feat(upload): add image format conversion and quality settings for uploads #6

Models/Enums/ImageFormat.cs

@@ -0,0 +1,28 @@
+namespace Foxel.Models.Enums;
+
+/// <summary>
+/// 支持的图片格式枚举
+/// </summary>
+public enum ImageFormat
+{
+    /// <summary>
+    /// 保持原格式
+    /// </summary>
+    Original = 0,
+    
+    /// <summary>
+    /// JPEG格式
+    /// </summary>
+    Jpeg = 1,
+    
+    /// <summary>
+    /// PNG格式
+    /// </summary>
+    Png = 2,
+    
+    /// <summary>
+    /// WebP格式
+    /// </summary>
+    WebP = 3,
+
+}

Models/Request/Picture/UploadPictureRequest.cs

@@ -1,16 +1,30 @@
 using System.ComponentModel.DataAnnotations;
 using Foxel.Models.DataBase;
+using Foxel.Models.Enums;
 using Foxel.Services.Attributes;
 
 namespace Foxel.Models.Request.Picture;
 
 public record UploadPictureRequest
 {
-    [Required] public IFormFile File { get; set; } = null!;
+    [Required(ErrorMessage = "文件不能为空")]
+    public IFormFile File { get; set; } = null!;
 
-    public int? Permission { get; set; } = 1;
+    [Range(0, 2, ErrorMessage = "权限类型必须是0（公开）、1（私有）或2（仅关注者）")]
+    public int? Permission { get; set; } = 0;
 
-    public int? AlbumId { get; set; } = null;
-    
-    public StorageType? StorageType { get; set; } = null;
+    public int? AlbumId { get; set; }
+
+    public StorageType? StorageType { get; set; }
+
+    /// <summary>
+    /// 目标图片格式，默认为保持原格式
+    /// </summary>
+    public ImageFormat ConvertToFormat { get; set; } = ImageFormat.Original;
+
+    /// <summary>
+    /// 图片质量（仅对JPEG和WebP有效，1-100）
+    /// </summary>
+    [Range(1, 100, ErrorMessage = "图片质量必须在1-100之间")]
+    public int Quality { get; set; } = 95;
 }