<?php

declare(strict_types=1);

namespace app\api\controller;

use app\BaseController;
use app\common\service\qywx\QywxPromotionOpenWorkService;
use app\common\service\qywx\QywxPromotionRedirectService;
use think\facade\Log;

/** 企业微信推广公开端点：服务商回调、授权回跳、JS 与随机跳转。 */
class QywxPromotionPublicController extends BaseController
{
    public function script(string $key)
    {
        if (!QywxPromotionRedirectService::poolExists($key)) {
            return response('/* promotion pool not found */', 404, ['Content-Type' => 'application/javascript; charset=utf-8']);
        }
        $goUrl = rtrim($this->request->domain(), '/') . '/api/qywx-promotion/go/' . $key;
        $jsonKey = json_encode($key, JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR);
        $jsonGo = json_encode($goUrl, JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR);
        $javascript = <<<JS
(function(w,d){
  'use strict';
  var key={$jsonKey}, go={$jsonGo};
  function openPromotion(){
    var source=w.location.href;
    w.location.assign(go+'?from='+encodeURIComponent(source));
  }
  d.addEventListener('click',function(event){
    var node=event.target&&event.target.closest?event.target.closest('[data-wecom-promotion="'+key+'"],.wecom-promotion-link[data-pool="'+key+'"]'):null;
    if(!node){return;}
    event.preventDefault();
    event.stopPropagation();
    openPromotion();
  },true);
  w.WecomPromotion=w.WecomPromotion||{};
  w.WecomPromotion[key]={open:openPromotion};
})(window,document);
JS;

        return response($javascript, 200, [
            'Content-Type' => 'application/javascript; charset=utf-8',
            'Cache-Control' => 'public, max-age=60',
            'X-Content-Type-Options' => 'nosniff',
        ]);
    }

    public function redirect(string $key)
    {
        $picked = QywxPromotionRedirectService::pick($key, [
            'source_url' => (string) $this->request->get('from', ''),
            'referer' => (string) $this->request->header('referer', ''),
            'user_agent' => (string) $this->request->header('user-agent', ''),
            'ip' => (string) $this->request->ip(),
        ]);
        if (!$picked) {
            return response('当前暂无可用的企业微信推广链接，请稍后再试。', 503, [
                'Content-Type' => 'text/plain; charset=utf-8',
                'Cache-Control' => 'no-store',
            ]);
        }

        return redirect($picked['url'], 302)->header([
            'Cache-Control' => 'no-store',
            'Referrer-Policy' => 'no-referrer',
        ]);
    }

    public function providerCallback()
    {
        try {
            $psr = QywxPromotionOpenWorkService::serveProviderCallback();
            $body = $psr->getBody();
            $body->rewind();
            $headers = [];
            if ($psr->getHeaderLine('Content-Type') !== '') {
                $headers['Content-Type'] = $psr->getHeaderLine('Content-Type');
            }

            return response($body->getContents(), $psr->getStatusCode(), $headers);
        } catch (\Throwable $e) {
            Log::error('企微推广服务商回调失败：' . $e->getMessage(), ['exception' => $e]);

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

    public function authCallback()
    {
        $fallback = rtrim($this->request->domain(), '/') . '/admin/first_visit/wecom_promotion';
        $returnUrl = QywxPromotionOpenWorkService::configuredAdminReturnUrl($fallback);
        try {
            $result = QywxPromotionOpenWorkService::consumeAuthorizationCallback(
                trim((string) $this->request->get('auth_code', '')),
                trim((string) $this->request->get('state', ''))
            );
            $query = ['wecom_auth' => 'success', 'account_id' => (int) $result['id']];
        } catch (\Throwable $e) {
            Log::error('企微推广授权回跳失败：' . $e->getMessage(), ['exception' => $e]);
            $query = ['wecom_auth' => 'failed', 'message' => mb_substr($e->getMessage(), 0, 160)];
        }

        return redirect($returnUrl . (str_contains($returnUrl, '?') ? '&' : '?') . http_build_query($query), 302);
    }
}