<?php
/**
 * Policy engine.
 */

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

class AICRG_Policy {

    /** @var AICRG_Crawler_Registry */
    private $registry;

    /** @var AICRG_Rules_Provider */
    private $rules_provider;

    public function __construct( AICRG_Crawler_Registry $registry, AICRG_Rules_Provider $rules_provider ) {
        $this->registry       = $registry;
        $this->rules_provider = $rules_provider;
    }

    public function decide( string $bot_slug ): string {
        $settings   = aicrg_get_settings();
        $block_mode = $settings['block_mode'] ?? 'block_known_ai';

        if ( 'allow_all' === $block_mode ) {
            return 'allow';
        }

        $status = $this->registry->get_status( $bot_slug );

        if ( 'trusted' === $status ) {
            return 'allow';
        }

        if ( 'blocked' === $status ) {
            return 'block';
        }

        $rule_info = $this->rules_provider->get_category_info( $bot_slug );
        if ( 'trusted' === ( $rule_info['default_status'] ?? 'unknown' ) ) {
            return 'allow';
        }

        if ( 'block_known_ai' === $block_mode ) {
            return 'block';
        }

        return 'allow';
    }
}