The Communications surface. Hosts can schedule custom broadcasts to a
chosen audience (everyone / attending / pending / declined / maybe),
edit or cancel anything that hasn't fired, and review delivery
outcomes. Four auto-reminders are pre-seeded on every new event:
7-day, 3-day last call, 1-day, and day-of.
Schema (migration 0012)
- scheduled_messages — one row per message envelope, with status
walking draft -> scheduled -> sending -> sent (or cancelled/failed).
Partial index on (send_at) WHERE status='scheduled' for the
scheduler poll; per-event index for the Communications tab list.
- message_deliveries — per-recipient outcomes so a partial-failure
batch doesn't lose the rows that did succeed.
Domain
- MessageAudience / MessageChannel / MessageStatus enums
- SeedAutoReminders helper that returns four canonical reminder rows
for a given event_date, skipping any whose send_at would land in
the past (events created close to the date)
Storage
- MessageRepo: Create / CreateBatch / Get / ListByEvent / Update
(locks the row and refuses unless status is draft|scheduled) /
Cancel / PromoteToScheduled (the send-now path) / ListDue /
ClaimForSending (atomic guard against two replicas double-sending) /
MarkSent / MarkFailed / RecordDelivery / DeliveryStats /
LoadRecipients (audience-filtered guest list) / CountRecipients
- EventRepo.Create now seeds auto-reminders in the same transaction
that inserts the event and its owner collaborator row
API (all editor+, except recipient-count which is viewer+)
- GET /events/{id}/messages
- GET /events/{id}/messages/recipient-count?audience=...
- POST /events/{id}/messages (draft / schedule / send-now)
- PATCH /events/{id}/messages/{message_id}
- POST /events/{id}/messages/{message_id}/send-now
- DELETE /events/{id}/messages/{message_id}
Scheduler worker (cmd/notifier)
- New file scheduler.go: polls ListDue every 30s, claims each row
atomically (ClaimForSending uses a status=scheduled guard so two
notifier replicas don't double-send), renders subject and body
per recipient with the {{guest_name}} / {{event_name}} /
{{event_date}} / {{venue}} / {{rsvp_link}} placeholders, sends via
the existing GuestEmailDispatcher (Resend > SMTP > SES > log
stub, same picker as the API), records each delivery row.
Frontend
- New CommunicationsCard.vue with compose form (audience + channel +
subject + body + send-mode radios), live "X guests will receive
this" recipient-count preview, and three sub-tabs for Scheduled /
Sent / Cancelled. Per-message Send-now and Cancel actions for
draft/scheduled rows. Friendly labels for auto-seeded reminders
("1-day reminder", "Day-of reminder") so the slugs never leak.
- New top-level tab "Communications" on the event-detail page,
between Collaborators and Branding.
Tests
- TestAutoReminderSeeding confirms a future-dated event lands the
four canonical reminders in scheduled state.
- TestComposeAndEditMessage walks draft -> patch -> send-now ->
cancel and asserts the conflict on PATCH-after-cancel.
- TestRecipientCountAudienceFilter seeds a known guest mix and
checks every audience preset returns the right count.
- Full integration suite passes (~177s).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Kwaku Danso
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