package domain

import (
	"time"

	proto "fwh-toolbox-server/function/FaultRecordProtocol"

	"go.mongodb.org/mongo-driver/bson/primitive"
)

// FaultRecordOpKind 故障录波 MQTT 操作类型
type FaultRecordOpKind string

const (
	FaultRecordOpDeviceInfo  FaultRecordOpKind = "device_info"  // cmd=0
	FaultRecordOpRecordFetch FaultRecordOpKind = "record_fetch" // cmd=2
	FaultRecordOpParamRead   FaultRecordOpKind = "param_read"   // cmd=3
	FaultRecordOpParamWrite  FaultRecordOpKind = "param_write"  // cmd=1
)

// Cmd 操作对应的业务层 cmd
func (k FaultRecordOpKind) Cmd() int {
	switch k {
	case FaultRecordOpDeviceInfo:
		return proto.CmdRealtime
	case FaultRecordOpRecordFetch:
		return proto.CmdGetRecord
	case FaultRecordOpParamRead:
		return proto.CmdQueryParam
	case FaultRecordOpParamWrite:
		return proto.CmdSetParam
	}
	return -1
}

// FaultRecordOpStatus 操作状态
type FaultRecordOpStatus string

const (
	// 进行中
	FaultRecordStatusPending    FaultRecordOpStatus = "pending"    // 已创建，未发送
	FaultRecordStatusSent       FaultRecordOpStatus = "sent"       // 已发送 377
	FaultRecordStatusAccepted   FaultRecordOpStatus = "accepted"   // 收到 378
	FaultRecordStatusReady      FaultRecordOpStatus = "ready"      // 收到 379（record_fetch 继续等待上传）
	FaultRecordStatusUploading  FaultRecordOpStatus = "uploading"  // 收到 607
	FaultRecordStatusUploaded   FaultRecordOpStatus = "uploaded"   // 收到 609 成功
	FaultRecordStatusDownloaded FaultRecordOpStatus = "downloaded" // 文件已存 MinIO

	// 终止
	FaultRecordStatusDone           FaultRecordOpStatus = "done"
	FaultRecordStatusItemFailed     FaultRecordOpStatus = "item_failed"     // 379 中有子项失败
	FaultRecordStatusBusy           FaultRecordOpStatus = "busy"            // 设备正在处理其他命令
	FaultRecordStatusRejected       FaultRecordOpStatus = "rejected"        // 378 失败或 379 错误回复
	FaultRecordStatusTimeout        FaultRecordOpStatus = "timeout"         // 某阶段等待超时，见 TimeoutStage
	FaultRecordStatusUploadFailed   FaultRecordOpStatus = "upload_failed"   // 609 失败
	FaultRecordStatusDownloadFailed FaultRecordOpStatus = "download_failed" // 下载或存储失败
	FaultRecordStatusParseFailed    FaultRecordOpStatus = "parse_failed"    // 文件已保存但解析失败
	FaultRecordStatusCancelled      FaultRecordOpStatus = "cancelled"
	FaultRecordStatusInterrupted    FaultRecordOpStatus = "interrupted"    // 服务重启时处于无法安全恢复的阶段
	FaultRecordStatusGatewayLocked  FaultRecordOpStatus = "gateway_locked" // 本工具内该网关已有操作进行中
	FaultRecordStatusError          FaultRecordOpStatus = "error"          // 其他错误（MQTT 不可用等）
)

var faultRecordTerminal = map[FaultRecordOpStatus]bool{
	FaultRecordStatusDone: true, FaultRecordStatusItemFailed: true, FaultRecordStatusBusy: true,
	FaultRecordStatusRejected: true, FaultRecordStatusTimeout: true, FaultRecordStatusUploadFailed: true,
	FaultRecordStatusDownloadFailed: true, FaultRecordStatusParseFailed: true, FaultRecordStatusCancelled: true,
	FaultRecordStatusInterrupted: true, FaultRecordStatusGatewayLocked: true, FaultRecordStatusError: true,
}

func (s FaultRecordOpStatus) Terminal() bool { return faultRecordTerminal[s] }

// CanRetryDownload 上传已完成（收到 609）但下载失败或超时，且有文件名时，可手动重试下载
func (op *FaultRecordOperation) CanRetryDownload() bool {
	if op.Kind != FaultRecordOpRecordFetch || op.FileName == "" {
		return false
	}
	if _, uploaded := op.StageTimes[string(FaultRecordStatusUploaded)]; !uploaded {
		return false
	}
	return op.Status == FaultRecordStatusDownloadFailed || op.Status == FaultRecordStatusTimeout
}

