<?php

if (!defined('ABSPATH')) {
    exit;
}

class AdGhost_Ad_Block {

    const NAME = 'adghost/ad';

    private $shortcode;

    public function __construct(AdGhost_Shortcode_Handler $shortcode) {
        $this->shortcode = $shortcode;
    }

    public function init() {
        add_action('init', [$this, 'register']);
    }

    public function register() {
        if (!function_exists('register_block_type')) {
            return;
        }
        wp_register_script(
            'adghost-block',
            ADGHOST_PLUGIN_URL . 'assets/js/block.js',
            ['wp-blocks', 'wp-element', 'wp-components', 'wp-block-editor', 'wp-i18n'],
            ADGHOST_VERSION,
            true
        );
        wp_add_inline_script('adghost-block', 'window.adghostBlockUnits=' . wp_json_encode(self::units(), JSON_HEX_TAG | JSON_HEX_AMP) . ';', 'before');
        if (function_exists('wp_set_script_translations')) {
            wp_set_script_translations('adghost-block', 'adghost-lite');
        }

        register_block_type(self::NAME, [
            'api_version'     => 3,
            'title'           => __('AdGhost Ad', 'adghost-lite'),
            'category'        => 'widgets',
            'icon'            => 'megaphone',
            'editor_script'   => 'adghost-block',
            'attributes'      => [
                'unit' => ['type' => 'string', 'default' => ''],
            ],
            'supports'        => ['html' => false, 'reusable' => true],
            'render_callback' => [$this, 'render'],
        ]);
    }

    public static function units() {
        $out = [];
        foreach (AdGhost_Helper::units(true) as $unit) {
            $position = AdGhost_Helper::get_unit_position($unit);
            if (($unit['type'] ?? 'standard') !== 'standard' || $position === 'anchor'
                || in_array($position, AdGhost_Helper::screen_positions(), true)) {
                continue;
            }
            $code = AdGhost_Helper::gam_code($unit);
            if ($code === '') {
                continue;
            }
            $out[] = [
                'code'  => $code,
                'name'  => (string) ($unit['name'] ?? '') !== '' ? (string) $unit['name'] : $code,
                'sizes' => (string) ($unit['sizes'] ?? ''),
            ];
        }
        return $out;
    }

    public function render($attributes) {
        $code = AdGhost_Helper::sanitize_gam_code((string) ($attributes['unit'] ?? ''));
        if ($code === '') {
            return '';
        }
        return $this->shortcode->render_shortcode(['id' => $code]);
    }
}