/// <summary>
/// This WEB API will get the list of closest address with distance in kilometer, defined in a config file.
/// </summary>
/// <param name="originAddress"></param>
/// <returns></returns>
//[HttpGet]
//public List<Address> Get(string originAddress)
//{
// List<Address> addresses = new List<Address>();
// List<Address> addressList = new List<Address>();
// try
// {
// using (var balObj = new BAL())
// {
// //function call for get all the address from either in cache or CSV file.
// addressList = balObj.GetAllAddresses();
// }
// foreach (var destinationAddress in addressList)
// {
// if (!string.IsNullOrEmpty(destinationAddress.Name))
// {
// //function call for getting the distance in kilometer between two address
// string km = GetLocationDistance(originAddress, destinationAddress.Name);
// if (!string.IsNullOrWhiteSpace(km))
// {
// if (km.Split(' ').Length > 0 && !string.IsNullOrEmpty(km.Split(' ')[0]))
// {
// var item = new Address
// {
// KM = Convert.ToInt32(km.Split(' ')[0]),
// Name = destinationAddress.Name
// };
// addresses.Add(item);
// }
// }
// }
// }
// if (addresses.Count > 0)
// {
// addresses = addresses.OrderBy(x => x.KM).Take(Convert.ToInt32(Constants.NumberOfAddress)).ToList();
// }
// }
// catch (Exception ex)
// {
// LogWrite.LogError(ex);
// }
// return addresses;
//}
/// <summary>
/// This method will find out the distance in kilometer between input and destination address via google API.
/// </summary>
/// <param name="Origin Address"></param>
/// <param name="Destination Address"></param>
/// <returns>Distance in kilometer</returns>
private string GetLocationDistance(string originAddress, string destinationAddress)
{
string distanceInKM = string.Empty;
try
{
var requestUri = string.Format(Constants.GoogleAPIUrl + "?origins={0}&destinations={1}&key={2}",
Uri.EscapeDataString(originAddress), Uri.EscapeDataString(destinationAddress), Constants.GoogleAPIKey);
var request = WebRequest.Create(requestUri);
var response = request.GetResponse();
if (response != null)
{
var xdoc = XDocument.Load(response.GetResponseStream());
var result = xdoc.Element("DistanceMatrixResponse").Element("row");
if (result != null)
{
var locationElement = result.Element("element").Element("distance");
if (locationElement != null)
{
var distance = locationElement.Element("text").Value;
if (!string.IsNullOrEmpty(distance))
{
distanceInKM = distance;
}
}
}
}
}
catch (Exception ex)
{
LogWrite.LogError(ex);
}
return(distanceInKM);
}
/// <summary>
/// This method used to retrieve the address list from CSV file.
/// </summary>
/// <returns>Address List</returns>
internal List<Address> GetAllAddresses()
{
List<Address> addressList = new List<Address>();
string cacheKeyName = "CSVAddressList";
string cacheDurantion = Constants.CacheTimeDuration;
// Get from Cache
try
{
if (CacheHelper.Exists(cacheKeyName))
{
CacheHelper.Get(cacheKeyName, out addressList);
if (addressList == null)
{
CacheHelper.Clear(cacheKeyName);
}
}
if (!CacheHelper.Exists(cacheKeyName))
{
string csvPath = string.Empty;
if (HttpContext.Current != null)
{
csvPath = HttpContext.Current.Server.MapPath(Constants.FileLocation);
}
else
{
csvPath = "D:\\Projects\\IsobarAssignment\\ClosestAddress\\ClosestAddress\\CSV\\Address_List_Australia.txt";
}
if (!string.IsNullOrWhiteSpace((csvPath)))
{
using (StreamReader reader = new StreamReader(csvPath))
{
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
if (!string.IsNullOrWhiteSpace(line.Trim().Substring(line.LastIndexOf(' '))))
{
addressList.Add(new Address
{
Name = line.Trim().Substring(0, line.LastIndexOf(' ')).Trim(),
KM = Convert.ToInt32(line.Trim().Substring(line.LastIndexOf(' ')).Trim())
});
}
}
}
}
if (addressList != null && addressList.Count > 0)
{
CacheHelper.Add(addressList, cacheKeyName, Convert.ToDouble(cacheDurantion));
}
}
}
catch (Exception ex)
{
LogWrite.LogError(ex);
}
return addressList;
}
public List <Address> Get(string originAddress)
{
List <Address> addressList = new List <Address>();
try
{
using (var balObj = new BAL())
{
//function call for get all the address from either in cache or CSV file.
addressList = balObj.GetAllAddresses();
if (addressList.Count > 0)
{
addressList = addressList.OrderBy(x => x.KM).Take(Convert.ToInt32(Constants.NumberOfAddress != null ? Constants.NumberOfAddress : "4")).ToList();
}
}
}
catch (Exception ex)
{
LogWrite.LogError(ex);
}
return(addressList);
}