-- +goose Up
-- Stage 11 account linking & merge: retire a secondary account into a primary one.
-- merged_into/merged_at turn the secondary into an audit tombstone (its identities
-- are repointed and its non-shared rows transferred to the primary, but the row is
-- kept so the no-cascade game_players/chat/complaints foreign keys of any shared
-- finished game stay valid). merged_into self-references accounts and is SET NULL on
-- delete so a future guest reaper (PLAN.md TODO-3) can still remove a primary.
-- paid_account is a forward-looking lifetime one-time-payment marker (no purchase
-- flow yet); the merge ORs it so a paid status is never lost. Adds columns, so the
-- generated jet code is regenerated (cmd/jetgen).
SET search_path = backend, pg_catalog;

ALTER TABLE accounts
    ADD COLUMN paid_account boolean     NOT NULL DEFAULT false,
    ADD COLUMN merged_into  uuid        REFERENCES accounts (account_id) ON DELETE SET NULL,
    ADD COLUMN merged_at    timestamptz;

-- +goose Down
SET search_path = backend, pg_catalog;

ALTER TABLE accounts
    DROP COLUMN merged_at,
    DROP COLUMN merged_into,
    DROP COLUMN paid_account;