crypto-markets 1.3.11

Fetch trading markets from a cryptocurrency exchange
Documentation 
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use crypto_market_type::MarketType;
use serde::{Deserialize, Serialize};
use serde_json::{Map, Value};

#[derive(Clone, Serialize, Deserialize)]
pub struct Fees {
    pub maker: f64,
    pub taker: f64,
}

#[derive(Clone, Serialize, Deserialize)]
pub struct Precision {
    /// the minimum price change, see https://en.wikipedia.org/wiki/Tick_size
    pub tick_size: f64,
    /// the minimum quantity change
    pub lot_size: f64,
}

#[derive(Clone, Serialize, Deserialize, PartialEq)]
pub struct QuantityLimit {
    /// Minimum base quantity
    #[serde(skip_serializing_if = "Option::is_none")]
    pub min: Option<f64>,
    /// Maximum base quantity
    #[serde(skip_serializing_if = "Option::is_none")]
    pub max: Option<f64>,
    /// Notional minimum size
    #[serde(skip_serializing_if = "Option::is_none")]
    pub notional_min: Option<f64>,
    /// Notional maximum size
    #[serde(skip_serializing_if = "Option::is_none")]
    pub notional_max: Option<f64>,
}

/// Market contains all information about a market
#[derive(Clone, Serialize, Deserialize)]
pub struct Market {
    /// exchange name
    pub exchange: String,
    /// Market type
    pub market_type: MarketType,
    /// exchange-specific trading symbol, recognized by RESTful API, equivalent
    /// to ccxt's Market.id.
    pub symbol: String,
    /// exchange-specific base currency
    pub base_id: String,
    /// exchange-specific quote currency
    pub quote_id: String,
    /// exchange-specific settlement currency, i.e., collateral currency, always
    /// None for spot markets
    #[serde(skip_serializing_if = "Option::is_none")]
    pub settle_id: Option<String>,
    /// unified uppercase string of base fiat or crypto currency
    pub base: String,
    /// unified uppercase string of quote fiat or crypto currency
    pub quote: String,
    /// settlement currency, i.e., collateral currency, always None for spot
    /// markets
    #[serde(skip_serializing_if = "Option::is_none")]
    pub settle: Option<String>,
    /// market status
    pub active: bool,
    /// Margin enabled.
    ///
    /// * All contract markets are margin enabled, including future, swap and
    ///   option.
    /// * Only a few exchanges have spot market with margin enabled.
    pub margin: bool,
    pub fees: Fees,
    /// number of decimal digits after the dot
    pub precision: Precision,
    /// the min and max values of quantity
    #[serde(skip_serializing_if = "Option::is_none")]
    pub quantity_limit: Option<QuantityLimit>,
    // The value of one contract, not applicable to sport markets
    #[serde(skip_serializing_if = "Option::is_none")]
    pub contract_value: Option<f64>,
    /// Delivery date, unix timestamp in milliseconds, only applicable for
    /// future and option markets.
    #[serde(skip_serializing_if = "Option::is_none")]
    pub delivery_date: Option<u64>,
    /// the original JSON string retrieved from the exchange
    pub info: Map<String, Value>,
}