namespace AssetManager.Infrastructure.Services;

/// <summary>
/// 汇率服务接口（预留，后续实现多币种汇总）
/// </summary>
public interface IExchangeRateService
{
    /// <summary>
    /// 获取汇率（从源币种转换为目标币种）
    /// </summary>
    /// <param name="fromCurrency">源币种（如 CNY）</param>
    /// <param name="toCurrency">目标币种（如 USD）</param>
    /// <returns>汇率（1 单位源币种可兑换的目标币种数量）</returns>
    Task<decimal> GetExchangeRateAsync(string fromCurrency, string toCurrency);

    /// <summary>
    /// 转换金额
    /// </summary>
    /// <param name="amount">金额</param>
    /// <param name="fromCurrency">源币种</param>
    /// <param name="toCurrency">目标币种</param>
    /// <returns>转换后的金额</returns>
    Task<decimal> ConvertAmountAsync(decimal amount, string fromCurrency, string toCurrency);
}