private static void Main(string[] args)
{
var activeAccounts = InstantiateAccounts();
// Stopwatch is necessary to terminate code if new loans are not found after a set time period.
var stopwatch = new Stopwatch();
stopwatch.Start();
var msUntilTermination = 30000;
// Multiple accounts can access the API so we might as well run them in parallel instead of waiting for one account after the other.
Parallel.ForEach(activeAccounts, investableAccount =>
{
// We only need to search for loans if the available balance >= minimum investment amount.
if (investableAccount.availableCash < investableAccount.amountToInvestPerLoan)
{
Console.WriteLine("{0} does not have enough cash available to invest", investableAccount.accountTitle);
Console.WriteLine("Amount of cash currently available: ${0}", investableAccount.availableCash);
return;
}
Console.WriteLine("Searching for loans for the following account: {0}", investableAccount.accountTitle);
Console.WriteLine("Amount of cash currently available: ${0}", investableAccount.availableCash);
while (stopwatch.ElapsedMilliseconds < msUntilTermination && investableAccount.availableCash >= investableAccount.amountToInvestPerLoan)
{
// If this is the first time retrieving latest listed loans, retrieve all.
// Retrieve only new loans for subsequent loops.
if (investableAccount.getAllLoans)
{
latestLoansUrl = "https://api.lendingclub.com/api/investor/v1/loans/listing?showAll=true";
investableAccount.getAllLoans = false;
}
else
{
latestLoansUrl = "https://api.lendingclub.com/api/investor/v1/loans/listing?showAll=false";
}
NewLoans latestListedLoans = GetNewLoansFromJson(RetrieveJsonString(latestLoansUrl, investableAccount.authorizationToken));
// If there are no newly listed loans then we do not need to continue and filter them.
if (latestListedLoans.loans == null)
{
continue;
}
// We need to filter the new loans to see which ones pass the account's screening criteria.
var filteredLoans = FilterNewLoans(latestListedLoans.loans, investableAccount);
// There's no need to move on to building an order if there were no loans that passed the screening filter.
if (!filteredLoans.Any())
{
// Lending Club limited the API to one request per second so we need a delay before trying again to find new loans.
Thread.Sleep(1000);
continue;
}
Order order = BuildOrder(filteredLoans, investableAccount.amountToInvestPerLoan, investableAccount.investorID);
string output = JsonConvert.SerializeObject(order);
var orderResponse = JsonConvert.DeserializeObject <CompleteOrderConfirmation>(SubmitOrder(investableAccount.submitOrderUrl, output, investableAccount.authorizationToken));
var orderConfirmations = orderResponse.orderConfirmations.AsEnumerable();
// Collecting the loan IDs of purchased loans so we can prevent them from being invested in again on the next iteration of the loop.
var loansPurchased = (from confirmation in orderConfirmations
where confirmation.investedAmount >= 0
select confirmation.loanId);
// We want to notify the user of any loans were successfully purchased.
if (loansPurchased.Any())
{
foreach (var loan in loansPurchased)
{
Console.WriteLine("The account {0} purchased loan ID: {1} at {2}", investableAccount.accountTitle, loan, DateTime.Now.ToLongTimeString());
}
}
// Updating the account to avoid purchasing loans that have already been purchased.
investableAccount.loanIDsOwned.AddRange(loansPurchased);
// Update the amount of available cash. Loop will then terminate if the available cash is less than the amount needed to invest in a loan.
investableAccount.availableCash -= loansPurchased.Count() * investableAccount.amountToInvestPerLoan;
}
});
}
// Need to parse the API response to figure out which loans are newly listed.
public static NewLoans GetNewLoansFromJson(string inputJson)
{
NewLoans newLoans = JsonConvert.DeserializeObject <NewLoans>(inputJson);
return(newLoans);
}
