private static IEnumerable <IGrouping <string, Transaction> > GroupByPeriods(ReportGranularity granularity, IEnumerable <Transaction> transactions)
{
switch (granularity)
{
case ReportGranularity.Day:
return(transactions.GroupBy(t => t.Timestamp.ToString("yyyy-MM-dd")));
case ReportGranularity.Week:
return(transactions.GroupBy(t => $"{GetDate(t.Timestamp, 1)} do {GetDate(t.Timestamp, 7)}"));
case ReportGranularity.Month:
return(transactions.GroupBy(t => t.Timestamp.ToString("yyyy-MM")));
case ReportGranularity.Year:
return(transactions.GroupBy(t => t.Timestamp.ToString("yyyy")));
case ReportGranularity.All:
return(transactions.GroupBy(t => "All time"));
default:
throw new InvalidOperationException("Unknown granularity");
}
}
public static string SerializerUserActivityReport(string userId, DateTime?from, DateTime?to, ReportGranularity granularity, AggregatedUserActivityReportEvent portions)
{
var sb = new StringBuilder();
sb.AppendLine($"Raport aktywności użytkownika; {userId}");
sb.AppendLine($"Zakres od; {from?.ToString() ?? "-"}");
sb.AppendLine($"Zakres do; {to?.ToString() ?? "-"}");
sb.AppendLine($"Granularność; {granularity}");
sb.WriteAccountsData(portions.AccountsPortions.ToArray());
sb.WriteCardsData(portions.CardsPortions.ToArray());
sb.WritePaymentsData(portions.PaymentsPortions.ToArray());
sb.WriteLoansData(portions.LoansPortions.ToArray());
return(sb.ToString());
}
public static string SerializerOverallReport(ReportSubject subject, DateTime?from, DateTime?to, ReportGranularity granularity, OverallReportPortion[] portions)
{
var sb = new StringBuilder();
sb.AppendLine($"Raport całościowy dla; {subject}");
sb.AppendLine($"Zakres od; {from?.ToString() ?? "-"}");
sb.AppendLine($"Zakres do; {to?.ToString() ?? "-"}");
sb.AppendLine($"Granularność; {granularity}");
var groupedPortions = portions.GroupBy(p => p.Period);
var ordered = groupedPortions.OrderBy(p => p.Key);
foreach (var portion in ordered)
{
sb.AppendLine(portion.Key);
foreach (var aggregation in portion)
{
sb.WriteAggragation(portion.Key, aggregation.Value, aggregation.Aggregation);
}
}
return(sb.ToString());
}
private static IEnumerable <UserReportPortion> AggregateUserCardTransactions(Card card, IEnumerable <Transaction> allTransactions, ReportGranularity granularity)
{
var transactions = allTransactions.Where(t => t.CardId == card.Id);
var portions = GroupByPeriods(granularity, transactions);
foreach (var portion in portions)
{
var debits = portion.Sum(p => (float?)p.Amount) ?? 0;
yield return(new UserReportPortion {
Period = portion.Key, Debits = debits, Element = card.Number
});
}
}
private static IEnumerable <UserReportPortion> AggregateUserPaymentsTransactions(Payment payment, IEnumerable <Transaction> allTransactions, ReportGranularity granularity)
{
var transactions = allTransactions.Where(p => p.PaymentId == payment.Id);
var portions = GroupByPeriods(granularity, transactions);
foreach (var portion in portions)
{
var debits = portion.Sum(p => (float?)p.Amount) ?? 0;
yield return(new UserReportPortion {
Period = portion.Key, Debits = debits, Element = payment.Name
});
}
}
private static IEnumerable <UserReportPortion> AggregateUserAccountsTransactions(Account account, IEnumerable <Transaction> allTransactions, ReportGranularity granularity)
{
var transactions = allTransactions.Where(t => t.Sender == account.Id || t.Recipient == account.Id);
var portions = GroupByPeriods(granularity, transactions);
foreach (var portion in portions)
{
var incomes = portion.Where(p => p.Recipient == account.Id).Sum(p => (float?)p.Amount) ?? 0;
var debits = portion.Where(p => p.Sender == account.Id).Sum(p => (float?)p.Amount) ?? 0;
yield return(new UserReportPortion {
Period = portion.Key, Debits = debits, Incomes = incomes, Element = account.Number
});
}
}
