type AuthTokens = {
  access: string,
  refresh: string,
  expires: number
};

// Supported exchanges
type Exchange = 'NYSE' | 'NASDAQ' | 'TSX' | 'TSX-V' | 'NEO' | 'CC';

/**
 * A ticker may be provided to the API as a string or an object with
 * well-defined attributes of symbol, exchange, or id.
 *
 * @param {string} symbol symbol that the security trades under.
 * @param {string} [exchange] exchange under which the security trades in
 * @param {string} [id] The internal Wealthsimple Trade security id
 */
type Ticker = string | {
  symbol: string,
  exchange?: Exchange,
  id?: string
};

export namespace auth {

  /**
   * Supported Auth Events at this time.
   */
  type AuthEvent = 'otp' | 'refresh';

  /**
   * Supported auth events:
   *
   * 'otp':
   * - Invoked during a login attempt to retrieve an OTP code
   * - Handler type:
   *     - A function: If you provide a function, this function is triggered whenever the event associated
   *     with it occurs.
   *     - A string: Appropriate for simple value passing (e.g., providing OTP manually for logging in)
   *
   * 'refresh':
   * - Invoked when the authentication state has been successfully refreshed.
   * - Handler type:
   *     - A function: Receives `tokens` as an argument and is not expected to return anything
   **/
   type OTPEvent = string | (() => string | Promise<string>);
   type RefreshEvent = ((tokens: AuthTokens) => Promise<void>);
   type AuthEventHandler =  OTPEvent | RefreshEvent;

  /**
   * One-Time Passwords (OTP) are mandatory to login to your Wealthsimple Trade account.
   * However, wstrade-api does not have the ability to get the OTP token for you (for obvious reasons).
   * So, in order to successfuly login, you must provide the OTP code that wstrade-api can use to
   * complete a successful login.
   */
  const otp: AuthEventHandler;

  /**
   * Attach a handler for the event.
   *
   * @param event authentication event to handle
   * @param handler Handler for the authentication event
   */
  function on(event: AuthEvent, handler: AuthEventHandler): void;

  /**
   * Initialize the auth module with an existing state of tokens.
   * The state provided should contain access, refresh, and expires properties.
   *
   * @param state Pre-existing authentication state
   */
  function use(state: AuthTokens): void;

  /**
   * Snapshot of the current authentication tokens.
   */
  function tokens(): AuthTokens;

  /**
   * Attempt a login with the email and password combination. A successful login
   * will populate the auth.tokens object.
   *
   * @param email Account email
   * @param password Account password
   */
  function login(email: string, password: string): Promise<void>;

  /**
   * Refreshes the set of tokens for the auth module
   * 
   * The refresh token must be present for this refresh call
   * to succeed.
   */
  function refresh(): Promise<void>;
}

export namespace headers {

  /**
   * Appends a header name-value pair to all requests.
   * 
   * @param {*} name Header key
   * @param {*} value Header value
   */
  function add(name: string, value: string): void;

  /**
   * Removes a custom header from all requests.
   * 
   * @param {*} name Header key
   */
  function remove(name: string): void;

  /**
   * Clears all custom headers.
   */
  function clear(): void;

  /**
   * Produces a list of custom headers.
   */
  function values(): Array<String>;
}

export namespace accounts {

  /**
   * A Wealthsimple Trade account can have 4 underlying asset accounts: Personal, TFSA, RRSP, and Crypto.
   * AccountList is the object returned by the accounts.all(), associating any open account types
   * with their ids.
   * 
   * You will need these account ids to perform certain API calls like checking the positions in a specific
   * account.
   */
  type AccountList = {
    personal?: string,
    tfsa?: string,
    rrsp?: string,
    crypto?: string,
  };

  // supported activity types
  type ActivityType = 'sell' | 'buy' | 'deposit' | 'withdrawal' | 'dividend' | 'institutional_transfer' |
    'internal_transfer' | 'refund' | 'referral_bonus' | 'affiliate';

  // filters that can be provided to the activities() API.
  type ActivitiesFilters = {
    limit?: number,
    accounts?: String[],
    type?: ActivityType[]
  };

  /**
   * The set of time intervals that are supported by the accounts.history() API call.
   */
  type HistoryInterval = '1d' | '1w' | '1m' | '3m' | '1y' | 'all';

