chore: 初始化仓库，排除二进制文件和覆盖率文件

internal/service/upload_service.go

@@ -0,0 +1,160 @@
+package service
+
+import (
+	"carrotskin/pkg/config"
+	"carrotskin/pkg/storage"
+	"context"
+	"fmt"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// FileType 文件类型枚举
+type FileType string
+
+const (
+	FileTypeAvatar  FileType = "avatar"
+	FileTypeTexture FileType = "texture"
+)
+
+// UploadConfig 上传配置
+type UploadConfig struct {
+	AllowedExts map[string]bool // 允许的文件扩展名
+	MinSize     int64           // 最小文件大小（字节）
+	MaxSize     int64           // 最大文件大小（字节）
+	Expires     time.Duration   // URL过期时间
+}
+
+// GetUploadConfig 根据文件类型获取上传配置
+func GetUploadConfig(fileType FileType) *UploadConfig {
+	switch fileType {
+	case FileTypeAvatar:
+		return &UploadConfig{
+			AllowedExts: map[string]bool{
+				".jpg":  true,
+				".jpeg": true,
+				".png":  true,
+				".gif":  true,
+				".webp": true,
+			},
+			MinSize: 1024,            // 1KB
+			MaxSize: 5 * 1024 * 1024, // 5MB
+			Expires: 15 * time.Minute,
+		}
+	case FileTypeTexture:
+		return &UploadConfig{
+			AllowedExts: map[string]bool{
+				".png": true,
+			},
+			MinSize: 1024,             // 1KB
+			MaxSize: 10 * 1024 * 1024, // 10MB
+			Expires: 15 * time.Minute,
+		}
+	default:
+		return nil
+	}
+}
+
+// ValidateFileName 验证文件名
+func ValidateFileName(fileName string, fileType FileType) error {
+	if fileName == "" {
+		return fmt.Errorf("文件名不能为空")
+	}
+	
+	uploadConfig := GetUploadConfig(fileType)
+	if uploadConfig == nil {
+		return fmt.Errorf("不支持的文件类型")
+	}
+	
+	ext := strings.ToLower(filepath.Ext(fileName))
+	if !uploadConfig.AllowedExts[ext] {
+		return fmt.Errorf("不支持的文件格式: %s", ext)
+	}
+	
+	return nil
+}
+
+// GenerateAvatarUploadURL 生成头像上传URL
+func GenerateAvatarUploadURL(ctx context.Context, storageClient *storage.StorageClient, cfg config.RustFSConfig, userID int64, fileName string) (*storage.PresignedPostPolicyResult, error) {
+	// 1. 验证文件名
+	if err := ValidateFileName(fileName, FileTypeAvatar); err != nil {
+		return nil, err
+	}
+	
+	// 2. 获取上传配置
+	uploadConfig := GetUploadConfig(FileTypeAvatar)
+	
+	// 3. 获取存储桶名称
+	bucketName, err := storageClient.GetBucket("avatars")
+	if err != nil {
+		return nil, fmt.Errorf("获取存储桶失败: %w", err)
+	}
+	
+	// 4. 生成对象名称（路径）
+	// 格式: user_{userId}/timestamp_{originalFileName}
+	timestamp := time.Now().Format("20060102150405")
+	objectName := fmt.Sprintf("user_%d/%s_%s", userID, timestamp, fileName)
+	
+	// 5. 生成预签名POST URL
+	result, err := storageClient.GeneratePresignedPostURL(
+		ctx,
+		bucketName,
+		objectName,
+		uploadConfig.MinSize,
+		uploadConfig.MaxSize,
+		uploadConfig.Expires,
+		cfg.UseSSL,
+		cfg.Endpoint,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("生成上传URL失败: %w", err)
+	}
+	
+	return result, nil
+}
+
+// GenerateTextureUploadURL 生成材质上传URL
+func GenerateTextureUploadURL(ctx context.Context, storageClient *storage.StorageClient, cfg config.RustFSConfig, userID int64, fileName, textureType string) (*storage.PresignedPostPolicyResult, error) {
+	// 1. 验证文件名
+	if err := ValidateFileName(fileName, FileTypeTexture); err != nil {
+		return nil, err
+	}
+	
+	// 2. 验证材质类型
+	if textureType != "SKIN" && textureType != "CAPE" {
+		return nil, fmt.Errorf("无效的材质类型: %s", textureType)
+	}
+	
+	// 3. 获取上传配置
+	uploadConfig := GetUploadConfig(FileTypeTexture)
+	
+	// 4. 获取存储桶名称
+	bucketName, err := storageClient.GetBucket("textures")
+	if err != nil {
+		return nil, fmt.Errorf("获取存储桶失败: %w", err)
+	}
+	
+	// 5. 生成对象名称（路径）
+	// 格式: user_{userId}/{textureType}/timestamp_{originalFileName}
+	timestamp := time.Now().Format("20060102150405")
+	textureTypeFolder := strings.ToLower(textureType)
+	objectName := fmt.Sprintf("user_%d/%s/%s_%s", userID, textureTypeFolder, timestamp, fileName)
+	
+	// 6. 生成预签名POST URL
+	result, err := storageClient.GeneratePresignedPostURL(
+		ctx,
+		bucketName,
+		objectName,
+		uploadConfig.MinSize,
+		uploadConfig.MaxSize,
+		uploadConfig.Expires,
+		cfg.UseSSL,
+		cfg.Endpoint,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("生成上传URL失败: %w", err)
+	}
+	
+	return result, nil
+}