implement media serving

AobaServer/Controllers/MediaController.cs

@@ -1,27 +1,44 @@
 using AobaCore;
 
+using HeyRed.Mime;
+
 using Microsoft.AspNetCore.Mvc;
 
 using MongoDB.Bson;
 using MongoDB.Driver;
 
-namespace AobaV2.Controllers;
+namespace AobaServer.Controllers;
 
 [Route("/m")]
-public class MediaController(MediaService media) : Controller
+public class MediaController(MediaService mediaService, ILogger<MediaController> logger) : Controller
 {
 	[HttpGet("{id}")]
-	public IActionResult Media(ObjectId id)
+	[ResponseCache(Duration = int.MaxValue)]
+	public async Task<IActionResult> MediaAsync(ObjectId id)
 	{
-		return View();
+		var file = await mediaService.GetMediaStreamAsync(id);
+		if (file.HasError)
+		{
+			logger.LogError(file.Error.Exception, "Failed to load media stream");
+			return NotFound();
+		}
+		var mime = MimeTypesMap.GetMimeType(file.Value.FileInfo.Filename);
+		return File(file, mime, true);
 	}
 
+	/// <summary>
+	/// Redirect legacy media urls to the new url
+	/// </summary>
+	/// <param name="id"></param>
+	/// <param name="rest"></param>
+	/// <param name="aoba"></param>
+	/// <returns></returns>
 	[HttpGet("/i/{id}/{*rest}")]
 	public async Task<IActionResult> LegacyRedirectAsync(ObjectId id, string rest, [FromServices] AobaService aoba)
 	{
 		var media = await aoba.GetMediaAsync(id);
 		if (media == null)
 			return NotFound();
-		return LocalRedirectPermanent($"/m/{media.Id}/{rest}");
+		return LocalRedirectPermanent($"/m/{media.MediaId}/{rest}");
 	}
 }