package mongo

import (
	"encoding/json"

	"github.com/google/uuid"
)

const (
	_                   = iota
	almCodeCommmExcept  // 通信异常
	almCodeADFault      // AD故障
	almCodePPSExcept    // 同步秒脉冲异常
	almCodeBackup       // 备用
	almCodeUnitInit     // 单元初始化
	almCodeReadParamErr // 读参数错
	almCodeReserve      // 备用
	almCodeStartSample  // 启动采样-内部转换信号
	almCodeOverSample   // 秒内采样点数过量
	almCodeUnderSample  // 秒内采样点数欠量
)

type Alarm struct {
	DriverName  string `bson:"driver_name" json:"driver_name"`
	DeviceNo    string `bson:"device_no" json:"device_no"`
	AlarmCode   int    `bson:"alarm_code" json:"alarm_code"`
	AlarmTime   int64  `bson:"alarm_time" json:"alarm_time"`     // ms
	AlarmStatus int    `bson:"alarm_status" josn:"alarm_status"` // 0 "复位", 1 "动作/产生/告警"
}

var almCode2Name = map[int]string{
	almCodeCommmExcept:  "通信异常",
	almCodeADFault:      "AD故障",
	almCodePPSExcept:    "同步秒脉冲异常",
	almCodeBackup:       "备用",
	almCodeUnitInit:     "单元初始化",
	almCodeReadParamErr: "读参数错",
	almCodeReserve:      "备用",
	almCodeStartSample:  "启动采样-内部转换信号",
	almCodeOverSample:   "秒内采样点数过量",
	almCodeUnderSample:  "秒内采样点数欠量",
}

func (a *Alarm) GetName() string {
	return almCode2Name[a.AlarmCode]
}

func (a *Alarm) ConvertToEvent(ip string) *Event {
	e := new(Event)
	if a != nil {
		e.Event = a.GetName()
		e.EventUUID = uuid.NewString()
		e.Type = genEventType(0, 2)
		e.Priority = 5
		e.Status = eventStatusHappen
		e.Timestamp = a.AlarmTime / 1e3 // TODO ms ?
		e.From = "station"
		e.Operations = append(e.Operations, &operation{
			Action: eventActionHappened, // TODO
			OP:     ip,
			TS:     a.AlarmTime / 1e3,
		})
		e.Alarm = a
	}

	return e
}

func UnmarshallToAlarm(data []byte) (*Alarm, error) {
	alm := new(Alarm)
	err := json.Unmarshal(data, alm)
	return alm, err
}