Sample for a complex PowerShell ParameterSet implementation

PS_ParameterSets

##AH - AdilHindistan
## Sample for a complex Parameter Set
## The best way to get it right is to write them down as shown in .NOTES

<#
        
    .NOTES
    Parameter Sets
    P1: SourceDN DestinationDN SourcePercent Recurse
    P2: SourceOU DestinationOU SourcePercent Recurse
    P3: SourceDN DestinationDN DestinationPercent Recurse (Default)
    P4: SourceOU DestinationOU DestinationPercent Recurse
    Recurse is Optional in each


    Move-ComputerFromOneOUToAnotherByPercent [-SourceDN] <string> [-DestinationDN] <string> [-SourcePercent] <int> [[-Recurse]]  [<CommonParameters>]    
    Move-ComputerFromOneOUToAnotherByPercent [-DestinationPercent] <int> [[-Recurse]] [-SourceDN <string>] [-DestinationDN <string>]  [<CommonParameters>]    
    Move-ComputerFromOneOUToAnotherByPercent [-SourceOU <ADOrganizationalUnit>] [-DestinationOU <ADOrganizationalUnit>] [-DestinationPercent <int>] [[-Recurse]] [<CommonParameters>]    
    Move-ComputerFromOneOUToAnotherByPercent [-SourceOU] <ADOrganizationalUnit> [-DestinationOU] <ADOrganizationalUnit> [-SourcePercent <int>] [[-Recurse]] [<CommonParameters>]
    
#>



Function Move-ComputerFromOneOUToAnotherByPercent {
#Requires -Modules ActiveDirectory
    [CMDLETBINDING(
        DefaultParameterSetName='p3' ## SourceDN,DestinationDN,DestinationPercent
    )]
    Param(
        # DistingishedName of Source OU
        [Parameter(
            Mandatory=$true,
            Position=0,
            ParameterSetName='p1'            
        )]        
        [Parameter(ParameterSetName='p3')]        
        [ValidateScript({$_ -contains ',dc='})]
        [string]$SourceDN,

        # Source OU Object
        [Parameter(
            Mandatory=$true,
            Position=0,
            ParameterSetName='p2'
        )]        
        [Parameter(ParameterSetName='p4')]  
        [Microsoft.ActiveDirectory.Management.ADOrganizationalUnit]$SourceOU,

        # DistinguishedName of Destination OU
        [Parameter(
            Mandatory=$true,
            Position=1,
            ParameterSetName='p1'
        )]        
        [Parameter(ParameterSetName='p3')]        
        [ValidateScript({$_ -contains ',dc='})]
        [string]$DestinationDN,
        
        # Destination OU as ADOrganizationalUnit
        [Parameter(
            Mandatory=$true,
            Position=1,
            ParameterSetName='p2'            
        )]                
        [Parameter(ParameterSetName='p4')] 
        [ValidateScript({$_ -contains ',dc='})]
        [Microsoft.ActiveDirectory.Management.ADOrganizationalUnit]$DestinationOU,

        # % of computers that will be moved from Source OU to Destination OU
        [Parameter(
                Mandatory=$true,
                Position=2,
                ParameterSetName='p1'
        )]       
        [Parameter(ParameterSetName='p2')]        
        [ValidateRange(1,100)]
        [int]$SourcePercent,

        # % of Source of the destination OU should be
        [Parameter(
            Mandatory=$true,            
            Position=2,
            ParameterSetName='p3'
        )]        
        [Parameter(ParameterSetName='p4')]        
        [ValidateRange(1,100)]        
        [int]$DestinationPercent,

        # Include Sub OUs of Source OU
        [Parameter(Position=3)]
        [switch]$Recurse
    )

    Begin 
    {
        If ($PSCmdlet.ParameterSetName -eq 'p1') {
            If ($Recurse) {
                $SourceComputers = Get-ADComputer -SearchBase $SourceDN -Filter * -SearchScope Subtree
            } else {
                $SourceComputers = Get-ADComputer -SearchBase $SourceDN -Filter * -SearchScope OneLevel
            }
        }    
    }

    Process
    {
        
    }


}