<?php
/**
 * Coupons REST controller.
 *
 * @package HostKhata
 */

namespace HostKhata\Rest;

defined( 'ABSPATH' ) || exit;

use HostKhata\Core\Capabilities;
use HostKhata\Database\Repositories\CouponRepository;
use HostKhata\Domain\Coupons\CouponInput;
use HostKhata\Domain\Coupons\CouponService;
use HostKhata\Settings\Settings;
use HostKhata\Support\Date;
use WP_REST_Request;

/**
 * `/hostkhata/v1/coupons`. Needs `hostkhata_manage_orders`.
 *
 * @since 0.1.0
 */
final class CouponsController extends ResourceController {

	/**
	 * Route base.
	 *
	 * @var string
	 */
	protected $rest_base = 'coupons';

	/**
	 * Coupon service.
	 *
	 * @var CouponService
	 */
	private $service;

	/**
	 * Coupons.
	 *
	 * @var CouponRepository
	 */
	private $coupons;

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

	/**
	 * Constructor.
	 *
	 * @param CouponService    $service  Coupon service.
	 * @param CouponRepository $coupons  Coupons.
	 * @param Settings         $settings Settings.
	 */
	public function __construct( CouponService $service, CouponRepository $coupons, Settings $settings ) {
		$this->service  = $service;
		$this->coupons  = $coupons;
		$this->settings = $settings;
	}

	/**
	 * {@inheritdoc}
	 */
	protected function capability(): string {
		return Capabilities::MANAGE_ORDERS;
	}

	/**
	 * {@inheritdoc}
	 */
	protected function collection_args(): array {
		return array_merge(
			$this->list_params( array_keys( CouponRepository::ORDERBY ), 'id' ),
			array(
				'status' => array(
					'type'              => 'string',
					'default'           => '',
					'enum'              => array_merge( array( '' ), CouponInput::STATUSES ),
					'validate_callback' => 'rest_validate_request_arg',
				),
			)
		);
	}

	/**
	 * Implements the abstract method of the resource controller.
	 *
	 * @since 0.1.0
	 *
	 * @param WP_REST_Request $request Request.
	 * @return array{items: array<int, array<string, mixed>>, total: int}
	 */
	protected function query_items( WP_REST_Request $request ): array {
		return $this->coupons->query(
			array(
				'search'   => $request['search'],
				'status'   => $request['status'],
				'orderby'  => $request['orderby'],
				'order'    => $request['order'],
				'page'     => $request['page'],
				'per_page' => $request['per_page'],
			)
		);
	}

	/**
	 * Implements the abstract method of the resource controller.
	 *
	 * @since 0.1.0
	 *
	 * @param int $id Item id.
	 * @return array<string, mixed>|null
	 */
	protected function find_item( int $id ): ?array {
		return $this->coupons->find( $id );
	}

	/**
	 * Implements the abstract method of the resource controller.
	 *
	 * @since 0.1.0
	 *
	 * @param array<string, mixed> $body Request body.
	 * @return array<string, mixed>|\WP_Error
	 */
	protected function create_resource( array $body ) {
		return $this->service->create( $body );
	}

	/**
	 * Implements the abstract method of the resource controller.
	 *
	 * @since 0.1.0
	 *
	 * @param int                  $id Item id.
	 * @param array<string, mixed> $body Request body.
	 * @return array<string, mixed>|\WP_Error
	 */
	protected function update_resource( int $id, array $body ) {
		return $this->service->update( $id, $body );
	}

	/**
	 * Implements the abstract method of the resource controller.
	 *
	 * @since 0.1.0
	 *
	 * @param int $id Item id.
	 * @return true|\WP_Error
	 */
	protected function delete_resource( int $id ) {
		return $this->service->delete( $id );
	}

	/**
	 * {@inheritdoc}
	 */
	protected function not_found_message(): string {
		return __( 'Coupon not found.', 'hostkhata' );
	}

	/**
	 * Implements the abstract method of the resource controller.
	 *
	 * @since 0.1.0
	 *
	 * @param array<string, mixed> $item Item from the repository.
	 * @return array<string, mixed>
	 */
	protected function present( array $item ): array {
		$today = Date::today_gmt();

		if ( 'disabled' === $item['status'] ) {
			$state = 'disabled';
		} elseif ( '' !== $item['expires_on'] && $today > $item['expires_on'] ) {
			$state = 'expired';
		} elseif ( '' !== $item['starts_on'] && $today < $item['starts_on'] ) {
			$state = 'scheduled';
		} elseif ( $item['usage_limit'] > 0 && $item['used_count'] >= $item['usage_limit'] ) {
			$state = 'used_up';
		} else {
			$state = 'live';
		}

		return array(
			'id'                 => $item['id'],
			'code'               => $item['code'],
			'type'               => $item['type'],
			'value'              => $item['value'],
			'value_formatted'    => 'percent' === $item['type']
				? rtrim( rtrim( number_format( $item['value'] / 100, 2, '.', '' ), '0' ), '.' ) . '%'
				: $this->settings->format_money( $item['value'] ),
			'starts_on'          => $item['starts_on'],
			'expires_on'         => $item['expires_on'],
			'usage_limit'        => $item['usage_limit'],
			'per_customer_limit' => $item['per_customer_limit'],
			'used_count'         => $item['used_count'],
			'applies_to'         => $item['applies_to'],
			'status'             => $item['status'],
			'state'              => $state,
		);
	}
}