<?php
declare( strict_types=1 );

namespace Dashbread\Rest;

/** The `dashbread/v1` namespace. Slice 2: the current member and their preferences. */
final class Routes {

	public const NS = 'dashbread/v1';

	public function register(): void {
		add_action( 'rest_api_init', array( $this, 'routes' ) );
	}

	/** The member routes act on the signed-in user's own data only. */
	public function is_signed_in(): bool {
		return is_user_logged_in();
	}

	public function routes(): void {
		register_rest_route( self::NS, '/notifications', array(
			'methods'             => 'GET',
			'permission_callback' => array( $this, 'is_signed_in' ),
			'callback'            => array( $this, 'notifications' ),
			'args'                => array( 'unread' => array( 'type' => 'boolean' ), 'page' => array( 'type' => 'integer' ), 'per_page' => array( 'type' => 'integer' ) ),
		) );
		register_rest_route( self::NS, '/notifications/read', array(
			'methods'             => 'POST',
			'permission_callback' => array( $this, 'is_signed_in' ),
			'callback'            => array( $this, 'read' ),
			'args'                => array( 'id' => array( 'type' => 'integer', 'required' => false ) ),
		) );
		register_rest_route( self::NS, '/me', array(
			'methods'             => 'GET',
			'permission_callback' => array( $this, 'is_signed_in' ),
			'callback'            => array( $this, 'me' ),
		) );
		register_rest_route( self::NS, '/me/widgets', array(
			'methods'             => 'POST',
			'permission_callback' => array( $this, 'is_signed_in' ),
			'callback'            => array( $this, 'widgets' ),
		) );
		register_rest_route( self::NS, '/me/preferences', array(
			'methods'             => 'POST',
			'permission_callback' => array( $this, 'is_signed_in' ),
			'callback'            => array( $this, 'preferences' ),
			'args'                => array(
				'mode'    => array( 'type' => 'string', 'enum' => array( 'light', 'dark', 'auto' ), 'required' => false ),
				'sidebar' => array( 'type' => 'string', 'enum' => array( 'expanded', 'collapsed' ), 'required' => false ),
			),
		) );
	}

	public function notifications( \WP_REST_Request $r ): \WP_REST_Response {
		$uid = get_current_user_id();
		return new \WP_REST_Response( array(
			'items'  => \Dashbread\Notifications\Store::list( $uid, (bool) $r->get_param( 'unread' ), max( 1, (int) $r->get_param( 'page' ) ), min( 50, max( 1, (int) ( $r->get_param( 'per_page' ) ?: 20 ) ) ) ),
			'unread' => \Dashbread\Notifications\Store::unread_count( $uid ),
		) );
	}

	public function read( \WP_REST_Request $r ): \WP_REST_Response {
		$uid = get_current_user_id();
		$id  = (int) $r->get_param( 'id' );
		if ( $id > 0 ) {
			\Dashbread\Notifications\Store::mark_read( $uid, $id );
		} else {
			\Dashbread\Notifications\Store::mark_all_read( $uid );
		}
		return new \WP_REST_Response( array( 'unread' => \Dashbread\Notifications\Store::unread_count( $uid ) ) );
	}

	public function me( \WP_REST_Request $r ): \WP_REST_Response {
		$u = wp_get_current_user();
		return new \WP_REST_Response( array(
			'id'          => $u->ID,
			'displayName' => $u->display_name,
			'email'       => $u->user_email,
			'roles'       => array_values( (array) $u->roles ),
			'isStaff'     => current_user_can( 'edit_posts' ),
			'mode'        => (string) ( get_user_meta( $u->ID, 'dashbread_mode', true ) ?: 'default' ),
			'sidebar'     => (string) ( get_user_meta( $u->ID, 'dashbread_sidebar', true ) ?: 'expanded' ),
		) );
	}

	/** Collapsed / hidden dashboard widgets for the current member. */
	public function widgets( \WP_REST_Request $r ): \WP_REST_Response {
		$in    = (array) $r->get_json_params();
		$clean = static fn( $v ) => array_values( array_unique( array_filter( array_map( 'sanitize_key', (array) $v ) ) ) );
		update_user_meta( get_current_user_id(), 'dashbread_widgets', array( 'collapsed' => $clean( $in['collapsed'] ?? array() ), 'hidden' => $clean( $in['hidden'] ?? array() ) ) );
		return new \WP_REST_Response( \Dashbread\Shell\Shell::widget_state() );
	}

	public function preferences( \WP_REST_Request $r ): \WP_REST_Response {
		$id = get_current_user_id();
		if ( null !== $r->get_param( 'mode' ) ) {
			update_user_meta( $id, 'dashbread_mode', sanitize_key( (string) $r->get_param( 'mode' ) ) );
		}
		if ( null !== $r->get_param( 'sidebar' ) ) {
			update_user_meta( $id, 'dashbread_sidebar', sanitize_key( (string) $r->get_param( 'sidebar' ) ) );
		}
		return $this->me( $r );
	}
}