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CLIExtension.cs
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CLIExtension.cs
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using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.FileProviders;
using Microsoft.Extensions.FileProviders.Physical;
using System;
using System.IO;
using System.IO.Pipelines;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
namespace NetCore2Blockly
{
/// <summary>
/// extension to register to the startup
/// </summary>
public static class CLIExtension
{
static CLIExtension()
{
var assName = Assembly.GetExecutingAssembly().GetName();
Console.WriteLine($"{assName.Name} version:{assName.Version.ToString()}");
}
/// <summary>
/// Adds the blockly to startup
/// </summary>
/// <param name="serviceCollection">The service collection.</param>
/// <returns></returns>
public static IServiceCollection AddBlockly(this IServiceCollection serviceCollection)
{
serviceCollection.AddSingleton<GenerateBlocklyFilesHostedService>();
serviceCollection.AddHostedService(p => p.GetService<GenerateBlocklyFilesHostedService>());
return serviceCollection;
}
/// <summary>
/// use blockly
/// </summary>
/// <param name="app"></param>
/// <returns></returns>
public static IApplicationBuilder UseBlockly(this IApplicationBuilder app)
{
MapJS(app, "/blocklyDefinitions", b => b.BlocklyTypesDefinition);
MapJS(app, "/BlocklyToolBoxValueDefinitions", b => b.BlocklyToolBoxValueDefinition);
MapJS(app, "/blocklyAPIFunctions", b => b.BlocklyAPIFunctions);
MapJS(app, "/BlocklyToolBoxFunctionDefinitions", b => b.BlocklyToolBoxFunctionDefinition);
return app;
}
private static void MapJS(IApplicationBuilder app, string url,Func<GenerateBlocklyFilesHostedService,string> content)
{
app.Map(url, app =>
{
var blocklyFilesHostedService = app.ApplicationServices
.GetService<GenerateBlocklyFilesHostedService>();
app.Run(async context =>
{
await GetBlocklyFilesHostedServices(context, content(blocklyFilesHostedService));
});
});
}
private static async Task GetBlocklyFilesHostedServices(HttpContext context, string blocklyDefinitions)
{
if (blocklyDefinitions == null)
{
throw new Exception("blocklyDefinitions is null");
}
var mem = new Memory<byte>(Encoding.UTF8.GetBytes(blocklyDefinitions));
await context.Response.BodyWriter.WriteAsync(mem);
}
private static void mapFile(string dirName, IFileProvider provider, IApplicationBuilder appBuilder)
{
var folder = provider.GetDirectoryContents(dirName);
foreach (var item in folder)
{
if (item.IsDirectory)
{
mapFile(dirName +"/" + item.Name,provider, appBuilder);
continue;
}
string map = (dirName + "/" + item.Name).Substring("blocklyFiles".Length);
appBuilder.Map(map, app =>
{
var f = item;
app.Run(async cnt =>
{
//TODO: find from extension
//cnt.Response.ContentType = "text/html";
using var stream = new MemoryStream();
using var cs = f.CreateReadStream();
byte[] buffer = new byte[2048]; // read in chunks of 2KB
int bytesRead;
while ((bytesRead = cs.Read(buffer, 0, buffer.Length)) > 0)
{
stream.Write(buffer, 0, bytesRead);
}
byte[] result = stream.ToArray();
// TODO: do something with the result
var m = new Memory<byte>(result);
await cnt.Response.BodyWriter.WriteAsync(m);
});
});
}
}
/// <summary>
/// Uses the cli.
/// </summary>
/// <param name="appBuilder">The application builder.</param>
public static void UseBlocklyUI(this IApplicationBuilder appBuilder)
{
var manifestEmbeddedProvider =
new ManifestEmbeddedFileProvider(Assembly.GetExecutingAssembly());
mapFile("blocklyFiles", manifestEmbeddedProvider, appBuilder);
//use local storage default
mapStorage(appBuilder);
}
/// <summary>
/// Uses the storage
/// </summary>
/// <param name="appBuilder">The application builder.</param>
public static void UseStorage(this IApplicationBuilder appBuilder)
{
mapStorage(appBuilder);
}
private static void mapStorage(IApplicationBuilder appBuilder)
{
var manifestEmbeddedProvider =
new ManifestEmbeddedFileProvider(Assembly.GetExecutingAssembly());
appBuilder.Map("/blocklyStorage", app =>
{
app.Run(async cnt=>
{
string nameFile = "extensions/SaveToLocalStorage.js";
IFileInfo f = new PhysicalFileInfo(new FileInfo("wwwroot/"+nameFile));
if (!f.Exists)
{
f = manifestEmbeddedProvider.GetFileInfo("blocklyFiles/"+nameFile);
}
//TODO: add corect mime type for js files
using var stream = new MemoryStream();
using var cs = f.CreateReadStream();
byte[] buffer = new byte[2048]; // read in chunks of 2KB
int bytesRead;
while ((bytesRead = cs.Read(buffer, 0, buffer.Length)) > 0)
{
stream.Write(buffer, 0, bytesRead);
}
byte[] result = stream.ToArray();
// TODO: do something with the result
var m = new Memory<byte>(result);
await cnt.Response.BodyWriter.WriteAsync(m);
});
});
}
}
}