<?php
namespace QWSpeedCache\Tools;

defined( 'ABSPATH' ) || exit;

/**
 * Support data export for troubleshooting (no secrets).
 */
class SupportExport {

	public function __construct() {
		add_action( 'admin_post_qwsc_support_export', array( $this, 'download' ) );
	}

	/**
	 * @return array
	 */
	public static function build() {
		global $wp_version;
		$s = \QWSpeedCache\Plugin::instance()->get_all_settings();
		foreach ( \QWSpeedCache\Settings\Schema::secret_keys() as $k ) {
			unset( $s[ $k ] );
		}
		$active = array();
		if ( function_exists( 'get_option' ) ) {
			$active = (array) get_option( 'active_plugins', array() );
		}
		return array(
			'plugin'           => 'qw-speed-cache',
			'version'          => defined( 'QWSC_VERSION' ) ? QWSC_VERSION : '',
			'wp'               => isset( $wp_version ) ? $wp_version : '',
			'php'              => PHP_VERSION,
			'home'             => home_url( '/' ),
			'multisite'        => is_multisite(),
			'wp_cache'         => defined( 'WP_CACHE' ) && WP_CACHE,
			'advanced_cache'   => defined( 'WP_CONTENT_DIR' ) && file_exists( WP_CONTENT_DIR . '/advanced-cache.php' ),
			'object_cache'     => defined( 'WP_CONTENT_DIR' ) && file_exists( WP_CONTENT_DIR . '/object-cache.php' ),
			'settings'         => $s,
			'active_plugins'   => $active,
			'theme'            => function_exists( 'get_stylesheet' ) ? get_stylesheet() : '',
			'conflicts'        => class_exists( '\QWSpeedCache\Safety\ConflictDetector' )
				? \QWSpeedCache\Safety\ConflictDetector::active_conflicts()
				: array(),
			'generated'        => gmdate( 'c' ),
		);
	}

	public function download() {
		check_admin_referer( 'qwsc_support_export' );
		if ( ! current_user_can( 'manage_options' ) ) {
			wp_die( esc_html__( 'Unauthorized', 'qw-optimize' ), '', array( 'response' => 403 ) );
		}
		$data = self::build();
		header( 'Content-Type: application/json; charset=utf-8' );
		header( 'Content-Disposition: attachment; filename=qwsc-support-' . gmdate( 'Y-m-d' ) . '.json' );
		echo wp_json_encode( $data, JSON_PRETTY_PRINT );
		exit;
	}
}