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package onedrive
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import (
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"context"
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"errors"
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"fmt"
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"net/url"
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"path"
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"path/filepath"
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"strings"
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"time"
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model "github.com/cloudreve/Cloudreve/v3/models"
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"github.com/cloudreve/Cloudreve/v3/pkg/auth"
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"github.com/cloudreve/Cloudreve/v3/pkg/cache"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/driver"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/response"
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"github.com/cloudreve/Cloudreve/v3/pkg/request"
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"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
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)
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// Driver OneDrive 适配器
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type Driver struct {
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Policy *model.Policy
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Client *Client
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HTTPClient request.Client
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}
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// NewDriver 从存储策略初始化新的Driver实例
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func NewDriver(policy *model.Policy) (driver.Handler, error) {
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client, err := NewClient(policy)
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return Driver{
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Policy: policy,
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Client: client,
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HTTPClient: request.NewClient(),
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}, err
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}
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// List 列取项目
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func (handler Driver) List(ctx context.Context, base string, recursive bool) ([]response.Object, error) {
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base = strings.TrimPrefix(base, "/")
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// 列取子项目
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objects, _ := handler.Client.ListChildren(ctx, base)
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// 获取真实的列取起始根目录
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rootPath := base
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if realBase, ok := ctx.Value(fsctx.PathCtx).(string); ok {
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rootPath = realBase
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} else {
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ctx = context.WithValue(ctx, fsctx.PathCtx, base)
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}
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// 整理结果
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res := make([]response.Object, 0, len(objects))
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for _, object := range objects {
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source := path.Join(base, object.Name)
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rel, err := filepath.Rel(rootPath, source)
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if err != nil {
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continue
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}
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res = append(res, response.Object{
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Name: object.Name,
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RelativePath: filepath.ToSlash(rel),
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Source: source,
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Size: object.Size,
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IsDir: object.Folder != nil,
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LastModify: time.Now(),
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})
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}
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// 递归列取子目录
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if recursive {
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for _, object := range objects {
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if object.Folder != nil {
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sub, _ := handler.List(ctx, path.Join(base, object.Name), recursive)
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res = append(res, sub...)
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}
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}
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}
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return res, nil
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}
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// Get 获取文件
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func (handler Driver) Get(ctx context.Context, path string) (response.RSCloser, error) {
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// 获取文件源地址
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downloadURL, err := handler.Source(
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ctx,
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path,
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url.URL{},
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60,
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false,
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0,
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)
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if err != nil {
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return nil, err
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}
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// 获取文件数据流
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resp, err := handler.HTTPClient.Request(
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"GET",
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downloadURL,
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nil,
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request.WithContext(ctx),
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request.WithTimeout(time.Duration(0)),
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).CheckHTTPResponse(200).GetRSCloser()
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if err != nil {
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return nil, err
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}
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resp.SetFirstFakeChunk()
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// 尝试自主获取文件大小
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if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
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resp.SetContentLength(int64(file.Size))
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}
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return resp, nil
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}
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// Put 将文件流保存到指定目录
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func (handler Driver) Put(ctx context.Context, file fsctx.FileHeader) error {
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defer file.Close()
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return handler.Client.Upload(ctx, file)
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}
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// Delete 删除一个或多个文件,
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// 返回未删除的文件,及遇到的最后一个错误
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func (handler Driver) Delete(ctx context.Context, files []string) ([]string, error) {
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return handler.Client.BatchDelete(ctx, files)
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}
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// Thumb 获取文件缩略图
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func (handler Driver) Thumb(ctx context.Context, path string) (*response.ContentResponse, error) {
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var (
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thumbSize = [2]uint{400, 300}
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ok = false
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)
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if thumbSize, ok = ctx.Value(fsctx.ThumbSizeCtx).([2]uint); !ok {
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return nil, errors.New("无法获取缩略图尺寸设置")
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}
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res, err := handler.Client.GetThumbURL(ctx, path, thumbSize[0], thumbSize[1])
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if err != nil {
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// 如果出现异常,就清空文件的pic_info
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if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
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file.UpdatePicInfo("")
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}
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}
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return &response.ContentResponse{
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Redirect: true,
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URL: res,
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}, err
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}
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// Source 获取外链URL
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func (handler Driver) Source(
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ctx context.Context,
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path string,
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baseURL url.URL,
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ttl int64,
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isDownload bool,
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speed int,
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) (string, error) {
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cacheKey := fmt.Sprintf("onedrive_source_%d_%s", handler.Policy.ID, path)
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if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
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cacheKey = fmt.Sprintf("onedrive_source_file_%d_%d", file.UpdatedAt.Unix(), file.ID)
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// 如果是永久链接,则返回签名后的中转外链
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if ttl == 0 {
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signedURI, err := auth.SignURI(
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auth.General,
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fmt.Sprintf("/api/v3/file/source/%d/%s", file.ID, file.Name),
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ttl,
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)
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if err != nil {
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return "", err
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}
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return baseURL.ResolveReference(signedURI).String(), nil
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}
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}
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// 尝试从缓存中查找
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if cachedURL, ok := cache.Get(cacheKey); ok {
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return handler.replaceSourceHost(cachedURL.(string))
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}
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// 缓存不存在,重新获取
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res, err := handler.Client.Meta(ctx, "", path)
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if err == nil {
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// 写入新的缓存
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cache.Set(
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cacheKey,
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res.DownloadURL,
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model.GetIntSetting("onedrive_source_timeout", 1800),
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)
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return handler.replaceSourceHost(res.DownloadURL)
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}
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return "", err
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}
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func (handler Driver) replaceSourceHost(origin string) (string, error) {
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if handler.Policy.OptionsSerialized.OdProxy != "" {
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source, err := url.Parse(origin)
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if err != nil {
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return "", err
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}
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cdn, err := url.Parse(handler.Policy.OptionsSerialized.OdProxy)
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if err != nil {
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return "", err
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}
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// 替换反代地址
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source.Scheme = cdn.Scheme
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source.Host = cdn.Host
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return source.String(), nil
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}
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return origin, nil
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}
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// Token 获取上传会话URL
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func (handler Driver) Token(ctx context.Context, ttl int64, uploadSession *serializer.UploadSession, file fsctx.FileHeader) (serializer.UploadCredential, error) {
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fileInfo := file.Info()
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// 如果小于4MB,则由服务端中转
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if fileInfo.Size <= SmallFileSize {
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return serializer.UploadCredential{}, nil
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}
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// 生成回调地址
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siteURL := model.GetSiteURL()
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apiBaseURI, _ := url.Parse("/api/v3/callback/onedrive/finish/" + uploadSession.Key)
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apiURL := siteURL.ResolveReference(apiBaseURI)
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uploadURL, err := handler.Client.CreateUploadSession(ctx, fileInfo.SavePath, WithConflictBehavior("fail"))
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if err != nil {
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return serializer.UploadCredential{}, err
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}
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// 监控回调及上传
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go handler.Client.MonitorUpload(uploadURL, uploadSession.Key, fileInfo.SavePath, fileInfo.Size, ttl)
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return serializer.UploadCredential{
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Policy: uploadURL,
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Token: apiURL.String(),
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}, nil
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}
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// 取消上传凭证
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func (handler Driver) CancelToken(ctx context.Context, uploadSession *serializer.UploadSession) error {
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return nil
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}
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