feat: 添加文件驱动和本地驱动实现，支持文件操作功能

pkg/filedriver/base_driver.go

@@ -0,0 +1,38 @@
+package filedriver
+
+import (
+	"fmt"
+	"github.com/LiteyukiStudio/spage/pkg/constants"
+	"github.com/cloudwego/hertz/pkg/app"
+	"io"
+	"os"
+)
+
+type FileDriver interface {
+	Save(ctx *app.RequestContext, path string, r io.Reader) error
+	Open(ctx *app.RequestContext, path string) (io.ReadCloser, error)
+	Delete(ctx *app.RequestContext, path string) error
+	Stat(ctx *app.RequestContext, path string) (os.FileInfo, error)
+	Get(ctx *app.RequestContext, path string)
+	ListDir(ctx *app.RequestContext, path string) ([]os.FileInfo, error)
+}
+
+type DriverConfig struct {
+	Type           string `mapstructure:"file.driver.type"`
+	BasePath       string `mapstructure:"file.driver.base_path"`
+	WebDavUrl      string `mapstructure:"file.driver.webdav.url"`
+	WebDavUser     string `mapstructure:"file.driver.webdav.user"`
+	WebDavPassword string `mapstructure:"file.driver.webdav.password"`
+	WebDavPolicy   string `mapstructure:"file.driver.webdav.policy"` // proxy|redirect
+}
+
+func GetFileDriver(driverConfig *DriverConfig) (FileDriver, error) {
+	switch driverConfig.Type {
+	case constants.FileDriverLocal:
+		return NewLocalDriver(driverConfig), nil
+	case constants.FileDriverWebdav:
+		return NewWebDAVClientDriver(driverConfig), nil
+	default:
+		return nil, fmt.Errorf("unsupported file driver type: %s", driverConfig.Type)
+	}
+}