<?php

namespace App\Utils\API;

use app\model\Facebookconf;
use app\model\Recommend;
use FacebookAds\Api;
use FacebookAds\Logger\CurlLogger;
use FacebookAds\Object\ServerSide\CustomData;
use FacebookAds\Object\ServerSide\Event;
use FacebookAds\Object\ServerSide\EventRequest;
use FacebookAds\Object\ServerSide\UserData;
use Exception;

/**
 * Facebook API 事件处理
 */
class Facebook
{
    /**
     * 初始化 Facebook API
     * @param string $access_token
     */
    private static function initFacebookApi(string $access_token): void
    {
        Api::init(null, null, $access_token);
        Api::instance()->setLogger(new CurlLogger());
    }

    /**
     * 发送 Facebook 事件
     * @param string $event_name 事件名称 (PageView / CompleteRegistration)
     * @param string $access_token
     * @param string $pixel_id
     */
    private static function sendEvent(string $event_name, string $access_token, string $pixel_id): void
    {
        try {
            self::initFacebookApi($access_token);

            $event = (new Event())
                ->setEventName($event_name)
                ->setEventTime(time())
                ->setUserData(new UserData()) // 可以扩展用户数据
                ->setCustomData(new CustomData()) // 可以扩展自定义数据
                ->setActionSource("website");

            (new EventRequest($pixel_id))
                ->setEvents([$event])
                ->execute();
        } catch (Exception $e) {
            error_log("Facebook API Error: " . $e->getMessage());
        }
    }

    /**
     * 触发 PageView 事件
     * @param string $access_token
     * @param string $pixel_id
     */
    public static function PageView(string $access_token, string $pixel_id): void
    {
        self::sendEvent("PageView", $access_token, $pixel_id);
    }

    /**
     * 触发 CompleteRegistration 事件
     * @param string $access_token
     * @param string $pixel_id
     */
    public static function CompleteRegistration(string $access_token, string $pixel_id): void
    {
        self::sendEvent("CompleteRegistration", $access_token, $pixel_id);
    }

    /**
     * 处理 Facebook 事件
     * @param int $type 事件类型 (1 = PageView, 2 = CompleteRegistration)
     * @param string $invite_code 邀请码
     */
    public static function handleEvent(int $type, string $invite_code): void
    {
        $recommend = Recommend::where('invite_code', $invite_code)->first();

        if ($recommend) {
            $facebookConf = Facebookconf::where('promotionid', $recommend->id)->first();
            if ($facebookConf) {
                $access_token = $facebookConf->access_token;
                $pixel_id = $facebookConf->pixel_id;

                match ($type) {
                    1 => self::PageView($access_token, $pixel_id),
                    2 => self::CompleteRegistration($access_token, $pixel_id),
                    default => error_log("Invalid event type: " . $type),
                };
            }
        }
    }
}