Feat: import file from existing outer folder

assets @ df766e44

-Subproject commit 10e5497cfb9f2c180f28a5a492745f521c4b72b1
+Subproject commit df766e44387528370bfa913b094ad16898a013a2

models/policy.go

@@ -222,6 +222,11 @@ func (policy *Policy) IsThumbGenerateNeeded() bool {
 	return policy.Type == "local"
 }
 
+// CanStructureBeListed 返回存储策略是否能被前台列物理目录
+func (policy *Policy) CanStructureBeListed() bool {
+	return policy.Type != "local" && policy.Type != "remote"
+}
+
 // GetUploadURL 获取文件上传服务API地址
 func (policy *Policy) GetUploadURL() string {
 	server, err := url.Parse(policy.Server)

models/policy_test.go

@@ -246,9 +246,11 @@ func TestPolicy_Props(t *testing.T) {
 	asserts.True(policy.IsPathGenerateNeeded())
 	asserts.True(policy.IsTransitUpload(4))
 	asserts.False(policy.IsTransitUpload(5 * 1024 * 1024))
+	asserts.True(policy.CanStructureBeListed())
 	policy.Type = "local"
 	asserts.True(policy.IsThumbGenerateNeeded())
 	asserts.True(policy.IsPathGenerateNeeded())
+	asserts.False(policy.CanStructureBeListed())
 }
 
 func TestPolicy_IsThumbExist(t *testing.T) {

pkg/filesystem/manage.go

@@ -285,6 +285,38 @@ func (fs *FileSystem) List(ctx context.Context, dirPath string, pathProcessor fu
 	return fs.listObjects(ctx, parentPath, childFiles, childFolders, pathProcessor), nil
 }
 
+// ListPhysical 列出存储策略中的外部目录
+// TODO:测试
+func (fs *FileSystem) ListPhysical(ctx context.Context, dirPath string) ([]Object, error) {
+	if err := fs.DispatchHandler(); fs.Policy == nil || err != nil {
+		return nil, ErrUnknownPolicyType
+	}
+
+	// 存储策略不支持列取时，返回空结果
+	if !fs.Policy.CanStructureBeListed() {
+		return nil, nil
+	}
+
+	// 列取路径
+	objects, err := fs.Handler.List(ctx, dirPath, false)
+	if err != nil {
+		return nil, err
+	}
+
+	var (
+		folders []model.Folder
+	)
+	for _, object := range objects {
+		if object.IsDir {
+			folders = append(folders, model.Folder{
+				Name: object.Name,
+			})
+		}
+	}
+
+	return fs.listObjects(ctx, dirPath, nil, folders, nil), nil
+}
+
 func (fs *FileSystem) listObjects(ctx context.Context, parent string, files []model.File, folders []model.Folder, pathProcessor func(string) string) []Object {
 	// 分享文件的ID
 	shareKey := ""

pkg/filesystem/manage_test.go

@@ -8,14 +8,62 @@ import (
 	"github.com/HFO4/cloudreve/pkg/cache"
 	"github.com/HFO4/cloudreve/pkg/conf"
 	"github.com/HFO4/cloudreve/pkg/filesystem/fsctx"
+	"github.com/HFO4/cloudreve/pkg/filesystem/response"
 	"github.com/HFO4/cloudreve/pkg/serializer"
 	"github.com/HFO4/cloudreve/pkg/util"
 	"github.com/jinzhu/gorm"
 	"github.com/stretchr/testify/assert"
+	testMock "github.com/stretchr/testify/mock"
 	"os"
 	"testing"
 )
 
+func TestFileSystem_ListPhysical(t *testing.T) {
+	asserts := assert.New(t)
+	fs := &FileSystem{
+		User: &model.User{
+			Model: gorm.Model{
+				ID: 1,
+			},
+		},
+		Policy: &model.Policy{Type: "mock"},
+	}
+	ctx := context.Background()
+
+	// 未知存储策略
+	{
+		fs.Policy.Type = "unknown"
+		res, err := fs.ListPhysical(ctx, "/")
+		asserts.Equal(ErrUnknownPolicyType, err)
+		asserts.Empty(res)
+		fs.Policy.Type = "mock"
+	}
+
+	// 无法列取目录
+	{
+		testHandler := new(FileHeaderMock)
+		testHandler.On("List", testMock.Anything, "/", testMock.Anything).Return([]response.Object{}, errors.New("error"))
+		fs.Handler = testHandler
+		res, err := fs.ListPhysical(ctx, "/")
+		asserts.EqualError(err, "error")
+		asserts.Empty(res)
+	}
+
+	// 成功
+	{
+		testHandler := new(FileHeaderMock)
+		testHandler.On("List", testMock.Anything, "/", testMock.Anything).Return(
+			[]response.Object{{IsDir: true, Name: "1"}, {IsDir: false, Name: "2"}},
+			nil,
+		)
+		fs.Handler = testHandler
+		res, err := fs.ListPhysical(ctx, "/")
+		asserts.NoError(err)
+		asserts.Len(res, 1)
+		asserts.Equal("1", res[0].Name)
+	}
+}
+
 func TestFileSystem_List(t *testing.T) {
 	asserts := assert.New(t)
 	fs := &FileSystem{User: &model.User{

