public async Task <List <FamilyMember> > ListFamilyMembers(int accountId)
{
var fetchAccountDetails = _accountsApi.MakeRequestAsync(new AccountApiRequest {
AccountId = accountId
});
var fetchAccountCustomers = _customersApi.MakeRequestAsync(new CustomerApiRequest {
AccountId = accountId
});
var fetchAccountTransactions = _transactionsApi.MakeRequestAsync(new TransactionApiRequest {
AccountId = accountId
});
var fetchCreditLimits = _familyTaskDb.GetAllFamilyMembersCredit(accountId);
var fetchAllTasks = _familyTaskDb.GetAllTasks(accountId);
var fetchAccountPayments = _paymentsApi.MakeRequestAsync(new PaymentApiRequest {
AccountId = accountId
});
var accountCustomers = (await fetchAccountCustomers).First().Customers;
var fetchBalances = Task.WhenAll(accountCustomers.Select(customer => _accountDb.GetBalance(accountId, customer.CustomerId)));
var accountDetails = await fetchAccountDetails;
var accountTransactions = (await fetchAccountTransactions).First().CustomerTransactions;
var balances = await fetchBalances;
var creditLimits = await fetchCreditLimits;
var completedTasks = (await fetchAllTasks).Where(task => task.ApprovedBy != null && task.CompletedBy != null).ToList();
var accountPayments = await fetchAccountPayments;
var account = accountDetails.Single();
var actualAccountPayments = accountPayments.Single().Payment.Select(payment => new CreditEngine.Payment(payment.ToDateTimeOffset(), payment.ToDateTimeOffset(), (double)payment.TotalMonthlyBalance, (double)payment.TotalBalanceRemaining, (double)payment.TotalBalancePaid)).ToList();
var now = DateTimeOffset.UtcNow;
var familyMembers =
from customer in accountCustomers
join customerTransactions in accountTransactions
on customer.CustomerId equals customerTransactions.CustomerId
join customerBalance in balances
on customer.CustomerId equals customerBalance.CustomerId
join creditLimit in creditLimits
on customer.CustomerId equals creditLimit.CustomerId
into customerCreditLimits
join complatedTask in completedTasks
on customer.CustomerId equals complatedTask.CompletedBy.Value
into customerCompletedTasks
let creditLimit = customerCreditLimits.FirstOrDefault()
let transactions = customerTransactions.Transactions
.OrderByDescending(t => t.ToDateTimeOffset())
.Take(5)
.Select(t => new RecentTransaction
{
Merchant = t.MerchantName,
Value = t.Amount,
When = t.ToDateTimeOffset().Date.ToShortDateString()
})
.ToList()
let isAdmin = account.PrimaryCustomerId == customer.CustomerId
let creditLimitChange = new CreditLimitChange(
(double)customerBalance.Balance,
(double)(creditLimit?.Previous ?? 0M),
(double)(creditLimit?.Current ?? account.CreditLimit),
creditLimit?.WhenChanged ?? now)
let consumptionScore = new ConsumptionScore(
creditLimitChange,
(double)customerBalance.Balance)
let largePurchaseSchore = new LargePurchaseScore(
customerTransactions.Transactions
.Select(t => new CreditEngine.Transaction(t.ToDateTimeOffset(), (double)t.Amount))
.ToList(),
(double)(creditLimit?.Current ?? account.CreditLimit))
let lifespanScore = new LifespanScore(
customerTransactions.Transactions
.OrderBy(t => t.ToDateTimeOffset())
.First()
.ToDateTimeOffset())
let tasksByMonth = customerCompletedTasks
.Where(t => t.WhenCompleted.Value.AddDays(30) > now)
.ToLookup(t => t.WhenCompleted.Value.ToNextMonth())
let virtualBills = customerTransactions.Transactions
.Where(t => t.ToDateTimeOffset().AddDays(30) > now)
.GroupBy(t => t.ToDateTimeOffset().ToNextMonth())
.Select(month =>
{
var monthlyTransactions = month.ToList();
var monthlyCompletedTasks = tasksByMonth[month.Key]?.ToList() ?? new List <FamilyTask>();
var transactionsTotal = monthlyTransactions.Sum(x => x.Amount);
var completedTotal = monthlyCompletedTasks.Sum(x => x.Value);
return(new CreditEngine.Payment(month.Key, month.Key, (double)transactionsTotal, (double)(transactionsTotal - completedTotal), (double)completedTotal));
})
.ToList()
let paymentScore = new PaymentScore(isAdmin ? actualAccountPayments : virtualBills) // TODO
let utilitzationScore = new UtilizationScore(
(double)(creditLimit?.Current ?? account.CreditLimit),
(double)customerBalance.Balance)
let score = new CreditScore(consumptionScore, largePurchaseSchore, lifespanScore, paymentScore, utilitzationScore)
select new FamilyMember
{
CustomerId = customer.CustomerId,
IsPrimary = isAdmin,
Name = $"{customer.FirstName} {customer.LastName}",
RecentTransactions = transactions,
VirtualBalance = customerBalance.Balance,
VirtualCreditLimit = creditLimit?.Current ?? account.CreditLimit,
MaxCreditLimit = creditLimit?.Max,
MinCreditLimit = creditLimit?.Min,
VirtualCreditScore = (int)score.Score,
};
return(familyMembers.ToList());
}
