127 lines
4.4 KiB
C#
127 lines
4.4 KiB
C#
using NodaTime;
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using YahooQuotesApi;
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using AssetManager.Data;
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using AssetManager.Models.DTOs;
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using Microsoft.Extensions.Logging;
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using System.Collections.Immutable;
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namespace AssetManager.Infrastructure.Services;
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/// <summary>
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/// Yahoo财经市场数据服务接口
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/// </summary>
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public interface IYahooMarketService
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{
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/// <summary>
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/// 获取股票实时价格
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/// </summary>
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Task<MarketPriceResponse> GetStockPriceAsync(string symbol);
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/// <summary>
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/// 获取股票历史K线数据
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/// </summary>
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Task<List<MarketDataResponse>> GetStockHistoricalDataAsync(string symbol, string timeframe, int limit);
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}
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/// <summary>
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/// Yahoo财经市场数据服务实现
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/// </summary>
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public class YahooMarketService : IYahooMarketService
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{
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private readonly ILogger<YahooMarketService> _logger;
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private readonly YahooQuotes _yahooQuotes;
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public YahooMarketService(ILogger<YahooMarketService> logger)
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{
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_logger = logger;
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// 默认获取最近60天的历史数据
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_yahooQuotes = new YahooQuotesBuilder()
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.WithHistoryStartDate(Instant.FromDateTimeUtc(DateTime.UtcNow.AddDays(-60)))
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.Build();
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}
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/// <summary>
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/// 转换股票代码为 Yahoo Finance 格式
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/// <para>BRK.B → BRK-B（伯克希尔B类股）</para>
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/// <para>BRK.A → BRK-A（伯克希尔A类股）</para>
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/// </summary>
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private string ConvertToYahooSymbol(string symbol)
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{
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if (string.IsNullOrEmpty(symbol))
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return symbol;
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// Yahoo Finance 用连字符表示类别股，而非点号
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// BRK.B → BRK-B, BRK.A → BRK-A
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return symbol.ToUpper().Replace(".", "-");
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}
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public async Task<MarketPriceResponse> GetStockPriceAsync(string symbol)
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{
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var yahooSymbol = ConvertToYahooSymbol(symbol);
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_logger.LogInformation("Yahoo获取股票价格: {Symbol} -> {YahooSymbol}", symbol, yahooSymbol);
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Snapshot? snapshot = await _yahooQuotes.GetSnapshotAsync(yahooSymbol);
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if (snapshot is null)
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throw new InvalidOperationException($"Yahoo未知标的: {symbol}");
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decimal price = snapshot.RegularMarketPrice;
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if (price <= 0)
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throw new InvalidOperationException($"Yahoo获取价格失败，标的: {symbol}");
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decimal previousClose = snapshot.RegularMarketPreviousClose;
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if (previousClose <= 0)
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previousClose = price;
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_logger.LogDebug("Yahoo接口返回 {Symbol}：最新价 {CurrentPrice}，昨收价 {PrevClose}",
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symbol, price, previousClose);
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return new MarketPriceResponse
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{
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Symbol = symbol, // 返回原始代码
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Price = price,
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PreviousClose = previousClose,
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Timestamp = DateTime.UtcNow,
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AssetType = "Stock"
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};
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}
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public async Task<List<MarketDataResponse>> GetStockHistoricalDataAsync(string symbol, string timeframe, int limit)
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{
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var yahooSymbol = ConvertToYahooSymbol(symbol);
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_logger.LogInformation("Yahoo获取历史数据: {Symbol} -> {YahooSymbol}, {Timeframe}, {Limit}", symbol, yahooSymbol, timeframe, limit);
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Result<History> result = await _yahooQuotes.GetHistoryAsync(yahooSymbol);
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if (result.Value == null)
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throw new InvalidOperationException($"Yahoo获取历史数据失败，标的: {symbol}");
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History history = result.Value;
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var ticks = history.Ticks;
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var marketDataList = new List<MarketDataResponse>();
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foreach (var tick in ticks)
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{
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marketDataList.Add(new MarketDataResponse
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{
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Symbol = symbol, // 返回原始代码
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Timestamp = tick.Date.ToDateTimeUtc(),
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Open = (decimal)tick.Open,
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High = (decimal)tick.High,
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Low = (decimal)tick.Low,
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Close = (decimal)tick.Close,
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Volume = (decimal)tick.Volume,
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AssetType = "Stock"
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});
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}
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// 按时间戳排序并取最近的limit条
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var sortedData = marketDataList
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.OrderBy(x => x.Timestamp)
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.TakeLast(limit)
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.ToList();
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_logger.LogInformation("Yahoo获取 {Symbol} 历史数据 {Count} 条", symbol, sortedData.Count);
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return sortedData;
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}
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} |