119 lines
4.5 KiB
C#
119 lines
4.5 KiB
C#
using Knoks.Core.Entities;
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using Knoks.Core.Logic.Interfaces;
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using Newtonsoft.Json;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.Http;
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using System.Threading.Tasks;
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namespace Knoks.Core.Exchanges
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{
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public class OKExExchange : IExchange
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{
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#region Members
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internal class TickerType
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{
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/*
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{"date":"1535960855",
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"ticker":{"high":7320,"vol":3276506,"day_high":0,"last":7227.22,
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"low":7181.84,"contract_id":201809070000034,"buy":7228.56,"sell":7231.02,
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"coin_vol":0,"day_low":0,"unit_amount":100}}
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*/
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public object this[string propertyName]
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{
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get { return this.GetType().GetProperty(propertyName).GetValue(this, null); }
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set { this.GetType().GetProperty(propertyName).SetValue(this, value, null); }
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}
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public TickerItemType Ticker { get; set; }
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[JsonProperty(PropertyName = "date")]
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public long Timestamp { get; set; }
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}
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internal class TickerItemType
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{
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public object this[string propertyName]
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{
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get { return this.GetType().GetProperty(propertyName).GetValue(this, null); }
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set { this.GetType().GetProperty(propertyName).SetValue(this, value, null); }
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}
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public decimal Low { get; set; }
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public decimal High { get; set; }
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[JsonProperty(PropertyName = "last")]
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public decimal Last { get; set; }
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[JsonProperty(PropertyName = "vol")]
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public decimal Volume { get; set; }
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}
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private ExchangeSettings settings;
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#endregion
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/// <summary>
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/// ctor
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/// </summary>
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/// <param name="settings"></param>
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public OKExExchange(ExchangeSettings settings)
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{
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this.settings = settings;
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this.settings.ApiUrl = settings.ApiUrl ?? "https://www.okex.com/api/v1/";
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}
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public async Task<IEnumerable<Ticker>> GetMarkets()
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{
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HttpClient client = new HttpClient();
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HttpResponseMessage response = await client.GetAsync(settings.ApiUrl + "tickers.do");
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if (response.IsSuccessStatusCode)
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{
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var data = await response.Content.ReadAsJsonAsync<OKExResponse>();
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return data.Tickers.Where(s => settings.AllowedCurrencies.Contains(s.NoneBaseCurrency.ToUpper())).
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Select(it => new Ticker() { TickerDisplayName = $"{it.BaseCurrency.ToUpper()}/{it.NoneBaseCurrency.ToUpper()}", Currency1 = Replace(it.BaseCurrency.ToUpper()), Currency2 = Replace(it.NoneBaseCurrency.ToUpper()), Currency = Replace(it.BaseCurrency.ToUpper()), TickerSymbol = $"{it.BaseCurrency.ToUpper()}{it.NoneBaseCurrency.ToUpper()}" });
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}
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throw new NotSupportedException("OKEx error");
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}
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public async Task<TickerData> GetTickerData(TickerInfo ticker, DateTime start, DateTime end)
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{
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HttpClient client = new HttpClient();
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var response = await client.GetAsync($"{settings.ApiUrl}ticker.do?symbol={ticker.Currency1.ToLower()}_{ticker.Currency2.ToLower()}");
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if (response.IsSuccessStatusCode)
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{
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var data = await response.Content.ReadAsJsonAsync<TickerType>();
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return new TickerData()
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{
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TickerTime = ConvertFromLong(data.Timestamp),
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TickerId = ticker.TickerId,
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Open = data.Ticker.Low,
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High = data.Ticker.High,
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Low = data.Ticker.Low,
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Close = data.Ticker.Last,
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Volume = data.Ticker.Volume
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};
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}
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throw new NotSupportedException("OKEx error");
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}
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#region Helpers
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private long ConvertToLong(DateTime time)
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{
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return (long)(time - Constants._1970Time).TotalMilliseconds;
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}
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private DateTime ConvertFromLong(long ms)
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{
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return Constants._1970Time.AddMilliseconds(ms);
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}
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private string Replace(string asset)
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{
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if (settings.ReplaceSymbols != null && settings.ReplaceSymbols.ContainsKey(asset))
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{
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return settings.ReplaceSymbols[asset];
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}
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return asset;
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}
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#endregion
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}
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}
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