# THIS IS JUST TEMPORARY

# We are waiting on the release of VS 2020 P5

Param (

[string] $MSBuild = "$env:MSBUILD_EXE"

)

$ErrorActionPreference = "Stop"

$msbuildRoot = Split-Path -Parent $MSBuild

$files = @{

'System.Text.Json' = '5.0.0.0';

'System.Text.Encodings.Web' = '5.0.0.0';

'System.Threading.Tasks.Extensions' = '4.2.0.1';

}

$urls = @{

'https://globalcdn.nuget.org/packages/system.text.json.5.0.0.nupkg' = 'lib\net461\System.Text.Json.dll';

'https://globalcdn.nuget.org/packages/system.text.encodings.web.5.0.0.nupkg' = 'lib\netstandard2.0\System.Text.Encodings.Web.dll';

'https://globalcdn.nuget.org/packages/system.threading.tasks.extensions.4.5.4.nupkg' = 'lib\netstandard2.0\System.Threading.Tasks.Extensions.dll';

}

# backup

Write-Host "Backing up files..."

foreach ($file in $files.GetEnumerator()) {

$p = Join-Path $msbuildRoot "$($file.Key).dll"

if (!(Test-Path $p-old)) {

Move-Item $p $p-old

}

}

# replace

foreach ($url in $urls.GetEnumerator()) {

$nupkg = Split-Path -Leaf $url.Key

$dst = Join-Path $env:TEMP $nupkg

$extract = "$dst-out"

$dll = Split-Path -Leaf $url.Value

$src = Join-Path $extract $url.Value

$dst = Join-Path $msbuildRoot $dll

Write-Host "Replacing file '$dll'..."

# clean

Remove-Item -Force -Recurse -ErrorAction Ignore $dst

Remove-Item -Force -Recurse -ErrorAction Ignore $extract

# download and extract

Invoke-WebRequest -Uri $url.Key -OutFile $dst

Expand-Archive -Path $dst -DestinationPath $extract

# copy

Copy-Item -Path $src -Destination $dst

}

# update config

$config = [xml](Get-Content "$MSBuild.config")

foreach ($file in $files.GetEnumerator()) {

Write-Host "Updating config for file '$($file.Key).dll'..."

$v = $file.Value

$rootXpath = "/configuration/runtime/*[local-name()='assemblyBinding']/*[local-name()='dependentAssembly' and *[local-name()='assemblyIdentity' and @name='$($file.Key)']]/*[local-name()='bindingRedirect']"

$oldVersionXpath = "$rootXpath/@oldVersion"

$node = $config.SelectNodes($oldVersionXpath)[0]

$node.Value = "0.0.0.0-$v"

$newVersionXpath = "$rootXpath/@newVersion"

$node = $config.SelectNodes($newVersionXpath)[0]

$node.Value = $v

}

$config.Save("$MSBuild.config")