  /**
   * Retrieves all open account ids under this Wealthsimple Trade account.
   */
  function all(): Promise<AccountList>;

  /**
   * Retrieves the top-level data of the account, including Wealthsimple Trade account id, account types,
   * account values, and more.
   */
  function data(): Promise<any>;

  /**
   * Retrieves some surface information about you like your name and email, account
   * signatures, and other metadata.
   */
  function me(): Promise<any>;

  /**
   * Detailed information about you that you provided on signup, like residential and
   * mailing addresses, employment, phone numbers, and so on.
   */
  function person(): Promise<any>;

  /**
   * Query the history of the account within a certain time interval.
   *
   * @param {*} interval The time interval for the history query
   * @param {*} accountId The account to grab history for
   */
  function history(interval: HistoryInterval, accountId: string): Promise<any>;

  /**
   * Fetches activities on your Wealthsimnple Trade account. You can limit number of activities
   * to fetch or refine what activities are fetched based on activity type (e.g., buy, sell),
   * account (e.g., tfsa, rrsp).
   */
  function activities(filters?: ActivitiesFilters): Promise<any>;

  /**
   * Retrieves all bank accounts linked to the Wealthsimple Trade account.
   */
  function getBankAccounts(): Promise<any>;

  /**
   * Grab all deposit records on the Wealthsimple Trade account.
   */
  function deposits(): Promise<any>;

  /**
   * Lists all positions in the specified trading account under the Wealthsimple Trade Account.
   * 
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   */
  function positions(accountId: string): Promise<any>;
}

export namespace orders {

  /**
   * Collects orders (filled, pending, cancelled) for the provided page and
   * account id.
   *
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   * @param {*} page The orders page index to seek to
   */
  function page(accountId: string, page: number): Promise<any>;

  /**
   * Collects all orders (filled, pending, cancelled) for the specific account.
   *
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   */
  function all(accountId: string): Promise<any>;

  /**
   * Retrieves pending orders for the specified security in the account.
   *
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   * @param {*} ticker (optional) The security symbol
   */
  function pending(accountId: string, ticker?: Ticker): Promise<any>;

  /**
   * Retrieves filled orders for the specified security in the account.
   *
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   * @param {*} ticker (optional) The security symbol
   */
  function filled(accountId: string, ticker?: Ticker): Promise<any>;

  /**
   * Retrieves cancelled orders for the specified security in the account.
   *
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   * @param {*} ticker (optional) The security symbol
   */
  function cancelled(accountId: string, ticker?: Ticker): Promise<any>;

  /**
   * Cancels the pending order specified by the order id.
   *
   * @param {*} orderId The pending order to cancel
   */
  function cancel(orderId: string): Promise<any>;

  /**
   * Cancels all pending orders under the open account specified by accountId.
   *
   * @param {*} accountId The specific account in the Wealthsimple Trade account
   */
  function cancelPending(accountId: string): Promise<any>;

  /**
   * Purchase a security with a market order.
   *
   * @param {*} accountId The account to make the transaction from
   * @param {*} ticker The security symbol
   * @param {*} quantity The number of securities to purchase
   */
  function marketBuy(accountId: string, ticker: Ticker, quantity: number): Promise<any>;

  /**
   * Purchase a security with a limit order.
   *
   * @param {*} accountId The account to make the transaction from
   * @param {*} ticker The security symbol
   * @param {*} limit The maximum price to purchase the security at
   * @param {*} quantity The number of securities to purchase
   */
  function limitBuy(accountId: string, ticker: Ticker, limit: number, quantity: number): Promise<any>;

  /**
   * Purchase a security with a stop limit order.
   *
   * @param {*} accountId The account to make the transaction from
   * @param {*} ticker The security symbol
   * @param {*} stop The price at which the order converts to a limit order
   * @param {*} limit The maximum price to purchase the security at
   * @param {*} quantity The number of securities to purchase
   */
  function stopLimitBuy(accountId: string, ticker: Ticker, stop: number, limit: number, quantity: number): Promise<any>;

  /**
   * Sell a security with a market order.
   *
   * @param {*} accountId The account to make the transaction from
   * @param {*} ticker The security symbol
   * @param {*} quantity The number of securities to purchase
   */
  function marketSell(accountId: string, ticker: Ticker, quantity: number): Promise<any>;

