api/WhatApi/Endpoints/DownloadContentEndpoint.cs


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namespace WhatApi.Endpoints;

public class DownloadContentEndpoint : BaseEndpoint
{
    [HttpGet("~/{id:guid}")]
    public async Task<ActionResult> HandleAsync(Guid id, CancellationToken ct = default) {
        try {
            var path = Path.Combine(Directory.GetCurrentDirectory(), "files", id.ToString());
            await using var file = new FileStream(path, FileMode.Open);
            if (!file.CanRead) return NotFound();
            return File(file, "application/octet-stream", id.ToString());
        } catch (Exception e) {
            if (e is not FileNotFoundException) Console.WriteLine(e);
            return NotFound();
        }
    }
}