# encoding: ascii
# api: powershell
# title: PS2WCF
# description: Call WCF Services with PowerShell using any binding. Generates proxy on the fly without needing any tool expect .NET 3.5. You can also discover the service endpoints, bindings and contracts. Read more on my blog: http://www.ilovesharepoint.com/2008/12/call-wcf-services-with-powershell.html
# version: 1.1
# type: function
# author: Alexey
# license: CC0
# x-poshcode-id: 3224
# x-derived-from-id: 3228
# x-archived: 2016-04-29T02:19:17
# x-published: 2012-02-10T21:45:00
#
# Rewritten to use PowerShell 2.0.
#
<#  
.SYNOPSIS  
	Functions to call WCF Services With PowerShell.
.NOTES
	Version 1.1 10.02.2012
	Requires Powershell v2 and .NET 3.5

	Original version by Christian Glessner
	Blog: http://www.iLoveSharePoint.com
	Twitter: http://twitter.com/cglessner
	Codeplex: http://codeplex.com/iLoveSharePoint
	
	PowerShell v2.0 modification by Justin Dearing
	Blog: http://justaprogrammer.net
	Twitter: http://twitter.com/zippy1981 
.LINK  
	Blog describing original version: http://www.ilovesharepoint.com/2008/12/call-wcf-services-with-powershell.html
	Posted to PoshCode.org http://poshcode.org/?lang=&q=PS2WCF
#>

# load WCF assemblies
Add-Type -AssemblyName "System.ServiceModel"
Add-Type -AssemblyName "System.Runtime.Serialization"

<#  
.SYNOPSIS  
	Get metadata of a service

.DESCRIPTION  
	Parses a wsdl or mex and generates a WsdlImporter object from it.
.EXAMPLE
	Get-WsdlImporter 'http://localhost.fiddler:14232/EchoService.svc/mex'
.EXAMPLE
	Get-WsdlImporter 'http://localhost.fiddler:14232/EchoService.svc' -HttpGet
.EXAMPLE
	Get-WsdlImporter 'http://localhost.fiddler:14232/EchoService.svc?wsdl' -HttpGet 

#>
function global:Get-WsdlImporter([Parameter(Mandatory=$true, ValueFromPipeline=$true)][string]$wsdlUrl, [switch]$httpGet)
{
	if($httpGet -eq $true)
	{
		$local:mode = [System.ServiceModel.Description.MetadataExchangeClientMode]::HttpGet
	}
	else
	{
		$local:mode = [System.ServiceModel.Description.MetadataExchangeClientMode]::MetadataExchange
	}
	
	$mexClient = New-Object System.ServiceModel.Description.MetadataExchangeClient((New-Object System.Uri($wsdlUrl)),$mode)
	$mexClient.MaximumResolvedReferences = [System.Int32]::MaxValue
	$metadataSet = $mexClient.GetMetadata()
	$wsdlImporter = New-Object System.ServiceModel.Description.WsdlImporter($metadataSet)
	
	return $wsdlImporter	
}

<#  
.SYNOPSIS  
    Generate wcf proxy types

.DESCRIPTION  
    Examines a web services meta data (wsdl or mex) and generates the types for the client proxy, 
	as well as request and response contracts.
.EXAMPLE  
    $proxyType = Get-WcfProxyType $wsdlImporter
	$endpoints = $wsdlImporter.ImportAllEndpoints();
	$proxy = New-Object $proxyType($endpoints[0].Binding, $endpoints[0].Address);
#>
function global:Get-WcfProxyType(
	[Parameter(ParameterSetName='WsdlImporter', Position=0, Mandatory=$true, ValueFromPipeline=$true)][ServiceModel.Description.WsdlImporter] $wsdlImporter,
	[Parameter(ParameterSetName='WsdlUrl', Position=0, Mandatory=$true, ValueFromPipeline=$true)][string] $wsdlUrl, 
	[string] $proxyPath
) {
	switch ($PsCmdlet.ParameterSetName)
	{
		"WsdlUrl" {
			$wsdlImporter = Get-WsdlImporter -wsdlUrl $wsdlUrl
			trap [Exception]
			{
				$script:wsdlImporter = Get-WsdlImporter -wsdlUrl $wsdlUrl -httpGet $true
				continue
			}
			break
		}
		"WsdlImporter" { break }
	}
	
	$generator = new-object System.ServiceModel.Description.ServiceContractGenerator
	
	foreach($contractDescription in $wsdlImporter.ImportAllContracts())
	{
		[void]$generator.GenerateServiceContractType($contractDescription)
	}
	
	$parameters = New-Object System.CodeDom.Compiler.CompilerParameters
	if($proxyPath -eq $null)
	{
		$parameters.GenerateInMemory = $true
	}
	else
	{
		$parameters.OutputAssembly = $proxyPath
	}
	
	$providerOptions = New-Object "Collections.Generic.Dictionary[String,String]"
	[void]$providerOptions.Add("CompilerVersion","v3.5")
	
	$compiler = New-Object Microsoft.CSharp.CSharpCodeProvider($providerOptions)
	$result = $compiler.CompileAssemblyFromDom($parameters, $generator.TargetCompileUnit);
	
	if($result.Errors.Count -gt 0)
	{
		throw "Proxy generation failed"       
	}
	
	foreach($type in $result.CompiledAssembly.GetTypes())
	{
		if($type.BaseType.IsGenericType)
		{
			if($type.BaseType.GetGenericTypeDefinition().FullName -eq "System.ServiceModel.ClientBase``1" )
			{
				return $type
			}
		}
	}
}

<#  
.SYNOPSIS  
    Generate wcf proxy

.DESCRIPTION  
    Generate wcf proxy in a manner similar to a Get-WebServiceProxy
.EXAMPLE
    $proxy = Get-WcfProxy 'http://localhost.fiddler:14232/EchoService.svc/mex'
	$proxy.Echo("Justin Dearing");
#>
function global:Get-WcfProxy(
	[Parameter(ParameterSetName='WsdlImporter', Position=0, Mandatory=$true, ValueFromPipeline=$true)][ServiceModel.Description.WsdlImporter] $wsdlImporter,
	[Parameter(ParameterSetName='WsdlUrl', Position=0, Mandatory=$true, ValueFromPipeline=$true)][string] $wsdlUrl, 
	[string] $proxyPath
) {
	switch ($PsCmdlet.ParameterSetName)
	{
		"WsdlUrl" {
			$wsdlImporter = Get-WsdlImporter -wsdlUrl $wsdlUrl
			trap [Exception]
			{
				$script:wsdlImporter = Get-WsdlImporter -wsdlUrl $wsdlUrl -httpGet $true
				continue
			}
			break
		}
	}
  $proxyType = Get-WcfProxyType $wsdlImporter

  $endpoints = $wsdlImporter.ImportAllEndpoints();
  return New-Object $proxyType($endpoints[0].Binding, $endpoints[0].Address);
}
