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fix(calendars): hide-only visibility reconcile, and keep it working read-only

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Code review of the one-visibility-model fix (#75) found the reconciliation
reaching further than it should and the read-only case falling through it.

The migration switched calendars *on* to keep the upgrade invisible, but
"not disabled in Calendula" is the default for every calendar, including ones
the user deliberately hid in Google Calendar, Etar or DAVx5 — those would
reappear there and start firing reminders from a switch the user never touched.
Its sync_events guard didn't hold either: an ACCOUNT_TYPE_LOCAL calendar another
app created can sit at sync_events=0 while holding real device-local events. The
reconcile now only hides, and a one-time notice explains that visibility follows
the device and where to change it, instead of quietly rewriting other apps'
state.

Only READ_CALENDAR gates the app, so a read-only install could not write the
flag at all: every calendar it had switched off came back with its events and
its reminders, and the switch couldn't undo it. Those switch-offs are kept
app-side now (the retired disabled-set key, re-read under a new name), folded
into the visibility every consumer reads, and drained into the provider entry by
entry once WRITE_CALENDAR arrives — which also makes a part-applied run resumable
without re-applying a switch the user has since flipped by hand.

Also: restore the ReminderNotifier.post gate, the one path a snooze re-shown
from our own alarm passes; move the whole reconcile inside its try/catch, so a
damaged preferences file can't crash the process at launch; share one Calendars
query per provider tick across the flows that need it; and give the reworded
Settings hint new keys, so five locales stop rendering the retired app-only
wording.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jean-Luc Makiola
2026-07-25 13:16:55 +02:00
parent 41593a0e9d
commit ef48717e2c
28 changed files with 687 additions and 265 deletions
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6
app/src/main/res/values/strings.xml
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@@ -473,8 +473,10 @@
<string name="calendars_local_header">Your calendars</string>
<string name="calendars_local_empty">No local calendars yet. Create one to keep events on this device only.</string>
<string name="calendars_add">Add calendar</string>
<string name="calendars_disable_hint">Turn a calendar off to hide it on this device — its events disappear from the app and it stops reminding you. Nothing is deleted, no other device is affected, and you can turn it back on here anytime.</string>
<string name="calendars_show_in_app_a11y">Show \"%1$s\"</string>
<string name="calendars_visibility_hint">Turn a calendar off to hide it on this device — its events disappear from the app and it stops reminding you. This is the same switch your other calendar apps use, so they hide it too. Nothing is deleted, no other device is affected, and you can turn it back on here anytime.</string>
<string name="calendars_visibility_a11y">Show \"%1$s\"</string>
<string name="calendars_visibility_notice_title">Some calendars are switched off</string>
<string name="calendars_visibility_notice_message">Calendula now shows the calendars that are switched on for this device, so what you see and what reminds you can no longer disagree. Some of yours are currently off — they were switched off here or in another calendar app. Turn any of them back on in Settings → Calendars.</string>
<string name="calendars_synced_header">Synced calendars</string>
<string name="calendars_synced_hint">These come from accounts on your device. Create and edit them in their own app.</string>
<string name="calendars_manage_in_app">Manage in app</string>