This was an issue because guests do not log in with a teamToken, it is implicitly set by MatrixChat when it mounts. The fix is to view_home_page when a login occurs and MatrixChat has this._teamToken set.
- Create a promise that will serve as a lock to be blocked on by things that need to wait for the first sync before accessing state.
- Use this promise to block `view_room` calls until a sync has occured instead of just dropping them silently if the sync hasn't happened yet.
- Store the current room ID in a localStorage item `mx_last_room_id` when `view_room` fires. This persists the last viewed room ID so that it can be restored on refresh, browser quit. This replaces the previous logic which set the room following a sync based on the most recent unread room.
MatrixChat was trying to display an error if the session failed to
restore, but it was never actually being shown because it was just
set as a member variable and therefore never actually caused
a re-render for the error to be displayed. Almost all errors are
caught by _restoreFromLocalStorage which displays the fancy dialog
if your session can't be restored, so I'm not convinced this ever
even tried to do anything anyway. Remove it.
Specifically:
```
JS 2.1.1 (Linux 0.0.0) joining a room over federation should not get stuck at a spinner FAILED
Did not find exactly one match (found: 0) for componentType:function (props, context, updater) {
```
actually meant that the room directory wasn't displayed - probably because the dispatch `view_room_directory` ended up on another tick of the event loop, meaning that the directory wasn't displayedi. The fix attempted in ths commit is to use `this._setPage` instead to view the directory. This uses `setState` to set the screen to the directory, so I'm not entirely convinced this will solve the problem (as `setState` may also end up doing things on another tick.
and
```
JS 2.1.1 (Linux 0.0.0) loading: MatrixClient rehydrated from stored credentials: shows a room view if we followed a room link FAILED
MatrixChat still not ready after 5 tries
awaitRoomView@/home/travis/build/vector-im/riot-web/test/all-tests.js:201363:90
```
was happening probably because in the handler for the `sync` event in `MatrixChat` (around line 840), there was one case in which the `ready` state may not be true (causing all 5 attempts to fail), and this case relied on `starting_room_alias_payload`. This `starting_room_alias_payload` is now redundant because of `initialScreenAfterLogin`, which was added recently.
To prevent the login screen from flashing when refreshing the app, use some state to indicate that a login is in progress, and OR that with the existing `loading` boolean to show the `<Spinner>` instead of the default `<Login>`.
This might be too invasive, and a default spinner may be better.
_onLoadCompleted happens straight away because Lifecycle finishes loading the session instantly when registration parameters (client_secret etc.) are set.
This follows from a small amount of refactoring done when RTS was introduced. Instead of setting the screen after sync, do it only after login.
This requires as-yet-to-be-PRd riot-web changes.
This includes:
- initialScreenAfterLogin, which can be used to set the screen after login, and represents the screen that would be viewed if the window.location at the time of initialising Riot were routed.
- guestCreds are now part of state, because otherwise they don't cause the login/registration views to update when set.
- instead of worrying about races and using this._setPage, use a dispatch.
Use the on_logged_in dispatch instead. Call setPage in one place, _onLoggedIn, when deciding which page to view on login. Change some require to import, var to const. Remove onTeamMemberRegistered and just use a nullable argument to onRegistered
For example, if someone ends up on /home somehow, just redirect to the directory instead of displaying a very awkward "File not found" plain text in the home page iFrame.
