When I point the parent_id of a directory to the slave, the whole program should die

[rxliuli]

It happened when I used api PUT /folder/:id to modify the parent_id of the directory

What I want to know the most is how to restore my data, because Joplin can't be opened (as shown above)

Environment

Joplin version: 1.0.199.2381
Platform: Windows
OS specifics: Windows 10

Steps to reproduce

1. Use PUT /folder/:id and pass the parameter {id:'', parent_id:''}, where parent_id is the child of id
2. The entire program is stuck, and exiting and re-entering will not help, it looks like it has encountered a fatal logic error (I guess Joplin did not deal with this edge situation)

Describe what you expected to happen

1. When I call the API PUT /folder/:id for this illegal operation, an exception should be thrown for prompting!
2. If possible, please package the beta version, one for daily use, and the other beta can be developed and tested, otherwise it is quite dangerous, such as the current situation

Logfile

log.txt

[rxliuli]

Found another related problem, when I want to reinstall Joplin upgrade, but the new program can not synchronize data to the local, the error message is:

FetchError: On file a793ec58d9da403a9fce5f8d10e52f59.md: network timeout at: https://public.bn.files.1drv.com/y4mlgUBGWFYo234SDrPff8p3h_NPvorw77kcs8iJGyO0cZbFtojXVmtK25WWa2O3eQfBeHuJtPAAjHeGWdfH_Tqw12-Zws9xghz1q86TwdPSaSGOiM7qpLR8-PNiXlRV1cspykpdM8B-iCT44cSpM6K2bosTA-H1pPasHcLkaGnWBpFeF3eFa3SIeQotCxfC7BAJbeQ4ey5z10_86tu_viHD1JQJ_NcIPt6bMQ8CVfK0Sk/a793ec58d9da403a9fce5f8d10e52f59.md

[rxliuli]

What if parent_id is sub_id? I see that it does not seem to be processed

[rxliuli]

For examples, the folder structure may be as follows

-id1
   -id2

At this time, the parent_id of id1 is specified as id2, is it still not processed yet?

I have two solutions

1. Change parent_id every time to check whether perent_id is a child of the current folder. If it is, an exception is thrown. The specific operation is to get parent_id until root. If the id of the current folder is found, then Throw an exception.
2. When creating or modifying each folder, add a path field, save the full path of the folder (id path), and then directly compare it.