import { ClientConfigError, CodeResponse, CredentialResponse, GoogleAccounts, PromptMomentNotification } from "./types.mjs";
//#region src/google-one-tap/index.d.ts
declare global {
  interface Window {
    /** Set by the external GSI script once it loads — absent until then. */
    google?: {
      accounts: GoogleAccounts;
    };
  }
}
type Props = {
  /**
   * Opaque nonce string forwarded as-is to Google. Google echoes it back in
   * the ID Token's `nonce` claim per the OIDC spec; the caller is responsible
   * for any hashing/encoding required by its verifier.
   */
  nonce?: string;
  client_id: string;
  auto_select?: boolean;
  cancel_on_tap_outside?: boolean;
  use_fedcm_for_prompt?: boolean;
};
type PromptMoment = {
  skipped: boolean;
  dismissed: boolean;
  dismissedReason: ReturnType<PromptMomentNotification['getDismissedReason']>;
};
/**
 * Why prompt() could not run One Tap, so the caller can decide to fall back
 * to requestCode().
 * - `fedcm_unsupported`: browser has no FedCM (Safari/Firefox/pre-117 Chrome).
 * - `script_load_failed`: the GSI script failed to load (network/CSP).
 * - `prompt_error`: GIS threw synchronously while initializing/prompting.
 */
type UnsupportedReason = 'fedcm_unsupported' | 'script_load_failed' | 'prompt_error';
type PromptResult = {
  authorized: true;
  credential: CredentialResponse;
} | {
  authorized: false;
  moment: PromptMoment;
} | {
  authorized: false;
  unsupported: true;
  reason: UnsupportedReason;
};
/** debug: chrome://settings/content/federatedIdentityApi */
declare function prompt({ nonce, client_id, auto_select, use_fedcm_for_prompt, cancel_on_tap_outside }: Props): Promise<PromptResult>;
type CodeProps = {
  client_id: string;
  /**
   * Space-delimited OAuth scopes. Defaults to OpenID Connect scopes so the
   * backend can exchange the code for an ID token, mirroring One Tap's intent.
   */
  scope?: string;
  /** 'popup' resolves the returned promise; 'redirect' navigates away and never resolves. */
  ux_mode?: 'popup' | 'redirect';
  /** Required when ux_mode is 'redirect'; for 'popup' Google uses postMessage. */
  redirect_uri?: string;
  state?: string;
  login_hint?: string;
  hd?: string;
};
type CodeResult = {
  ok: true;
  response: CodeResponse;
} | {
  ok: false;
  error: ClientConfigError | CodeResponse;
};
/**
 * OAuth 2.0 authorization-code fallback for environments where One Tap / FedCM
 * is unavailable (i.e. prompt() resolved with `unsupported: true`). It reuses
 * the same GSI script, so there is no extra dependency.
 *
 * Unlike One Tap it returns an authorization `code` for the backend to
 * exchange, not an ID token, and it must be triggered by a user gesture or the
 * popup may be blocked.
 */
declare function requestCode({ client_id, scope, ux_mode, redirect_uri, state, login_hint, hd }: CodeProps): Promise<CodeResult>;
//#endregion
export { CodeProps, CodeResult, PromptMoment, PromptResult, Props, UnsupportedReason, prompt, requestCode };
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