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56 lines
1.9 KiB
56 lines
1.9 KiB
using System.Text;
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using Exsersewo.Common.Utilities;
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using ImageMagick;
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using Kynareth.Models;
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namespace Kynareth.Managers;
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public static partial class ImageManager
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{
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private static List<ImageManipulationImage> ManipulationEndpoints;
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private static string ManipulationTemplateBaseFolder;
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static void ConfigureManipulation(IConfiguration configuration, IWebHostEnvironment _appEnvironment)
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{
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ManipulationTemplateBaseFolder = Path.Combine(_appEnvironment.WebRootPath, configuration.GetValue<string>("ImageManipulation:Folder"));
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ManipulationEndpoints = configuration.GetSection("ImageManipulation:Templates").Get<List<ImageManipulationImage>>();
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}
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public static async Task<object> GenerateMemeImageAsync(string template, string[] texts)
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{
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ImageManipulationImage imageTemplate = ManipulationEndpoints.FirstOrDefault(e => e.Name.ToLowerInvariant().Equals(template.ToLowerInvariant()));
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if (imageTemplate is null)
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{
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var ex = new ArgumentException($"Couldn't find endpoint named \"{template}\"", nameof(template));
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return GetResult(StatusCodes.Status404NotFound, EventResult.FromFailureException(ex.Message, ex));
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}
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if (imageTemplate.TextPositions.Count > texts.Length)
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{
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var ex = new ArgumentException("Not enough texts provided", nameof(texts));
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return GetResult(StatusCodes.Status400BadRequest, EventResult.FromFailureException(ex.Message, ex));
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}
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string image = Path.Combine(ManipulationTemplateBaseFolder, imageTemplate.Image);
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using MagickImage templateImage = new(File.ReadAllBytes(image));
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using MagickImage baseImage = new(MagickColors.Transparent, templateImage.Width, templateImage.Height);
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baseImage.Format = MagickFormat.Png;
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baseImage.Composite(templateImage, CompositeOperator.Over);
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int textPoint = 0;
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foreach (var textArea in imageTemplate.TextPositions)
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{
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baseImage.WriteText(texts[textPoint], textArea, MagickColors.White, Encoding.Unicode);
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textPoint++;
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}
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return baseImage.ToByteArray();
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}
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} |