pkg/filesystem/upload_test.go

@@ -27,7 +27,8 @@ type FileHeaderMock struct {
 }
 
 func (m FileHeaderMock) List(ctx context.Context, path string, recursive bool) ([]response.Object, error) {
-	panic("implement me")
+	args := m.Called(ctx, path, recursive)
+	return args.Get(0).([]response.Object), args.Error(1)
 }
 
 func (m FileHeaderMock) Get(ctx context.Context, path string) (response.RSCloser, error) {

routers/controllers/admin.go

@@ -413,3 +413,14 @@ func AdminCreateImportTask(c *gin.Context) {
 		c.JSON(200, ErrorResponse(err))
 	}
 }
+
+// AdminListFolders 列出用户或外部文件系统目录
+func AdminListFolders(c *gin.Context) {
+	var service admin.ListFolderService
+	if err := c.ShouldBindUri(&service); err == nil {
+		res := service.List(c)
+		c.JSON(200, res)
+	} else {
+		c.JSON(200, ErrorResponse(err))
+	}
+}

routers/router.go

@@ -367,6 +367,9 @@ func InitMasterRouter() *gin.Engine {
 					file.GET("preview/:id", controllers.AdminGetFile)
 					// 删除
 					file.POST("delete", controllers.AdminDeleteFile)
+					// 列出用户或外部文件系统目录
+					file.GET("folders/:type/:id/*path",
+						controllers.AdminListFolders)
 				}
 
 				share := admin.Group("share")

service/admin/file.go

@@ -22,6 +22,71 @@ type FileBatchService struct {
 	Force bool   `json:"force"`
 }
 
+// ListFolderService 列目录结构
+type ListFolderService struct {
+	Path string `uri:"path" binding:"required,max=65535"`
+	ID   uint   `uri:"id" binding:"required"`
+	Type string `uri:"type" binding:"eq=policy|eq=user"`
+}
+
+// List 列出指定路径下的目录
+func (service *ListFolderService) List(c *gin.Context) serializer.Response {
+	if service.Type == "policy" {
+		// 列取存储策略中的目录
+		policy, err := model.GetPolicyByID(service.ID)
+		if err != nil {
+			return serializer.Err(serializer.CodeNotFound, "存储策略不存在", err)
+		}
+
+		// 创建文件系统
+		fs, err := filesystem.NewAnonymousFileSystem()
+		if err != nil {
+			return serializer.Err(serializer.CodeInternalSetting, "无法创建文件系统", err)
+		}
+		defer fs.Recycle()
+
+		// 列取存储策略中的文件
+		fs.Policy = &policy
+		res, err := fs.ListPhysical(c.Request.Context(), service.Path)
+		if err != nil {
+			return serializer.Err(serializer.CodeIOFailed, "无法列取目录", err)
+		}
+
+		return serializer.Response{
+			Data: map[string]interface{}{
+				"objects": res,
+			},
+		}
+
+	}
+
+	// 列取用户空间目录
+	// 查找用户
+	user, err := model.GetUserByID(service.ID)
+	if err != nil {
+		return serializer.Err(serializer.CodeNotFound, "用户不存在", err)
+	}
+
+	// 创建文件系统
+	fs, err := filesystem.NewFileSystem(&user)
+	if err != nil {
+		return serializer.Err(serializer.CodeInternalSetting, "无法创建文件系统", err)
+	}
+	defer fs.Recycle()
+
+	// 列取目录
+	res, err := fs.List(c.Request.Context(), service.Path, nil)
+	if err != nil {
+		return serializer.Err(serializer.CodeIOFailed, "无法列取目录", err)
+	}
+
+	return serializer.Response{
+		Data: map[string]interface{}{
+			"objects": res,
+		},
+	}
+}
+
 // Delete 删除文件
 func (service *FileBatchService) Delete(c *gin.Context) serializer.Response {
 	files, err := model.GetFilesByIDs(service.ID, 0)