create table if not exists public.commerce_adjustment_vouchers (
  id uuid primary key default gen_random_uuid(),
  tenant_id uuid not null references public.tenants(id) on delete cascade,
  voucher_no text not null,
  source_type text not null default 'manual'
    check (source_type in ('reconciliation_issue', 'reconciliation_item', 'order', 'payment', 'refund', 'manual')),
  source_id uuid,
  reconciliation_issue_id uuid references public.commerce_reconciliation_issues(id) on delete set null,
  reconciliation_item_id uuid references public.commerce_reconciliation_items(id) on delete set null,
  order_id uuid references public.orders(id) on delete set null,
  payment_id uuid references public.payments(id) on delete set null,
  refund_request_id uuid references public.commerce_refund_requests(id) on delete set null,
  order_no text,
  refund_no text,
  provider text,
  provider_trade_no text,
  provider_refund_no text,
  adjustment_type text not null default 'other'
    check (adjustment_type in (
      'manual_payment_confirm',
      'refund_correction',
      'provider_confirmed',
      'local_corrected',
      'write_off',
      'duplicate',
      'other'
    )),
  direction text not null default 'none'
    check (direction in ('increase', 'decrease', 'none')),
  amount_cents integer not null default 0 check (amount_cents >= 0),
  status text not null default 'draft'
    check (status in ('draft', 'submitted', 'approved', 'rejected', 'voided')),
  title text not null,
  description text,
  asset_id uuid references public.content_assets(id) on delete set null,
  external_url text,
  submitted_by uuid references public.platform_users(id) on delete set null,
  submitted_at timestamptz,
  reviewed_by uuid references public.platform_users(id) on delete set null,
  reviewed_at timestamptz,
  review_note text,
  voided_by uuid references public.platform_users(id) on delete set null,
  voided_at timestamptz,
  metadata jsonb not null default '{}'::jsonb,
  created_by uuid references public.platform_users(id) on delete set null,
  created_at timestamptz not null default now(),
  updated_at timestamptz not null default now(),
  unique (tenant_id, voucher_no)
);

create table if not exists public.commerce_adjustment_voucher_events (
  id uuid primary key default gen_random_uuid(),
  tenant_id uuid not null references public.tenants(id) on delete cascade,
  voucher_id uuid not null references public.commerce_adjustment_vouchers(id) on delete cascade,
  from_status text,
  to_status text,
  event_type text not null,
  actor_user_id uuid references public.platform_users(id) on delete set null,
  note text,
  details jsonb not null default '{}'::jsonb,
  created_at timestamptz not null default now(),
  check (from_status is null or from_status in ('draft', 'submitted', 'approved', 'rejected', 'voided')),
  check (to_status is null or to_status in ('draft', 'submitted', 'approved', 'rejected', 'voided'))
);

create index if not exists idx_commerce_adjustment_vouchers_tenant_status
  on public.commerce_adjustment_vouchers(tenant_id, status, created_at desc);

create index if not exists idx_commerce_adjustment_vouchers_source
  on public.commerce_adjustment_vouchers(tenant_id, source_type, source_id, created_at desc);

create index if not exists idx_commerce_adjustment_vouchers_issue
  on public.commerce_adjustment_vouchers(tenant_id, reconciliation_issue_id, status, created_at desc);

create index if not exists idx_commerce_adjustment_vouchers_order
  on public.commerce_adjustment_vouchers(tenant_id, order_no, status, created_at desc);

create index if not exists idx_commerce_adjustment_voucher_events_voucher
  on public.commerce_adjustment_voucher_events(tenant_id, voucher_id, created_at desc);

alter table public.commerce_adjustment_vouchers enable row level security;
alter table public.commerce_adjustment_voucher_events enable row level security;

drop policy if exists tenant_isolation on public.commerce_adjustment_vouchers;
create policy tenant_isolation on public.commerce_adjustment_vouchers
  for all
  using (tenant_id = app.current_tenant_id() or app.is_platform_admin())
  with check (tenant_id = app.current_tenant_id() or app.is_platform_admin());

drop policy if exists tenant_isolation on public.commerce_adjustment_voucher_events;
create policy tenant_isolation on public.commerce_adjustment_voucher_events
  for all
  using (tenant_id = app.current_tenant_id() or app.is_platform_admin())
  with check (tenant_id = app.current_tenant_id() or app.is_platform_admin());

drop trigger if exists set_updated_at on public.commerce_adjustment_vouchers;
create trigger set_updated_at
  before update on public.commerce_adjustment_vouchers
  for each row execute function app.touch_updated_at();