refactor: 虎皮棋适配器内联 payment_order_service + member 服务拆 4 表文件 + file_storage 移入 common

common/file_storage.go

@@ -0,0 +1,51 @@
+package common
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/gogf/gf/v2/net/ghttp"
+)
+
+var allowedImageExt = map[string]bool{".jpg": true, ".jpeg": true, ".png": true, ".webp": true}
+
+// SaveUploadedFile 保存上传文件到 workspace/{subDir}，返回访问路径 /workspace/{subDir}/{filename}
+func SaveUploadedFile(file *ghttp.UploadFile, subDir string) (string, error) {
+	if file == nil {
+		return "", errors.New("未收到文件")
+	}
+	ext := strings.ToLower(filepath.Ext(file.Filename))
+	if !allowedImageExt[ext] {
+		return "", errors.New("仅支持 jpg/jpeg/png/webp 格式")
+	}
+	if file.Size > 10*1024*1024 {
+		return "", errors.New("单张图片不能超过 10MB")
+	}
+	dir := filepath.Join("workspace", subDir)
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return "", err
+	}
+	filename := fmt.Sprintf("%d%s", time.Now().UnixNano(), ext)
+	path := filepath.Join(dir, filename)
+	if _, err := file.Save(path); err != nil {
+		return "", err
+	}
+	return "/" + filepath.ToSlash(filepath.Join("workspace", subDir, filename)), nil
+}
+
+// RemoveWorkspaceFile 删除 workspace 下文件（路径穿越防护）
+func RemoveWorkspaceFile(url string) error {
+	rel := strings.TrimPrefix(url, "/workspace/")
+	if rel == "" || strings.Contains(rel, "..") {
+		return errors.New("非法文件路径")
+	}
+	abs := filepath.Join("workspace", rel)
+	if _, err := os.Stat(abs); os.IsNotExist(err) {
+		return nil
+	}
+	return os.Remove(abs)
+}