<?php
namespace artbees\QuickView\Lifecycle;

use artbees\QuickView\Domain\Settings\SettingsSchema;
use artbees\QuickView\Storage\SettingsRepository;

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

/** Install, upgrade, and removal operations for Free-owned data only. */
final class Lifecycle {
	const NETWORK_CURSOR_OPTION = 'artbees_qv_network_setup_cursor';
	const NETWORK_SETUP_HOOK   = 'artbees_qv/network_setup';
	const SITE_BATCH_SIZE      = 100;

	public static function activate( $network_wide = false ) {
		if ( is_multisite() && $network_wide ) {
			self::process_network_setup();
			return;
		}

		( new MigrationRunner() )->run( false );
	}

	public static function install_site_defaults() {
		$repository = new SettingsRepository( new SettingsSchema() );
		if ( false === get_option( SettingsRepository::OPTION, false ) ) {
			$repository->replace( $repository->defaults() );
		}
		if ( false === get_option( 'artbees_qv_onboarding', false ) ) {
			update_option( 'artbees_qv_onboarding', 'new', true );
		}
	}

	/** Continues network activation in bounded, resumable batches. */
	public static function process_network_setup() {
		$offset   = (int) get_site_option( self::NETWORK_CURSOR_OPTION, 0 );
		$site_ids = get_sites(
			array(
				'fields' => 'ids',
				'number' => self::SITE_BATCH_SIZE,
				'offset' => $offset,
			)
		);

		foreach ( $site_ids as $site_id ) {
			switch_to_blog( (int) $site_id );
			( new MigrationRunner() )->run( true );
			restore_current_blog();
		}

		if ( count( $site_ids ) === self::SITE_BATCH_SIZE ) {
			update_site_option( self::NETWORK_CURSOR_OPTION, $offset + count( $site_ids ) );
			if ( ! wp_next_scheduled( self::NETWORK_SETUP_HOOK ) ) {
				wp_schedule_single_event( time() + 1, self::NETWORK_SETUP_HOOK );
			}
			return;
		}

		delete_site_option( self::NETWORK_CURSOR_OPTION );
	}

	public static function deactivate() {
		wp_clear_scheduled_hook( 'artbees_qv/maintenance' );
		wp_clear_scheduled_hook( self::NETWORK_SETUP_HOOK );
		delete_option( MigrationRunner::LOCK );
		delete_site_option( self::NETWORK_CURSOR_OPTION );
	}

	public static function new_site( $site ) {
		if ( ! is_object( $site ) || empty( $site->blog_id ) ) { return; }
		switch_to_blog( (int) $site->blog_id );
		( new MigrationRunner() )->run( false );
		restore_current_blog();
	}

	public static function uninstall( $network_wide = false ) {
		if ( is_multisite() && $network_wide && is_super_admin() ) {
			self::for_sites(
				static function () {
					if ( self::remove_data_enabled() ) { self::delete_site_data(); }
				}
			);
		} elseif ( self::remove_data_enabled() ) {
			self::delete_site_data();
		}

		do_action( 'artbees_qv/lifecycle/uninstall', (bool) $network_wide );
	}

	/** Deletes in 100-site queries while preserving each site's own remove-data choice. */
	public static function for_sites( callable $callback ) {
		$offset = 0;
		do {
			$site_ids = get_sites( array( 'fields' => 'ids', 'number' => self::SITE_BATCH_SIZE, 'offset' => $offset ) );
			foreach ( $site_ids as $site_id ) {
				switch_to_blog( (int) $site_id );
				$callback();
				restore_current_blog();
			}
			$offset += count( $site_ids );
		} while ( count( $site_ids ) === self::SITE_BATCH_SIZE );
	}

	private static function remove_data_enabled() {
		$settings = get_option( SettingsRepository::OPTION, array() );
		return is_array( $settings ) && ! empty( $settings['lifecycle']['remove_data'] );
	}

	private static function delete_site_data() {
		global $wpdb;

		delete_option( SettingsRepository::OPTION );
		delete_option( SettingsRepository::VERSION_OPTION );
		delete_option( MigrationRunner::VERSION_OPTION );
		delete_option( MigrationRunner::LOCK );
		delete_option( 'artbees_qv_onboarding' );
		wp_clear_scheduled_hook( 'artbees_qv/maintenance' );
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Plugin-owned metadata is removed only after the merchant explicitly chooses removal.
		$wpdb->delete( $wpdb->postmeta, array( 'meta_key' => '_artbees_qv_visibility' ) );
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Plugin-owned metadata is removed only after the merchant explicitly chooses removal.
		$wpdb->delete( $wpdb->termmeta, array( 'meta_key' => '_artbees_qv_visibility' ) );
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Plugin-owned metadata is removed only after the merchant explicitly chooses removal.
		$wpdb->delete( $wpdb->termmeta, array( 'meta_key' => '_artbees_qv_include_descendants' ) );
	}
}