<?php
/**
 * C-01 Website launch checklist.
 *
 * @package ForensixDigital
 */

declare(strict_types=1);

namespace ForensixDigital\Apps\Launch;

defined( 'ABSPATH' ) || exit;

use ForensixDigital\Apps\AppDefinition;
use ForensixDigital\Apps\AppInterface;
use ForensixDigital\Apps\SiteScan\SiteScanApp;
use ForensixDigital\Core\Plugin;
use ForensixDigital\Rest\Api;
use ForensixDigital\Services\Entitlements\Edition;
use ForensixDigital\Services\Findings\FindingStore;
use ForensixDigital\Services\Findings\Priority;
use ForensixDigital\Services\Permissions\Capabilities;

/**
 * A page that lists what a site should have before it goes live, and which of it is done. It
 * only reads: it changes nothing on the site and has no front-end output.
 */
final class LaunchApp implements AppInterface {

	public const ID = 'launch';

	/**
	 * Registry entry.
	 */
	public static function definition(): AppDefinition {
		return new AppDefinition(
			array(
				'id'                   => self::ID,
				'name'                 => __( 'Launch checklist', 'forensix-digital' ),
				'description'          => __( 'A list of what your site needs before it goes live, such as search visibility, https, a privacy page and a first scan. Shows what is done and where to fix the rest.', 'forensix-digital' ),
				'category'             => 'tools',
				'edition'              => Edition::FREE,
				'features'             => array(
					'C-01' => Edition::FREE,
				),
				'deactivation_effects' => array(
					__( 'The Launch checklist page is removed from the menu.', 'forensix-digital' ),
					__( 'Nothing on your site changes.', 'forensix-digital' ),
				),
				'factory'              => static fn(): self => new self(),
			)
		);
	}

	/**
	 * Hooks the app while it is active.
	 */
	public function register(): void {
		add_action( 'rest_api_init', array( $this, 'register_routes' ) );
		add_filter( 'forensix_admin_screens', array( $this, 'add_screen' ) );
	}

	/**
	 * Registers the checklist route.
	 */
	public function register_routes(): void {
		register_rest_route(
			Api::NAMESPACE,
			'/launch',
			array(
				'methods'             => 'GET',
				'callback'            => array( $this, 'show' ),
				'permission_callback' => static fn(): bool => current_user_can( Capabilities::VIEW_FINDINGS ),
			)
		);
	}

	/**
	 * Adds the page to the Forensix menu.
	 *
	 * @param array $screens Screens.
	 * @phpstan-param array<string, array{key: string, title: string, capability: string}> $screens
	 * @return array<string, array{key: string, title: string, capability: string}>
	 */
	public function add_screen( array $screens ): array {
		$screens['forensix-launch'] = array(
			'key'        => 'launch',
			'title'      => __( 'Launch checklist', 'forensix-digital' ),
			'capability' => Capabilities::VIEW_FINDINGS,
		);
		return $screens;
	}

	/**
	 * The checklist.
	 */
	public function show(): \WP_REST_Response {
		$store  = Plugin::container()->get( FindingStore::class );
		$latest = $store->latest_scan( SiteScanApp::ID );
		$open   = $store->open_by_severity();
		$items  = LaunchChecklist::items(
			LaunchChecklist::collect(
				null === $latest ? '' : (string) $latest['status'],
				$open[ Priority::CRITICAL ] + $open[ Priority::HIGH ]
			)
		);
		return new \WP_REST_Response(
			array(
				'items' => $items,
				'done'  => LaunchChecklist::done_count( $items ),
				'total' => count( $items ),
			)
		);
	}

	/**
	 * Nothing to set up.
	 */
	public function activate(): void {}

	/**
	 * Removes the hooks.
	 */
	public function deactivate(): void {
		remove_action( 'rest_api_init', array( $this, 'register_routes' ) );
		remove_filter( 'forensix_admin_screens', array( $this, 'add_screen' ) );
	}

	/**
	 * Stores nothing.
	 */
	public function delete_data(): void {}
}