private static IEnumerable <CountryInfo> AggregateWithoutZeroDays(IEnumerable <CountryInfo> arr)
{
CountryInfo prev = null;
foreach (var item in arr.Where(_ => _.Days > 0))
{
if (prev == null)
{
prev = item;
continue;
}
if (item.Country == prev.Country)
{
prev = new CountryInfo
{
Country = item.Country,
CountryIsoCode = item.CountryIsoCode,
FirstDateUtc = prev.FirstDateUtc,
LastDateUtc = item.LastDateUtc,
MaxAccuracy = Math.Max(Math.Max(0, item.MaxAccuracy), Math.Max(0, prev.MaxAccuracy)),
MinAccuracy = Math.Min(Math.Max(0, item.MinAccuracy), Math.Max(0, prev.MinAccuracy)),
};
}
else
{
yield return(prev);
prev = item;
}
}
if (prev != null)
{
yield return(prev);
}
}
private static string FormatCsv(CountryInfo countryInfo, int num)
{
return($"{num},{countryInfo.CountryIsoCode ?? ""},{countryInfo.Country ?? ""},{Math.Ceiling(countryInfo.Days)},{countryInfo.FirstDateUtc:O},{countryInfo.LastDateUtc:O},{countryInfo.MinAccuracy},{countryInfo.MaxAccuracy}");
}
