ocis: file_target does not contain Share folder

Describe the bug

As compared to oc10 backend, if system config share_folder is set, share create response data value file_target contains share_folder path before resource path, but ocis response only contains resource path

Steps to reproduce

Steps to reproduce the behavior:

1. create three users uu1, uu2, uu3
2. using user uu1 create a file with the filename testfile.txt
3. using user uu2 create a file with the filename testfile.txt
4. using user uu1 share file testfile.txt with user uu3

curl -k -u uu1:uu1 https://localhost:9200/ocs/v1.php/apps/files_sharing/api/v1/shares -d 'path=testfile.txt' -d 'shareWith=uu3' -d 'shareType=0' | xmllint --format -
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1332  100  1289  100    43   6748    225 --:--:-- --:--:-- --:--:--  6937
<?xml version="1.0" encoding="UTF-8"?>
<ocs>
  <meta>
    <status>ok</status>
    <statuscode>100</statuscode>
    <message>OK</message>
  </meta>
  <data>
    <id>0cb58b99-bae9-4f10-9396-a3e95ec370f3</id>
    <share_type>0</share_type>
    <uid_owner>uu1</uid_owner>
    <displayname_owner>uu1</displayname_owner>
    <additional_info_owner>uu1@uu.cc</additional_info_owner>
    <permissions>19</permissions>
    <stime>1623074243</stime>
    <parent/>
    <expiration/>
    <token/>
    <uid_file_owner>uu1</uid_file_owner>
    <displayname_file_owner>uu1</displayname_file_owner>
    <additional_info_file_owner>uu1@uu.cc</additional_info_file_owner>
    <state>0</state>
    <path>/testfile.txt</path>
    <item_type>file</item_type>
    <mimetype>text/plain</mimetype>
    <storage_id>1284d238-aa92-42ce-bdc4-0b0000009157</storage_id>
    <storage>0</storage>
    <item_source>MTI4NGQyMzgtYWE5Mi00MmNlLWJkYzQtMGIwMDAwMDA5MTU3OmI0YzgyYmFmLWQ4NGQtNGU3MS1iMzBiLWEwM2E1NzQ4YjAzMQ==</item_source>
    <file_source>MTI4NGQyMzgtYWE5Mi00MmNlLWJkYzQtMGIwMDAwMDA5MTU3OmI0YzgyYmFmLWQ4NGQtNGU3MS1iMzBiLWEwM2E1NzQ4YjAzMQ==</file_source>
    <file_parent/>
    <file_target>/testfile.txt</file_target>
    <share_with>uu3</share_with>
    <share_with_displayname>uu3</share_with_displayname>
    <share_with_additional_info>uu3@uu.cc</share_with_additional_info>
    <mail_send>0</mail_send>
    <name/>
  </data>
</ocs>

Expected behavior

create share response in oc10:

curl -k -u admin:admin http://localhost/core/ocs/v1.php/apps/files_sharing/api/v1/shares -d 'path=lorem.txt' -d 'shareWith=uu2' -d 'shareType=0' | xmllint --format -
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1085  100  1045  100    40   2542     97 --:--:-- --:--:-- --:--:--  2633
<?xml version="1.0"?>
<ocs>
  <meta>
    <status>ok</status>
    <statuscode>100</statuscode>
    <message/>
    <totalitems/>
    <itemsperpage/>
  </meta>
  <data>
    <id>1790</id>
    <share_type>0</share_type>
    <uid_owner>admin</uid_owner>
    <displayname_owner>admin</displayname_owner>
    <permissions>19</permissions>
    <stime>1623075023</stime>
    <parent/>
    <expiration/>
    <token/>
    <uid_file_owner>admin</uid_file_owner>
    <displayname_file_owner>admin</displayname_file_owner>
    <additional_info_owner/>
    <additional_info_file_owner/>
    <path>/lorem.txt</path>
    <mimetype>text/plain</mimetype>
    <storage_id>home::admin</storage_id>
    <storage>1</storage>
    <item_type>file</item_type>
    <item_source>2147523314</item_source>
    <file_source>2147523314</file_source>
    <file_parent>3</file_parent>
    <file_target>/Shares/lorem.txt</file_target>
    <share_with>uu2</share_with>
    <share_with_displayname>uu2</share_with_displayname>
    <share_with_additional_info/>
    <mail_send>0</mail_send>
    <attributes/>
  </data>
</ocs>

Actual behavior

• same file_target for both backends

if this is expected feature, please close the issue

Setup

Please describe how you started the server and provide a list of relevant environment variables.

OCIS_VERSION=latest
BRANCH=master
STORAGE_FRONTEND_UPLOAD_DISABLE_TUS=false

Additional context

related test is covered here