-- +goose Up
-- account_stats gains two lifetime counters for the player's statistics screen: moves — the
-- player's plays (tile placements; passes and exchanges do not count) — and hints_used — every
-- hint the player took (the free per-game allowance plus the wallet-charged ones). Both are
-- summed at game finish over the same games that feed the rest of account_stats (durable
-- non-guest accounts; honest-AI games are skipped), so the screen can show the "hint share"
-- = hints_used / moves. See docs/ARCHITECTURE.md §9.
SET search_path = backend, pg_catalog;

ALTER TABLE account_stats ADD COLUMN moves      integer NOT NULL DEFAULT 0;
ALTER TABLE account_stats ADD COLUMN hints_used integer NOT NULL DEFAULT 0;

-- +goose Down
SET search_path = backend, pg_catalog;
ALTER TABLE account_stats DROP COLUMN hints_used;
ALTER TABLE account_stats DROP COLUMN moves;