mkdir download/windows -Force >$null

cd download

if (!(Test-Path "nuget.exe"))
{
	echo "Fetching NuGet."
	# Work around PowerShell's Invoke-WebRequest not being available on some versions of PowerShell by using the BCL.
	# To do that we need to work around further and use absolute paths because DownloadFile is not aware of PowerShell's current directory.
	$target = Join-Path $pwd.ToString() "nuget.exe"
	(New-Object System.Net.WebClient).DownloadFile("https://dist.nuget.org/win-x86-commandline/latest/nuget.exe", $target)
}

if (!(Test-Path "ICSharpCode.SharpZipLib.dll"))
{
	echo "Fetching ICSharpCode.SharpZipLib from NuGet."
	./nuget.exe install SharpZipLib -Version 1.1.0 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp SharpZipLib/lib/net45/ICSharpCode.SharpZipLib.dll .
	rmdir SharpZipLib -Recurse
}

if (!(Test-Path "nunit.framework.dll"))
{
	echo "Fetching NUnit from NuGet."
	./nuget.exe install NUnit -Version 3.0.1 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp NUnit/lib/net40/nunit.framework* .
	rmdir NUnit -Recurse
}

if (!(Test-Path "windows/SDL2.dll"))
{
	echo "Fetching SDL2 from libsdl.org"
	
	# Download zip:
	$zipFileName = "SDL2-2.0.10-win32-x64.zip"
	$target = Join-Path $pwd.ToString() $zipFileName
	(New-Object System.Net.WebClient).DownloadFile("https://www.libsdl.org/release/" + $zipFileName, $target)
	
	# Extract zip:
	$shell_app=new-object -com shell.application
	$currentPath = (Get-Location).Path
	$zipFile = $shell_app.namespace($currentPath + "\$zipFileName")
	$destination = $shell_app.namespace($currentPath + "\windows")
	$destination.Copyhere($zipFile.items())
	
	# Remove junk files:
	rm "$zipFileName"
	rm -path "$currentPath\windows\README-SDL.txt"
}

if (!(Test-Path "Open.Nat.dll"))
{
	echo "Fetching Open.Nat from NuGet."
	./nuget.exe install Open.Nat -Version 2.1.0 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp Open.Nat/lib/net45/Open.Nat.dll .
	rmdir Open.Nat -Recurse
}

if (!(Test-Path "windows/lua51.dll"))
{
	echo "Fetching Lua 5.1 from NuGet."
	./nuget.exe install lua.binaries -Version 5.1.5 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp lua.binaries/bin/win64/dll8/lua5.1.dll ./windows/lua51.dll
	rmdir lua.binaries -Recurse
}

if (!(Test-Path "windows/freetype6.dll"))
{
	echo "Fetching FreeType2 from NuGet."
	./nuget.exe install SharpFont.Dependencies -Version 2.6.0 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp SharpFont.Dependencies/bin/msvc9/x64/freetype6.dll ./windows/freetype6.dll
	rmdir SharpFont.Dependencies -Recurse
}

if (!(Test-Path "windows/soft_oal.dll"))
{
	echo "Fetching OpenAL Soft from NuGet."
	./nuget.exe install OpenAL-Soft -Version 1.16.0 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp OpenAL-Soft/bin/Win64/soft_oal.dll windows/soft_oal.dll
	rmdir OpenAL-Soft -Recurse
}

if (!(Test-Path "FuzzyLogicLibrary.dll"))
{
	echo "Fetching FuzzyLogicLibrary from NuGet."
	./nuget.exe install FuzzyLogicLibrary -Version 1.2.0 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp FuzzyLogicLibrary/bin/Release/FuzzyLogicLibrary.dll .
	rmdir FuzzyLogicLibrary -Recurse
}

if (!(Test-Path "rix0rrr.BeaconLib.dll"))
{
	echo "Fetching rix0rrr.BeaconLib from NuGet."
	./nuget.exe install rix0rrr.BeaconLib -Version 1.0.1 -ExcludeVersion -Verbosity quiet -Source nuget.org
	cp rix0rrr.BeaconLib/lib/net40/rix0rrr.BeaconLib.dll .
	rmdir rix0rrr.BeaconLib -Recurse
}

[Net.ServicePointManager]::SecurityProtocol = 'Tls12'

if (!(Test-Path "SDL2-CS.dll"))
{
	echo "Fetching SDL2-CS from GitHub."
	$target = Join-Path $pwd.ToString() "SDL2-CS.dll"
	(New-Object System.Net.WebClient).DownloadFile("https://github.com/OpenRA/SDL2-CS/releases/download/20190907/SDL2-CS.dll", $target)
}

if (!(Test-Path "OpenAL-CS.dll"))
{
	echo "Fetching OpenAL-CS from GitHub."
	$target = Join-Path $pwd.ToString() "OpenAL-CS.dll"
	(New-Object System.Net.WebClient).DownloadFile("https://github.com/OpenRA/OpenAL-CS/releases/download/20190907/OpenAL-CS.dll", $target)
}

if (!(Test-Path "Eluant.dll"))
{
	echo "Fetching Eluant from GitHub."
	$target = Join-Path $pwd.ToString() "Eluant.dll"
	(New-Object System.Net.WebClient).DownloadFile("https://github.com/OpenRA/Eluant/releases/download/20160124/Eluant.dll", $target)
}

cd ..
