//go:build windows
// +build windows

package staros

import (
	"syscall"
	"time"
	"unsafe"

	"b612.me/wincmd"

	"b612.me/win32api"
)

// StartTime 开机时间
func StartTime() time.Time {
	data, _ := win32api.GetTickCount()
	date := float64(time.Now().Unix())
	unix := date - float64(data)/1000
	max := (unix - float64(int64(unix))) * 1000000000
	return time.Unix(int64(unix), int64(max))
}

// IsRoot 当前是否是管理员用户
func IsRoot() bool {
	return wincmd.Isas()
}

func DiskUsage(path string) (disk DiskStatus) {
	disk, _ = DiskUsageE(path)
	return
}

func DiskUsageE(path string) (disk DiskStatus, err error) {
	if path == "" {
		path = "."
	}
	lpFreeBytesAvailable := int64(0)
	lpTotalNumberOfBytes := int64(0)
	lpTotalNumberOfFreeBytes := int64(0)

	path16, err := syscall.UTF16PtrFromString(path)
	if err != nil {
		return
	}
	r1, _, callErr := syscall.NewLazyDLL("kernel32.dll").NewProc("GetDiskFreeSpaceExW").Call(
		uintptr(unsafe.Pointer(path16)),
		uintptr(unsafe.Pointer(&lpFreeBytesAvailable)),
		uintptr(unsafe.Pointer(&lpTotalNumberOfBytes)),
		uintptr(unsafe.Pointer(&lpTotalNumberOfFreeBytes)),
	)
	if r1 == 0 {
		err = callErr
		return
	}
	disk.Free = uint64(lpTotalNumberOfFreeBytes)
	disk.Used = uint64(lpTotalNumberOfBytes - lpTotalNumberOfFreeBytes)
	disk.All = uint64(lpTotalNumberOfBytes)
	disk.Available = uint64(lpFreeBytesAvailable)
	return
}

func CpuUsage(sleep time.Duration) float64 {
	return 0
}