public/New-AuthorizationHeader.ps1

<#
.SYNOPSIS
  Creates a HTTP Authorization header
 
.DESCRIPTION
 Creates a HTTP Authorization header for Basic or Bearer auth based on the inputs
 
.NOTES
  Author: Jan-Henrik Damaschke
 
.EXAMPLE
   New-AuthorizationHeader -token 'your-token' -asJson
 
   This example generates a Bearer token Authorization header and outputs it as a JSON string.
 
.EXAMPLE
   New-AuthorizationHeader -username 'your-username' -password 'your-password'
 
   This example generates a Basic authentication Authorization header.
#>


function New-AuthorizationHeader {
  [CmdletBinding()]
  param (
    [Parameter(Mandatory, ParameterSetName = 'Bearer', Position = 0)]
    [string]
    $token,
    [Parameter(ParameterSetName = 'Basic')]
    [string]
    $username = '',
    [Parameter(ParameterSetName = 'Basic')]
    [securestring]
    $password = '',
    [Parameter(ParameterSetName = 'Basic')]
    [Parameter(ParameterSetName = 'Bearer')]
    [switch]
    $asJson
  )
  $header = @{Authorization = '' }
  if ($token) {
    $header.Authorization = "Bearer $token"
  }
  else {
    $basicAuth = [Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes("${username}:$(ConvertFrom-SecureString -AsPlainText $password)"))
    $header.Authorization = "Basic $basicAuth"
  }
  $asJson ? (ConvertTo-Json -InputObject $header): $header
}

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