package HikSDK

/*
#cgo LDFLAGS: -Wl,--allow-multiple-definition
#include <stdio.h>
#include <string.h>
*/
import "C"
import (
	"gitea.com/kunmeng/HikNetSDKPkg/Core"
	"time"
	"unsafe"
)

type Nvr struct {
	userId     Core.LONG
	deviceInfo Core.NET_DVR_DEVICEINFO_V30
}

func NewNvr(Ip string, Port int, Username, Password string) (*Nvr, error) {
	userId, deviceInfo, err := Core.Login(Ip, Port, Username, Password)
	if err != nil {
		return nil, err
	}
	return &Nvr{
		userId:     userId,
		deviceInfo: deviceInfo,
	}, nil
}

func (this *Nvr) getNvrUTCDiff() (int, error) {
	var data Core.NET_DVR_NETAPPCFG
	var dataPtr = unsafe.Pointer(data.GetCPtr())
	err := Core.GetDVRConfig(this.userId, 222, 0, dataPtr, Core.DWORD(unsafe.Sizeof(data.GetC())))
	if err != nil {
		return 0, err
	}
	data.Go()

	return int(data.StruNtpClientParam.CTimeDifferenceH)*60 + int(data.StruNtpClientParam.CTimeDifferenceM)*map[int8]int{-1: -1, 0: 1}[data.StruNtpClientParam.CTimeDifferenceH>>7], nil
}

func (this *Nvr) CheckTimeRegionWithMonth(Year, Month, Channel uint16) ([]uint8, error) {

	//	//// 查当月
	var struSearchParam Core.NET_DVR_MRD_SEARCH_PARAM
	struSearchParam.DwSize = Core.DWORD(unsafe.Sizeof(struSearchParam.GetC()))
	struSearchParam.WYear = Core.WORD(Year)
	struSearchParam.ByMonth = Core.BYTE(Month)
	struSearchParam.StruStreamInfo.DwChannel = Core.DWORD(32 + Channel)
	struSearchParam.ByLocalOrUTC = 1
	struSearchParam.ByDrawFrame = 0
	struSearchParam.ByStreamType = 0

	var dataPtr = unsafe.Pointer(struSearchParam.GetCPtr())

	var ResData Core.NET_DVR_MRD_SEARCH_RESULT
	var ResDataPtr = unsafe.Pointer(ResData.GetCPtr())

	err := Core.GetDVRDeviceConfig(this.userId, 6164, 0, dataPtr, Core.DWORD(unsafe.Sizeof(struSearchParam.GetC())), nil, ResDataPtr, Core.DWORD(unsafe.Sizeof(ResData.GetC())))
	if err != nil {
		return nil, err
	}
	ResData.Go()
	var res []uint8
	for i := 0; i < 32; i++ {
		if ResData.ByRecordDistribution[i] != 0 {
			res = append(res, uint8(i+1))
		}
	}
	return res, nil
}

func (this *Nvr) CheckTimeRegionWithDay(Year, Month, Day, Channel uint16) ([]TimeRange, error) {
	var Data Core.NET_DVR_FILECOND
	Data.DwFileType = 0xff
	Data.DwIsLocked = 0xff
	Data.DwUseCardNo = 0
	Data.LChannel = Core.LONG(32 + Channel)
	StartTime := Core.NET_DVR_TIME{
		DwYear:   Core.DWORD(Year),
		DwMonth:  Core.DWORD(Month),
		DwDay:    Core.DWORD(Day),
		DwHour:   0,
		DwMinute: 0,
		DwSecond: 0,
	}
	StopTime := Core.NET_DVR_TIME{
		DwYear:   Core.DWORD(Year),
		DwMonth:  Core.DWORD(Month),
		DwDay:    Core.DWORD(Day),
		DwHour:   23,
		DwMinute: 59,
		DwSecond: 59,
	}
	Data.StruStartTime = StartTime
	Data.StruStopTime = StopTime
	QueryHandle, err := Core.NET_DVR_FindFile_V30(this.userId, Data)
	if err != nil {
		return nil, err
	}
	var FindData Core.NET_DVR_FINDDATA_V30
	var state Core.LONG
	state, err = Core.NET_DVR_FindNextFile_V30(QueryHandle, &FindData)
	if err != nil {
		return nil, err
	}
	ByUTCDiff, err := this.getNvrUTCDiff()
	if err != nil {
		return nil, err
	}
	var res []TimeRange
	for state > 0 {
		var StartTimeObj time.Time
		var EndTimeObj time.Time

		if state == 1001 {
			break
		}
		if state == 1003 {
			break
		}
		if state == 1004 {
			break
		}
		if state == 1000 {
			if uint16(FindData.StruStartTime.DwDay) != Day {
				StartTimeObj = time.Date(int(FindData.StruStartTime.DwYear), time.Month(FindData.StruStartTime.DwMonth), int(FindData.StruStartTime.DwDay), 0, 0, 0, 0, time.UTC)
			} else {
				StartTimeObj = time.Date(int(FindData.StruStartTime.DwYear), time.Month(FindData.StruStartTime.DwMonth), int(FindData.StruStartTime.DwDay), int(FindData.StruStartTime.DwHour), int(FindData.StruStartTime.DwMinute), int(FindData.StruStartTime.DwSecond), 0, time.UTC)
			}
			if uint16(FindData.StruStopTime.DwDay) != Day {
				EndTimeObj = time.Date(int(FindData.StruStopTime.DwYear), time.Month(FindData.StruStopTime.DwMonth), int(FindData.StruStopTime.DwDay), 0, 0, 0, 0, time.UTC)
			} else {
				EndTimeObj = time.Date(int(FindData.StruStopTime.DwYear), time.Month(FindData.StruStopTime.DwMonth), int(FindData.StruStopTime.DwDay), int(FindData.StruStopTime.DwHour), int(FindData.StruStopTime.DwMinute), int(FindData.StruStopTime.DwSecond), 0, time.UTC)
			}
			StartTimeObj = StartTimeObj.Add(time.Minute * time.Duration(ByUTCDiff))
			EndTimeObj = EndTimeObj.Add(time.Minute * time.Duration(ByUTCDiff))
			res = append(res, TimeRange{
				StartTime: StartTimeObj,
				EndTime:   EndTimeObj,
			})
		}
		if state == 1002 {
			FindData = Core.NET_DVR_FINDDATA_V30{}
			state, err = Core.NET_DVR_FindNextFile_V30(QueryHandle, &FindData)
			time.Sleep(time.Millisecond * 5)
			continue
		}

		FindData = Core.NET_DVR_FINDDATA_V30{}
		state, err = Core.NET_DVR_FindNextFile_V30(QueryHandle, &FindData)
		if err != nil {
			return res, err
		}
		time.Sleep(time.Millisecond * 5)
	}

	err = Core.NET_DVR_FindClose_V30(QueryHandle)
	if err != nil {
		return nil, err
	}
	return res, nil
}
func (this *Nvr) Logout() error {
	return Core.Logout(this.userId)
}

type TimeRange struct {
	StartTime time.Time
	EndTime   time.Time
}