build.ps1

$CakeVersion = "0.19.3"
$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";

# Make sure tools folder exists
$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
}

###########################################################################
# INSTALL NUGET
###########################################################################

$NUGET_EXE = Join-Path $ToolPath "nuget.exe"
$NUGET_URL = "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe"

# Try find NuGet.exe in path if not exists
if (!(Test-Path $NUGET_EXE)) {
    Write-Verbose -Message "Trying to find nuget.exe in PATH..."
    $existingPaths = $Env:Path -Split ';' | Where-Object { (![string]::IsNullOrEmpty($_)) -and (Test-Path $_ -PathType Container) }
    $NUGET_EXE_IN_PATH = Get-ChildItem -Path $existingPaths -Filter "nuget.exe" | Select -First 1
    if ($NUGET_EXE_IN_PATH -ne $null -and (Test-Path $NUGET_EXE_IN_PATH.FullName)) {
        Write-Verbose -Message "Found in PATH at $($NUGET_EXE_IN_PATH.FullName)."
        $NUGET_EXE = $NUGET_EXE_IN_PATH.FullName
    }
}

# Try download NuGet.exe if not exists
if (!(Test-Path $NUGET_EXE)) {
    Write-Verbose -Message "Downloading NuGet.exe..."
    try {
        (New-Object System.Net.WebClient).DownloadFile($NUGET_URL, $NUGET_EXE)
    } catch {
        Throw "Could not download NuGet.exe."
    }
}

# Save nuget.exe path to environment to be available to child processed
$ENV:NUGET_EXE = $NUGET_EXE

###########################################################################
# INSTALL CAKE
###########################################################################

Add-Type -AssemblyName System.IO.Compression.FileSystem
Function Unzip
{
    param([string]$zipfile, [string]$outpath)

    [System.IO.Compression.ZipFile]::ExtractToDirectory($zipfile, $outpath)
}

# Make sure Cake has been installed.
$CakePath = Join-Path $ToolPath "Cake.CoreCLR.$CakeVersion/Cake.dll"
if (!(Test-Path $CakePath)) {
    Write-Host "Installing Cake..."
     (New-Object System.Net.WebClient).DownloadFile("https://www.nuget.org/api/v2/package/Cake.CoreCLR/$CakeVersion", "$ToolPath\Cake.CoreCLR.zip")
     Unzip "$ToolPath\Cake.CoreCLR.zip" "$ToolPath/Cake.CoreCLR.$CakeVersion"
     Remove-Item "$ToolPath\Cake.CoreCLR.zip"
}

###########################################################################
# RUN BUILD SCRIPT
###########################################################################

& dotnet "$CakePath" $args
exit $LASTEXITCODE