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use super::Binance;
use crate::instrument::{KeyedInstrument, MarketInstrumentData};
use crate::{subscription::Subscription, Identifier};
use barter_integration::model::instrument::symbol::Symbol;
use barter_integration::model::instrument::Instrument;
use serde::{Deserialize, Serialize};

/// Type that defines how to translate a Barter [`Subscription`] into a [`Binance`]
/// market that can be subscribed to.
///
/// See docs: <https://binance-docs.github.io/apidocs/spot/en/#websocket-market-streams>
/// See docs: <https://binance-docs.github.io/apidocs/futures/en/#websocket-market-streams>
#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Deserialize, Serialize)]
pub struct BinanceMarket(pub String);

impl<Server, Kind> Identifier<BinanceMarket> for Subscription<Binance<Server>, Instrument, Kind> {
    fn id(&self) -> BinanceMarket {
        binance_market(&self.instrument.base, &self.instrument.quote)
    }
}

impl<Server, Kind> Identifier<BinanceMarket>
    for Subscription<Binance<Server>, KeyedInstrument, Kind>
{
    fn id(&self) -> BinanceMarket {
        binance_market(
            &self.instrument.as_ref().base,
            &self.instrument.as_ref().quote,
        )
    }
}

impl<Server, Kind> Identifier<BinanceMarket>
    for Subscription<Binance<Server>, MarketInstrumentData, Kind>
{
    fn id(&self) -> BinanceMarket {
        BinanceMarket(self.instrument.name_exchange.clone())
    }
}

impl AsRef<str> for BinanceMarket {
    fn as_ref(&self) -> &str {
        &self.0
    }
}

fn binance_market(base: &Symbol, quote: &Symbol) -> BinanceMarket {
    // Notes:
    // - Must be lowercase when subscribing (transformed to lowercase by Binance fn requests).
    // - Must be uppercase since Binance sends message with uppercase MARKET (eg/ BTCUSDT).
    BinanceMarket(format!("{base}{quote}").to_uppercase())
}