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51 lines
2.1 KiB
C#
51 lines
2.1 KiB
C#
namespace QuanTAlib;
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using System;
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using System.Text.Json;
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/* <summary>
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Yahoo Finance - Free API feed to collect daily market quotes
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Parameters:
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Symbol: stock symbol (default: "IBM")
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Period: number of days of collected history (default: 252)
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Usage:
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Yahoo_Feed ticker = new("MSFT", 20)
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</summary>
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*/
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public class Yahoo_Feed : TBars
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{
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public Yahoo_Feed(string Symbol = "IBM", int Period = 252)
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{
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Period = (int)(Period * 1.45);
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string requestUrl = "https://query1.finance.yahoo.com/v8/finance/chart/" +
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Symbol + "?interval=1d&period1=" +
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(int)new DateTimeOffset(DateTime.UtcNow.AddDays(-Period + 1)).ToUnixTimeSeconds() + "&period2=" +
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(int)new DateTimeOffset(DateTime.UtcNow).ToUnixTimeSeconds();
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System.Net.Http.HttpClient client = new();
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var msg = client.GetStringAsync(requestUrl).Result;
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var jresult = JsonSerializer.Deserialize<JsonDocument>(msg).RootElement;
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jresult.TryGetProperty("chart", out JsonElement json);
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json.TryGetProperty("result", out json);
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json[0].TryGetProperty("timestamp", out JsonElement datetime);
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json[0].TryGetProperty("indicators", out json);
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json.TryGetProperty("quote", out json);
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json[0].TryGetProperty("open", out JsonElement open);
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json[0].TryGetProperty("high", out JsonElement high);
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json[0].TryGetProperty("low", out JsonElement low);
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json[0].TryGetProperty("close", out JsonElement close);
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json[0].TryGetProperty("volume", out JsonElement volume);
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for (int i = 0; i < datetime.GetArrayLength(); i++)
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{
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DateTime d = DateTimeOffset.FromUnixTimeSeconds(long.Parse(datetime[i].GetRawText())).DateTime;
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double o = Math.Round(double.Parse(open[i].GetRawText()), 3);
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double h = Math.Round(double.Parse(high[i].GetRawText()), 3);
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double l = Math.Round(double.Parse(low[i].GetRawText()), 3);
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double c = Math.Round(double.Parse(close[i].GetRawText()), 3);
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double v = Math.Round(double.Parse(volume[i].GetRawText()), 3);
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base.Add(d, o, h, l, c, v);
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}
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}
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}
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