public static IEnumerable <CustomerModel> Execute(string[] args)
{
ConsoleInput input = new ConsoleInput();
ParseFilePath(args[0], ref input);
IEnumerable <string> lines = null;
if (input.FilePath != null)
{
lines = File.ReadLines(input.FilePath);
ParseDelimiter(args[1], ref input);
ParseCommand(args[2], ref input);
ParseCommandOption(args[3], ref input);
}
CustomerCollection collection = new CustomerCollection();
var customers = DataParser.Execute(lines, input.Delimiter);
collection.AddRange(customers);
return(collection.Sort(input.CommandOption));
}