<?php

namespace TwoFAS\TwoFAS\Hooks;

use RuntimeException;
use TwoFAS\TwoFAS\Helpers\Config;
use TwoFAS\TwoFAS\Readme\Downloader;
use TwoFAS\TwoFAS\Readme\Readme;
use TwoFAS\TwoFAS\Readme\Upgrade_Notice;
use TwoFAS\TwoFAS\Templates\Twig;
use TwoFAS\TwoFAS\Update\Plugin_Version;

class In_Plugin_Update_Message_Action implements Hook_Interface {

	/**
	 * @var Downloader
	 */
	private $downloader;

	/**
	 * @var Config
	 */
	private $config;

	/**
	 * @var Plugin_Version
	 */
	private $plugin_version;

	/**
	 * @var Twig
	 */
	private $twig;

	/**
	 * @param Downloader     $downloader
	 * @param Config         $config
	 * @param Plugin_Version $plugin_version
	 * @param Twig           $twig
	 */
	public function __construct( Downloader $downloader, Config $config, Plugin_Version $plugin_version, Twig $twig ) {
		$this->downloader     = $downloader;
		$this->config         = $config;
		$this->plugin_version = $plugin_version;
		$this->twig           = $twig;
	}

	public function register_hook() {
		add_action( 'in_plugin_update_message-' . TWOFAS_PLUGIN_BASENAME, array( $this, 'show_upgrade_notice' ) );
	}

	public function show_upgrade_notice() {
		try {
			$readme     = $this->downloader->download( $this->config->get_readme_url() );
			$paragraphs = $this->get_paragraphs( $readme );
		} catch ( RuntimeException $e ) {
			$paragraphs = array();
		}

		if ( empty( $paragraphs ) ) {
			return;
		}

		echo $this->twig->get_view( 'dashboard/admin/upgrade-notice.html.twig', array( 'paragraphs' => $paragraphs ) );
	}

	/**
	 * @param Readme $readme
	 *
	 * @return array
	 *
	 * @throws RuntimeException
	 */
	private function get_paragraphs( Readme $readme ) {
		$upgrade_notice = new Upgrade_Notice( $this->plugin_version, $readme );

		return $upgrade_notice->get_paragraphs();
	}
}