Add template for empty sitelet project

[granicz]

It is quite often that one needs an empty sitelet to start from. Usually, I perform the following steps to get there (note how the project names tranfers as namespace in the code files):

1. dotnet new -lang f# -n MyProject

2. dotnet add package WebSharper and dotnet add package WebSharper.AspNetCore

3. Add a simple Site.fs as the first code file in the project, with:

   module Site
   
   open WebSharper
   open WebSharper.Sitelets
   
   [<Website>]
   let Main = Application.Text (fun ctx -> "Hello World!")

4. Merge Program.fs and Startup.fs into a single combined Startup.fs:

   namespace MyProject
   
   open System
   open Microsoft.AspNetCore
   open Microsoft.AspNetCore.Builder
   open Microsoft.AspNetCore.Hosting
   open Microsoft.AspNetCore.Http
   open Microsoft.Extensions.Configuration
   open Microsoft.Extensions.DependencyInjection
   open Microsoft.Extensions.Hosting
   open WebSharper.AspNetCore
   
   type Startup() =
   
       member this.ConfigureServices(services: IServiceCollection) =
           services.AddSitelet(Site.Main)
               .AddAuthentication("WebSharper")
               .AddCookie("WebSharper", fun options -> ())
           |> ignore
   
       member this.Configure(app: IApplicationBuilder, env: IWebHostEnvironment) =
           if env.IsDevelopment() then app.UseDeveloperExceptionPage() |> ignore
   
           app.UseAuthentication()
               .UseStaticFiles()
               .UseWebSharper()
               .Run(fun context ->
                   context.Response.StatusCode <- 404
                   context.Response.WriteAsync("Page not found"))
   
   module Program =
       let BuildWebHost args =
           WebHost
               .CreateDefaultBuilder(args)
               .UseStartup<Startup>()
               .Build()
   
       [<EntryPoint>]
       let main args =
           BuildWebHost(args).Run()
           0

I believe it would be a benefit to make this a dedicated template, say as websharper-min.

[granicz]

And I guess we need the equivalent C# template as well.

[Tarmil]

I think that would be nice to implement as an option on the websharper-web template, rather than yet another template. I did that for Bolero, dotnet new bolero-app creates a full-featured app and dotnet new bolero-app --minimal creates an empty app.

[granicz]

@Tarmil Frankly, I dare not touch the current logic of generating a NuGet+VSIX, or do you see an easy way to add this option? It would indeed be the best way forward, just not sure whether the whole repo needs a rewriting to enable it or not.

[Tarmil]

Hmm, I was only thinking about the dotnet cli template; I don't know how that translates for the VSIX.

[btamas2000]

Closed as solution #33 is merged to ws5