// FaultRecordTerminalStatuses 全部终止状态
func FaultRecordTerminalStatuses() []FaultRecordOpStatus {
	list := make([]FaultRecordOpStatus, 0, len(faultRecordTerminal))
	for s := range faultRecordTerminal {
		list = append(list, s)
	}
	return list
}

// FaultRecordOpRequest 操作请求参数
type FaultRecordOpRequest struct {
	CodeList      []int            `bson:"codeList,omitempty" json:"codeList,omitempty"`           // device_info
	RecordIndex   int              `bson:"recordIndex,omitempty" json:"recordIndex,omitempty"`     // record_fetch（旧记录，单条）
	RecordIndexes []int            `bson:"recordIndexes,omitempty" json:"recordIndexes,omitempty"` // record_fetch，可多条
	IdList        []int            `bson:"idList,omitempty" json:"idList,omitempty"`               // param_read
	ParaList      []proto.ParaItem `bson:"paraList,omitempty" json:"paraList,omitempty"`           // param_write
}

// Indexes 本次获取的记录序号（兼容只有 RecordIndex 的旧记录）
func (r FaultRecordOpRequest) Indexes() []int {
	if len(r.RecordIndexes) > 0 {
		return r.RecordIndexes
	}
	if r.RecordIndex > 0 {
		return []int{r.RecordIndex}
	}
	return nil
}

// FaultRecordOpMessage 收发的原始报文
type FaultRecordOpMessage struct {
	Direction string    `bson:"direction" json:"direction"` // send / recv / http（文件下载）/ action（用户操作，如手动重试下载）
	Topic     string    `bson:"topic" json:"topic"`
	CmdType   uint      `bson:"cmdType" json:"cmdType"`
	At        time.Time `bson:"at" json:"at"`
	Raw       string    `bson:"raw" json:"raw"`
}

// FaultRecordOperation 一次故障录波 MQTT 操作（MongoDB 文档）
type FaultRecordOperation struct {
	ID         primitive.ObjectID   `bson:"_id" json:"id"`
	Env        string               `bson:"env" json:"env"`
	GatewaySn  string               `bson:"gatewaySn" json:"gatewaySn"`
	DeviceType string               `bson:"deviceType" json:"deviceType"` // pe / aGate
	DeviceSn   string               `bson:"deviceSn" json:"deviceSn"`
	Kind       FaultRecordOpKind    `bson:"kind" json:"kind"`
	Cmd        int                  `bson:"cmd" json:"cmd"`
	Request    FaultRecordOpRequest `bson:"request" json:"request"`
	Operator   string               `bson:"operator" json:"operator"`

	Status       FaultRecordOpStatus  `bson:"status" json:"status"`
	TimeoutStage FaultRecordOpStatus  `bson:"timeoutStage,omitempty" json:"timeoutStage,omitempty"` // 超时时所等待的阶段
	Error        string               `bson:"error,omitempty" json:"error,omitempty"`
	StageTimes   map[string]time.Time `bson:"stageTimes" json:"stageTimes"`
	CancelReq    bool                 `bson:"cancelRequested" json:"cancelRequested"`
	ExitSent     bool                 `bson:"exitSent" json:"exitSent"` // 取消时已向设备发送 cmd=4

	Messages []FaultRecordOpMessage `bson:"messages" json:"messages,omitempty"`
	Reply    *proto.Reply           `bson:"reply,omitempty" json:"reply,omitempty"` // 379 原文结构

	// record_fetch
	FileName      string `bson:"fileName,omitempty" json:"fileName,omitempty"` // 609.fileName
	FaultRecordID int64  `bson:"faultRecordId,omitempty" json:"faultRecordId,omitempty"`
	UploadEquipNo string `bson:"uploadEquipNo,omitempty" json:"-"` // 下载路径中的 equipNo
	MinioObject   string `bson:"minioObject,omitempty" json:"-"`
	FileSize      int64  `bson:"fileSize,omitempty" json:"fileSize,omitempty"`

	// 手动重试下载：上传已完成（收到 609）但下载失败时，由用户触发重新下载
	DownloadRetryAt    *time.Time `bson:"downloadRetryAt,omitempty" json:"downloadRetryAt,omitempty"`
	DownloadRetryCount int        `bson:"downloadRetryCount,omitempty" json:"downloadRetryCount,omitempty"`

	CreatedAt time.Time `bson:"createdAt" json:"createdAt"`
	UpdatedAt time.Time `bson:"updatedAt" json:"updatedAt"`
}