<?php


namespace app\common\command;


use app\common\model\FlowLogs;
use app\common\model\User;
use think\console\Command;
use think\console\Input;
use think\console\Output;
use think\Db;
use think\Exception;

class SettlementTraffic extends Command
{
    protected function configure()
    {
//        parent::configure(); // TODO: Change the autogenerated stub
        $this->setName('settlement')->setDescription('后台统计用户流量使用, 并扣除相关流量');
    }

    protected function execute(Input $input, Output $output)
    {
//        parent::execute($input, $output); // TODO: Change the autogenerated stub
//        $output->writeln("TestCommand");

        $dateTime = time() - 5; // 设置处理数据的时间为当前时间的前5秒，避免数据竞争

        // 分组统计出指定时间内用户使用了的流量
        $data = FlowLogs::where('created_at', '<=', $dateTime)
            ->field('username, sum(bytes) as bytes')
            ->group('username')
            ->select()->toArray();

        // 当前数据所有用户名的数组
        $userNames = array_column($data, 'username');
        $users = collection(User::whereIn('username', $userNames)->field('id, username')->select())->toArray();
        $userNameMapId = array_column($users, 'id', 'username');
        Db::startTrans();
        try {
            foreach ($data as $datum) {
                if (!$this->usedTraffic($userNameMapId[$datum['username']], $datum['bytes'])) {
                    throw new Exception('统计用户使用流量失败');
                }
            }
            // 指定时间段的流量已统计，删除相关记录
            FlowLogs::where('created_at', '<=', $dateTime)->delete();
            // 统计数据成功，提交事物
            Db::commit();
        } catch (Exception $e) {            // 操作失败，数据库信息回滚
            Db::rollback();
        }
    }

    protected function usedTraffic($uid, $bytes)
    {

    }
}