package service

import (
	"sparrow/pkg/rpcs"
	"sparrow/pkg/server"
	"time"
)

type Action struct {
	DeviceID         string                `json:"device_id"`         // 设备ID
	SubDeviceId      string                `json:"sub_device_id"`     // 实体子设备Id,如果需要
	ActionExecutor   string                `json:"action_executor"`   // 动作对象类型
	ExecutorProperty *TaskExecutorProperty `json:"executor_property"` // 动作执行明细
	PlcPubMessage    *PlcPubMessage        `json:"plc_pub_message"`   // PLC消息
}

// TaskExecutorProperty 定时任务执行动作执行参数
type TaskExecutorProperty struct {
	/*
		指令 code。当 action_executor 是 device_issue 或 device_group_issue 时，此参数必填。
	*/
	FunctionCode string `json:"function_code"`
	/*
		指令 value。当 action_executor 是 device_issue 或 device_group_issue 时，此参数必填。
	*/
	FunctionValue map[string]interface{} `json:"function_value"`
	/*
		延时时间。当 action_executor 是 delay 时，此参数必填。
	*/
	DelaySeconds int64 `json:"delay_seconds"`
}

type PlcPubMessage struct {
	Topic   string `json:"topic"`
	Payload []byte `json:"payload"`
}

// TaskExecutor 任务执行器，用来执行具体的任务动作
type TaskExecutor struct {
	Actions []*Action
}

func NewTaskExecutor(actions []*Action) *TaskExecutor {
	return &TaskExecutor{
		Actions: actions,
	}
}

func (a *TaskExecutor) Do() error {
	for _, action := range a.Actions {
		if err := a.doTask(action); err != nil {
			return err
		}
	}
	return nil
}

func (a *TaskExecutor) doTask(action *Action) error {
	// 调用设备接入服务
	rpchost, err := getAccessRPCHost(action.DeviceID)
	if err != nil {
		return err
	}
	reply := &rpcs.ReplyEmptyResult{}
	if rpchost != "" {
		args := rpcs.ArgsSendCommand{
			DeviceId:  action.DeviceID,
			SubDevice: action.SubDeviceId,
			Cmd:       action.ExecutorProperty.FunctionCode,
			Params:    action.ExecutorProperty.FunctionValue,
		}
		server.Log.Debugf("do Device Issue task args:%v", args)
		return server.RPCCallByHost(rpchost, "Access.SendCommand", args, reply)
	}

	var publishArgs rpcs.ArgsPublishMessage
	publishArgs.Topic = action.PlcPubMessage.Topic
	publishArgs.Payload = action.PlcPubMessage.Payload
	err = server.RPCCallByName(nil, rpcs.EmqxAgentServiceName, "Access.PublishMessage", publishArgs, reply)
	if err != nil {
		server.Log.Errorf("plc设备发送消息失败：%v", err)
	}

	return nil
}

// 执行延时任务
func (a *TaskExecutor) doDelayTask(action *Action) error {
	time.Sleep(time.Duration(action.ExecutorProperty.DelaySeconds) * time.Second)
	return a.doTask(action)
}

func getAccessRPCHost(deviceid string) (string, error) {
	args := rpcs.ArgsGetDeviceOnlineStatus{
		Id: deviceid,
	}
	reply := &rpcs.ReplyGetDeviceOnlineStatus{}
	err := server.RPCCallByName(nil, rpcs.DeviceManagerName, "DeviceManager.GetDeviceOnlineStatus", args, reply)
	if err != nil {
		return "", err
	}
	return reply.AccessRPCHost, nil
}