public JObject addLoan(JObject request)
{
//Get arguments
request.TryGetValue("productId", out JToken requestProductId);
request.TryGetValue("start", out JToken requestStart);
request.TryGetValue("end", out JToken requestEnd);
// Verify the arguments
List <string> failedVerifications = new List <string>();
if (requestProductId == null || requestProductId.Type != JTokenType.String)
{
failedVerifications.Add("productID");
}
if (requestStart == null || !(requestStart.Type == JTokenType.String || requestStart.Type == JTokenType.Date))
{
failedVerifications.Add("start");
}
if (requestEnd == null || !(requestEnd.Type == JTokenType.String || requestEnd.Type == JTokenType.Date))
{
failedVerifications.Add("end");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Parse arguments
DateTime start;
DateTime end;
string productId = requestProductId.ToString();
try { start = DateTime.Parse(requestStart.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'start'")); }
try { end = DateTime.Parse(requestEnd.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'end'")); }
if (end < start)
{
return(Templates.InvalidArguments("'end' must come after 'start'"));
}
var newLoanSpan = new DateTimeSpan(start, end);
if (newLoanSpan.Start < DateTime.Now.Date)
{
return(Templates.InvalidArgument("'start' may not be set earlier than today."));
}
if (newLoanSpan.Duration > MaxLoanDuration)
{
return(Templates.InvalidArgument($"Duration of the loan may not exceed {MaxLoanDuration.Days} days."));
}
// Get an unreserved product item
ProductItem item;
try {
item = Core_GetUnreservedItems(productId, newLoanSpan).FirstOrDefault();
} catch (Exception) {
return(Templates.NoItemsForProduct(productId));
}
if (item == null)
{
return(Templates.NoItemsForProduct($"Product '{productId}' has no items available during this time."));
}
var loan = new LoanItem(null, CurrentUser.Username, item.Id.Value, start, end);
Connection.Upload(loan);
//Create response
JObject response = new JObject()
{
{ "reason", null },
{ "responseData", new JObject()
{
{ "loanId", loan.Id },
{ "productItem", item.Id }
} }
};
return(response);
}