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//! Technical analysis module.

#[macro_use]
extern crate failure;

#[macro_use]
extern crate serde_derive;
extern crate rand;
extern crate serde;

extern crate cxmr_balances;
extern crate cxmr_feeds;
extern crate cxmr_orderbook;
extern crate cxmr_ta_core;
#[macro_use]
extern crate err_convert_macro;

mod impls;
mod indicators;
mod operation;

pub use self::indicators::*;
pub use self::operation::*;

pub mod traits {
    pub use cxmr_ta_core::{Close, High, Low, Next, Open, Volume};

    /// Orderbook trait.
    pub trait OrderBook {
        /// Returns orderbook state.
        fn orderbook(&self) -> Option<&cxmr_orderbook::OrderBook>;
    }

    /// Candle time trait.
    pub trait Time {
        /// Returns time in milliseconds.
        fn time(&self) -> u64;
    }

    /// Indicator state trait.
    pub trait State: Open + Close + Low + High + Volume + OrderBook + Time {}

    impl<T: Open + Close + Low + High + Volume + OrderBook + Time> State for T {}
}

/// Technical analysis module error.
#[derive(Debug, Fail)]
pub enum Error {
    /// Invalid indicator parameters.
    #[fail(display = "invalid indicator {:#?} parameters {:#?}.", _0, _1)]
    InvalidParams(Indicator, Params),
    /// Expected parameters for indicator.
    #[fail(display = "expected parameters for indicator {:#?}.", _0)]
    ExpectedParams(Indicator),
    /// Expected parameters for indicator.
    #[fail(display = "expected {} parameter for indicator {:#?}.", _1, _0)]
    ExpectedParameter(Indicator, usize),
    /// Indicator not implemented error.
    #[fail(display = "indicator {:#?} is not implemented.", _0)]
    IndicatorNotImplemented(Indicator),
    /// Technical analysis module error.
    #[fail(display = "{}", _0)]
    Ta(cxmr_ta_core::errors::Error),
}

err_converter!(Ta, cxmr_ta_core::errors::Error);

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