c

YD_AllHeartRates.Api/Services/Impl/HeartRateReportHelper.cs

@@ -14,38 +14,35 @@ namespace YD_AllHeartRates.Api.Services.Impl
 
         public static ChartDataDto BuildHeartRateTrend(List<HeartRateData> data)
         {
-            // 固定时间段：8点到16点
+            var chart = new ChartDataDto
-            var fixedHours = Enumerable.Range(8, 9).ToList(); // 8~16 共9小时
+            {
-            var axisX = fixedHours.Select(h => $"{h}:00").ToList();
+                AxisX = new List<string>(),
-
+                AxisY = new List<int>()
-            var axisY = new List<int>();
+            };
 
             if (data == null || data.Count == 0)
-            {
+                return chart;
-                // 无数据时返回默认0值
-                axisY = Enumerable.Repeat(0, fixedHours.Count).ToList();
-            }
-            else
-            {
-                // 按小时分组计算平均值（四舍五入）
-                var hourlyAvg = data
-                    .GroupBy(x => x.ScoreTime.Hour)
-                    .ToDictionary(g => g.Key, g => (int)Math.Round(g.Average(x => x.Value)));
 
-                foreach (var hour in fixedHours)
+            // 按小时分组计算平均值（四舍五入）
-                {
+            var hourlyAvg = data
-                    axisY.Add(hourlyAvg.TryGetValue(hour, out int val) ? val : 0); 
+                .GroupBy(x => x.ScoreTime.Hour)
-                }
+                .ToDictionary(g => g.Key, g => (int)Math.Round(g.Average(x => x.Value)));
+
+            // 计算最小和最大小时
+            int minHour = data.Min(x => x.ScoreTime.Hour);
+            int maxHour = data.Max(x => x.ScoreTime.Hour);
+
+            for (int hour = minHour; hour <= maxHour; hour++)
+            {
+                chart.AxisX.Add($"{hour}:00"); 
+                chart.AxisY.Add(hourlyAvg.TryGetValue(hour, out int val) ? val : 0); 
             }
 
-            return new ChartDataDto
+            return chart;
-            {
-                AxisX = axisX,
-                AxisY = axisY
-            };
         }
 
 
+
         public static int CalculateReachRate(int reachCount, int total)
             => total == 0 ? 0 : (int)((double)reachCount / total * 100);