Implemented basic server file system endpoints and services. Implemented server files tab

MoonlightServers.Daemon/Http/Controllers/Servers/UploadController.cs

@@ -0,0 +1,69 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using MoonCore.Exceptions;
+using MoonCore.Helpers;
+using MoonlightServers.Daemon.Configuration;
+using MoonlightServers.Daemon.Helpers;
+using MoonlightServers.Daemon.Services;
+
+namespace MoonlightServers.Daemon.Http.Controllers.Servers;
+
+[ApiController]
+[AllowAnonymous]
+[Route("api/servers/upload")]
+public class UploadController : Controller
+{
+    private readonly AccessTokenHelper AccessTokenHelper;
+    private readonly AppConfiguration Configuration;
+    private readonly ServerService ServerService;
+
+    public UploadController(
+        AccessTokenHelper accessTokenHelper,
+        ServerService serverService,
+        AppConfiguration configuration
+    )
+    {
+        AccessTokenHelper = accessTokenHelper;
+        ServerService = serverService;
+        Configuration = configuration;
+    }
+
+    [HttpPost]
+    public async Task Upload([FromQuery] string token)
+    {
+        var file = Request.Form.Files.FirstOrDefault();
+
+        if (file == null)
+            throw new HttpApiException("No file provided", 400);
+        
+        if(file.Length > ByteConverter.FromMegaBytes(Configuration.Files.UploadLimit).Bytes)
+            throw new HttpApiException("The provided file is bigger than the upload limit", 400);
+
+        #region Token validation
+
+        if (!AccessTokenHelper.Process(token, out var claims))
+            throw new HttpApiException("Invalid access token provided", 401);
+
+        var typeClaim = claims.FirstOrDefault(x => x.Type == "type");
+
+        if (typeClaim == null || typeClaim.Value != "upload")
+            throw new HttpApiException("Invalid access token provided: Missing or invalid type", 401);
+
+        var serverIdClaim = claims.FirstOrDefault(x => x.Type == "serverId");
+
+        if (serverIdClaim == null || !int.TryParse(serverIdClaim.Value, out var serverId))
+            throw new HttpApiException("Invalid access token provided: Missing or invalid server id", 401);
+
+        #endregion
+
+        var server = ServerService.GetServer(serverId);
+
+        if (server == null)
+            throw new HttpApiException("No server with this id found", 404);
+
+        var dataStream = file.OpenReadStream();
+        var path = file.FileName;
+
+        await server.FileSystem.Create(path, dataStream);
+    }
+}