# Authenticate to VSS REST service

$user = Read-Host -Prompt 'User name'
$pass = Read-Host -Prompt 'password' -AsSecureString

# convert secureString to plain text
$BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pass)
$UnsecurePassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)

# $pair = "${user}:${$UnsecurePassword}"
$pair = $user + ":" + $UnsecurePassword

# Encode the string to the RFC2045-MIME variant of Base64, except not limited to 76 char/line.
$bytes = [System.Text.Encoding]::ASCII.GetBytes($pair)
$base64 = [System.Convert]::ToBase64String($bytes)

# Create the Auth value as the method, a space, and then the encoded pair Method Base64String
$basicAuthValue = "Basic $base64"

# Create the header Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
$headers = @{ Authorization = $basicAuthValue }

#Invoke-WebRequest -uri "https://vss-ws.eis.utoronto.ca:8001/auth/request-token" -Headers $headers -method POST

# by using the following and calling the script as "$TK = .\auth.ps1, $TK is populed with a PS object containing the token
Invoke-RestMethod -uri "https://vss-ws.eis.utoronto.ca:8001/auth/request-token" -Headers $headers -method POST