<?php
/**
 * User agent detector.
 */

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

class AICRG_Detector {

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

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

    public function detect( string $user_agent ): array {
        $ua = trim( (string) $user_agent );

        if ( '' === $ua ) {
            return [ 'is_bot' => false ];
        }

        foreach ( $this->rules_provider->get_all_rules() as $rule ) {
            if ( empty( $rule['pattern'] ) ) {
                continue;
            }

            if ( false !== stripos( $ua, $rule['pattern'] ) ) {
                return [
                    'is_bot'   => true,
                    'bot_slug' => $rule['slug'],
                    'bot_name' => $rule['name'] ?? $rule['slug'],
                ];
            }
        }

        return [ 'is_bot' => false ];
    }
}