refactor: 统一命名空间为Foxel.Api，移除不必要的using语句，优化代码结构

Utils/AiHelper.cs

@@ -1,5 +1,3 @@
-using Microsoft.Extensions.Logging;
-
 namespace Foxel.Utils;
 
 public static class AiHelper
@@ -10,17 +8,15 @@ public static class AiHelper
     /// <param name="aiResponse">AI生成的响应文本</param>
     /// <param name="logger">日志记录器</param>
     /// <returns>包含标题和描述的元组</returns>
-    public static (string title, string description) ExtractTitleAndDescription(string aiResponse, ILogger? logger = null)
+    public static (string title, string description) ExtractTitleAndDescription(string aiResponse,
+        ILogger? logger = null)
     {
         string title = "AI生成的标题";
         string description = "AI生成的描述";
-
         try
         {
-            // 尝试解析JSON响应
             if (aiResponse.Contains("{") && aiResponse.Contains("}"))
             {
-                // 提取JSON部分
                 int jsonStartIndex = aiResponse.IndexOf('{');
                 int jsonEndIndex = aiResponse.LastIndexOf('}') + 1;
 
@@ -34,7 +30,8 @@ public static class AiHelper
 
                     try
                     {
-                        var result = System.Text.Json.JsonSerializer.Deserialize<ImageAnalysisResult>(jsonPart, options);
+                        var result =
+                            System.Text.Json.JsonSerializer.Deserialize<ImageAnalysisResult>(jsonPart, options);
                         if (result != null)
                         {
                             if (!string.IsNullOrWhiteSpace(result.Title))
@@ -93,15 +90,14 @@ public static class AiHelper
         return (title, description);
     }
 
-    // 用于解析JSON的类
     public class ImageAnalysisResult
     {
-        public string Title { get; set; } = string.Empty;
-        public string Description { get; set; } = string.Empty;
+        public string Title { get; init; } = string.Empty;
+        public string Description { get; init; } = string.Empty;
     }
 
     public class TagsResult
     {
-        public string[] Tags { get; set; } = Array.Empty<string>();
+        public string[] Tags { get; init; } = [];
     }
-}
+}

Utils/ImageHelper.cs

@@ -4,7 +4,6 @@ using SixLabors.ImageSharp.Metadata.Profiles.Exif;
 using System.Globalization;
 using Foxel.Models;
 using Foxel.Models.Enums;
-using SixLabors.ImageSharp.PixelFormats;
 
 namespace Foxel.Utils;
 
@@ -13,21 +12,6 @@ namespace Foxel.Utils;
 /// </summary>
 public static class ImageHelper
 {
-    /// <summary>
-    /// 获取完整URL路径
-    /// </summary>
-    /// <param name="serverUrl">服务器URL</param>
-    /// <param name="relativePath">相对路径</param>
-    /// <returns>完整URL路径</returns>
-    public static string GetFullPath(string serverUrl, string relativePath)
-    {
-        if (string.IsNullOrEmpty(relativePath))
-            return string.Empty;
-        if (relativePath.StartsWith("https://"))
-            return relativePath;
-        return $"{serverUrl.TrimEnd('/')}{relativePath}";
-    }
-
     /// <summary>
     /// 创建缩略图
     /// </summary>
@@ -76,58 +60,6 @@ public static class ImageHelper
         return thumbnailFileInfo.Length;
     }
 
-    /// <summary>
-    /// 检查图像是否包含透明像素
-    /// </summary>
-    /// <param name="image">要检查的图像</param>
-    /// <returns>如果图像包含透明像素则返回true</returns>
-    private static bool HasTransparency(Image image)
-    {
-        // 检查图像格式是否支持透明度
-        if (image.PixelType.AlphaRepresentation == PixelAlphaRepresentation.None)
-        {
-            return false; // 图像格式不支持透明度
-        }
-
-        // 对于小图片，逐像素检查是否有透明度
-        if (image.Width * image.Height <= 1000 * 1000) // 对于不超过1000x1000的图片
-        {
-            using var imageWithAlpha = image.CloneAs<Rgba32>();
-
-            for (int y = 0; y < imageWithAlpha.Height; y++)
-            {
-                for (int x = 0; x < imageWithAlpha.Width; x++)
-                {
-                    if (imageWithAlpha[x, y].A < 255)
-                    {
-                        return true;
-                    }
-                }
-            }
-
-            return false;
-        }
-        else
-        {
-            using var imageWithAlpha = image.CloneAs<Rgba32>();
-            int sampleSize = Math.Max(image.Width, image.Height) / 100;
-            sampleSize = Math.Max(1, sampleSize);
-
-            for (int y = 0; y < imageWithAlpha.Height; y += sampleSize)
-            {
-                for (int x = 0; x < imageWithAlpha.Width; x += sampleSize)
-                {
-                    if (imageWithAlpha[x, y].A < 255)
-                    {
-                        return true;
-                    }
-                }
-            }
-
-            return false;
-        }
-    }
-
     /// <summary>
     /// 根据原始文件大小调整质量参数
     /// </summary>