-- Budget Workbook: standalone worksheet state (chosen month + per-line inflation %
-- and overrides) for the Budget Workbook page. Computed values come from the GL at
-- runtime; only the user's edits are persisted here. Company-scoped, RLS mirrors
-- accounting.accounts (accounting staff OR company member).

create table if not exists accounting.budget_workbooks (
  id uuid primary key default gen_random_uuid(),
  company_id uuid not null references accounting.companies(id) on delete cascade,
  fiscal_year int not null,
  through_month int not null default 1,
  created_at timestamptz not null default now(),
  updated_at timestamptz not null default now(),
  unique (company_id, fiscal_year)
);

create table if not exists accounting.budget_workbook_lines (
  id uuid primary key default gen_random_uuid(),
  workbook_id uuid not null references accounting.budget_workbooks(id) on delete cascade,
  account_id uuid not null references accounting.accounts(id) on delete cascade,
  ytd_override numeric,
  inflation_pct numeric,
  projected_override numeric,
  unique (workbook_id, account_id)
);

alter table accounting.budget_workbooks enable row level security;
alter table accounting.budget_workbook_lines enable row level security;

create policy "wb staff" on accounting.budget_workbooks for all to authenticated
  using (accounting.is_accounting_staff()) with check (accounting.is_accounting_staff());
create policy "wb members" on accounting.budget_workbooks for all to authenticated
  using (accounting.is_company_member(company_id, auth.uid())) with check (accounting.is_company_member(company_id, auth.uid()));

create policy "wbl staff" on accounting.budget_workbook_lines for all to authenticated
  using (accounting.is_accounting_staff()) with check (accounting.is_accounting_staff());
create policy "wbl members" on accounting.budget_workbook_lines for all to authenticated
  using (exists (select 1 from accounting.budget_workbooks w where w.id = workbook_id and accounting.is_company_member(w.company_id, auth.uid())))
  with check (exists (select 1 from accounting.budget_workbooks w where w.id = workbook_id and accounting.is_company_member(w.company_id, auth.uid())));

grant select, insert, update, delete on accounting.budget_workbooks to authenticated;
grant select, insert, update, delete on accounting.budget_workbook_lines to authenticated;