public IEnumerable <T> GetRegionStats <T>(Func <TStat, T> selector,
Func <TStat, string> regionSelector, string region)
{
return(RegionStats.Select(x => x.Value).Select(stats =>
stats.FirstOrDefault(x => regionSelector(x) == region)).Select(
stat => stat != null ? selector(stat) : default(T)).ToList());
}
protected DailyStatList(IEnumerable <TStat> stats, string regionName)
: this()
{
IEnumerable <DateTime> dates = stats.Select(x => x.StatDate).Distinct();
foreach (DateTime date in dates)
{
IEnumerable <TStat> oneDayStats = stats.Where(x => x.StatDate == date);
TStat currentCityStat = oneDayStats.GetMergeStat(regionName);
SummaryStats.Add(date, currentCityStat);
RegionStats.Add(date, oneDayStats);
IEnumerable <string> existedRegions = oneDayStats.Select(x => x.Region).Distinct();
foreach (string region in existedRegions)
{
if (Regions.FirstOrDefault(x => x == region) == null)
{
Regions.Add(region);
}
}
}
}
public async Task SeedRegionStats()
{
foreach (var reg in _context.Region.Include(rs => rs.Stats).ToList())
{
var countryCount = await GetTotlCountryNumberForRegionName(reg.Name);
if (reg.Stats == null)
{
var newStats = new RegionStats()
{
CountryCount = countryCount, RegionId = reg.Id
};
reg.Stats = newStats;
await _context.SaveChangesAsync();
}
else if (reg.Stats.CountryCount != countryCount)
{
reg.Stats.CountryCount = countryCount;
await _context.SaveChangesAsync();
}
}
}
