using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using WmBigRegisterInterface.BigRegisterService;

namespace WmBigRegisterInterface {
    public class BigRegisterInterface {

        public static bool isValidBigNumber(string value) {
            // first we do some simple check, to prevent traffic on the web service
            // 1) check if we have at least something:
            if (String.IsNullOrEmpty(value)) {
                return false;
            }

            // 2) the value must not exceed 11
            if (value.Length > 11) {
                return false;
            }

            // 3) a big NUMBER is always a number. 
            long number = 0;
            bool isNumber = long.TryParse(value, out number);
            if(!isNumber){
                return false;
            }

            // allright, seems to be OK so far, prepare the call to the web service;
            bool isNumberVerified = false;

            BigRegisterService.PublicV4SoapClient client = new PublicV4SoapClient("PublicV4Soap");

            BigRegisterService.ListHcpApproxRequest request = new BigRegisterService.ListHcpApproxRequest();
            request.WebSite = SourceWebSite.Ribiz;
            request.RegistrationNumber = number.ToString();

            try {
                BigRegisterService.ListHcpApproxResponse4 response = client.ListHcpApprox4(request);

                isNumberVerified = (response.ListHcpApprox.Length == 1);
                
                // Could do more magic by actually analysing the data here:
                //foreach (ListHcpApprox4 result in response.ListHcpApprox) {
                //    Console.WriteLine("Read result: " + result.BirthSurname);
                //}


            } catch (Exception error) {
                System.Diagnostics.Trace.WriteLine("WmBigRegisterInterface.isValidBigNumber: error. " + error.Message);
            }

            return isNumberVerified;
        }

    }
}