<?php
/**
 * Account emails: login codes, password reset and welcome.
 *
 * @package SpaceBay
 */

namespace SpaceBay\Auth;

use SpaceBay\Core\Settings;
use SpaceBay\Frontend\Portal;
use SpaceBay\Notifications\Mailer;

defined( 'ABSPATH' ) || exit;

/**
 * Sends account emails with the community email template. These are sent
 * right away and even when notification emails are switched off, because
 * members cannot log in without them.
 */
final class Mail {

	/**
	 * Sends one account email.
	 *
	 * @param int   $user_id User ID.
	 * @param array $parts   {
	 *     Email parts.
	 *
	 *     @type string $subject Subject, without the community name.
	 *     @type string $text    Main sentence.
	 *     @type string $excerpt Extra explanation, optional.
	 *     @type string $code    Code shown in large type, optional.
	 *     @type string $url     Button link, optional.
	 *     @type string $button  Button label, optional.
	 * }
	 * @return bool Whether the email was handed to the mail server.
	 */
	public static function send( $user_id, array $parts ) {
		$user = get_userdata( $user_id );

		if ( ! $user || ! is_email( $user->user_email ) ) {
			return false;
		}

		$community = (string) Settings::get( 'community_name' );
		$subject   = sprintf(
			/* translators: 1: Community name, 2: Notification text. */
			__( '[%1$s] %2$s', 'spacebay' ),
			wp_specialchars_decode( $community, ENT_QUOTES ),
			$parts['subject']
		);

		$html = Mailer::render(
			array(
				'community_name' => $community,
				'text'           => $parts['text'],
				'excerpt'        => (string) ( $parts['excerpt'] ?? '' ),
				'code'           => (string) ( $parts['code'] ?? '' ),
				'url'            => (string) ( $parts['url'] ?? Portal::url() ),
				'button'         => (string) ( $parts['button'] ?? '' ),
				'settings_url'   => Portal::link( 'account/security' ),
				'footer'         => __( 'You receive this email because it is about your account. It is sent even when notification emails are off.', 'spacebay' ),
				'brand_color'    => Mailer::readable_color( (string) Settings::get( 'brand_color', '#3f22ff' ) ),
				'recipient'      => $user->display_name,
				'logo_url'       => Settings::get( 'logo_id' ) ? (string) wp_get_attachment_image_url( (int) Settings::get( 'logo_id' ), 'medium' ) : '',
			)
		);

		$headers = array( 'Content-Type: text/html; charset=UTF-8' );
		$from    = sanitize_email( (string) Settings::get( 'email_from_address', '' ) );

		if ( $from ) {
			$name      = str_replace( array( "\r", "\n", '"' ), '', (string) Settings::get( 'email_from_name', $community ) );
			$name      = '' !== $name ? $name : str_replace( array( "\r", "\n", '"' ), '', wp_specialchars_decode( $community, ENT_QUOTES ) );
			$headers[] = sprintf( 'From: "%s" <%s>', $name, $from );
		}

		/**
		 * Filters an account email (login code, password reset, welcome) before it is sent.
		 *
		 * @since 1.0.0
		 *
		 * @param array $email {
		 *     Email parts.
		 *
		 *     @type string   $to      Recipient address.
		 *     @type string   $subject Subject.
		 *     @type string   $message HTML body.
		 *     @type string[] $headers Headers.
		 * }
		 * @param int   $user_id User ID.
		 * @param array $parts   Parts the email was built from.
		 */
		$email = apply_filters(
			'spacebay_account_email',
			array(
				'to'      => $user->user_email,
				'subject' => $subject,
				'message' => $html,
				'headers' => $headers,
			),
			(int) $user_id,
			$parts
		);

		return (bool) wp_mail( $email['to'], $email['subject'], $email['message'], $email['headers'] );
	}
}