# My powershell profile.

# customize the prompt to be a little more useful
function prompt {
    Write-Host -NoNewLine "["
    Write-Host -NoNewLine -Fore Green ("{0:HH}:{0:mm}" -f $(get-date))
    Write-Host -NoNewLine "] "
    Write-Host -Fore Cyan "${pwd}"
    "PS> "
}

<#
    .Synopsis
        Invoke a scriptblock with evelvated permissions.
#>
function Invoke-Elevated {
   param (
       [ScriptBlock]
       $code
   ) 
   # Elevate our permissions for this first.
   Start-Process powershell.exe -ArgumentList $code -WindowStyle hidden -Verb RunAs
}

<#
    .Synopsis
        Returns true if you are running with elevated privileges.
#>
function Get-Elevated {
    ([Security.Principal.WindowsPrincipal] `
      [Security.Principal.WindowsIdentity]::GetCurrent() `
    ).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
}

<#
    .Synopsis
        Create a symlink from a source to a destination.
    
    .Description
        Creates a symlink from a $Source to a $Destination.
        Automatically elevates to administrator privileges
        if necessary.
    
    .Parameter Source
        Required source to create the symlink from.
    
    .Parameter Destination
        Required destination to create the symlink at.
#>
function New-Link {
    param (
        [Parameter(Position=0, Mandatory=$true)]
        [String[]]
        $Source,

        [Parameter(Position=1, Mandatory=$true)]
        [String[]]
        $Destination
    )

    # This is a bit of a hack but it's necessary until they make it possible
    # to do symbolic links without administrator privileges
    if (Get-Elevated) {
        New-Item  -ItemType SymbolicLink -Path $Destination -Target $Source
    } else {
        # Elevate our permissions for this first.
        Invoke-Elevated {
            New-Item  -ItemType SymbolicLink -Path $Destination -Target $Source
        }
    }
}