Summary:
- In Gmail all threads /must/ belong to either All Mail, Trash and Spam, and
they are mutually exclusive, so we need to make sure that any add/remove
label operation still guarantees that constraint
- Update ChangeLabelsTask to modify the set of labels to add and remove
based on this rule
- Update tasksFor archiving, moving to trash and moving to spam so they
don't affect any other labels in the thread, as gmail does.
- Removing from view /will/ remove any current labels, but will also
move between all mail and trash as needed
- Remove Inbox, Trash and Spam from the CategoryPicker, as Gmail does
Test Plan: - Unit tests
Reviewers: drew, evan, bengotow
Reviewed By: drew, evan, bengotow
Differential Revision: https://phab.nylas.com/D2715
Summary:
Until now, we've been hiding transactions beneath the surface. When you call persistModel, you're implicitly creating a transaction.
You could explicitly create them with `atomically`..., but there were several critical problems that are fixed in this diff:
- Calling persistModel / unpersistModel within a transaction could cause the DatabaseStore to trigger. This could result in other parts of the app making queries /during/
the transaction, potentially before the COMMIT occurred and saved the changes. The new, explicit inTransaction syntax holds all changes until after COMMIT and then triggers.
- Calling atomically and then calling persistModel inside that resulted in us having to check whether a transaction was present and was gross.
- Many parts of the code ran extensive logic inside a promise chained within `atomically`:
BAD:
```
DatabaseStore.atomically =>
DatabaseStore.persistModel(draft) =>
GoMakeANetworkRequestThatReturnsAPromise
```
OVERWHELMINGLY BETTER:
```
DatabaseStore.inTransaction (t) =>
t.persistModel(draft)
.then =>
GoMakeANetworkRequestThatReturnsAPromise
```
Having explicit transactions also puts us on equal footing with Sequelize and other ORMs. Note that you /have/ to call DatabaseStore.inTransaction (t) =>. There is no other way to access the methods that let you alter the database. :-)
Other changes:
- This diff removes Message.labels and the Message-Labels table. We weren't using Message-level labels anywhere, and the table could grow very large.
- This diff changes the page size during initial sync from 250 => 200 in an effort to make transactions a bit faster.
Test Plan: Run tests!
Reviewers: juan, evan
Reviewed By: juan, evan
Differential Revision: https://phab.nylas.com/D2353
