using AssetManager.Data;
using AssetManager.Models.DTOs;
using Microsoft.Extensions.Logging;

namespace AssetManager.Infrastructure.StrategyEngine.Calculators;

/// <summary>
/// 均线趋势策略计算器
/// </summary>
public class MaTrendCalculator : IStrategyCalculator
{
    private readonly ILogger<MaTrendCalculator> _logger;

    public string StrategyType => AssetManager.Models.DTOs.StrategyType.MaTrend;

    public MaTrendCalculator(ILogger<MaTrendCalculator> logger)
    {
        _logger = logger;
    }

    public async Task<StrategySignal> CalculateAsync(
        string configJson,
        List<Position> positions,
        CancellationToken cancellationToken = default)
    {
        _logger.LogInformation("计算均线趋势策略信号");

        var config = System.Text.Json.JsonSerializer.Deserialize<MaTrendConfig>(configJson, new System.Text.Json.JsonSerializerOptions
        {
            PropertyNameCaseInsensitive = true
        }) ?? new MaTrendConfig();

        if (positions.Count == 0)
        {
            return new StrategySignal
            {
                StrategyType = StrategyType,
                Signal = "HOLD",
                Reason = "无持仓",
                GeneratedAt = DateTime.UtcNow
            };
        }

        // 简单实现：返回持有信号
        await Task.Delay(1, cancellationToken);

        return new StrategySignal
        {
            StrategyType = StrategyType,
            Signal = "HOLD",
            Reason = "均线趋势策略暂未实现",
            GeneratedAt = DateTime.UtcNow
        };
    }
}