DTLib/DTLib.Web/Routes/ServeFilesRouteHandler.cs

40 lines
1.5 KiB
C#

namespace DTLib.Web.Routes;
public class ServeFilesRouteHandler(IOPath _publicDir, string _homePageUrl = "index.html") : IRouteHandler
{
public async Task<HttpStatusCode> HandleRequest(HttpListenerContext ctx)
{
if (ctx.Request.HttpMethod != "GET")
return HttpStatusCode.BadRequest;
string requestPath = ctx.Request.Url?.AbsolutePath!;
if (string.IsNullOrEmpty(requestPath) || requestPath == "/")
{
requestPath = _homePageUrl;
}
string ext = Path.Extension(requestPath).Str;
IOPath filePath = Path.Concat(_publicDir, requestPath);
if (!File.Exists(filePath))
return HttpStatusCode.NotFound;
List<(string key, string val)> headers = ext switch
{
"html" => [("Content-Type", "text/html")],
"css" => [("Content-Type", "text/css")],
"js" or "jsx" or "ts" or "tsx" or "map" => [("Content-Type", "text/javascript")],
_ =>
[
("Content-Type", "binary/octet-stream"),
("Content-Disposition", $"attachment filename={filePath.LastName()}")
]
};
foreach (var header in headers)
ctx.Response.Headers.Set(header.key, header.val);
var fileStream = File.OpenRead(filePath);
ctx.Response.ContentLength64 = fileStream.Length;
await fileStream.CopyToAsync(ctx.Response.OutputStream);
return HttpStatusCode.OK;
}
}