/**
 * Codex account enumeration + usage/quota normalisation.
 *
 * Mirrors `accountUsage.ts` (Anthropic) for the Codex pool. Codex reports two
 * rate-limit windows — `primary` (short) and `secondary` (weekly) — which we
 * map onto the shared AccountQuota session/weekly fields so the same routing,
 * cooldown, and display code works for both providers.
 */
import type { CodexProxyStatusAccountIdentity } from "../types/index.js";
import type { AccountQuota, CodexRateLimits, CodexUsageFetchResult, ProxyPassthroughAccount } from "../types/index.js";
export declare const CODEX_ACCOUNT_PREFIX = "codex:";
/** Keep an account label in the Codex namespace used by its token store. */
export declare function normalizeCodexAccountKey(value: string): string;
/** Resolve the provider-qualified key used to render a proxy status row. */
export declare function resolveProxyStatusAccountIdentity(label: string, type: string, persistedKey?: string): CodexProxyStatusAccountIdentity;
/** Enumerate Codex OAuth accounts from the token store for usage refresh. */
export declare function listCodexAccountsForUsage(): Promise<ProxyPassthroughAccount[]>;
/** Normalise a Codex rate-limit block into the shared AccountQuota shape. */
export declare function codexRateLimitsToQuota(rateLimits: CodexRateLimits | null | undefined, now?: number): AccountQuota;
/**
 * Parse Codex rate-limit information from response headers. The ChatGPT backend
 * returns a JSON rate-limit blob in `x-codex-ratelimit` / `x-codex-active-limit`
 * on some responses; parse defensively and return null when absent.
 */
export declare function parseCodexRateLimitHeaders(headers: Headers, now?: number): AccountQuota | null;
/** Fetch the usage/limits window for one Codex account. */
export declare function fetchCodexAccountUsage(account: ProxyPassthroughAccount, options?: {
    timeoutMs?: number;
}): Promise<CodexUsageFetchResult>;
/** Decode plan type from an account's access token (display convenience). */
export declare function codexAccountPlanType(account: ProxyPassthroughAccount): string | undefined;