RISHAV DEWAN 1cdede89de fix(email-settings): enable independent message folder and subfolder selection (#21853)
## Summary

Fixes #21840

Currently, selecting a root folder in **Settings → Accounts → Emails →
Folders** automatically selects all of its subfolders, and selecting a
subfolder automatically selects all of its ancestor folders. Users have
no granular control over individual folder sync.

This PR replaces the cascade selection logic with fully independent
per-node selection, matching standard tree-select UX patterns used in
file explorers and permission trees.

## Changes

### Bug Fix
- **`computeFolderIdsForSyncToggle.ts`**: Removed `collectChildren` and
`collectParents` cascade helpers. The function now returns only the
toggled folder's ID, enabling fully independent selection.
- **`SettingsAccountsMessageFoldersCard.tsx`**: Updated call site to
match simplified function signature (removed unused `allFolders` and
`isSynced` args).

### Tests
- **`computeFolderIdsForSyncToggle.test.ts`**: Rewrote tests to reflect
new per-node behavior. Removed tests asserting old cascade behavior;
replaced with tests verifying only the toggled folder is affected.
- **`isFolderTreePartiallySelected.test.ts`** *(new)*: Added 9 tests for
`isFolderTreePartiallySelected`, which is now the primary mechanism
driving the indeterminate checkbox state on parent folders.

## Behavior Before / After

| Action | Before | After |
|--------|--------|-------|
| Check a root folder | Checks root + all subfolders | Checks root only
|
| Check a subfolder | Checks subfolder + all ancestors | Checks
subfolder only |
| Uncheck a root folder | Unchecks root + all subfolders | Unchecks root
only |
| Parent with partial children | No indeterminate state (broken) | Shows
`–` indeterminate correctly |

## What Was Already Correct

The indeterminate checkbox UI was already fully implemented:
- `isFolderTreePartiallySelected` correctly detects mixed sync states in
subtrees
- `SettingsMessageFoldersTreeItem` already passes `indeterminate` to the
`Checkbox` component
- The `Checkbox` component in `twenty-ui` already supports the
`indeterminate` prop

Only the toggle cascade logic needed fixing.

## Testing

```bash
# Unit tests
cd packages/twenty-front && yarn jest --testPathPattern="computeFolderIdsForSyncToggle|isFolderTreePartiallySelected"

# Lint
npx nx lint:diff-with-main twenty-front

# Type check
npx nx typecheck twenty-front

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---------

Co-authored-by: Charles Bochet <charles@twenty.com>
Co-authored-by: neo773 <62795688+neo773@users.noreply.github.com>
Co-authored-by: neo773 <neo773@protonmail.com>
2026-06-24 14:32:18 +00:00
2026-06-11 11:02:28 +02:00

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