Radicade/Server/CDN/DataCDN.cs

using Microsoft.AspNetCore.Mvc;
using SixLabors.ImageSharp;

namespace RadicadeServer.CDN
{
	[Route("cdn/data/")]
	[Route("data/")]
	public class DataCDN : Controller
	{


		[HttpGet]
		public IActionResult Index()
		{
			try
			{
				using var entries = Directory.EnumerateFileSystemEntries(DBConfig.CDNStorage).GetEnumerator();
				_ = entries.MoveNext();
				return Ok(new { service = "data", status = "ok" });
			}
			catch
			{
				return StatusCode(StatusCodes.Status503ServiceUnavailable,
					new { service = "data", status = "DATA_STORAGE_UNAVAILABLE" });
			}
		}

		[HttpGet("{datablob}")]
		public IActionResult GetDataBlob(string datablob)
		{
			if (!CdnStorageNames.IsServable(datablob)) return BadRequest();

			// This is the URL the client's bundle downloader ranges over, so the name has to be
			// one that may be served at all and it may arrive with or without the .assetbundle
			// suffix the import appends.
			var name = CdnStorageNames.Resolve(datablob);
			if (name == null) return NotFound();

			CdnCaching.Apply(this, CdnCaching.ForBlob(name));

			return PhysicalFile(Path.Join(DBConfig.CDNStorage, name), "application/octet-stream", enableRangeProcessing: true);
		}
	}
}