-- Roll back t-paliad-064 reminder redesign schema.
--
-- Drops the partial dedup index, the new columns on paliad.users and
-- paliad.reminder_log, and restores the previous reminder_type CHECK
-- constraint. Reversible.

DROP INDEX IF EXISTS paliad.reminder_log_slot_dedup_idx;

ALTER TABLE paliad.reminder_log
    DROP CONSTRAINT IF EXISTS reminder_log_slot_check;

-- Narrow the reminder_type CHECK back to the original three values. Any
-- 'morning_digest' / 'evening_digest' rows must be deleted before this
-- runs, or the ALTER fails.
ALTER TABLE paliad.reminder_log
    DROP CONSTRAINT IF EXISTS reminder_log_reminder_type_check;
ALTER TABLE paliad.reminder_log
    ADD CONSTRAINT reminder_log_reminder_type_check
    CHECK (reminder_type IN ('overdue', 'tomorrow', 'weekly'));

ALTER TABLE paliad.reminder_log
    DROP COLUMN IF EXISTS slot,
    DROP COLUMN IF EXISTS slot_date;

ALTER TABLE paliad.users
    DROP CONSTRAINT IF EXISTS users_escalation_contact_self_check,
    DROP CONSTRAINT IF EXISTS users_reminder_warning_offset_check;

ALTER TABLE paliad.users
    DROP COLUMN IF EXISTS escalation_contact_id,
    DROP COLUMN IF EXISTS reminder_warning_offset_days;