/// <summary>
/// This method follows below steps
/// 1. Validate Configuration details we have in Appsettings.json file.
/// 2. return false if any data missing from configuration file.
/// 3. If True, validate the point 1 Company Longitude and Latitude valid or not.
/// 4. If not valid, return false else Read customer details from Input file and map to Customer object.
/// 5. Return false if Customer object is empty, else Find Distance and check the distance within 100km.
/// 6. Generate an new Customer onbject which will have only customers who are eligible for invitation.
/// 7. Write eligible customer into out put file in Ascending order of User_Id.
/// 8. If there is no eligible customer return false
/// </summary>
/// <returns>True if we have eligible customer else return false</returns>
public bool Run()
{
if (_configurationValidator.ValidateConfiguration(_configuration.Value))
{
string inputFilePath = _configuration.Value.InputFilePath;
string outputFilePath = _configuration.Value.OutputFilePath;
double longitude1 = (double)_configuration.Value.Longitude1;
double latitude1 = (double)_configuration.Value.Latitude1;
double withInDistance = (double)_configuration.Value.WithInDistance;
IList <Customer> eligibleCustomers = new List <Customer>();
if (_distanceOperations.ValidatePoint(longitude1, latitude1))
{
IList <Customer> customers = _fileOperations.Read(inputFilePath);
if (customers.Count > 0)
{
_logger.LogInformation("Searching customers who are living within..."
+ withInDistance + "km");
foreach (Customer customer in customers)
{
if (_distanceOperations.ValidatePoint(customer.Longitude, customer.Latitude))
{
double distance = _distanceOperations.CalculateDistance(longitude1, latitude1,
customer.Longitude, customer.Latitude);
if (distance < withInDistance)
{
eligibleCustomers.Add(customer);
}
}
else
{
_logger.LogWarning("Customer Longitude/Latitude is in-valid, " +
"Note: Latitude Must be in [-90, 90] interval " +
"and Longitude Must be in [-180, 180] interval;customer details, " +
"username:{0}, user_id:{1}", customer.Name, customer.UserId);
}
}
if (eligibleCustomers.Count > 0)
{
_fileOperations.Write(outputFilePath, eligibleCustomers.OrderBy(x => x.UserId).ToList());
}
else
{
_logger.LogInformation("There is no Customers living within " + withInDistance + "km");
return(false);
}
}
else
{
_logger.LogError("We couldnt read Json data from input file");
return(false);
}
}
else
{
_logger.LogError("Company Longitude/Latitude is in-valid, please correct configuration file");
return(false);
}
}
else
{
return(false);
}
_logger.LogInformation("We found some customers who are eligible for our invitation. " +
"Please find the output file from following location {0}", _configuration.Value.OutputFilePath);
return(true);
}