<?php

declare(strict_types=1);

namespace app\api\controller;

use app\adminapi\logic\qywx\CustomerLogic;
use EasyWeChat\Kernel\Exceptions\BadRequestException;
use EasyWeChat\Work\Application;
use EasyWeChat\Work\Message;
use think\facade\Log;

/**
 * 企业微信「客户联系」事件回调（接收事件服务器）
 *
 * @see https://developer.work.weixin.qq.com/document/path/92130
 */
class QywxExternalContactCallbackController extends BaseApiController
{
    /** 免登录：企微服务器回调 */
    public array $notNeedLogin = ['notify'];

    public function notify()
    {
        $corpId = (string) config('pay.wechat_work.corp_id', '');
        $secret = (string) config('pay.wechat_work.external_pay_secret', '');
        $token = (string) config('pay.wechat_work.contact_callback_token', '');
        $aesKey = (string) config('pay.wechat_work.contact_callback_aes_key', '');

        if ($corpId === '' || $secret === '' || $token === '' || $aesKey === '') {
            Log::error('qywx external contact callback: 缺少配置 corp_id / external_pay_secret / contact_callback_token / contact_callback_aes_key');

            return response('config error', 503, ['Content-Type' => 'text/plain; charset=utf-8']);
        }

        try {
            $app = new Application([
                'corp_id' => $corpId,
                'secret' => $secret,
                'token' => $token,
                'aes_key' => $aesKey,
            ]);
            $server = $app->getServer();

            $server->addEventListener('change_external_contact', function (Message $message, \Closure $next) {
                try {
                    $this->handleChangeExternalContact($message);
                } catch (\Throwable $e) {
                    Log::error('qywx external contact callback: ' . $e->getMessage(), [
                        'exception' => $e,
                    ]);
                }

                return $next($message);
            });

            $psr = $server->serve();
            $body = $psr->getBody();
            $body->rewind();
            $content = $body->getContents();

            $headers = [];
            $contentType = $psr->getHeaderLine('Content-Type');
            if ($contentType !== '') {
                $headers['Content-Type'] = $contentType;
            }

            return response($content, 200, $headers);
        } catch (BadRequestException $e) {
            Log::warning('qywx external contact callback: bad request ' . $e->getMessage());

            return response('bad request', 400, ['Content-Type' => 'text/plain; charset=utf-8']);
        } catch (\Throwable $e) {
            Log::error('qywx external contact callback: serve failed ' . $e->getMessage(), ['exception' => $e]);

            return response('error', 500, ['Content-Type' => 'text/plain; charset=utf-8']);
        }
    }

    /**
     * @param Message $message
     */
    private function handleChangeExternalContact($message): void
    {
        $changeType = (string) ($message['ChangeType'] ?? '');
        $extId = trim((string) ($message['ExternalUserID'] ?? $message['ExternalUserId'] ?? ''));

        if ($extId === '') {
            Log::info('qywx external contact callback: 无 ExternalUserID', ['ChangeType' => $changeType]);

            return;
        }

        Log::info('qywx external contact callback', ['ChangeType' => $changeType, 'ExternalUserID' => $extId]);

        if ($changeType === 'del_external_contact') {
            CustomerLogic::softDeleteExternalContactRow($extId);

            return;
        }

        // 其余变更（添加/编辑/删跟进人等）：以 get 详情为准 UPSERT，避免遗漏未枚举的 ChangeType
        CustomerLogic::upsertSingleExternalContactFromApi($extId);
    }
}