Installs modules if they are missing prior to import

install-and-import.ps1

# Installs modules if they are missing prior to importing
# Does not upgrade modules, only installs them if they are missing
#
# Example usage:
#   install-and-import pscx

function install-and-import {
    Param(
        [Parameter(Mandatory=$true)]
        [string]$moduleName
    )
    $oldErrorActionPreference = $ErrorActionPreference
    $ErrorActionPreference = "Stop"

    echo "Importing $moduleName"
    if ( -not $( Get-Module -Name $moduleName -ListAvailable ) ) {
        echo " Module $moduleName is not installed. Installing now..."
        Install-Module -Force -AllowClobber $moduleName
    }
    
    Import-Module $moduleName
    $ErrorActionPreference = $oldErrorActionPreference
}