<?php
if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

require_once dirname(__DIR__) . '/PostmanLogFields.php';
require_once 'PostmanEmailLogService.php';
require_once 'PostmanEmailLogView.php';

/**
 *
 * @author jasonhendriks
 */
class PostmanEmailLogController {
	const RESEND_MAIL_AJAX_SLUG = 'postman_resend_mail';
	private $rootPluginFilenameAndPath;
	private $logger;

	/**
	 */
	function __construct( $rootPluginFilenameAndPath ) {
		$this->rootPluginFilenameAndPath = $rootPluginFilenameAndPath;
		$this->logger = new PostmanLogger( get_class( $this ) );
		if ( PostmanOptions::getInstance()->isMailLoggingEnabled() ) {
			add_action( 'admin_menu', array(
					$this,
					'postmanAddMenuItem',
			),20 );
		} else {
			$this->logger->trace( 'not creating PostmanEmailLog admin menu item' );
		}
		if ( PostmanUtils::isCurrentPagePostmanAdmin( 'postman_email_log' ) ) {
			$this->logger->trace( 'on postman email log page' );
			// $this->logger->debug ( 'Registering ' . $actionName . ' Action Post handler' );
			add_action( 'admin_post_delete', array(
					$this,
					'delete_log_item',
			) );
			add_action( 'admin_post_view', array(
					$this,
					'view_log_item',
			) );
			add_action( 'admin_post_transcript', array(
					$this,
					'view_transcript_log_item',
			) );
			add_action( 'admin_init', array(
					$this,
					'on_admin_init',
			) );
		}

        add_action( 'wp_ajax_post_smtp_log_trash_all', array( $this, 'post_smtp_log_trash_all' ) );

		if ( is_admin() ) {
			$actionName = self::RESEND_MAIL_AJAX_SLUG;
			$fullname = 'wp_ajax_' . $actionName;
			// $this->logger->debug ( 'Registering ' . 'wp_ajax_' . $fullname . ' Ajax handler' );
			add_action( $fullname, array(
					$this,
					'resendMail',
			) );
		}
	}

	function post_smtp_log_trash_all() {
	    check_admin_referer('post-smtp', 'security' );

	    if ( ! current_user_can( Postman::MANAGE_POSTMAN_CAPABILITY_LOGS ) ) {
	        wp_send_json_error( 'No permissions to manage Post SMTP logs.');
        }

	    $purger = new PostmanEmailLogPurger();
	    $purger->removeAll();
	    wp_send_json_success();
    }

	/**
	 */
	function on_admin_init() {
		$this->handleBulkAction();
		// register the stylesheet and javascript external resources
		$pluginData = apply_filters( 'postman_get_plugin_metadata', null );
		wp_register_script( 'postman_resend_email_script', plugins_url( 'script/postman_resend_email_sript.js', $this->rootPluginFilenameAndPath ), array(
				PostmanViewController::JQUERY_SCRIPT,
				PostmanViewController::POSTMAN_SCRIPT,
		), $pluginData ['version'] );
		$this->handleCsvExport();
	}

	function handleCsvExport() {
	    if ( ! isset( $_GET['postman_export_csv'] ) ) {
	        return;
        }

        if ( ! isset( $_REQUEST['post-smtp-log-nonce'] ) || ! wp_verify_nonce( $_REQUEST['post-smtp-log-nonce'], 'post-smtp' ) ) {
            wp_die( 'Security check' );
        }

        if (  current_user_can( Postman::MANAGE_POSTMAN_CAPABILITY_LOGS ) ) {
            $args = array(
                'post_type' => PostmanEmailLogPostType::POSTMAN_CUSTOM_POST_TYPE_SLUG,
                'post_status' => PostmanEmailLogService::POSTMAN_CUSTOM_POST_STATUS_PRIVATE,
                'posts_per_page' => -1,
            );
            $logs = new WP_Query($args);

            if ( empty( $logs->posts ) ) {
                return;
            }

            header('Content-Type: text/csv');
            header('Content-Disposition: attachment; filename="email-logs.csv"');

            $fp = fopen('php://output', 'wb');

            $headers = array_keys( PostmanLogFields::get_instance()->get_fields() );
            $headers[] = 'delivery_time';

            fputcsv($fp, $headers);

