SharePoint: Add Site Content Type

Add-SPSiteContentType.ps1

function Add-SPSiteContentType
{
    <#
        .Synopsis
            This advanced function adds a Content Type to a Document Library based on search criteria.
        .Description
            This function will add a new Content Type into all libraries that contain the -lookForCT specified in the function.

            This function also produces a series of reports capturing the work carried out in the function, and any errors experienced.
        .Example
            C:\> Add-SPSiteContentType –SiteUrl “http://yourdomain.com/sites/Finance -lookForCT "Document" -NewCType "Scanned Document" -outputPath "C:\Script_Reports\"

            This example looks across the 'Finance' site collection for libraries that contain the Content Type 'Document'.
            If the Content Type 'Document' exists within a library it will add the new Content Type 'Scanned Document'.
        .Example
            C:\> Add-SPSiteContentType –SiteUrl “http://yourdomain.com/sites/Finance -lookForCT "Document" -NewCType "Scanned Document" -outputPath "C:\Script_Reports\" -SmtpServer "mail01.yourdomain.com" -EmailFrom "SPTask@yourdomain.com" -EmailTo "You@yourdomain.com"

            This example is identical to Example 1, however it includes email notifications - This is particularly good for large environments
            where this function may take a long time to iterate through all libraries within the specified site colleciton.
        .Notes
            Name: Add-SPSiteContentType
            Author: Petro Margaritis
            Last Edit: 19/05/2012
            Keywords: Content Types
        .Link
            http://www.iampetro.com/
    #>
    Param (
        [parameter(Mandatory=$true)][string]$SiteUrl,
        [parameter(Mandatory=$true)][string]$lookForCT,
        [parameter(Mandatory=$true)][string]$NewCType,
        [parameter(Mandatory=$true)][string]$outputPath,
        [string]$SmtpServer,
        [string]$EmailFrom,
        [string]$EmailTo
    )

    $site = Get-SPSite $SiteUrl
    # Report variables
    $ctypeNotExist = "NotExist"
    $ctypeExist = "Exist"
    $ctAdded = "True"
    $ctNotAdded = "False"

    # Output file name and path constructor
    $SiteTitle = $site.RootWeb.Title
    $fileName = "_Add_CType.csv"
    $filePath = $outputPath, $SiteTitle, $fileName
    $filePath -join ""

    if ($SmtpServer -gt 1 -and $EmailFrom -gt 3 -and $EmailTo -gt 3)
    {
        # Send begin Email notification
        $date = Get-Date
        [string]$startSubject = "Starting the Add-SPSiteContentType in the site collection - ", $siteTitle
        Send-MailMessage -From $EmailFrom -To $EmailTo -Subject $startSubject -Body $date -SmtpServer $SmtpServer
    }

    # Walk through each site in the site collection
    $site | Get-SPWeb -Limit all | ForEach-Object {

        $outWebTitle = $_.Title
        $outWebURL = $_.URL
        write-host "Checking site:"$_.Title

        # Go through each document library in the site
        $_.Lists | where { $_.BaseTemplate -eq "DocumentLibrary" } | ForEach-Object {

            $outLibTitle = $_.Title
            $outLibRootFolder = $_.RootFolder

            # Check to see if the library contains the content type specified at the start of the script
            if (($_.ContentTypes | where { $_.Name -eq $lookForCT }) -eq $null)
            {
                $outstring = $outWebTitle, $outWebURL, $outLibRootFolder, 
                    $outLibTitle, $lookForCT, $NewCType, $ctypeNotExist, $ctNotAdded
                $outstring -join "," >> $filePath
            }
            else
            {
                # Add site content types to the list
                $ParentContentType = $site.RootWeb.AvailableContentTypes[$NewCType]
                $ctToAdd = New-Object Microsoft.SharePoint.SPContentType -ArgumentList @($ParentContentType, $site.RootWeb.ContentTypes, $NewCType)
                $ct = $_.ContentTypes.Add($ctToAdd)
                $_.Update()

                # Resets the New Menu content drop down button to include all of the libraries content types
                $_.rootfolder.UniqueContentTypeOrder = $null
                $_.rootfolder.Update()

                $outstring = $outWebTitle, $outWebURL, $outLibRootFolder, $outLibTitle, $lookForCT, $NewCType, $ctypeExist, $ctAdded
                $outstring -join "," >> $filePath

                write-host "Content type" $ct.Name "added to list" $_.Title -foregroundcolor Green
            }
        }
    }
    # Dispose of the site object
    $site.Dispose()

    # Export any possible errors captured in the $error varilable to the corresponding error file
    $errorFileName = "_Add_CType_Errors.csv"
    $errorOutput = $outputPath, $SiteTitle, $errorFileName
    $errorOutput -join ""
    $Error >> $errorOutput
    $Error.Clear()

    if ($SmtpServer -gt 1 -and $EmailFrom -gt 3 -and $EmailTo -gt 3)
    {
        # Send Ending Email notification
        $date = Get-Date
        [string]$endSubject = "Finishing the Add-SPSiteContentType in the site collection - ", $siteTitle
        Send-MailMessage -From $EmailFrom -To $EmailTo -Subject $endSubject -Body $date -SmtpServer $SmtpServer
    }
}