<?php
/**
 * Tells administrators when a report needs them.
 *
 * @package TurtleReport
 */

namespace TurtleReport\Delivery;

use TurtleReport\Support\AdminLinks;
use TurtleReport\Profiles\Profile;
use TurtleReport\Settings\Settings;

defined( 'ABSPATH' ) || exit;

/**
 * Sends one plain email to the alert recipients (Settings → Connection
 * alerts) when a report is ready for review, or was held because it was
 * incomplete. Each run notifies at most once per reason.
 */
final class Notifier {

	/**
	 * Install settings.
	 *
	 * @var Settings
	 */
	private $settings;

	/**
	 * Constructor.
	 *
	 * @param Settings $settings Install settings.
	 */
	public function __construct( Settings $settings ) {
		$this->settings = $settings;
	}

	/**
	 * Sends the notice.
	 *
	 * @param Profile $site Site.
	 * @param array   $run  Run.
	 * @param string  $why  review or held.
	 * @return bool Whether the mail system accepted it.
	 */
	public function notify( Profile $site, array $run, $why ) {
		$blog   = wp_specialchars_decode( (string) get_bloginfo( 'name' ), ENT_QUOTES );
		$label  = ReportBuilder::label( RunRepository::period( $run ), isset( $run['meta']['frequency'] ) ? (string) $run['meta']['frequency'] : '' );
		$url    = AdminLinks::url( AdminLinks::DELIVERIES, array( 'run' => (int) $run['id'] ) );
		$checks = Readiness::problems( is_array( $run['checks'] ) ? $run['checks'] : array() );
		$lines  = array();
		if ( 'review' === $why ) {
			/* translators: 1: WordPress site name, 2: report site name, 3: period. */
			$subject = sprintf( __( '[%1$s] Report ready for review: %2$s · %3$s', 'turtlereport' ), $blog, $site->display_name(), $label );
			/* translators: 1: report site name, 2: period. */
			$lines[] = sprintf( __( 'The %2$s report for %1$s is ready. It won\'t be sent until someone approves it.', 'turtlereport' ), $site->display_name(), $label );
			$lines[] = __( 'Preview it, edit the highlights and notes, then approve and send:', 'turtlereport' ) . "\n" . $url;
		} else {
			/* translators: 1: WordPress site name, 2: report site name, 3: period. */
			$subject = sprintf( __( '[%1$s] Report held, data incomplete: %2$s · %3$s', 'turtlereport' ), $blog, $site->display_name(), $label );
			/* translators: 1: report site name, 2: period. */
			$lines[] = sprintf( __( 'The %2$s report for %1$s wasn\'t sent because some of its data couldn\'t be loaded.', 'turtlereport' ), $site->display_name(), $label );
			$lines[] = __( 'Fix the problem and prepare it again, or send it anyway with a warning, here:', 'turtlereport' ) . "\n" . $url;
		}
		if ( $checks ) {
			$lines[] = __( 'What was found:', 'turtlereport' ) . "\n" . implode(
				"\n",
				array_map(
					static function ( $c ) {
						return '- ' . $c['message'];
					},
					array_slice( $checks, 0, 6 )
				)
			);
		}
		$lines[] = __( 'You get this because you receive TurtleReport alerts (TurtleReport → Settings).', 'turtlereport' );
		return (bool) wp_mail( $this->settings->alert_recipients(), $subject, implode( "\n\n", $lines ) );
	}
}