<?php

namespace App\Http\Controllers\Wap\User;

use App\Modules\Book\Services\BookConfigService;
use App\Modules\User\Models\User;
use App\Modules\User\Services\ReadRecordService;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Hashids;
use EasyWeChat\Foundation\Application;
use Log;

/**
 * 朋友圈链接
 * Class CoflController
 * @package App\Http\Controllers\Wap\User
 */
class CoflController extends Controller
{
    public function index(Request $request){
        Log::info('index param is');
        Log::info($request->all());
        $bid = $request->get('bid');
        if(empty($bid)){
            $default_ink = $this->getLink();
            return redirect()->to($default_ink);
        }
        $openid = $request->get('openid');
        //授权
        $params = $request->except('_url');
        if(empty($openid)){
            $url = str_replace('http://', env('PROTOCOL') . '://', url()->current() . '?' . http_build_query($params));
            $params['redirect_url'] = urlencode($url);
            $app = new Application($this->auth($params));
            return $app->oauth->redirect();
        }
        $bid = Hashids::decode($bid)[0];
        //获取用户
        $user = $this->getUsers($openid);
        if(!$user[0]){
            //用户不存在
            return redirect()->to($this->getLink());
        }

        //有阅读纪录的跳转
        $read_record = ReadRecordService::getByField($user[0],$bid);
        if($read_record){
            $cid = explode('_',$read_record)[0];
        }else{
            //没有阅读记录的跳转
            $book_info = BookConfigService::getBookById($bid);
            $cid = $book_info->first_cid;
        }
        $params['cid'] = $cid;
        $url = $this->getLink($user[1]).'/reader?'.http_build_query($params);
        return redirect()->to($url);
    }

    private function getUsers($openid){
        $users = User::where('openid',$openid)->select('id','distribution_channel_id')->get();
        Log::info('$openid is: '.$openid);
        Log::info('$users is: ');
        Log::info($users);
        if($users->isEmpty()) return [0,0];
        $temp = null;
        $distribution_channel_id = 0;
        $uid = 0;
        foreach ($users as $user){
            $last_read = ReadRecordService::getByField($user->id,'last_read');
            Log::info('foreach ($users as $user)');
            Log::info('$user');
            Log::info($user);
            Log::info('$last_read is');
            Log::info($last_read);
            if(!$last_read) continue;
            if(!$temp ){
                $distribution_channel_id = $user->distribution_channel_id;
                $uid  = $user->id;
                $temp = $last_read;
            }else{
                $temp_last_read_info = explode('_',$temp);
                $last_read_info = explode('_',$last_read);
                if($last_read_info[2] > $temp_last_read_info[2]){
                    $uid = $user->id;
                    $distribution_channel_id = $user->distribution_channel_id;
                    $temp = $last_read;
                }
            }
        }
        if($temp) [$uid,$distribution_channel_id];
        return [0,0];
    }

    private function getLink($distribution_channel_id=123){
        $url_format = '%s://site%s.%s.com/';
        return  sprintf(
            $url_format,
            env('PROTOCOL'),
            encodeDistributionChannelId($distribution_channel_id),
            env('CUSTOM_HOST')
        );
    }


    private function auth($param){
        $param['appid'] = 'wx9d389a73b88bbeae';
        $options = [
            'app_id' => 'wx9d389a73b88bbeae',
            'secret' => '2f6594bb595dfa256b5512e43a32a3d3',
            'oauth' => [
                'scopes' => ['snsapi_base'],
                'callback' => env('AUTH_CALLBACK_URL') . '?' . http_build_query($param),
            ],
        ];
        return $options;
    }

}