## how to set retention period on matrix rooms 

SEE: https://github.com/matrix-org/matrix-spec-proposals/blob/matthew/msc1763/proposals/1763-configurable-retention-periods.md

TBH i'm struggling a bit to set the retention in an automated fashion at all.  We don't have a tool for it  and it requires having admin in the room.  
The best I was able to figure out so far

    1. go to the cyberia space with the network tab of the dev tools open

    2. look for the _matrix/client/v1/rooms/!XJhdXteYnRMldzWFyX%3Acyberia.club/hierarchy?suggested_only=true&max_depth=1&limit=20 GET request and copy its json response

    3. extract the room ids with `jq`
    4. ssh into the matrix server and run `./reset-password ed-209:cyberia.club` 
    5. log in as ed-209
    6. go to a room then type `/devtools` to open the devtools, and make sure the browser network tab is open
    7. send a custom room state event with event type m.room.retention and body `{"max_lifetime":86400000000}`
    8. find the `PUT _matrix/client/r0/rooms/!roqAKCndauLBfhLdGs%3Acyberia.club/state/m.room.retention/` request in the network tab and right click -> copy as curl
    9. write a script that runs this curl command for every room ID that you collected

```
(()=>{

  const list = `!JFYMcOkcWtccikJlkA%3Acyberia.club
!SfvWHaBPcmgzTWdvZB%3Acyberia.club
!hYrELkZnhpqlzZoQZZ%3Acyberia.club
blahbalahblahbah....`.split("\n");

const space = `


`;
  console.log(space + 
  list.map(roomid => {
    return `curl 'https://matrix.cyberia.club/_matrix/client/r0/rooms/${roomid}/state/m.room.retention/' -X PUT  AUTH HEADER GOES HERE!!!  --data-raw '{"max_lifetime":86400000000}'`
  }).join('\n\n\n')+space);

})()

```

so far its been slightly hit and miss but I'll check a few rooms and make sure it at least appears to have worked

( you can check a room by typing `/devtools` in the message box and then going to the explore room state section, there should be an entry for m.room.retention )