<?php

declare (strict_types = 1);
namespace DigitalBrew\Featherdash\Modules\Admin;

use DigitalBrew\Featherdash\Licensing\Pro;
use DigitalBrew\Featherdash\Settings\Settings;
use WP_User_Query;
final class Tables {
    private Settings $settings;

    public function register( Settings $settings ) : void {
        $this->settings = $settings;
        $this->users();
    }

    private function users() : void {
        $add = (array) $this->settings->get( 'tables.users.add', [] );
        $remove = (array) $this->settings->get( 'tables.users.remove', [] );
        if ( $add === [] && $remove === [] ) {
            return;
        }
        add_filter( 'manage_users_columns', function ( array $columns ) use($add, $remove) : array {
            foreach ( $remove as $column ) {
                unset($columns[$column]);
            }
            foreach ( $add as $column ) {
                if ( $column === 'registration_date' ) {
                    $columns['registration_date'] = __( 'Registration date', 'featherdash' );
                }
                if ( $column === 'last_login' ) {
                    $columns['last_login'] = __( 'Last login', 'featherdash' );
                }
            }
            return $columns;
        } );
        add_filter(
            'manage_users_custom_column',
            [$this, 'renderUserColumn'],
            10,
            3
        );
        add_filter( 'manage_users_sortable_columns', function ( array $columns ) use($add) : array {
            if ( in_array( 'registration_date', $add, true ) ) {
                $columns['registration_date'] = 'registered';
            }
            if ( in_array( 'last_login', $add, true ) ) {
                $columns['last_login'] = 'last_login';
            }
            return $columns;
        } );
        if ( in_array( 'last_login', $add, true ) ) {
            add_action( 'pre_get_users', [$this, 'orderUsersByLastLogin'] );
        }
    }

    /**
     * @param mixed $output
     * @param mixed $column
     * @param mixed $userId
     */
    public function renderUserColumn( $output, $column, $userId ) : string {
        $column = (string) $column;
        $userId = (int) $userId;
        $format = $this->dateTimeFormat();
        if ( $column === 'registration_date' ) {
            $user = ( $userId > 0 ? get_userdata( $userId ) : false );
            if ( $user === false ) {
                return '&mdash;';
            }
            $timestamp = strtotime( (string) $user->user_registered );
            return ( $timestamp === false ? '&mdash;' : wp_date( $format, $timestamp ) );
        }
        if ( $column === 'last_login' ) {
            $lastLogin = get_user_meta( $userId, 'last_login', true );
            if ( !is_string( $lastLogin ) || $lastLogin === '' ) {
                return '&mdash;';
            }
            $timestamp = strtotime( $lastLogin . ' UTC' );
            return ( $timestamp === false ? '&mdash;' : wp_date( $format, $timestamp ) );
        }
        return ( is_string( $output ) ? $output : '' );
    }

    public function orderUsersByLastLogin( WP_User_Query $query ) : void {
        if ( !function_exists( 'get_current_screen' ) ) {
            return;
        }
        $screen = get_current_screen();
        if ( $screen === null || $screen->id !== 'users' ) {
            return;
        }
        if ( $query->get( 'orderby' ) !== 'last_login' ) {
            return;
        }
        $order = strtoupper( (string) $query->get( 'order' ) );
        if ( !in_array( $order, ['ASC', 'DESC'], true ) ) {
            $order = 'ASC';
        }
        $query->set( 'meta_query', [
            'relation'               => 'OR',
            'featherdash_last_login' => [
                'key'     => 'last_login',
                'compare' => 'EXISTS',
            ],
            [
                'key'     => 'last_login',
                'compare' => 'NOT EXISTS',
            ],
        ] );
        $query->set( 'orderby', 'featherdash_last_login' );
        $query->set( 'order', $order );
    }

    private function dateTimeFormat() : string {
        return (string) get_option( 'date_format' ) . ' ' . (string) get_option( 'time_format' );
    }

}