	        $date_format = get_option( 'date_format' );
	        $time_format = get_option( 'time_format' );

            foreach ( $logs->posts as $log ) {
                $meta = PostmanLogFields::get_instance()->get($log->ID);
                $data = [];
                foreach ( $meta as $header => $line ) {
                    $data[] = $line[0];
                }
                $data[] = date( "$date_format $time_format", strtotime( $log->post_date ) );
                fputcsv($fp, $data);
            }

            fclose($fp);
            die();

        }
    }

	/**
	 */
	public function resendMail() {
        check_admin_referer( 'resend', 'security' );

		// get the email address of the recipient from the HTTP Request
		$postid = $this->getRequestParameter( 'email' );
		if ( ! empty( $postid ) ) {
			$meta_values = PostmanLogFields::get_instance()->get( $postid );

			if ( isset( $_POST['mail_to'] ) && ! empty( $_POST['mail_to'] ) ) {
				$emails = explode( ',', $_POST['mail_to'] );
				$to = array_map( 'sanitize_email', $emails );
			} else {
				$to = $meta_values ['original_to'] [0];
			}

			$success = wp_mail( $to, $meta_values ['original_subject'] [0], $meta_values ['original_message'] [0], $meta_values ['original_headers'] [0] );

			// Postman API: retrieve the result of sending this message from Postman
			$result = apply_filters( 'postman_wp_mail_result', null );
			$transcript = $result ['transcript'];

			// post-handling
			if ( $success ) {
				$this->logger->debug( 'Email was successfully re-sent' );
				// the message was sent successfully, generate an appropriate message for the user
				$statusMessage = sprintf( __( 'Your message was delivered (%d ms) to the SMTP server! Congratulations :)', 'post-smtp' ), $result ['time'] );

				// compose the JSON response for the caller
				$response = array(
						'message' => $statusMessage,
						'transcript' => $transcript,
				);
				$this->logger->trace( 'AJAX response' );
				$this->logger->trace( $response );
				// send the JSON response
				wp_send_json_success( $response );
			} else {
				$this->logger->error( 'Email was not successfully re-sent - ' . $result ['exception']->getCode() );
				// the message was NOT sent successfully, generate an appropriate message for the user
				$statusMessage = $result ['exception']->getMessage();

				// compose the JSON response for the caller
				$response = array(
						'message' => $statusMessage,
						'transcript' => $transcript,
				);
				$this->logger->trace( 'AJAX response' );
				$this->logger->trace( $response );
				// send the JSON response
				wp_send_json_error( $response );
			}
		} else {
			// compose the JSON response for the caller
			$response = array();
			// send the JSON response
			wp_send_json_error( $response );
		}
	}

	/**
	 * TODO move this somewhere reusable
	 *
	 * @param mixed $parameterName
	 * @return mixed
	 */
	private function getRequestParameter( $parameterName ) {
		if ( isset( $_POST [ $parameterName ] ) ) {
			$value = filter_var( $_POST [ $parameterName ], FILTER_SANITIZE_STRING );
			$this->logger->trace( sprintf( 'Found parameter "%s"', $parameterName ) );
			$this->logger->trace( $value );
			return $value;
		}
	}

	/**
	 * From https://www.skyverge.com/blog/add-custom-bulk-action/
	 */
	function handleBulkAction() {
		// only do this for administrators
		if ( PostmanUtils::isAdmin() && isset( $_REQUEST ['email_log_entry'] ) ) {
			$this->logger->trace( 'handling bulk action' );
			if ( wp_verify_nonce( $_REQUEST ['_wpnonce'], 'bulk-email_log_entries' ) ) {
				$this->logger->trace( sprintf( 'nonce "%s" passed validation', sanitize_text_field($_REQUEST ['_wpnonce']) ) );
				if ( isset( $_REQUEST ['action'] ) && ($_REQUEST ['action'] == 'bulk_delete' || $_REQUEST ['action2'] == 'bulk_delete') ) {
					$this->logger->trace( sprintf( 'handling bulk delete' ) );
					$purger = new PostmanEmailLogPurger();
					$postids = array_map( 'absint', $_REQUEST ['email_log_entry'] );
					foreach ( $postids as $postid ) {
						$purger->verifyLogItemExistsAndRemove( $postid );
					}
					$mh = new PostmanMessageHandler();
					$mh->addMessage( __( 'Mail Log Entries were deleted.', 'post-smtp' ) );
				} else {
					$this->logger->warn( sprintf( 'action "%s" not recognized', sanitize_text_field($_REQUEST ['action']) ) );
				}
			} else {
				$this->logger->warn( sprintf( 'nonce "%s" failed validation', sanitize_text_field($_REQUEST ['_wpnonce']) ) );
			}
			$this->redirectToLogPage();
		}
	}

