begin;

-- BUG-353: period_only declarations are a start/end clock window, not a
-- coarse bucket plus free-text clue. Rectification and window consultation
-- read these columns; birth_time_period remains a legacy fallback.

alter table public.profiles
  add column if not exists declared_window_start text,
  add column if not exists declared_window_end text;

alter table public.profiles
  drop constraint if exists profiles_declared_window_clocks;

alter table public.profiles
  add constraint profiles_declared_window_clocks check (
    (declared_window_start is null and declared_window_end is null)
    or (
      declared_window_start ~ '^([01][0-9]|2[0-3]):[0-5][0-9]$'
      and declared_window_end ~ '^([01][0-9]|2[0-3]):[0-5][0-9]$'
      and declared_window_start is distinct from declared_window_end
    )
  );

update public.profiles
set
  declared_window_start = case birth_time_period
    when 'early_morning' then '04:00'
    when 'morning' then '08:00'
    when 'afternoon' then '12:00'
    when 'evening' then '18:00'
    when 'late_night' then '23:00'
    else declared_window_start
  end,
  declared_window_end = case birth_time_period
    when 'early_morning' then '07:59'
    when 'morning' then '11:59'
    when 'afternoon' then '17:59'
    when 'evening' then '22:59'
    when 'late_night' then '03:59'
    else declared_window_end
  end
where birth_time_source = 'period_only'
  and declared_window_start is null
  and declared_window_end is null
  and birth_time_period in ('early_morning', 'morning', 'afternoon', 'evening', 'late_night');

grant select (
  declared_window_start,
  declared_window_end
) on table public.profiles to service_role;

grant insert (
  declared_window_start,
  declared_window_end
) on table public.profiles to service_role;

grant update (
  declared_window_start,
  declared_window_end
) on table public.profiles to service_role;

commit;