<?php
require_once 'PostmanModuleTransport.php';
/**
 * Postman Mailgun module
 *
 * @author jasonhendriks
 */
class PostmanMailgunTransport extends PostmanAbstractModuleTransport implements PostmanModuleTransport {
	const SLUG = 'mailgun_api';
	const PORT = 443;
	const HOST = 'api.mailgun.net';
	const EU_REGION = 'api.eu.mailgun.net';
	const PRIORITY = 8000;
	const MAILGUN_AUTH_OPTIONS = 'postman_mailgun_auth_options';
	const MAILGUN_AUTH_SECTION = 'postman_mailgun_auth_section';

	/**
	 *
	 * @param unknown $rootPluginFilenameAndPath
	 */
	public function __construct( $rootPluginFilenameAndPath ) {
		parent::__construct( $rootPluginFilenameAndPath );

		// add a hook on the plugins_loaded event
		add_action( 'admin_init', array(
				$this,
				'on_admin_init',
		) );
	}
	public function getProtocol() {
		return 'https';
	}

	// this should be standard across all transports
	public function getSlug() {
		return self::SLUG;
	}
	public function getName() {
		return __( 'Mailgun API', Postman::TEXT_DOMAIN );
	}
	/**
	 * v0.2.1
	 *
	 * @return string
	 */
	public function getHostname() {
		return ! is_null( $this->options->getMailgunRegion() ) ? self::EU_REGION : self::HOST;
	}
	/**
	 * v0.2.1
	 *
	 * @return string
	 */
	public function getPort() {
		return self::PORT;
	}
	/**
	 * v1.7.0
	 *
	 * @return string
	 */
	public function getTransportType() {
		return 'Mailgun_api';
	}

	/**
	 * (non-PHPdoc)
	 *
	 * @see PostmanModuleTransport::createMailEngine()
	 */
	public function createMailEngine() {
		$apiKey = $this->options->getMailgunApiKey();
		$domainName = $this->options->getMailgunDomainName();

		require_once 'PostmanMailgunMailEngine.php';
		$engine = new PostmanMailgunMailEngine( $apiKey, $domainName );
		return $engine;
	}
	public function getDeliveryDetails() {
		/* translators: where (1) is the secure icon and (2) is the transport name */
		return sprintf( __( 'Post SMTP will send mail via the <b>%1$s %2$s</b>.', Postman::TEXT_DOMAIN ), '🔐', $this->getName() );
	}

	/**
	 *
	 * @param unknown $data
	 */
	public function prepareOptionsForExport( $data ) {
		$data = parent::prepareOptionsForExport( $data );
		$data [ PostmanOptions::MAILGUN_API_KEY ] = PostmanOptions::getInstance()->getMailgunApiKey();
		return $data;
	}

	/**
	 * (non-PHPdoc)
	 *
	 * @see PostmanTransport::getMisconfigurationMessage()
	 */
	protected function validateTransportConfiguration() {
		$messages = parent::validateTransportConfiguration();
		$apiKey = $this->options->getMailgunApiKey();
		$domainName = $this->options->getMailgunDomainName();

		if ( empty( $apiKey ) ) {
			array_push( $messages, __( 'API Key can not be empty', Postman::TEXT_DOMAIN ) . '.' );
			$this->setNotConfiguredAndReady();
		}

		if ( empty( $domainName ) ) {
			array_push( $messages, __( 'Domain Name can not be empty', Postman::TEXT_DOMAIN ) . '.' );
			$this->setNotConfiguredAndReady();
		}

		if ( ! $this->isSenderConfigured() ) {
			array_push( $messages, __( 'Message From Address can not be empty', Postman::TEXT_DOMAIN ) . '.' );
			$this->setNotConfiguredAndReady();
		}
		return $messages;
	}

	/**
	 * (non-PHPdoc)
	 *
	 * @see PostmanModuleTransport::getConfigurationBid()
	 */
	public function getConfigurationBid( PostmanWizardSocket $hostData, $userAuthOverride, $originalSmtpServer ) {
		$recommendation = array();
		$recommendation ['priority'] = 0;
		$recommendation ['transport'] = self::SLUG;
		$recommendation ['hostname'] = null; // scribe looks this
		$recommendation ['label'] = $this->getName();
		if ( $hostData->hostname == $this->getHostname() && $hostData->port == self::PORT ) {
			$recommendation ['priority'] = self::PRIORITY;
			/* translators: where variables are (1) transport name (2) host and (3) port */
			$recommendation ['message'] = sprintf( __( ('Postman recommends the %1$s to host %2$s on port %3$d.') ), $this->getName(), $this->getHostname(), self::PORT );
		}
		return $recommendation;
	}

	/**
	 *
	 * @param unknown $hostname
	 * @param unknown $response
	 */
	public function populateConfiguration( $hostname ) {
		$response = parent::populateConfiguration( $hostname );
		return $response;
	}

	/**
	 */
	public function createOverrideMenu( PostmanWizardSocket $socket, $winningRecommendation, $userSocketOverride, $userAuthOverride ) {
		$overrideItem = parent::createOverrideMenu( $socket, $winningRecommendation, $userSocketOverride, $userAuthOverride );
		// push the authentication options into the $overrideItem structure
		$overrideItem ['auth_items'] = array(
				array(
						'selected' => true,
						'name' => __( 'API Key', Postman::TEXT_DOMAIN ),
						'value' => 'api_key',
				),
		);
		return $overrideItem;
	}

