mexc-rs 0.3.0

Rust client for the mexc.com exchange
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114

use async_trait::async_trait;
use rust_decimal::Decimal;
use chrono::{DateTime, Utc};
use crate::spot::MexcSpotApiClientWithAuthentication;
use crate::spot::v3::{ApiResponse, ApiResult};
use crate::spot::v3::enums::{OrderSide, OrderType};

#[derive(Debug)]
pub struct OrderParams<'a> {
    pub symbol: &'a str,
    pub side: OrderSide,
    pub order_type: OrderType,
    pub quantity: Option<Decimal>,
    pub quote_order_quantity: Option<Decimal>,
    pub price: Option<Decimal>,
    pub new_client_order_id: Option<&'a str>,
}

#[derive(Debug, serde::Serialize)]
#[serde(rename_all = "camelCase")]
pub struct OrderQuery<'a> {
    pub symbol: &'a str,
    pub side: OrderSide,
    #[serde(rename = "type")]
    pub order_type: OrderType,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub quantity: Option<Decimal>,
    #[serde(rename = "quoteOrderQty", skip_serializing_if = "Option::is_none")]
    pub quote_order_quantity: Option<Decimal>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub price: Option<Decimal>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub new_client_order_id: Option<&'a str>,
    /// Max 60000
    #[serde(skip_serializing_if = "Option::is_none")]
    pub recv_window: Option<u64>,
    #[serde(with = "chrono::serde::ts_milliseconds")]
    pub timestamp: DateTime<Utc>,
}

impl<'a> From<OrderParams<'a>> for OrderQuery<'a> {
    fn from(params: OrderParams<'a>) -> Self {
        Self {
            symbol: params.symbol,
            side: params.side,
            order_type: params.order_type,
            quantity: params.quantity,
            quote_order_quantity: params.quote_order_quantity,
            price: params.price,
            new_client_order_id: params.new_client_order_id,
            recv_window: None,
            timestamp: Utc::now(),
        }
    }
}

#[derive(Debug, serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct OrderOutput {
    pub symbol: String,
    pub order_id: String,
    pub order_list_id: Option<i32>,
    pub price: Decimal,
    pub orig_qty: Decimal,
    #[serde(rename = "type")]
    pub order_type: OrderType,
    pub side: OrderSide,
    #[serde(with = "chrono::serde::ts_milliseconds")]
    pub transact_time: DateTime<Utc>,
}


#[async_trait]
pub trait OrderEndpoint {
    async fn order(&self, params: OrderParams<'_>) -> ApiResult<OrderOutput>;
}

#[async_trait]
impl OrderEndpoint for MexcSpotApiClientWithAuthentication {
    async fn order(&self, params: OrderParams<'_>) -> ApiResult<OrderOutput> {
        let endpoint = format!("{}/api/v3/order", self.endpoint.as_ref());
        let query = OrderQuery::from(params);
        let query_with_signature = self.sign_query(query)?;

        let response = self.reqwest_client.post(&endpoint).query(&query_with_signature).send().await?;
        let api_response = response.json::<ApiResponse<OrderOutput>>().await?;
        let output = api_response.into_api_result()?;

        Ok(output)
    }
}

#[cfg(test)]
mod tests {
    use std::str::FromStr;
    use super::*;

    #[tokio::test]
    async fn test_order() {
        // Fails on insufficient balance
        let client = MexcSpotApiClientWithAuthentication::new_for_test();
        let params = OrderParams {
            symbol: "KASUSDT",
            side: OrderSide::Buy,
            order_type: OrderType::Limit,
            quantity: Some(Decimal::from(5000)),
            quote_order_quantity: None,
            price: Some(Decimal::from_str("0.001").unwrap()),
            new_client_order_id: None,
        };
        let result = client.order(params).await;
        assert!(result.is_ok());
    }
}