yandex: implement cleanup (empty trash) - addresses rclone#575

docs/content/overview.md

@@ -132,7 +132,7 @@ operations more efficient.
 | Openstack Swift              | Yes † | Yes  | No   | No      | No      | Yes   | No [#1614](https://github.com/ncw/rclone/issues/1614) |
 | QingStor                     | No    | Yes  | No   | No      | No      | Yes   | No [#1614](https://github.com/ncw/rclone/issues/1614) |
 | SFTP                         | No    | No   | Yes  | Yes     | No      | No    | Yes          |
-| Yandex Disk                  | Yes   | No   | No   | No      | No  [#575](https://github.com/ncw/rclone/issues/575) | Yes | Yes  |
+| Yandex Disk                  | Yes   | No   | No   | No      | Yes     | Yes | Yes  |
 | The local filesystem         | Yes   | No   | Yes  | Yes     | No      | No    | Yes          |
 
 ### Purge ###

docs/content/yandex.md

@@ -121,3 +121,9 @@ metadata called `rclone_modified` in RFC3339 with nanoseconds format.
 ### MD5 checksums ###
 
 MD5 checksums are natively supported by Yandex Disk.
+
+### Emptying Trash ###
+
+If you wish to empty your trash you can use the `rclone cleanup remote:`
+command which will permanently delete all your trashed files. This command
+does not take any path arguments.

yandex/api/empty_trash.go

@@ -0,0 +1,13 @@
+package src
+
+// Empty trash will permanently delete all trashed files/folders from Yandex Disk
+func (c *Client) EmptyTrash() error {
+	fullURL := RootAddr
+	fullURL += "/v1/disk/trash/resources"
+
+	if err := c.PerformDelete(fullURL); err != nil {
+		return err
+	}
+
+	return nil
+}

yandex/yandex.go

@@ -479,6 +479,11 @@ func (f *Fs) Purge() error {
 	return f.purgeCheck("", false)
 }
 
+// CleanUp permanently deletes all trashed files/folders
+func (f *Fs) CleanUp() error {
+	return f.yd.EmptyTrash()
+}
+
 // Hashes returns the supported hash sets.
 func (f *Fs) Hashes() fs.HashSet {
 	return fs.HashSet(fs.HashMD5)