Param($Disk, $Type="", $Format="", $SysFile="")

$ErrorAction = 'Stop'

$CpmToolsPath = '../../Tools/cpmtools'

$env:PATH = $CpmToolsPath + ';' + $env:PATH

if ($Type.Length -eq 0)
{
	Write-Error "No disk type specified!" -ErrorAction Stop
	return
}

if ($Format.Length -eq 0)
{
	Write-Error "No disk format specified!" -ErrorAction Stop
	return
}

switch ($Format)
{
	"wbw_fd144"
	{
		# 1.44MB Floppy Disk
		$Desc = "1.44MB Floppy Disk"
		$ImgFile = "fd144_${Disk}.img"
		$MediaID = 6
		$Size = 1440KB
	}

	"wbw_hd512"
	{
		# 512 Directory Entry Hard Disk Format
		$Desc = "Hard Disk (512 directory entry format)"
		$ImgFile = "hd512_${Disk}.img"
		$MediaID = 4
		$Size = 8MB + 128KB
	}

	"wbw_hd1k"
	{
		# 1024 Directory Entry Hard Disk Format
		$Desc = "Hard Disk (1024 directory entry format)"
		$ImgFile = "hd1k_${Disk}.img"
		$MediaID = 10
		$Size = 8MB
	}
}

if (-not (Test-Path("d_${Disk}/")))
{
	Write-Error "Source directory d_${Disk} for disk ${Disk} not found!" -ErrorAction Stop 
	return
}

"Generating $Disk $Desc..."

if ($SysFile.Length -gt 0) 
	{ [byte[]]$SysImg = [System.IO.File]::ReadAllBytes($SysFile) }
else 
	{ [byte[]]$SysImg = @() }

$Image = ($SysImg + ([byte[]](0xE5) * ($Size - $SysImg.length)))

# $Image[1410] = 0x4D
# $Image[1411] = 0x49
# $Image[1412] = 0x44
# $Image[1413] = $MediaID

[System.IO.File]::WriteAllBytes($ImgFile, $Image)

for ($Usr=0; $Usr -lt 16; $Usr++)
{
	if (Test-Path ("d_${Disk}/u${Usr}/*")) 
	{
		$Cmd = "cpmcp -f $Format $ImgFile d_${Disk}/u${Usr}/*.* ${Usr}:"
		$Cmd
		Invoke-Expression $Cmd
		if ($LASTEXITCODE -gt 0) {throw "Command returned exit code $LASTEXITCODE"}
	}
}

if (Test-Path("${Type}_${Disk}.txt"))
{
	foreach($Line in Get-Content "${Type}_${Disk}.txt")
	{
		$Spec = $Line.Trim()
		if (($Spec.Length -gt 0) -and ($Spec.Substring(0,1) -ne "#"))
		{
			$Cmd = "cpmcp -f $Format $ImgFile ${Spec}"
			$Cmd
			Invoke-Expression $Cmd
			if ($LASTEXITCODE -gt 0) {throw "Command returned exit code $LASTEXITCODE"}
		}
	}
}

"Moving image $ImgFile into output directory..."

Move-Item $ImgFile -Destination "..\..\Binary\" -Force

return