi_cache',
		'ajaco_llms_txt_cache',
		'ajaco_llms_full_txt_cache',
		// Pre-1.0.1 installs stored wizard state in transients.
		'ajaco_show_wizard',
		'ajaco_wizard_applied',
	);

	if ( is_multisite() ) {
		$sites = get_sites( array( 'fields' => 'ids' ) );
		foreach ( $sites as $site_id ) {
			switch_to_blog( $site_id );
			ajaco_uninstall_clear_site( $options, $transients, $post_meta_keys );
			restore_current_blog();
		}
	} else {
		ajaco_uninstall_clear_site( $options, $transients, $post_meta_keys );
	}
}

ajaco_uninstall_cleanup();