PowerShell Bootstrap Script

install-powershell.ps1

<#
.SYNOPSIS
  Install PowerShell on Windows, Linux or macOS.
#>
[CmdletBinding(SupportsShouldProcess)]
param(
  #Where PowerShell should be installed.
  [string]$Destination,
  #The version to install. Default is the latest stable version. Additional Options are a LTS, Preview, Daily, or a specific version number tag.
  [ValidateNotNullOrEmpty][string]$Version = 'Stable'
)
Set-StrictMode -Version 3.0

# Setting Tls to 12 to prevent the Invoke-WebRequest : The request was
# aborted: Could not create SSL/TLS secure channel. error.
$originalValue = [Net.ServicePointManager]::SecurityProtocol
[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
$metadataUri = 'https://raw.githubusercontent.com/PowerShell/PowerShell/master/tools/metadata.json'
$metadata = Invoke-RestMethod -UseBasicParsing $metadataUri

$tag = switch ($Version) {
  'Stable' {
    $metadata.PSData.StableVersion -replace '^v'
  }
  'Preview' {

  }
}