<?php

namespace app\action;

use Exception;
use libs\db\Db;

/**
 * 设备上传状态接口
 * Class SetDeviceStatus
 * @package app\action
 */
class SetDeviceStatus
{
    public function execute($post)
    {
        // 验证数据
        $param = check_valid($post['action'], [
            ['device_code', 'string', '设备编码'],
            ['status', 'string', '设备编码'],
        ], $post['param']);


        if($param['status'] == "IDLE" || $param['status'] == "RUN" || $param['status'] == "FINISH" ||
        $param['status'] == "TROUBLE" || $param['status'] == "PAUSE" || $param['status'] == "OFFLINE"){
            if  ($param['status'] == "TROUBLE" && empty($param['errcode'])) {
                throw new Exception("请上传异常errcode.", 4001);
            }
            $errcode = isset($param['errcode'])&&!empty($param['errcode'])?$param['errcode']:null;
            $sql = "SELECT id,status,device_category_id FROM hf_mes_device WHERE code='".$param['device_code']."'  LIMIT 1;";
            $ret_device = Db::fetch($sql);
            if(!is_null($ret_device)){
                //含有这个device
                list($status,$device_category_id) = [$ret_device['status'],$ret_device['device_category_id']];
                
                // 通过这个设备去查找device_log状态
                $sql = "SELECT id,status,errcode FROM hf_mes_device_log WHERE device_code='".$param['device_code']."' ORDER BY create_time desc  LIMIT 1;";
                $ret_device_log = Db::fetch($sql);

                if (!is_null($ret_device_log)) { // 如果状态不为空，则有最新状态
                    if ($status != $param['status'] || ($status == $param['status'] && !empty($param['errcode']) && !empty($ret_device_log['errcode']) && $ret_device_log['errcode'] != $param['errcode'])) { // 如果状态不一致 或者 处于异常状态，但是errcode 不一致
                        $sql = "UPDATE hf_mes_device_log SET release_time=CURRENT_TIMESTAMP(0),duration=EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP(0) - create_time)) WHERE id = {$ret_device_log['id']} ;";
                        $ret = Db::query($sql);
                        $this->insert_device_log($param,$ret_device);
                    }
                    
                } else { // 如果device_log为空，则插入
                    $this->insert_device_log($param,$ret_device);
                }

            }else{
                //未发现这个device
                throw new Exception("设备编码 ".$param['device_code']." 不存在.", 4001);
            }

            if(!empty($param['errcode'])){
                $sql = "UPDATE hf_mes_device SET msg='".$param['msg']."', errcode='".$errcode."', status='".$param['status']."', last_heartbeat_time=CURRENT_TIMESTAMP(0) 
                                WHERE code='".$param['device_code']."';";
            }else{
                $sql = "UPDATE hf_mes_device SET status='".$param['status']."',  last_heartbeat_time=CURRENT_TIMESTAMP(0)
                                WHERE code='".$param['device_code']."';";
            }
            $ret = Db::query($sql);

            if(is_null($ret)){
                throw new Exception("设备编码 ".$param['device_code']." 更新状态失败.", 4001);
            }

        }else{
            throw new Exception("MES不受理该状态[{$param['status']}]", 4002);
        }
        

        return '';
    }

    /**
     * 插入device_log接口
     */
    private function insert_device_log($param,$ret_device)
    {
        if(!empty($param['errcode']) && $param['status'] == "TROUBLE" ){   // 如果状态是故障，则插入故障信息
            $val = "('{$param['device_code']}','{$param['status']}','{$param['msg']}','{$param['errcode']}',CURRENT_TIMESTAMP(0),{$ret_device['device_category_id']})";
            $sql = "INSERT INTO hf_mes_device_log (device_code, status, msg, errcode,create_time,device_category_id) VALUES " . $val;
        }else{
            $val = "('{$param['device_code']}', '{$param['status']}',CURRENT_TIMESTAMP(0),{$ret_device['device_category_id']})";
            $sql = "INSERT INTO hf_mes_device_log (device_code, status,create_time,device_category_id) VALUES " . $val;
        }
        $ret_insert_device_log = Db::query($sql);
        if(is_null($ret_insert_device_log)){
            throw new Exception("设备编码 ".$param['device_code']." 插入设备状态履历失败.", 4001);
        }

    }
}