import type { AppDispatch } from "../../store/types";
import { type GetSublayState } from "../push/mintAccountAccessToken";
/**
 * The account-transition core.
 *
 * One sequence — validate → tear down → select → install — shared by every path
 * that makes a stored account the active one.
 *
 * **A plain function, deliberately not a hook.** The same sequence is needed
 * from `useSwitchAccount` (a hook), from `oauthCore` (a plain module), and from
 * the thunk bodies in `authThunks` — neither of the last two can call a hook,
 * so a `useAccountTransition` would have left them re-implementing it, which is
 * how the unwrap bug came to exist in six places at once.
 *
 * ─────────────────────────────────────────────────────────────────────────────
 * VALIDATE BEFORE COMMIT — why the order is what it is
 * ─────────────────────────────────────────────────────────────────────────────
 * This used to run teardown FIRST and only then discover whether the incoming
 * account's stored credential still worked. Because teardown is destructive,
 * switching to an account whose refresh token had died signed the user out of
 * the account they were happily using — and the rollback could only put the
 * *selection* back, never the session, because by then the outgoing account's
 * tokens were already gone.
 *
 * The credential is now proven out of band first, through
 * `leaseAccountSession`, which touches nothing the live session depends on.
 * Only once it answers does anything get torn down. A failure is therefore a
 * complete no-op against the current session: the call rejects, the user stays
 * exactly where they were, and the dead account is marked `needsReauth` so a
 * switcher can show it as needing a sign-in.
 *
 * **The LEASE, specifically — not the plain `mintAccountAccessToken`.** That is
 * the non-holding variant, and using it here would release the single flight
 * the instant the exchange settled, reopening the window this design exists to
 * close: something else could rotate again before the install landed, leaving
 * the live session holding a revoked token.
 *
 * Two things can be that "something else". A second transition into the same
 * account — `activateStoredAccount` is exported and has no re-entrancy guard of
 * its own, while `useSwitchAccount`'s in-progress flag is per-hook-instance
 * state set inside the async callback, so a double tap or two mounted switchers
 * both get through. And the per-account push toggle, which exchanges a stored
 * credential whenever the account it targets is not the active one. Push
 * reconciliation used to be a third; it no longer exchanges anything. See
 * `leaseAccountSession`.
 *
 * **The rotation count is unchanged.** The old order refreshed after the swap;
 * this one refreshes before it. One exchange either way — the validate step IS
 * the session-establishing exchange, not an extra probe. If this ever grows a
 * second exchange, that is a bug: the refresh endpoint rotates, and presenting
 * a revoked token destroys the account's whole token family.
 *
 * **Teardown still sits immediately before the install.** It exists to stop one
 * account's cached data rendering under another's name, and the gap between
 * them is where that can happen. Validating first does not widen that gap —
 * steps 2 and 3 below run back to back with no `await` between them.
 */
export declare const ACCOUNT_TRANSITION_FAILED_MESSAGE = "Could not restore the session for this account. Please sign in again.";
/**
 * Thrown when an account operation could not proceed — either because the
 * incoming account's stored refresh token could not be exchanged for a live
 * session, or because the account named is not in the map at all. Carries the
 * underlying reason as `message` when the server gave one.
 *
 * Two independent discriminants, because the three outcomes call for three
 * different responses and collapsing any two of them misleads the caller:
 *
 *   - `credentialRejected` — "the server refused this credential": expired,
 *     revoked, reuse-detected, invalidated by a password change or a remote
 *     sign-out-all. Only this one means the account needs a re-auth; treating a
 *     flaky network as a dead account would tell users to sign in again every
 *     time they lost signal.
 *   - `accountNotFound` — "there is no such account on this device". A caller
 *     bug or a stale id (a switcher rendered from a snapshot the map has since
 *     moved past), not a credential problem: nothing was attempted, nothing was
 *     marked, and re-authenticating would not help. Reported as a typed error
 *     rather than a bare `Error` so a caller can tell it apart without matching
 *     on message text it does not own.
 *   - both `false` — the exchange never got an answer, or the rotated successor
 *     could not be persisted. Worth a retry.
 *
 * They are never both `true`: an account that is not in the map has no
 * credential to have refused.
 */
export declare class AccountTransitionError extends Error {
    readonly credentialRejected: boolean;
    /**
     * `true` when the operation named an account that is not in the stored
     * account map. Additive — every pre-existing construction site leaves it
     * `false`.
     */
    readonly accountNotFound: boolean;
    constructor(message?: string, credentialRejected?: boolean, accountNotFound?: boolean);
}
export interface ActivateStoredAccountArgs {
    dispatch: AppDispatch;
    /**
     * The store's `getState`. Required: the validate step reads the target's
     * stored entry and has to write the rotated successor back through the same
     * persist path every other rotation goes through, and neither is reachable
     * from `dispatch` alone.
     */
    getState: GetSublayState;
    projectId: string;
    /** The account being switched INTO. Must already be in the accounts map. */
    userId: string;
    /**
     * That account's stored refresh token, as the caller read it.
     *
     * A consistency check, not the token that gets spent: the exchange reads the
     * entry from the store, because the entry is what the rotated successor has
     * to be written back into. An empty or missing value here fails the call
     * before any network request, which is the corrupt-map case (an interrupted
     * write, a hand-composed map) that used to report success with no session.
     */
    refreshToken: string;
    /**
     * The account that was active before this call. Retained for source
     * compatibility and for callers that log it; with validate-before-commit
     * there is no longer a rollback that needs it, because a failure never
     * changes the selection in the first place.
     */
    previousActiveAccountId?: string | null;
}
/**
 * Makes `userId` the active account and establishes its session.
 *
 * Resolves with the fresh access token.
 *
 * **Rejects** — with an `AccountTransitionError` — when the target's stored
 * credential cannot be exchanged for a session, and in that case **nothing has
 * been touched**: whatever session was live before the call is still live, with
 * its tokens, its user and its caches intact. The rejection is the only thing
 * that happened, plus a `needsReauth` marker on the target entry when the
 * server was the one that refused.
 *
 * The target's entry always survives a failure — it is the affordance an app
 * needs to prompt a re-auth for that account.
 *
 * **Naming an account the map does not hold rejects too, with
 * `accountNotFound`** — and that one marks nothing at all, not even
 * `signedOut`. There is no entry to mark and no credential to have refused.
 */
export declare function activateStoredAccount({ dispatch, getState, projectId, userId, refreshToken, }: ActivateStoredAccountArgs): Promise<string>;