	/**
	 * Functions to execute on the admin_init event
	 *
	 * "Runs at the beginning of every admin page before the page is rendered."
	 * ref: http://codex.wordpress.org/Plugin_API/Action_Reference#Actions_Run_During_an_Admin_Page_Request
	 */
	public function on_admin_init() {
		// only administrators should be able to trigger this
		if ( PostmanUtils::isAdmin() ) {
			$this->addSettings();
			$this->registerStylesAndScripts();
		}
	}

	/*
	 * What follows in the code responsible for creating the Admin Settings page
	 */

	/**
	 */
	public function addSettings() {
		// the Mailgun Auth section
		add_settings_section( PostmanMailgunTransport::MAILGUN_AUTH_SECTION, __( 'Authentication', Postman::TEXT_DOMAIN ), array(
				$this,
				'printMailgunAuthSectionInfo',
		), PostmanMailgunTransport::MAILGUN_AUTH_OPTIONS );

		add_settings_field( PostmanOptions::MAILGUN_API_KEY, __( 'API Key', Postman::TEXT_DOMAIN ), array(
				$this,
				'mailgun_api_key_callback',
		), PostmanMailgunTransport::MAILGUN_AUTH_OPTIONS, PostmanMailgunTransport::MAILGUN_AUTH_SECTION );

		add_settings_field( PostmanOptions::MAILGUN_DOMAIN_NAME, __( 'Domain Name', Postman::TEXT_DOMAIN ), array(
			$this,
			'mailgun_domain_name_callback',
		), PostmanMailgunTransport::MAILGUN_AUTH_OPTIONS, PostmanMailgunTransport::MAILGUN_AUTH_SECTION );

		add_settings_field( PostmanOptions::MAILGUN_REGION, __( 'Mailgun Europe Region?', Postman::TEXT_DOMAIN ), array(
			$this,
			'mailgun_region_callback',
		), PostmanMailgunTransport::MAILGUN_AUTH_OPTIONS, PostmanMailgunTransport::MAILGUN_AUTH_SECTION );
	}
	public function printMailgunAuthSectionInfo() {
		/* Translators: Where (1) is the service URL and (2) is the service name and (3) is a api key URL */
		printf( '<p id="wizard_mailgun_auth_help">%s</p>', sprintf( __( 'Create an account at <a href="%1$s" target="_blank">%2$s</a> and enter <a href="%3$s" target="_blank">an API key</a> below.', Postman::TEXT_DOMAIN ), 'https://mailgun.com', 'mailgun.com', 'https://app.mailgun.com/app/domains/' ) );
	}

	/**
	 */
	public function mailgun_api_key_callback() {
		printf( '<input type="password" autocomplete="off" id="mailgun_api_key" name="postman_options[mailgun_api_key]" value="%s" size="60" class="required" placeholder="%s"/>', null !== $this->options->getMailgunApiKey() ? esc_attr( PostmanUtils::obfuscatePassword( $this->options->getMailgunApiKey() ) ) : '', __( 'Required', Postman::TEXT_DOMAIN ) );
		print '<input type="button" id="toggleMailgunApiKey" value="Show Password" class="button button-secondary" style="visibility:hidden" />';
	}

	function mailgun_domain_name_callback() {
		printf( '<input type="text" autocomplete="off" id="mailgun_domain_name" name="postman_options[mailgun_domain_name]" value="%s" size="60" class="required" placeholder="%s"/>', null !== $this->options->getMailgunDomainName() ? esc_attr( $this->options->getMailgunDomainName() ) : '', __( 'Required', Postman::TEXT_DOMAIN ) );
	}

	function mailgun_region_callback() {
		$value = $this->options->getMailgunRegion();
		printf( '<input type="checkbox" id="mailgun_region" name="postman_options[mailgun_region]"%s />', null !== $value ? ' checked' : '' );
	}

	/**
	 */
	public function registerStylesAndScripts() {
		// register the stylesheet and javascript external resources
		$pluginData = apply_filters( 'postman_get_plugin_metadata', null );
		wp_register_script( 'postman_mailgun_script', plugins_url( 'Postman/Postman-Mail/postman_mailgun.js', $this->rootPluginFilenameAndPath ), array(
				PostmanViewController::JQUERY_SCRIPT,
				'jquery_validation',
				PostmanViewController::POSTMAN_SCRIPT,
		), $pluginData ['version'] );
	}

	/**
	 */
	public function enqueueScript() {
		wp_enqueue_script( 'postman_mailgun_script' );
	}

	/**
	 */
	public function printWizardAuthenticationStep() {
		print '<section class="wizard_mailgun">';
		$this->printMailgunAuthSectionInfo();
		printf( '<label for="api_key">%s</label>', __( 'API Key', Postman::TEXT_DOMAIN ) );
		print '<br />';
		print $this->mailgun_api_key_callback();
		printf( '<label for="domain_name">%s</label>', __( 'Domain Name', Postman::TEXT_DOMAIN ) );
		print '<br />';
		print $this->mailgun_domain_name_callback();
		print '<br />';
		printf( '<label for="mailgun_region">%s</label>', __( 'Mailgun Europe Region?', Postman::TEXT_DOMAIN ) );
		print '<br />';
		print $this->mailgun_region_callback();
		print '</section>';
	}
}
