65 lines
2.1 KiB
C#
65 lines
2.1 KiB
C#
using YD_AllHeartRates.Api.Entitys;
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using YD_AllHeartRates.Commons.Dto;
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using YD_AllHeartRates.Commons.Utils;
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namespace YD_AllHeartRates.Api.Services.Impl
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{
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public static class HeartRateReportHelper
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{
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public static (DateTime Start, DateTime End, DateTime Effective) GetTimeRange(DateTime? input)
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{
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var effective = input ?? DateTime.Now;
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return (effective.Date, effective.Date.AddDays(1).AddSeconds(-1), effective);
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}
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public static ChartDataDto BuildHeartRateTrend(List<HeartRateData> data)
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{
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var chart = new ChartDataDto
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{
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AxisX = new List<string>(),
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AxisY = new List<int>()
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};
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if (data == null || data.Count == 0)
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return chart;
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// 按小时分组计算平均值（四舍五入）
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var hourlyAvg = data
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.GroupBy(x => x.ScoreTime.Hour)
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.ToDictionary(g => g.Key, g => (int)Math.Round(g.Average(x => x.Value)));
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// 计算最小和最大小时
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int minHour = data.Min(x => x.ScoreTime.Hour);
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int maxHour = data.Max(x => x.ScoreTime.Hour);
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for (int hour = minHour; hour <= maxHour; hour++)
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{
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chart.AxisX.Add($"{hour}:00");
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chart.AxisY.Add(hourlyAvg.TryGetValue(hour, out int val) ? val : 0);
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}
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return chart;
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}
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public static int CalculateReachRate(int reachCount, int total)
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=> total == 0 ? 0 : (int)((double)reachCount / total * 100);
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public static int CalculateAverage(List<DateTime> timestamps)
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=> timestamps.CalculateDuration();
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public static Dictionary<T, int> CalculateDurations<T>(List<HeartRateData> data, Func<HeartRateData, T> keySelector)
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where T : notnull
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{
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return data
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.Where(x => x.Strength >= 50)
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.GroupBy(keySelector)
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.ToDictionary(
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g => g.Key,
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g => g.Select(x => x.ScoreTime).ToList().CalculateDuration()
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);
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}
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}
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}
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