functions/SPClientContentType/Remove-SPClientContentType.ps1

#Requires -Version 3.0

# Remove-SPClientContentType.ps1
#
# Copyright (c) 2017 karamem0
#
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# SOFTWARE.

function Remove-SPClientContentType {

<#
.SYNOPSIS
  Deletes a content type.
.PARAMETER ClientContext
  Indicates the client context.
  If not specified, uses default context.
.PARAMETER ClientObject
  Indicates the content type to delete.
.PARAMETER ParentWeb
  Indicates the web which the content type is contained.
.PARAMETER Identity
  Indicates the content type ID.
.PARAMETER Name
  Indicates the content type name.
#>


    [CmdletBinding(DefaultParameterSetName = 'ClientObject')]
    param (
        [Parameter(Mandatory = $false)]
        [Microsoft.SharePoint.Client.ClientContext]
        $ClientContext = $SPClient.ClientContext,
        [Parameter(Mandatory = $true, ValueFromPipeline = $true, ParameterSetName = 'ClientObject')]
        [Microsoft.SharePoint.Client.ContentType]
        $ClientObject,
        [Parameter(Mandatory = $true, ValueFromPipeline = $true, ParameterSetName = 'Identity')]
        [Parameter(Mandatory = $true, ValueFromPipeline = $true, ParameterSetName = 'Name')]
        [Microsoft.SharePoint.Client.Web]
        $ParentWeb,
        [Parameter(Mandatory = $true, ParameterSetName = 'Identity')]
        [Alias('Id')]
        [string]
        $Identity,
        [Parameter(Mandatory = $true, ParameterSetName = 'Name')]
        [string]
        $Name
    )

    process {
        if ($ClientContext -eq $null) {
            throw "Cannot bind argument to parameter 'ClientContext' because it is null."
        }
        if ($PSCmdlet.ParameterSetName -eq 'ClientObject') {
            if (-not $ClientObject.IsPropertyAvailable('Id')) {
                Invoke-SPClientLoadQuery `
                    -ClientContext $ClientContext `
                    -ClientObject $ClientObject `
                    -Retrievals 'Id'
            }
        } else {
            $ClientObjectCollection = $ParentWeb.ContentTypes
            if ($PSCmdlet.ParameterSetName -eq 'Identity') {
                $PathMethod = New-Object Microsoft.SharePoint.Client.ObjectPathMethod( `
                    $ClientContext, `
                    $ClientObjectCollection.Path, `
                    'GetById', `
                    [object[]]$Identity)
                $ClientObject = New-Object Microsoft.SharePoint.Client.ContentType($ClientContext, $PathMethod)
                Invoke-SPClientLoadQuery `
                    -ClientContext $ClientContext `
                    -ClientObject $ClientObject `
                    -Retrievals 'Id'
                if ($ClientObject.Id -eq $null) {
                    throw 'The specified content type could not be found.'
                }
            }
            if ($PSCmdlet.ParameterSetName -eq 'Name') {
                Invoke-SPClientLoadQuery `
                    -ClientContext $ClientContext `
                    -ClientObject $ClientObjectCollection `
                    -Retrievals 'Include(Id,Name)'
                $ClientObject = $ClientObjectCollection | Where-Object { $_.Name -eq $Name }
                if ($ClientObject -eq $null) {
                    throw 'The specified content type could not be found.'
                }
            }
        }
        $ClientObject.DeleteObject()
        $ClientContext.ExecuteQuery()
    }

}