<?php
namespace Zadex\Dynamic\Tags;

defined('ABSPATH') || exit;

use Zadex\Dynamic\Context;
use Zadex\Dynamic\Tag;

/** A field of the logged-in visitor (empty for guests). Pages using it should not be page-cached. */
final class UserInfo extends Tag
{
    public const FIELDS = ['display_name', 'first_name', 'last_name', 'nickname', 'user_email', 'user_login', 'description', 'ID', 'avatar'];

    public function name(): string
    {
        return 'user-info';
    }

    public function title(): string
    {
        return __('User info', 'zadex');
    }

    public function group(): string
    {
        return 'user';
    }

    public function categories(): array
    {
        return ['text', 'image'];
    }

    public function controls(): array
    {
        return [
            ['id' => 'field', 'type' => 'select', 'label' => __('Field', 'zadex'), 'default' => 'display_name', 'options' => [
                ['value' => 'display_name', 'label' => __('Display name', 'zadex')],
                ['value' => 'first_name', 'label' => __('First name', 'zadex')],
                ['value' => 'last_name', 'label' => __('Last name', 'zadex')],
                ['value' => 'nickname', 'label' => __('Nickname', 'zadex')],
                ['value' => 'user_email', 'label' => __('Email', 'zadex')],
                ['value' => 'user_login', 'label' => __('Username', 'zadex')],
                ['value' => 'description', 'label' => __('Biography', 'zadex')],
                ['value' => 'ID', 'label' => __('User ID', 'zadex')],
                ['value' => 'avatar', 'label' => __('Avatar', 'zadex')],
            ]],
        ];
    }

    public function render(array $settings, Context $ctx)
    {
        if ($ctx->user_id <= 0) {
            return '';
        }
        $field = in_array($settings['field'] ?? 'display_name', self::FIELDS, true) ? $settings['field'] : 'display_name';
        if ($field === 'ID') {
            return $ctx->user_id;
        }
        if ($field === 'avatar') {
            return ['id' => 0, 'url' => (string) get_avatar_url($ctx->user_id, ['size' => 192]), 'alt' => ''];
        }
        return (string) get_the_author_meta($field, $ctx->user_id);
    }
}