-- Deferred card reconciliation.
--
-- An order paid "MasterCard Ending in 8032 and/or credits" does not state the
-- split. The split is recoverable from the card statement -- but for a live
-- order that statement is weeks away, so the split cannot be resolved at ingest
-- time. These columns let an order be parked and revisited.

ALTER TABLE expense_metadata ADD COLUMN IF NOT EXISTS card_last4 TEXT;
ALTER TABLE expense_metadata ADD COLUMN IF NOT EXISTS currency TEXT;
ALTER TABLE expense_metadata ADD COLUMN IF NOT EXISTS flags JSONB NOT NULL DEFAULT '[]';
ALTER TABLE expense_metadata ADD COLUMN IF NOT EXISTS reconciled_at TIMESTAMPTZ;

-- The pending set: provenance recorded, no transaction yet, still waiting on a
-- statement line. Partial so it stays small regardless of table growth.
CREATE INDEX IF NOT EXISTS idx_expense_metadata_pending
  ON expense_metadata (transaction_date)
  WHERE transaction_id IS NULL AND reconciled_at IS NULL;