using System;
using System.Collections.Generic;

using MuchInfo.Chart.Data.EnumTypes;
using MuchInfo.Chart.Data.Interfaces;

namespace MuchInfo.Chart.DataAccess
{
    /// <summary>
    /// 请求历史周期数据点（1分钟线，5分钟线，30分钟线，240分钟线，日线...） 
    /// </summary>
    public interface IDataAccess
    {
        #region Methods

        /// <summary>
        /// 获取数据
        /// </summary>
        /// <param name="symbol">商品代码</param>
        /// <param name="cycleType">周期类型</param>
        /// <param name="startTime">起始时间</param>
        /// <param name="endTime">结束时间</param>
        /// <param name="totalCount">记录条数</param>
        IEnumerable<IBarDataPoint> GetDataPoints(string symbol, CycleType cycleType, DateTime startTime, DateTime endTime, int totalCount);

        /// <summary>
        /// 获取数据
        /// </summary>
        /// <param name="symbol">商品代码</param>
        /// <param name="timeSpan">The time span.</param>
        /// <param name="startTime">起始时间</param>
        /// <param name="endTime">结束时间</param>
        /// <param name="totalCount">记录条数</param>
        /// <returns>IEnumerable{IBarDataPoint}.</returns>
        IEnumerable<IBarDataPoint> GetDataPoints(string symbol, TimeSpan timeSpan, DateTime startTime, DateTime endTime, int totalCount);

        /// <summary>
        /// 保存数据
        /// </summary>
        /// <param name="symbol">商品代码</param>
        /// <param name="cycleType">周期类型</param>
        /// <param name="dataPoints">保存的数据</param>
        void SaveDataPoints(string symbol, CycleType cycleType, IList<IBarDataPoint> dataPoints);

        /// <summary>
        /// 保存数据
        /// </summary>
        /// <param name="symbol">商品代码</param>
        /// <param name="timeSpan">The time span.</param>
        /// <param name="dataPoints">保存的数据</param>
        void SaveDataPoints(string symbol, TimeSpan timeSpan, IList<IBarDataPoint> dataPoints);

        #endregion Methods
    }
}