private static DailyUsage GetDailyUsageImproved(DateTime yesterday)
{
yesterday = yesterday.Date;
var today = yesterday.AddDays(1);
var todayRecords = GetP1RecordsForDay(today);
var yesterdayRecords = GetP1RecordsForDay(yesterday);
var dayBeforeYesterdayRecords = GetP1RecordsForDay(yesterday.AddDays(-1));
var yesterdayLocal = yesterday.AddHours(12).ToLocalTime().Date;
var todayLocal = yesterdayLocal.AddDays(1);
var records = dayBeforeYesterdayRecords.Concat(yesterdayRecords).Concat(todayRecords);
var improved = P1Improved.FromP1Records(records).ToArray();
var firstRecord = improved.First(p1I => p1I.DateTime >= yesterdayLocal);
var lastRecord = improved.First(p1I => p1I.DateTime >= todayLocal);
var usageTotal = Usage.FromRecords(firstRecord, lastRecord);
var range = Enumerable.Range(0, 25).ToArray();
var hours = range.Select(i => yesterdayLocal.AddHours(i)).ToArray();
var hourRecords = hours.Select(h => improved.First(p1I => p1I.DateTime >= h)).ToArray();
var hourly = range.Skip(1).Select(r => new Usage
{
kWh = hourRecords[r].kWhTotal - hourRecords[r - 1].kWhTotal,
M3 = hourRecords[r].M3Total - hourRecords[r - 1].M3Total,
}).ToArray();
var dailyUsage = new DailyUsage {
Total = usageTotal, Day = yesterday, Hourly = hourly
};
return(dailyUsage);
}
