public List <History> GetAllStatistics(int page = 0)
{
using (ConvertersHistoryDataContext context = new ConvertersHistoryDataContext())
{
List <History> history = context.History.Skip(page * 20).Take(20).ToList();
return(history);
}
}
public double GetStatisticAmount()
{
using (ConvertersHistoryDataContext context = new ConvertersHistoryDataContext())
{
List <History> history = context.History.ToList();
return(history.Count);
}
}
public List <History> GetHistoryStatistic(int year, int month, int day)
{
using (ConvertersHistoryDataContext context = new ConvertersHistoryDataContext())
{
DateTime timeFrom = new DateTime(2021, 4, 21);
DateTime timeTo = new DateTime(2021, 5, 21);
List <History> history = context.History.Where(x => x.UsageDate >= timeFrom && x.UsageDate >= timeTo).ToList();
return(history);
}
}
public void AddHistoryToDb(string ConverterName, string valueBefore, string valueAfter, string unitFrom = null, string unitTo = null)
{
using (ConvertersHistoryDataContext context = new ConvertersHistoryDataContext())
{
History history = new History();
history.ConverterName = ConverterName;
DateTime date = DateTime.Now;
history.UsageDate = date;
history.valueBefore = valueBefore;
history.valueAfter = valueAfter;
history.unitFrom = unitFrom;
history.unitTo = unitTo;
context.History.Add(history);
context.SaveChanges();
}
}
public List <History> getThreeMostPopularConversions()
{
using (ConvertersHistoryDataContext context = new ConvertersHistoryDataContext())
{
List <History> history = context.History
.GroupBy(grp => grp.ConverterName)
.OrderByDescending(item => item.Count())
.Take(3)
.Select(s => new History
{
ConverterName = s.Key,
id = s.Count()
})
.ToList();
return(history);
}
}