  /**
   * Sell a security with a limit order.
   *
   * @param {*} accountId The account to make the transaction from
   * @param {*} ticker The security symbol
   * @param {*} limit The minimum price to sell the security at
   * @param {*} quantity The number of securities to sell
   */
  function limitSell(accountId: string, ticker: Ticker, limit: number, quantity: number): Promise<any>;

  /**
   * Sell a security with a stop limit order.
   *
   * @param {*} accountId The account to make the transaction from
   * @param {*} ticker The security symbol
   * @param {*} stop The price at which the order converts to a limit order
   * @param {*} limit The minimum price to sell the security at
   * @param {*} quantity The number of securities to sell
   */
  function stopLimitSell(accountId: string, ticker: Ticker, stop: number, limit: number, quantity: number): Promise<any>;
}

export namespace quotes {

  /**
   * The quotes module provides support for customizing the source of quotes
   * for specified exchanges through the QuoteProvider type.
   * 
   * Pass a QuoteProvider object to quotes.use(), and your custom quote provider
   * will be used for the exchange you enable it for.
   */
  type QuoteProvider = {
    quote: (ticker: Ticker) => Promise<number>;
  };

  // Historical intervals for quotes
  type QuotesInterval = '1d' | '1w' | '1m' | '3m' | '1y' | '5y';

  /**
   * Wealthsimple Trade is our default quote provider for all exchanges,
   * despite having a 15-minute delay.
   */
  const defaultProvider: QuoteProvider;

  /**
   * Load a custom provider for the exchange.
   * 
   * @param {*} exchange The exchange that the provider fetches quotes for
   * @param {*} provider The provider object containing the quote() implementation.
   */
  function use(exchange: Exchange, provider: QuoteProvider): void;

  /**
   * Obtains a quote for the ticker. The source of the quote may be a custom
   * provider if a valid provider is registered for the exchange that the
   * ticker trades on.
   *
   * @param {*} ticker The security to get a quote for.
   */
  function get(ticker: Ticker): Promise<number>;

  /**
   * Retrieves the historical quotes within a specified interval for the ticker.
   * The source of the historical data is not customizable at this time because
   * there is no need for it to be so.
   *
   * @param {*} ticker The ticker to search historical quotes for
   * @param {*} interval The time range of the quotes
   */
  function history(ticker: Ticker, interval: QuotesInterval): Promise<Array<any>>;
}

export namespace data {

  /**
   * A snapshot of the current USD/CAD exchange rates on the Wealthsimple Trade
   * platform.
   */
  function exchangeRates(): Promise<any>;

  /**
   * Information about a security on the Wealthsimple Trade Platform.
   *
   * @param {Ticker} ticker The security symbol.
   * @param {boolean} extensive Pulls a more detailed report of the security using the /securities/{id} API
   */
  function getSecurity(ticker: Ticker, extensive?: boolean): Promise<any>;

  /**
   * Fetches a mapping of all security groups (available on the Trade platform) to
   * their group ids.
   */
  function securityGroups(): Promise<any>;

  /**
   * Retrieves all securities associated with the group name or id.
   *
   * - If you provide the group name, we will automatically do a lookup
   * from the Trade servers to get its identifier.
   *
   * - Alternatively, You can get a list of all groups (with their group ids) from
   * data.groups() and provide the group identifier directly.
   *
   * @param {*} group The security group name or identifier
   */
  function getSecurityGroup(group: string): Promise<Array<any>>;
}


/**
 * Enable or disable an optional feature within wstrade-api.
 *
 * Examples:
 * ---
 * config('implicit_token_refresh')
 * Enables implicit refreshing of tokens.
 *
 * config('no_implicit_token_refresh')
 * Disables implicit refreshing of tokens.
 *
 * @param {*} feature The string identifier for the feature, starting with "no_" if
 *                    you wish to disable it.
 */
export function config(feature: string): void;


type TradeAPI = {
  auth: typeof auth,
  headers: typeof headers,
  accounts: typeof accounts,
  orders: typeof orders,
  quotes: typeof quotes,
  data: typeof data,
  config: typeof config
};

/**
 * Create a new Trade API object with its own authentication state.
 * This is useful if you are managing several Trade accounts.
 */
export function Session(): TradeAPI;