/// <inheritdoc />
public async Task <PagedList <UserTransactionDto> > GetTransactions(int userId, PagedFilterDefinition <TransactionFilter> filter)
{
var allTransactions = await _transactionsRepository.GetAllUserTransactions(userId);
var transactions = allTransactions.Select(t => new UserTransactionDto
{
Date = t.Date,
Price = t.Price,
Quantity = t.Quantity < 0 ? -t.Quantity : t.Quantity,
Action = t.Quantity < 0 ? Action.Sell : Action.Buy,
Id = t.Id,
CompanyName = t.Company.Code,
Total = t.Quantity < 0 ? -t.Quantity * t.Price : t.Quantity * t.Price,
Profit = 0
}).ToList();
foreach (var pagedTransaction in transactions)
{
if (pagedTransaction.Action == Action.Buy)
{
continue;
}
var pastTransactions = transactions
.Where(item => item.CompanyName == pagedTransaction.CompanyName && item.Date < pagedTransaction.Date)
.OrderBy(item => item.Date)
.ToList();
var quantity = 0m;
var price = 0m;
foreach (var pastTransaction in pastTransactions)
{
if (pastTransaction.Action == Action.Buy)
{
price = (price * quantity + pastTransaction.Price * pastTransaction.Quantity) /
(quantity + pastTransaction.Quantity);
quantity += pastTransaction.Quantity;
}
else
{
quantity -= pastTransaction.Quantity;
}
}
pagedTransaction.Profit = pagedTransaction.Quantity * (pagedTransaction.Price - price);
}
if (!string.IsNullOrWhiteSpace(filter.Search))
{
transactions = transactions.Where(item => item.CompanyName.Contains(filter.Search.ToUpper())).ToList();
}
transactions = transactions.OrderBy(filter.OrderBys).ToList();
return(transactions.ToPagedList(filter.Start, filter.Length));
}
/// <inheritdoc />
public async Task <IList <UserTransaction> > GetAllUserTransactions(int userId)
{
return(await _baseRepository.GetAllUserTransactions(userId));
}
