<?php

namespace DeliciousBrains\WPMDB\Common\MF;

use DeliciousBrains\WPMDB\Common\Filesystem\Filesystem;
use DeliciousBrains\WPMDB\Common\Transfers\Files\Excludes;
use DeliciousBrains\WPMDB\Common\Properties\Properties;
use DeliciousBrains\WPMDB\Common\Util\Util;
use DeliciousBrains\WPMDB\Common\Addon\Addon;
use DeliciousBrains\WPMDB\Common\Addon\AddonAbstract;
use DeliciousBrains\WPMDB\Data\Stage;

/**
 * Class MediaFilesAddon
 *
 * @package DeliciousBrains\WPMDB\Common\MF
 */
class MediaFilesAddon extends AddonAbstract {

	/**
	 * An array strings used for translations
	 *
	 * @var array
	 */
	protected $media_strings;

	const MDB_VERSION_REQUIRED = '1.9.6';
	/**
	 * @var Util
	 */
	private $util;

	/**
	 * @var \DeliciousBrains\WPMDB\Common\Transfers\Files\Util
	 */
	private $transfers_util;

	/**
	 * @var Filesystem
	 */
	private $filesystem;

	/**
	 * @var string
	 */
	private $plugin_path;

	public function __construct(
		Addon $addon,
		Properties $properties,
		Util $util,
		\DeliciousBrains\WPMDB\Common\Transfers\Files\Util $transfers_util,
		Filesystem $filesystem
	) {
		parent::__construct( $addon, $properties );

		$this->plugin_slug    = $properties->plugin_slug;
		$this->plugin_version = $properties->plugin_version;
		$this->plugin_path    = $properties->plugin_folder_name;

		// @TODO see if this works
		$this->util           = $util;
		$this->transfers_util = $transfers_util;
		$this->filesystem     = $filesystem;
	}

	public function register() {
		add_action( 'wpmdb_load_assets', array( $this, 'load_assets' ) );

		add_filter( 'wpmdb_diagnostic_info', array( $this, 'diagnostic_info' ) );
		add_filter( 'wpmdb_establish_remote_connection_data', array( $this, 'establish_remote_connection_data' ) );
		add_filter( 'wpmdb_data', array( $this, 'js_variables' ) );

		add_action( 'wpmdb_migration_complete', array( $this, 'cleanup_transfer_migration' ) );
		add_filter( 'wpmdb_site_details', array( $this, 'filter_site_details' ) );
	}

	/**
	 *
	 * Strings are used on the CLI
	 * Get translated strings for javascript and other functions
	 *
	 * @return array Array of translations
	 *
	 */
	function get_strings() {
		$strings = array(
			'migrate_media_files_pull' => __( 'Downloading files', 'wp-migrate-db' ),
			'migrate_media_files_push' => __( 'Uploading files', 'wp-migrate-db' ),
		);

		if ( is_null( $this->media_strings ) ) {
			$this->media_strings = $strings;
		}

		return $this->media_strings;
	}

	/**
	 * Load media related assets in core plugin
	 */
	function load_assets() {
		$version    = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? time() : $this->plugin_version;
		$public_url = plugins_url( $this->plugin_path . "/frontend/public/" );
		$src        = $public_url . 'noop.js';

		wp_enqueue_script(
			'wp-migrate-db-pro-media-files-script',
			$src,
			array( 'jquery', 'wp-migrate-db-pro-script-v2' ),
			$version,
			true
		);

		wp_localize_script( 'wp-migrate-db-pro-media-files-script', 'wpmdbmf_strings', $this->get_strings() );
		wp_localize_script(
			'wp-migrate-db-pro-media-files-script',
			'wpmdbmf',
			[ 'enabled' => true ]
		);

		if ( $this->util->isMDBPage() ) {
			wp_enqueue_style(
				'wp-migrate-db-pro-media-files-styles',
				$public_url . 'noop.css',
				array( 'wp-components' ),
				$version
			);
		}
	}

	/**
	 * Check the remote site has the media addon setup
	 *
	 * @param array $data Connection data
	 *
	 * @return array Updated connection data
	 */
	function establish_remote_connection_data( $data ) {
		$data['media_files_available'] = '1';
		$data['media_files_version']   = $this->plugin_version;
		if ( function_exists( 'ini_get' ) ) {
			$max_file_uploads = ini_get( 'max_file_uploads' );
		}
		$max_file_uploads                     = ( empty( $max_file_uploads ) ) ? 20 : $max_file_uploads;
		$data['media_files_max_file_uploads'] = apply_filters( 'wpmdbmf_max_file_uploads', $max_file_uploads );

		return $data;
	}

	/**
	 * Add media related javascript variables to the page
	 *
	 * @param array $data
	 *
	 * @return array
	 */
	function js_variables( $data ) {
		$data['media_files_version']  = $this->plugin_version;
		$data['mf_is_licensed']       = $this->licensed ? '1' : '0';
		$data['media_files_excludes'] = Excludes::get_excludes_for_stage( Stage::MEDIA_FILES );

		return $data;
	}

	/**
	 * Adds extra information to the core plugin's diagnostic info
	 */
	function diagnostic_info( $diagnostic_info ) {
		$diagnostic_info['media-files'] = array(
			"Media Uploads",
			'Transfer Bottleneck'       => size_format( $this->transfers_util->get_transfer_bottleneck() ),
			'Upload Folder Permissions' => decoct( fileperms( $this->filesystem->get_wp_upload_dir() ) & 0777 ),
			'Free Space'                => Util::disk_free_space_hr( \DeliciousBrains\WPMDB\Common\Transfers\Files\Util::get_wp_uploads_dir() ),
		);

		return $diagnostic_info;
	}

	public function cleanup_transfer_migration() {
		$uploads = \DeliciousBrains\WPMDB\Common\Transfers\Files\Util::get_wp_uploads_dir();

		$this->transfers_util->remove_manifests( $uploads );
	}

	/**
	 * @param $site_details
	 *
	 * @return mixed
	 */
	public function filter_site_details( $site_details ) {
		if ( isset( $site_details['plugins'] ) ) {
			return $site_details;
		}

		if (
			array_key_exists( 'max_request', $site_details ) &&
			array_key_exists( 'transfer_bottleneck', $site_details )
		) {
			return $site_details;
		}

		$site_details['content_dir']         = $this->filesystem->slash_one_direction( WP_CONTENT_DIR );
		$site_details['transfer_bottleneck'] = $this->transfers_util->get_transfer_bottleneck();
		$site_details['max_request_size']    = $this->util->get_bottleneck();
		$site_details['php_os']              = PHP_OS;

		return $site_details;
	}
}