server/extra/admin-api/Spacebar.Cdn/Controllers/GetImageController.cs

// using ArcaneLibs.Extensions.Streams;
// using Microsoft.AspNetCore.Mvc;
// using Spacebar.AdminApi.TestClient.Services.Services;
// using Spacebar.Cdn.Extensions;
// using Spacebar.Interop.Cdn.Abstractions;
//
// namespace Spacebar.Cdn.Controllers;
//
// [ApiController]
// public class GetImageController(LruFileCache lfc, IFileSource fs, DiscordImageResizeService dirs) : ImageController {
//     [HttpGet("/emojis/{emoji_id:required}.{ext:required}")]
//     [HttpGet("/stickers/{sticker_id:required}.{ext:required}")]
//     [HttpGet("/banners/{user_id:required}/{user_banner:required}.{ext:required}")]
//     public async Task<IActionResult> GetImage(string? ext) {
//         var originalKey = fs.BaseUrl + Request.Path;
//         var cacheKey = Request.Path + Request.QueryString;
//
//         DiscordImageResizeParams resizeParams = Request.GetResizeParams();
//
//         var entry = await lfc.GetOrAdd(cacheKey, async () => {
//             var original = await fs.GetFile(Request.Path);
//
//             if (Request.Query.Any()) {
//                 using var img = await original.ToMagickImageCollectionAsync();
//                 dirs.Apply(img, resizeParams);
//                 
//                 var outStream = new MemoryStream();
//                 await img.WriteAsync(outStream, img.First().Format);
//                 outStream.Position = 0;
//
//                 return new LruFileCache.Entry() {
//                     Data = outStream.ReadToEnd().ToArray(),
//                     MimeType = original.MimeType
//                 };
//             }
//
//             return new LruFileCache.Entry() {
//                 Data = original.Stream.ReadToEnd().ToArray(),
//                 MimeType = original.MimeType
//             };
//         });
//
//         // byte array with mime type result
//         return new FileContentResult(entry.Data, entry.MimeType);
//     }
//
//     // TODO: is message_id required? Can't tell from discord.food: /attachments/{channel_id}/[{message_id]/attachment_id}/{attachment_filename}
//     [HttpGet("/attachments/{channel_id:required}/{message_id:required}/{attachment_id:required}/{filename:required}")]
//     [HttpGet("/ephemeral-attachments/{application_id:required}/{attachment_id:required}/{attachment_filename:required}")]
//     public async Task<IActionResult> GetAttachmentImage() {
//         // TODO: url signing, file type checks
//         return await GetImage("");
//     }
// }