Static FrontEnd (Angular, React, ...): New FileSystemProvider

[maarlo]

If serving both backend and frontend in the same server and creating the frontend with a javascript framework (like React), serving only the static files in basepath is not enough when the frontend has its own routing.

The server must serve static index.html file for all the unknown routes and files.

As solution, I propose modifying FileSystemProvider adding

1. A readonly string set at constructor with the default document name (_defaultDocumentName)
2. Modify the constructor to set that string
3. Modify MapUrlPath return with

return !localPath.StartsWith(FileSystemPath, StringComparison.Ordinal) ? null
                : File.Exists(localPath) ? GetMappedFileInfo(mimeTypeProvider, localPath)
                : Directory.Exists(localPath) ? GetMappedDirectoryInfo(localPath)
                : GetMappedFileInfo(mimeTypeProvider, Path.Combine(FileSystemPath, _defaultDocumentName.Replace('/', Path.DirectorySeparatorChar)));

Instead of

return !localPath.StartsWith(FileSystemPath, StringComparison.Ordinal) ? null
                : File.Exists(localPath) ? GetMappedFileInfo(mimeTypeProvider, localPath)
                : Directory.Exists(localPath) ? GetMappedDirectoryInfo(localPath)
                : null;

To serve the files it's enough with adding

new WebServer(webServerOptions)
  ...
  .WithModule(new FileModule("/", new FrontendSystemProvider(HtmlRootPath, [defaultDocumentName, isImmutable])).WithContentCaching(UseFileCache));

What do you think about?

[rdeago]

Hello @maarlo, thanks for using EmbedIO!

Although I surely appreciate the effort you put in identifying the issue and providing a possible solution, I'm closing this issue for the following reasons:

1. this is a duplicate of #490
2. modifying FileSystemProvider will not solve the problem for people using other providers, e.g. ZipFileProvider, to store frontend files.

Please take a look at the solution proposed in #490 and tell us what you think.

[maarlo]

Hello @rdeago, thanks for your fast repply!

Yes, #490 is a better solution.