<?php
/**
 * Shared lightweight settings defaults.
 *
 * Kept separate from the admin UI so front-end tracking requests do not need to
 * load large provider/client classes just to read default option values.
 */

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

class AI_O_Optimiser_Settings {

	/**
	 * Default plugin settings, used on first activation and when merging upgrades.
	 *
	 * Provider-specific default arrays are mirrored here deliberately so ordinary
	 * public requests can resolve settings without parsing GA4, Connector Hub or
	 * the full guidance implementation. Regression coverage keeps the mirrors in
	 * sync with those provider classes.
	 *
	 * @return array
	 */
	public static function defaults() {
		$tracked = array();
		foreach ( array_keys( AI_O_Optimiser_Bots::defaults() ) as $slug ) {
			$tracked[ $slug ] = true;
		}

		return array_merge(
			array(
				'enabled'                   => true,
				'enable_referrals'          => true,
				'tracked_bots'              => $tracked,
				'custom_bots'               => array(),
				'retention_days'            => 90, // Legacy key retained for compatibility.
				'raw_retention_days'        => 14,
				'aggregate_retention_days'  => 730,
				'strip_query_strings'       => true,
				'referrer_storage'          => 'domain',
				'delete_data_on_uninstall'  => false,
				'near_miss_capture_enabled' => false,
				// Reverse proxies whose forwarded client address may be believed.
				// Empty means REMOTE_ADDR only. Cloudflare is recognised from its
				// published ranges without being listed here.
				'trusted_proxies'           => '',
				// Off by default: verification fetches vendor address lists and
				// makes reverse-DNS queries, neither of which a site should do
				// without being asked.
				'verify_bot_identity'       => false,
				'share_site_report'         => false,
			),
			self::llms_defaults(),
			self::ga4_defaults(),
			self::connector_defaults(),
			self::health_defaults()
		);
	}

	/**
	 * Lightweight mirror of AI_O_Optimiser_LLMS::default_settings().
	 *
	 * @return array
	 */
	public static function llms_defaults() {
		return array(
			'llms_track_hits'                    => true,
			'llms_provider_mode'                 => 'auto',
			'llms_generate_enabled'              => true,
			'llms_generate_full'                 => true,
			'llms_generator_site_summary'        => '',
			'llms_generator_post_types'          => array( 'page', 'post' ),
			'llms_generator_max_items'           => 60,
			'llms_generator_respect_noindex'     => true,
			'llms_generator_include_categories'  => true,
			'llms_audit_check_full'              => true,
			'llms_audit_check_links'             => true,
			'llms_audit_max_links'               => 20,
			'llms_audit_min_links'               => 3,
			'llms_audit_max_bytes'               => 100000,
			'llms_rank_math_header_fix'          => true,
			'llms_header_fix_allow_index'        => false,
			'robots_txt_header_fix'              => true,
		);
	}

	/**
	 * Lightweight mirror of AI_O_Optimiser_GA4::default_settings().
	 *
	 * @return array
	 */
	public static function ga4_defaults() {
		return array(
			'ga4_enabled'          => false,
			'ga4_measurement_id'   => '',
			'ga4_api_secret'       => '',
			'ga4_region'           => 'global',
			'ga4_export_crawlers'  => true,
			'ga4_export_referrals' => true,
			'ga4_export_guidance'  => true,
		);
	}

	/**
	 * Lightweight mirror of AI_O_Optimiser_Connector_Client::default_settings().
	 *
	 * @return array
	 */
	public static function connector_defaults() {
		return array(
			'connector_hub_url'  => 'https://hub.ai-o.com.au',
			'connector_id'       => '',
			'connector_secret'   => '',
			'gsc_connected'      => false,
			'gsc_property'       => '',
			'gsc_last_sync'      => '',
			'gsc_last_error'     => '',
			'gsc_current_start'  => '',
			'gsc_current_end'    => '',
			'gsc_previous_start' => '',
			'gsc_previous_end'   => '',
			'gsc_current_rows'   => 0,
			'gsc_previous_rows'  => 0,
			'ga4_property'       => '',
			'ga4_last_sync'      => '',
			'ga4_last_error'     => '',
		);
	}

	/**
	 * Default settings for the optional nightly health monitor.
	 *
	 * Duplicated here deliberately to keep front-end requests independent from the
	 * heavier system-check class.
	 *
	 * @return array
	 */
	public static function health_defaults() {
		return array(
			'health_check_enabled'   => false,
			'health_check_email'     => get_option( 'admin_email' ),
			'health_check_hour'      => 20,
			'health_check_frequency' => 'daily',
		);
	}
}