T4 template to generate convention-based names for Owin/Katana middleware

OwinMiddlewareFluentExtensions.tt

<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ output extension=".cs" #>
<#
	var namespace_name = "YOUR_NAMESPACE_HERE";
	var extension_class_name = "EXTENSION_CLASS_NAME_GOES_HERE";

	var middleware = new Dictionary<string,string> {
		{ "WelcomePage", "Microsoft.Owin.Diagnostics" },
		{ "FileServer", "Microsoft.Owin.StaticFiles" }
	};

	var usings = middleware.Values.SelectMany(x => x.Split(';')).Distinct().OrderBy(x => x);
#>
using System;
<# foreach (var u in usings) { #>
using <#=u#>;
<# } #>
using Owin;

namespace <#=namespace_name#>
{
	public static class <#=extension_class_name#>
    {
<#
	foreach (var m in middleware.Keys) {
#>
        public static void Use<#=m#>(this IAppBuilder app, Action<<#=m#>Options> configure)
        {
            var options = new <#=m#>Options();
            configure(options);
            app.Use<#=m#>(options);
        }

<#
	}
#>
    }
}