	/**
	 */
	function delete_log_item() {
		// only do this for administrators
		if ( PostmanUtils::isAdmin() ) {
			$this->logger->trace( 'handling delete item' );
			$postid = absint($_REQUEST ['email']);
			if ( wp_verify_nonce( $_REQUEST ['_wpnonce'], 'delete_email_log_item_' . $postid ) ) {
				$this->logger->trace( sprintf( 'nonce "%s" passed validation', sanitize_text_field($_REQUEST ['_wpnonce']) ) );
				$purger = new PostmanEmailLogPurger();
				$purger->verifyLogItemExistsAndRemove( $postid );
				$mh = new PostmanMessageHandler();
				$mh->addMessage( __( 'Mail Log Entry was deleted.', 'post-smtp' ) );
			} else {
				$this->logger->warn( sprintf( 'nonce "%s" failed validation', sanitize_text_field($_REQUEST ['_wpnonce']) ) );
			}
			$this->redirectToLogPage();
		}
	}

	/**
	 */
	function view_log_item() {
		// only do this for administrators
		if ( PostmanUtils::isAdmin() ) {
			$this->logger->trace( 'handling view item' );
			$postid = absint( $_REQUEST ['email'] );
			$post = get_post( $postid );

			if ( $post->post_type !== 'postman_sent_mail' ) {
			    return;
            }

			$meta_values = PostmanLogFields::get_instance()->get( $postid );
			// https://css-tricks.com/examples/hrs/
			print '<html><head><style>body {font-family: monospace;} hr {
    border: 0;
    border-bottom: 1px dashed #ccc;
    background: #bbb;
}</style></head><body>';
			print '<table>';
			if ( ! empty( $meta_values ['from_header'] [0] ) ) {
				printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'From', 'Who is this message From?', 'post-smtp' ), esc_html( $meta_values ['from_header'] [0] ) );
			}
			// show the To header (it's optional)
			if ( ! empty( $meta_values ['to_header'] [0] ) ) {
				printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'To', 'Who is this message To?', 'post-smtp' ), esc_html( $meta_values ['to_header'] [0] ) );
			}
			// show the Cc header (it's optional)
			if ( ! empty( $meta_values ['cc_header'] [0] ) ) {
				printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'Cc', 'Who is this message Cc\'d to?', 'post-smtp' ), esc_html( $meta_values ['cc_header'] [0] ) );
			}
			// show the Bcc header (it's optional)
			if ( ! empty( $meta_values ['bcc_header'] [0] ) ) {
				printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'Bcc', 'Who is this message Bcc\'d to?', 'post-smtp' ), esc_html( $meta_values ['bcc_header'] [0] ) );
			}
			// show the Reply-To header (it's optional)
			if ( ! empty( $meta_values ['reply_to_header'] [0] ) ) {
				printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', __( 'Reply-To', 'post-smtp' ), esc_html( $meta_values ['reply_to_header'] [0] ) );
			}
			printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'Date', 'What is the date today?', 'post-smtp' ), $post->post_date );
			printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'Subject', 'What is the subject of this message?', 'post-smtp' ), esc_html( $post->post_title ) );
			// The Transport UI is always there, in more recent versions that is
			if ( ! empty( $meta_values ['transport_uri'] [0] ) ) {
				printf( '<tr><th style="text-align:right">%s:</th><td>%s</td></tr>', _x( 'Delivery-URI', 'What is the unique URI of the configuration?', 'post-smtp' ), esc_html( $meta_values ['transport_uri'] [0] ) );
			}
			print '</table>';
			print '<hr/>';
			print '<pre>';
			print $this->sanitize_message( $post->post_content );
			print '</pre>';
			print '</body></html>';
			die();
		}
	}

