use assembly="System.IO.Compression.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
use namespace="System.IO"
use namespace="System.IO.Compression"
use namespace="System.Net"

default binDir = '${Path.Combine(Directory.GetCurrentDirectory(), "bin")}'

-// When updating the node version you need to update the nodeExeSha to match what 'signtool.exe /pa /v node.exe' emits
default nodeVer = '0.10.28'
default npmVer = '1.4.9'
default nodeExeSha = '628FFD6C3577068C00CEC9F6F897F0EC8F5212D9'
default nodeInstallDir = '${Path.Combine(binDir, "nodejs")}'
default nodeGloballyInstalled = '${TestCommand("node" , "--version")}'

var nodeExe = 'node.exe'
var npmZip = 'npm-${npmVer}.zip'
var nodeDist = 'http://nodejs.org/dist/'
var nodeUrl = '${nodeDist}v${nodeVer}/${nodeExe}'
var npmUrl = '${nodeDist}npm/${npmZip}'
var doInstall = '${!nodeGloballyInstalled && !Directory.Exists(nodeInstallDir)}'
var nodeInstallExePath = '${Path.Combine(nodeInstallDir, nodeExe)}'
var npmInstallZipPath = '${Path.Combine(nodeInstallDir, npmZip)}'

@{
  if (doInstall) {
    Log.Info("Installing nodejs locally");

    if (Directory.Exists(nodeInstallDir))
    {
        Directory.Delete(nodeInstallDir, recursive: true);
    }
    Directory.CreateDirectory(nodeInstallDir);

    // Download node
    var wc = new WebClient();

    Log.Info(string.Format("Downloading {0} to {1}", nodeUrl, nodeInstallExePath));
    wc.DownloadFile(nodeUrl, nodeInstallExePath);

    Log.Info(string.Format("Downloading {0} to {1}", npmUrl, npmInstallZipPath));
    wc.DownloadFile(npmUrl, npmInstallZipPath);

    // Unzip npm
    Log.Info(string.Format("Unzipping npm to {0}", nodeInstallDir));
    ZipFile.ExtractToDirectory(npmInstallZipPath, nodeInstallDir);
  }
}

verify-authenticode verifyFilePath='${nodeInstallExePath}' expectedHash='${nodeExeSha}' if='doInstall'