0776a50cbe
This commit aims to improve readability of MVC controllers & actions. The main change is the switch to custom [ProducesResults] and [ProducesErrors] attributes.
132 lines
No EOL
5.2 KiB
C#
132 lines
No EOL
5.2 KiB
C#
using System.IO.Hashing;
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using System.Net;
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using System.Net.Mime;
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using System.Text;
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using Iceshrimp.Backend.Controllers.Shared.Attributes;
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using Microsoft.AspNetCore.Cors;
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using Microsoft.AspNetCore.Mvc;
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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.Drawing.Processing;
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using SixLabors.ImageSharp.PixelFormats;
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using SixLabors.ImageSharp.Processing;
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namespace Iceshrimp.Backend.Controllers.Web;
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[ApiController]
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[EnableCors("drive")]
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[Route("/identicon/{id}")]
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[Route("/identicon/{id}.png")]
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[Produces(MediaTypeNames.Image.Png)]
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public class IdenticonController : ControllerBase
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{
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[HttpGet]
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[ProducesResults(HttpStatusCode.OK)]
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public async Task GetIdenticon(string id)
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{
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using var image = new Image<Rgb24>(Size, Size);
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var random = new Random((int)XxHash32.HashToUInt32(Encoding.UTF8.GetBytes(id)));
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var color = Colors[random.Next(0, Colors.Count - 1)];
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var gradient = new LinearGradientBrush(new Point(0, 0), new Point(Size, Size), GradientRepetitionMode.None,
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new ColorStop(0, color.start), new ColorStop(1, color.end));
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image.Mutate(p => p.Fill(gradient));
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var paint = new SolidBrush(Color.White);
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var side = new bool[SideN, CellCount];
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var center = new bool[CellCount];
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for (var i = 0; i < SideN; i++)
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{
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for (var j = 0; j < CellCount; j++)
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{
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side[i, j] = random.Next(3) == 0;
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}
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}
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for (var i = 0; i < CellCount; i++)
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{
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center[i] = random.Next(3) == 0;
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}
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for (var i = 0; i < CellCount; i++)
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{
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for (var j = 0; j < CellCount; j++)
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{
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var isXCenter = i == (CellCount - 1) / 2;
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if (isXCenter && !center[j])
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continue;
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var isLeftSide = i < (CellCount - 1) / 2;
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if (isLeftSide && !side[i, j])
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continue;
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var isRightSide = i > (CellCount - 1) / 2;
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if (isRightSide && !side[SideN - (i - SideN), j])
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continue;
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var actualX = Margin + CellSize * i;
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var actualY = Margin + CellSize * j;
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image.Mutate(p => p.Fill(paint, new Rectangle(actualX, actualY, CellSize, CellSize)));
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}
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}
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Response.Headers.CacheControl = "max-age=31536000, immutable";
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Response.Headers.ContentType = "image/png";
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await image.SaveAsPngAsync(Response.Body);
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}
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#region Color definitions & Constants
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private const int Size = 160;
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private const int Margin = Size / 4;
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private const int CellCount = 5;
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private const int CellCanvasSize = Size - Margin * 2;
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private const int CellSize = CellCanvasSize / CellCount;
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private const int SideN = CellCount / 2;
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private static readonly List<(Color start, Color end)> Colors =
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[
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(new Color(new Rgb24(235, 111, 146)), new Color(new Rgb24(180, 99, 122))),
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(new Color(new Rgb24(246, 193, 119)), new Color(new Rgb24(234, 157, 52))),
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(new Color(new Rgb24(235, 188, 186)), new Color(new Rgb24(215, 130, 126))),
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(new Color(new Rgb24(156, 207, 216)), new Color(new Rgb24(86, 148, 159))),
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(new Color(new Rgb24(196, 167, 231)), new Color(new Rgb24(144, 122, 169))),
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(new Color(new Rgb24(235, 111, 146)), new Color(new Rgb24(246, 193, 119))),
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(new Color(new Rgb24(235, 111, 146)), new Color(new Rgb24(235, 188, 186))),
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(new Color(new Rgb24(235, 111, 146)), new Color(new Rgb24(49, 116, 143))),
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(new Color(new Rgb24(235, 111, 146)), new Color(new Rgb24(156, 207, 216))),
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(new Color(new Rgb24(235, 111, 146)), new Color(new Rgb24(196, 167, 231))),
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(new Color(new Rgb24(246, 193, 119)), new Color(new Rgb24(235, 111, 146))),
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(new Color(new Rgb24(246, 193, 119)), new Color(new Rgb24(235, 188, 186))),
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(new Color(new Rgb24(246, 193, 119)), new Color(new Rgb24(49, 116, 143))),
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(new Color(new Rgb24(246, 193, 119)), new Color(new Rgb24(156, 207, 216))),
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(new Color(new Rgb24(246, 193, 119)), new Color(new Rgb24(196, 167, 231))),
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(new Color(new Rgb24(235, 188, 186)), new Color(new Rgb24(235, 111, 146))),
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(new Color(new Rgb24(235, 188, 186)), new Color(new Rgb24(246, 193, 119))),
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(new Color(new Rgb24(235, 188, 186)), new Color(new Rgb24(49, 116, 143))),
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(new Color(new Rgb24(235, 188, 186)), new Color(new Rgb24(156, 207, 216))),
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(new Color(new Rgb24(235, 188, 186)), new Color(new Rgb24(196, 167, 231))),
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(new Color(new Rgb24(49, 116, 143)), new Color(new Rgb24(235, 111, 146))),
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(new Color(new Rgb24(49, 116, 143)), new Color(new Rgb24(246, 193, 119))),
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(new Color(new Rgb24(49, 116, 143)), new Color(new Rgb24(235, 188, 186))),
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(new Color(new Rgb24(49, 116, 143)), new Color(new Rgb24(156, 207, 216))),
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(new Color(new Rgb24(49, 116, 143)), new Color(new Rgb24(196, 167, 231))),
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(new Color(new Rgb24(156, 207, 216)), new Color(new Rgb24(235, 111, 146))),
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(new Color(new Rgb24(156, 207, 216)), new Color(new Rgb24(246, 193, 119))),
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(new Color(new Rgb24(156, 207, 216)), new Color(new Rgb24(235, 188, 186))),
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(new Color(new Rgb24(156, 207, 216)), new Color(new Rgb24(49, 116, 143))),
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(new Color(new Rgb24(156, 207, 216)), new Color(new Rgb24(196, 167, 231))),
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(new Color(new Rgb24(196, 167, 231)), new Color(new Rgb24(235, 111, 146))),
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(new Color(new Rgb24(196, 167, 231)), new Color(new Rgb24(246, 193, 119))),
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(new Color(new Rgb24(196, 167, 231)), new Color(new Rgb24(235, 188, 186))),
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(new Color(new Rgb24(196, 167, 231)), new Color(new Rgb24(49, 116, 143))),
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(new Color(new Rgb24(196, 167, 231)), new Color(new Rgb24(156, 207, 216)))
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];
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#endregion
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} |