<?php
/**
 * @package ogre-consent
 * @author cleverogre
 * @copyright 2026 CleverOgre
 * @license GLP-3.0-or-later
 * @version 0.0.0
 * @since 0.0.0
 */

namespace Ogre\Consent;

use Override;
use Ogre\Singleton;
use WP_Block;
use WP_HTML_Tag_Processor;

defined('ABSPATH') || exit;

abstract class Service {
    use Singleton;

    protected string $name;
    protected bool $contextualConsentOnly = false;
    
    protected function __construct(string $name) {
        $this->name = $name;
        Services::instance()->register($this);
    }

    public function get_config(): array
    {
        $config = [
            'name' => $this->name,
            'purposes' => $this->get_purposes(),
        ];
        if ($this->contextualConsentOnly) $config['contextualConsentOnly'] = true;
        return $config;
    }

    public function get_purposes(): array
    {
        return [
            'marketing'
        ];
    }

}

abstract class ScriptService extends Service {
    protected string $handle;
    
    protected function __construct(string $handle, string $name = '') {
        $this->handle = $handle;
        parent::__construct($name ?? $handle);
        add_filter('script_loader_tag', [$this, 'script_loader_tag'], 10, 3);
    }

    public function script_loader_tag(string $tag, string $handle, string $src): string
    {
        if ($handle !== $this->handle) return $tag;
        $tags = new WP_HTML_Tag_Processor($tag);
        if ($tags->next_tag('script')) {
            $tags->set_attribute('type', 'text/plain');
            $tags->set_attribute('data-name', $this->name);
            if (!str_starts_with(($src = $tags->get_attribute('src')), site_url())) {
                $tags->remove_attribute('src');
                $tags->set_attribute('data-src', $src);
            }
        }
        return $tag;
    }

}

abstract class BlockService extends Service {

    protected string $blockName;

    protected function __construct(string $blockName, string $name = '') {
        $this->blockName = $blockName;
        parent::__construct($name ?? $blockName);
        add_filter("render_block_{$blockName}", [$this, 'render_block'], 10, 3);
    }

    abstract public function render_block(string $block_content, array $block, WP_Block $instance): string;

}

abstract class GoogleTagManagerService extends ScriptService {

    protected string $consent_id;
    
    protected function __construct(string $handle, string $name = '', string $consent_id = '') {
        $this->consent_id = $consent_id ?? ($name ?? $handle);
        parent::__construct($handle, $name);
    }

    #[Override]
    public function get_config(): array
    {
        return array_merge(
            parent::get_config(),
            [
                'cookies' => [
                    '/^_ga(_.*)?/'
                ],
                'onAccept' => sprintf(
                    "gtag('consent', 'update', {'%s': 'granted'})",
                    esc_js($this->consent_id)
                ),
                'onDecline' => sprintf(
                    "gtag('consent', 'update', {'%s': 'denied'})",
                    esc_js($this->consent_id)
                ),
            ]
        );
    }

}