<?php
/**
 * Shared base for ReturnKit emails (WooCommerce email classes, so they show
 * up under WooCommerce → Settings → Emails with WooCommerce's own styling,
 * and their templates can be overridden in the theme).
 *
 * @package ReturnKit
 */

namespace ReturnKit\Emails;

use ReturnKit\Domain\Labels;
use ReturnKit\Domain\Request;

defined( 'ABSPATH' ) || exit;

/**
 * Base email.
 */
abstract class Base extends \WC_Email {

	/**
	 * Request being emailed about.
	 *
	 * @var Request|null
	 */
	public $request = null;

	/**
	 * Extra template variables.
	 *
	 * @var array
	 */
	public $extra = array();

	/**
	 * Template file names relative to templates/ (set by subclasses).
	 *
	 * @var string
	 */
	protected $template_name = '';

	/**
	 * Constructor.
	 */
	public function __construct() {
		$this->template_base  = RTKT_DIR . 'templates/';
		$this->template_html  = 'emails/' . $this->template_name . '.php';
		$this->template_plain = 'emails/plain/' . $this->template_name . '.php';
		$this->placeholders   = array_merge(
			array(
				'{request_number}' => '',
				'{order_number}'   => '',
				'{request_type}'   => '',
			),
			$this->placeholders
		);
		parent::__construct();
	}

	/**
	 * Prepare placeholders and the recipient for a request.
	 *
	 * @param Request $request Request.
	 * @return void
	 */
	protected function setup( Request $request ) {
		$this->setup_locale();
		$this->request                          = $request;
		$this->object                           = $request->order();
		$this->placeholders['{request_number}'] = $request->number();
		$this->placeholders['{order_number}']   = $this->object ? $this->object->get_order_number() : (string) ( $request->meta( 'statement', array() )['order_number'] ?? '' );
		$this->placeholders['{request_type}']   = Labels::type_lower( $request->type() );
		if ( $this->object ) {
			$this->placeholders['{order_date}'] = wc_format_datetime( $this->object->get_date_created() );
		}
	}

	/**
	 * Send and restore the locale.
	 *
	 * @return bool
	 */
	protected function dispatch() {
		$sent = false;
		if ( $this->is_enabled() && $this->get_recipient() ) {
			$sent = (bool) $this->send( $this->get_recipient(), $this->get_subject(), $this->get_content(), $this->get_headers(), $this->get_attachments() );
		}
		$this->restore_locale();
		return $sent;
	}

	/**
	 * Template variables.
	 *
	 * @param bool $plain Plain text.
	 * @return array
	 */
	protected function template_args( $plain ) {
		return array_merge(
			array(
				'request'            => $this->request,
				'order'              => $this->object,
				'email_heading'      => $this->get_heading(),
				'additional_content' => $this->get_additional_content(),
				'sent_to_admin'      => false,
				'plain_text'         => $plain,
				'email'              => $this,
			),
			$this->extra
		);
	}

	/**
	 * HTML content.
	 *
	 * @return string
	 */
	public function get_content_html() {
		return wc_get_template_html( $this->template_html, $this->template_args( false ), 'woocommerce/returnkit/', $this->template_base );
	}

	/**
	 * Plain content.
	 *
	 * @return string
	 */
	public function get_content_plain() {
		return wc_get_template_html( $this->template_plain, $this->template_args( true ), 'woocommerce/returnkit/', $this->template_base );
	}

	/**
	 * Template overrides live in yourtheme/woocommerce/returnkit/emails/.
	 *
	 * @param string $template Template.
	 * @return string
	 */
	public function get_theme_template_file( $template ) {
		return get_stylesheet_directory() . '/woocommerce/returnkit/' . $template;
	}
}