	function sanitize_message( $message ) {
		$allowed_tags = wp_kses_allowed_html( 'post' );
		$allowed_tags['style'] = array();

		return wp_kses( $message, $allowed_tags );
	}

	/**
	 */
	function view_transcript_log_item() {
		// only do this for administrators
		if ( PostmanUtils::isAdmin() ) {
			$this->logger->trace( 'handling view transcript item' );
			$postid = absint($_REQUEST ['email']);
			$post = get_post( $postid );
			$meta_values = PostmanLogFields::get_instance()->get( $postid );
			// https://css-tricks.com/examples/hrs/
			print '<html><head><style>body {font-family: monospace;} hr {
    border: 0;
    border-bottom: 1px dashed #ccc;
    background: #bbb;
}</style></head><body>';
			printf( '<p>%s</p>', __( 'This is the conversation between Postman and the mail server. It can be useful for diagnosing problems. <b>DO NOT</b> post it on-line, it may contain your account password.', 'post-smtp' ) );
			print '<hr/>';
			print '<pre>';
			if ( ! empty( $meta_values ['session_transcript'] [0] ) ) {
				print esc_html( $meta_values ['session_transcript'] [0] );
			} else {
				/* Translators: Meaning "Not Applicable" */
				print __( 'n/a', 'post-smtp' );
			}
			print '</pre>';
			print '</body></html>';
			die();
		}
	}

	/**
	 * For whatever reason, PostmanUtils::get..url doesn't work here? :(
	 */
	function redirectToLogPage() {
		PostmanUtils::redirect( PostmanUtils::POSTMAN_EMAIL_LOG_PAGE_RELATIVE_URL );
		die();
	}

	/**
	 * Register the page
	 */
	function postmanAddMenuItem() {
		// only do this for administrators
		if ( PostmanUtils::isAdmin() ) {
			$this->logger->trace( 'created PostmanEmailLog admin menu item' );
			/*
			Translators where (%s) is the name of the plugin */
			$pageTitle = sprintf( __( '%s Email Log', 'post-smtp' ), __( 'Post SMTP', 'post-smtp' ) );
			$pluginName = _x( 'Email Log', 'The log of Emails that have been delivered', 'post-smtp' );

			$page = add_submenu_page( PostmanViewController::POSTMAN_MENU_SLUG, $pageTitle, $pluginName, Postman::MANAGE_POSTMAN_CAPABILITY_LOGS, 'postman_email_log', array( $this, 'postman_render_email_page' ) );

			// When the plugin options page is loaded, also load the stylesheet
			add_action( 'admin_print_styles-' . $page, array(
					$this,
					'postman_email_log_enqueue_resources',
			) );
		}
	}

	/**
	 * Enqueus Styles/ Scripts
	 * 
	 * @since 2.1 Changed stylesheet
	 * @version 1.0
	 */
	function postman_email_log_enqueue_resources() {

		wp_enqueue_style( PostmanViewController::POSTMAN_STYLE );
		wp_enqueue_script( 'postman_resend_email_script' );
		wp_enqueue_script( 'sprintf' );

	}

	/**
	 * *************************** RENDER TEST PAGE ********************************
	 * ******************************************************************************
	 * This function renders the admin page and the example list table.
	 * Although it's
	 * possible to call prepare_items() and display() from the constructor, there
	 * are often times where you may need to include logic here between those steps,
	 * so we've instead called those methods explicitly. It keeps things flexible, and
	 * it's the way the list tables are used in the WordPress core.
	 */
	function postman_render_email_page() {

		// Create an instance of our package class...
		$testListTable = new PostmanEmailLogView();
		wp_enqueue_script( 'postman_resend_email_script' );
		// Fetch, prepare, sort, and filter our data...
		$testListTable->prepare_items();

		?>
<div class="wrap">

	<div id="icon-users" class="icon32">
		<br />
	</div>
	<h2><?php
	/* Translators where (%s) is the name of the plugin */
		echo sprintf( __( '%s Email Log', 'post-smtp' ), __( 'Post SMTP', 'post-smtp' ) )?></h2>

