<?php

namespace refill\event;

trait crash
{
    private function can_submit($card_no)
    {
        if(empty($this->mChannels)) {
            return true;
        }

        $val = $this->read($card_no);
        if($val === false) {
            return true;
        }

        //目标是最佳解决撞单问题，唯一有效办法是睡眠.
        $osc = $val['sc']; //old succ channel
        $ost = $val['st']; //old succ time
        //如果有充值中的相同卡号的单子，则睡眠.
        if(!empty($val['cc'])) {
            return false;
        }

        //成功的通道是撞单通道，并且成功时间还没过期,则睡眠
        $now = time();
        if (in_array($osc, $this->mChannels) and ($ost + $this->mSuccInterval >= $now)) {
            return false;
        }

        return true;
    }

    private function submit($card_no, $oid)
    {
        if(empty($this->mChannels)) {
            return;
        }

        $org_val = [
            'sc' => '', //succ ch_name
            'st' => 0,  //succ time
            'cc' => []  //正在提交的通道
        ];

        $val = $this->read($card_no);
        if($val === false) {
            $val = $org_val;
        }

        $val['cc'][$oid] = '';
        $this->write($card_no,$val);
    }

    private function can_commit($card_no, $oid, $ch_name)
    {
        if(empty($this->mChannels)) {
            return true;
        }

        //非撞单通道都可以提
        if(!in_array($ch_name,$this->mChannels)) {
            return true;
        }

        $val = $this->read($card_no);
        if($val === false) {
            return true;
        }

        $ost = $val['st']; //old succ time
        $now = time();
        if($ost + $this->mSuccInterval >= $now) {
            return false;
        }

        $commits = count($val['cc']);
        if($commits > 1) {
            return false;
        }

        return true;
    }

    private function commit($card_no, $oid, $ch_name)
    {
        if(empty($this->mChannels)) {
            return;
        }

        $val = $this->read($card_no);
        if($val === false) {
            return;
        }

        $val['cc'][$oid] = $ch_name;
        $this->write($card_no,$val);
    }

    private function notify($card_no, $oid, $ch_name,$succ)
    {
        if(empty($this->mChannels)) {
            return;
        }

        $val = $this->read($card_no);
        if($val === false) {
            return;
        }

        if(!$succ) {
            $val['cc'][$oid] = '';
            $this->write($card_no,$val);
        } else {
            $val['cc'][$oid] = $ch_name;
            $this->write($card_no,$val);
        }
    }

    private function complete($card_no, $oid, $ch_name,$succ)
    {
        if(empty($this->mChannels)) {
            return;
        }

        $val = $this->read($card_no);
        if($val === false) {
            return;
        }

        unset($val['cc'][$oid]);
        if($succ)
        {
            $now = time();
            if(empty($val['sc'])) {
                $val['sc'] = $ch_name;
                $val['st'] = $now;
            }
            else
            {
                $osc = $val['sc']; //old succ channel
                $ost = $val['st']; //old succ time

                if(in_array($osc,$this->mChannels))
                {
                    //过去的成功通道，在撞单通道中。
                    //如果新的通道也在撞单通道中，或者老的成功时间过了撞单周期
                    //更新成功通道信息
                    if (in_array($ch_name, $this->mChannels) or ($ost + $this->mSuccInterval < $now)) {
                        $val['sc'] = $ch_name;
                        $val['st'] = $now;
                    }
                }
                else
                {
                    $val['sc'] = $ch_name;
                    $val['st'] = $now;
                }
            }
        }

        $this->write($card_no,$val);
    }

    private function write($card_no, $val)
    {
        $data = [$card_no => json_encode($val)];
        wcache(card_crash::cache_name, $data, 'refill-');
    }

    private function read($card_no)
    {
        $ret = rcache(card_crash::cache_name, 'refill-', $card_no);
        if (empty($ret)) {
            return false;
        }

        $values = $ret[$card_no];
        return json_decode($values, true);
    }
    private function delete($card_no)
    {
        dcache(card_crash::cache_name, 'refill-', $card_no);
    }
}