private void ValidateRequest(PriceRequest request, ref string errorMessage)
{
if (request.RiskData == null)
{
errorMessage = PriceRequestErrors.Risk_Data_Missing;
return;
}
if (string.IsNullOrEmpty(request.RiskData.FirstName))
{
errorMessage = PriceRequestErrors.First_Name_Required;
return;
}
if (string.IsNullOrEmpty(request.RiskData.LastName))
{
errorMessage = PriceRequestErrors.Surname_Required;
return;
}
if (request.RiskData.Value == 0)
{
errorMessage = PriceRequestErrors.Value_Required;
return;
}
}
//pass request with risk data with details of a gadget, return the best price retrieved from 3 external quotation engines
public PriceResponse GetPrice(PriceRequest request, out string errorMessage)
{
errorMessage = string.Empty;
var result = new PriceResponse();
this.ValidateRequest(request, ref errorMessage);
if (errorMessage.Length > 0)
{
return(result);
}
//now call 3 external system and get the best price
foreach (var quoteSys in this.GetQuotationSystems(request))
{
var systemResponse = quoteSys.GetPrice(request);
if (this.IsResponseValid(systemResponse) && systemResponse.Price < result.Price)
{
result.Price = Math.Min(systemResponse.Price, result.Price);
result.InsurerName = systemResponse.Name;
result.Tax = systemResponse.Tax;
}
}
return(result);
}
static void Main(string[] args)
{
//SNIP - collect input (risk data from the user)
var request = new PriceRequest()
{
RiskData = new RiskData() //hardcoded here, but would normally be from user input above
{
DOB = DateTime.Parse("1980-01-01"),
FirstName = "John",
LastName = "Smith",
Make = "Cool New Phone",
Value = 500
}
};
var priceEngine = new PriceEngine();
var error = string.Empty;
var priceResponse = priceEngine.GetPrice(request, out error);
if (priceResponse.Price == Decimal.MaxValue)
{
Console.WriteLine(String.Format("There was an error - {0}", error));
}
else
{
Console.WriteLine(String.Format("You price is {0}, from insurer: {1}. This includes tax of {2}",
priceResponse.Price, priceResponse.InsurerName, priceResponse.Tax));
}
Console.WriteLine("Press any key to exit");
Console.ReadKey();
}
private bool IsValidMakeForSystem2(PriceRequest request)
{
var makeList = new List <string> {
"examplemake1", "examplemake2", "examplemake3"
};
return(makeList.IndexOf(request.RiskData.Make) >= 0);
}
private IList <IQuotationSystem> GetQuotationSystems(PriceRequest request)
{
var quotationSystems = new List <IQuotationSystem>();
if (this.IsValidMakeForSystem1(request))
{
quotationSystems.Add(new QuotationSystem1("http://quote-system-1.com", "1234"));
}
if (this.IsValidMakeForSystem2(request))
{
quotationSystems.Add(new QuotationSystem2("http://quote-system-2.com", "1235"));
}
quotationSystems.Add(new QuotationSystem3("http://quote-system-3.com", "100"));
return(quotationSystems);
}
static async Task Main(string[] args)
{
DateTime?DOB = null;
decimal? value = null;
if (DateTime.TryParse(args[4], out var parsedDOB))
{
DOB = parsedDOB;
}
if (decimal.TryParse(args[3], out var parsedValue))
{
value = parsedValue;
}
var request = new PriceRequest
{
RiskData = new RiskData //hardcoded here, but would normally be from user input above
{
DOB = DOB,
FirstName = args[0],
LastName = args[1],
Make = args[2],
Value = value
}
};
var priceEngine = DIContainer.ResolvePriceEngine();
var price = await priceEngine.GetPrice(request);
Console.WriteLine(!price.Success
? $"There was an error - {price.SquashErrors()}"
: $"You price is {price.Value.Price}, from insurer: {price.Value.InsurerName}. This includes tax of {price.Value.Tax}");
Console.WriteLine("Press any key to exit");
Console.ReadKey();
}
private bool IsValidMakeForSystem1(PriceRequest request)
{
return(request.RiskData.DOB.HasValue);
}
//pass request with risk data with details of a gadget, return the best price retrieved from 3 external quotation engines
public decimal GetPrice(PriceRequest request, out decimal tax, out string insurerName, out string errorMessage)
{
//initialise return variables
tax = 0;
insurerName = "";
errorMessage = "";
//validation
if (request.RiskData == null)
{
errorMessage = "Risk Data is missing";
return(-1);
}
if (String.IsNullOrEmpty(request.RiskData.FirstName))
{
errorMessage = "First name is required";
return(-1);
}
if (String.IsNullOrEmpty(request.RiskData.LastName))
{
errorMessage = "Surname is required";
return(-1);
}
if (request.RiskData.Value == 0)
{
errorMessage = "Value is required";
return(-1);
}
//now call 3 external system and get the best price
decimal price = 0;
//system 1 requires DOB to be specified
if (request.RiskData.DOB != null)
{
QuotationSystem1 system1 = new QuotationSystem1("http://quote-system-1.com", "1234");
dynamic systemRequest1 = new ExpandoObject();
systemRequest1.FirstName = request.RiskData.FirstName;
systemRequest1.Surname = request.RiskData.LastName;
systemRequest1.DOB = request.RiskData.DOB;
systemRequest1.Make = request.RiskData.Make;
systemRequest1.Amount = request.RiskData.Value;
dynamic system1Response = system1.GetPrice(systemRequest1);
if (system1Response.IsSuccess)
{
price = system1Response.Price;
insurerName = system1Response.Name;
tax = system1Response.Tax;
}
}
//system 2 only quotes for some makes
if (request.RiskData.Make == "examplemake1" || request.RiskData.Make == "examplemake2" ||
request.RiskData.Make == "examplemake3")
{
dynamic systemRequest2 = new ExpandoObject();
systemRequest2.FirstName = request.RiskData.FirstName;
systemRequest2.LastName = request.RiskData.LastName;
systemRequest2.Make = request.RiskData.Make;
systemRequest2.Value = request.RiskData.Value;
QuotationSystem2 system2 = new QuotationSystem2("http://quote-system-2.com", "1235", systemRequest2);
dynamic system2Response = system2.GetPrice();
if (system2Response.HasPrice && system2Response.Price < price)
{
price = system2Response.Price;
insurerName = system2Response.Name;
tax = system2Response.Tax;
}
}
//system 3 is always called
QuotationSystem3 system3 = new QuotationSystem3("http://quote-system-3.com", "100");
dynamic systemRequest3 = new ExpandoObject();
systemRequest3.FirstName = request.RiskData.FirstName;
systemRequest3.Surname = request.RiskData.LastName;
systemRequest3.DOB = request.RiskData.DOB;
systemRequest3.Make = request.RiskData.Make;
systemRequest3.Amount = request.RiskData.Value;
var system3Response = system3.GetPrice(systemRequest3);
if (system3Response.IsSuccess && system3Response.Price < price)
{
price = system3Response.Price;
insurerName = system3Response.Name;
tax = system3Response.Tax;
}
if (price == 0)
{
price = -1;
}
return(price);
}