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//! Crypto-bank WebSocket feed client.
#![feature(test, try_trait, box_syntax)]
#![recursion_limit = "256"]

#[macro_use]
extern crate log;
#[macro_use]
extern crate failure;
extern crate chrono;
extern crate futures;
extern crate hashbrown;
extern crate tokio;
extern crate websocket_lite;

extern crate cxmr_api_clients_errors;

extern crate cxmr_currency;
extern crate cxmr_exchanges;
extern crate cxmr_feeds;
#[macro_use]
extern crate err_convert_macro;

mod connect;
mod protocol;

pub use self::connect::*;
pub use self::protocol::*;

use futures::channel::mpsc::{UnboundedReceiver, UnboundedSender};

/// Market stream event sender.
pub type EventSender = UnboundedSender<cxmr_feeds::Events>;

/// Market stream event receiver.
pub type EventReceiver = UnboundedReceiver<cxmr_feeds::Events>;

/// Private stream event sender.
pub type PrivateEventSender = UnboundedSender<Vec<cxmr_feeds::UserEvent>>;

/// Private stream event receiver.
pub type PrivateEventReceiver = UnboundedReceiver<Vec<cxmr_feeds::UserEvent>>;

/// Crypto market error type.
#[derive(Debug, Fail)]
pub enum Error {
    /// Option is `None` error.
    #[fail(display = "option none")]
    OptionNone,

    /// Channel send error.
    #[fail(display = "channel send error")]
    TrySendError,

    /// URL parser error.
    #[fail(display = "url parser error: {:?}", _0)]
    Url(#[cause] url::ParseError),

    /// WebSocket module error.
    #[fail(display = "websocket error: {:?}", _0)]
    WebSocket(websocket_lite::Error),

    /// API clients module error.
    #[fail(display = "api client error: {:?}", _0)]
    Client(#[cause] cxmr_api_clients_errors::Error),

    /// Exchanges module error.
    #[fail(display = "exchange error: {:?}", _0)]
    Exchange(#[cause] cxmr_exchanges::Error),

    /// Currency module error.
    #[fail(display = "currency error: {:?}", _0)]
    Currency(#[cause] cxmr_currency::Error),

    /// Unexpected event kind.
    #[fail(display = "unexpected event kind: {}", _0)]
    UnexpectedEventKind(String),
}

err_converter!(Url, url::ParseError);
err_converter!(WebSocket, websocket_lite::Error);
err_converter!(Client, cxmr_api_clients_errors::Error);
err_converter!(Exchange, cxmr_exchanges::Error);
err_converter!(Currency, cxmr_currency::Error);
err_converter_no_args!(OptionNone, std::option::NoneError);
err_converter_with_into!(Client, std::num::ParseIntError);
err_converter_with_into!(Client, std::num::ParseFloatError);

impl<I> From<futures::channel::mpsc::TrySendError<I>> for Error {
    fn from(_err: futures::channel::mpsc::TrySendError<I>) -> Self {
        Error::TrySendError
    }
}

unsafe impl Send for Error {}
unsafe impl Sync for Error {}