[CmdletBinding()]

Param(

[string]$Target = "Default",

[ValidateSet("Release", "Debug")]

[string]$Configuration = "Release",

[ValidateSet("Quiet", "Minimal", "Normal", "Verbose", "Diagnostic")]

[string]$Verbosity = "Verbose",

[switch]$WhatIf,

[Parameter(Position=0,Mandatory=$false,ValueFromRemainingArguments=$true)]

[string[]]$ScriptArgs

)

$CakeVersion = "0.16.1"

$DotNetChannel = "preview";

$DotNetVersion = "1.0.0-preview2-003121";

$DotNetInstallerUri = "https://raw.githubusercontent.com/dotnet/cli/rel/1.0.0-preview2/scripts/obtain/dotnet-install.ps1";

$NugetUrl = "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe"

$PSScriptRoot = Split-Path $MyInvocation.MyCommand.Path -Parent

$ToolPath = Join-Path $PSScriptRoot "tools"

if (!(Test-Path $ToolPath)) {

Write-Verbose "Creating tools directory..."

New-Item -Path $ToolPath -Type directory | out-null

}

Function Remove-PathVariable([string]$VariableToRemove)

{

$path = [Environment]::GetEnvironmentVariable("PATH", "User")

if ($path -ne $null)

{

$newItems = $path.Split(';', [StringSplitOptions]::RemoveEmptyEntries) | Where-Object { "$($_)" -inotlike $VariableToRemove }

[Environment]::SetEnvironmentVariable("PATH", [System.String]::Join(';', $newItems), "User")

}

$path = [Environment]::GetEnvironmentVariable("PATH", "Process")

if ($path -ne $null)

{

$newItems = $path.Split(';', [StringSplitOptions]::RemoveEmptyEntries) | Where-Object { "$($_)" -inotlike $VariableToRemove }

[Environment]::SetEnvironmentVariable("PATH", [System.String]::Join(';', $newItems), "Process")

}

}

$FoundDotNetCliVersion = $null;

if (Get-Command dotnet -ErrorAction SilentlyContinue) {

$FoundDotNetCliVersion = dotnet --version;

}

if($FoundDotNetCliVersion -ne $DotNetVersion) {

$InstallPath = Join-Path $PSScriptRoot ".dotnet"

if (!(Test-Path $InstallPath)) {

mkdir -Force $InstallPath | Out-Null;

}

(New-Object System.Net.WebClient).DownloadFile($DotNetInstallerUri, "$InstallPath\dotnet-install.ps1");

& $InstallPath\dotnet-install.ps1 -Channel $DotNetChannel -Version $DotNetVersion -InstallDir $InstallPath;

Remove-PathVariable "$InstallPath"

$env:PATH = "$InstallPath;$env:PATH"

$env:DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1

$env:DOTNET_CLI_TELEMETRY_OPTOUT=1

}

$NugetPath = Join-Path $ToolPath "nuget.exe"

if (!(Test-Path $NugetPath)) {

Write-Host "Downloading NuGet.exe..."

(New-Object System.Net.WebClient).DownloadFile($NugetUrl, $NugetPath);

}

$CakePath = Join-Path $ToolPath "Cake.$CakeVersion/Cake.exe"

if (!(Test-Path $CakePath)) {

Write-Host "Installing Cake..."

Invoke-Expression "&`"$NugetPath`" install Cake -Version $CakeVersion -OutputDirectory `"$ToolPath`"" | Out-Null;

if ($LASTEXITCODE -ne 0) {

Throw "An error occured while restoring Cake from NuGet."

}

}

$Arguments = @{

target=$Target;

configuration=$Configuration;

verbosity=$Verbosity;

dryrun=$WhatIf;

}.GetEnumerator() | %{"--{0}=`"{1}`"" -f $_.key, $_.value };

Write-Host "Running build script..."

Invoke-Expression "& `"$CakePath`" `"build.cake`" $Arguments $ScriptArgs"

exit $LASTEXITCODE