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

using ArcaneLibs.Extensions.Streams;
using Microsoft.AspNetCore.Mvc;
using Spacebar.AdminApi.TestClient.Services.Services;
using Spacebar.Cdn.Extensions;
using Spacebar.Cdn.Services;
using Spacebar.Interop.Cdn.Abstractions;

namespace Spacebar.Cdn.Controllers;

[ApiController]
public class UserController(LruFileCache lfc, IFileSource fs, CdnWorkerService cws) : ControllerBase {
    [HttpGet("/avatars/{userId}/{hash}")]
    [HttpGet("/avatars/{userId}/{hash}.{ext}")]
    public async Task<IActionResult> GetUserAvatar(string userId, string hash, string ext = "webp") {
        DiscordImageResizeParams resizeParams = Request.GetResizeParams();
        var originalKey = fs.BaseUrl + Request.Path;
        var cacheKey = Request.Path + resizeParams.ToSerializedName();
        LruFileCache.Entry? entry;
        if (!Request.Query.Any() || resizeParams.Passthrough) {
            var original = await fs.GetFile(Request.Path);
            entry = new LruFileCache.Entry() {
                Data = original.Stream.ReadToEnd().ToArray(),
                MimeType = original.MimeType
            };
        }
        else
            entry = await lfc.GetOrAdd(cacheKey, async () => {
                var original = await fs.GetFile(Request.Path);
                var res = await cws.GetRawClient("q8").GetAsync("/scale" + Request.Path + Request.QueryString);
                var outStream = await res.Content.ReadAsStreamAsync();

                return new LruFileCache.Entry() {
                    Data = outStream.ReadToEnd().ToArray(),
                    MimeType = res.Content.Headers.ContentType?.ToString() ?? original.MimeType
                };
            });

        // byte array with mime type result
        return new FileContentResult(entry.Data, entry.MimeType);
    }
    // [HttpGet("/banners/{userId}/{hash}.{ext}")]
    // public async Task<IActionResult> GetUserBanner(string userId, string hash, string ext) {
    //     var originalKey = fs.BaseUrl + Request.Path;
    //     var cacheKey = Request.Path + Request.QueryString;
    //
    //     DiscordImageResizeParams resizeParams = 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);
    // }
}