    <?php //include_once POST_SMTP_PATH . '/Postman/extra/donation.php'; ?>

	<div class="ps-config-bar">
		<p><?php

		echo __( 'This is a record of deliveries made to the mail server. It does not neccessarily indicate sucessful delivery to the recipient.', 'post-smtp' )?></p>
	</div>

	<?php
	$from_date = isset( $_GET['from_date'] ) ? sanitize_text_field( $_GET['from_date'] ) : '';
	$to_date = isset( $_GET['to_date'] ) ? sanitize_text_field( $_GET['to_date'] ) : '';
	$search = isset( $_GET['search'] ) ? sanitize_text_field( $_GET['search'] ) : '';
	$page_records = apply_filters( 'postman_log_per_page', array( 10, 15, 25, 50, 75, 100 ) );
	$postman_page_records = isset( $_GET['postman_page_records'] ) ? absint( $_GET['postman_page_records'] ) : '';
	?>

	<form id="postman-email-log-filter" action="<?php echo admin_url( PostmanUtils::POSTMAN_EMAIL_LOG_PAGE_RELATIVE_URL ); ?>" method="get">
        <input type="hidden" name="page" value="postman_email_log">
        <input type="hidden" name="post-smtp-filter" value="1">
        <?php wp_nonce_field('post-smtp', 'post-smtp-log-nonce'); ?>

		<div id="email-log-filter" class="postman-log-row">
			<div class="form-control">
				<label for="from_date"><?php _e( 'From Date', 'post-smtp' ); ?></label>
				<input id="from_date" class="email-log-date" value="<?php echo esc_attr($from_date); ?>" type="text" name="from_date" placeholder="<?php _e( 'From Date', 'post-smtp' ); ?>">
			</div>
			<div class="form-control">
				<label for="to_date"><?php _e( 'To Date', 'post-smtp' ); ?></label>
				<input id="to_date" class="email-log-date" value="<?php echo esc_attr($to_date); ?>" type="text" name="to_date" placeholder="<?php _e( 'To Date', 'post-smtp' ); ?>">
			</div>
			<div class="form-control">
				<label for="search"><?php _e( 'Search', 'post-smtp' ); ?></label>
				<input id="search" type="text" name="search" value="<?php echo esc_attr($search); ?>" placeholder="<?php _e( 'Search', 'post-smtp' ); ?>">
			</div>
			<div class="form-control">
				<label id="postman_page_records"><?php _e( 'Records per page', 'post-smtp' ); ?></label>
				<select id="postman_page_records" name="postman_page_records">
					<?php
					foreach ( $page_records as $value ) {
						$selected = selected( $postman_page_records, $value, false );
						echo '<option value="' . $value . '"' . $selected . '>' . $value . '</option>';
					}
					?>
				</select>
			</div>

            <div class="form-control" style="padding: 0 5px 0 5px;">
                <button type="submit" name="filter" class="ps-btn-orange"><?php _e( 'Filter/Search', 'post-smtp' ); ?></button>
            </div>

            <div class="form-control" style="padding: 0 5px 0 0px;">
                <button type="submit" id="postman_export_csv" name="postman_export_csv" class="ps-btn-orange"><?php _e( 'Export To CSV', 'post-smtp' ); ?></button>
            </div>

			<div class="form-control">
				<button type="submit" id="postman_trash_all" name="postman_trash_all" class="ps-btn-red"><?php _e( 'Trash All', 'post-smtp' ); ?></button>
			</div>

        </div>
		<div class="error">Please notice: when you select a date for example 11/20/2017, behind the scene the query select <b>11/20/2017 00:00:00</b>.<br>So if you searching for an email arrived that day at any hour you need to select 11/20/2017 as the <b>From Date</b> and 11/21/2017 as the <b>To Date</b>.</div>
	</form>

	<!-- Forms are NOT created automatically, so you need to wrap the table in one to use features like bulk actions -->
	<form id="movies-filter" method="get">
		<!-- For plugins, we also need to ensure that the form posts back to our current page -->
		<input type="hidden" name="page"
			value="<?php echo filter_input( INPUT_GET, 'page', FILTER_SANITIZE_STRING ); ?>" />

		<!-- Now we can render the completed list table -->
			<?php $testListTable->display()?>
		</form>

		<?php add_thickbox(); ?>

</div>
<?php
	}
}
