Swift3 - sort tableview by location - ios

Question

I try to sort my tableView by distance form the current location. I search on the website but is it very difficult for me to adapte on my projet what I find
Can you help me please?
Here is my first files for data "Cables.swift":
import Foundation
import MapKit
class Person {
var identifier:Int
var name:String
var country:String
var email:String
var website:String
var facebook:String
var adress:String
var phone:String
var latitude:Double
var longitude:Double
var lac:Int
var poulie1:Int
var rotation1:String
var module1:Int
var poulie2:Int
var rotation2:String
var module2:Int
var distance:Double
var smallPhotoUrl:URL! {
return URL(string: "http://wakefinder.16mb.com/full/\(self.identifier).jpg")
}
var largePhotoUrl:URL! {
return URL(string: "http://wakefinder.16mb.com/full/\(self.identifier).jpg")
}
//var coordinate: CLLocationCoordinate2D
init?(fromData personData:[String:AnyObject]) {
guard let identifier = personData["id"] as? Int,
let name = personData["name"] as? String,
let country = personData["country"] as? String,
let email = personData["email"] as? String,
let website = personData["website"] as? String,
let facebook = personData["facebook"] as? String,
let adress = personData["adress"] as? String,
let phone = personData["phone"] as? String,
let latitude = personData["lat"] as? Double,
let longitude = personData["lng"] as? Double,
let lac = personData["lac"] as? Int,
let poulie1 = personData["poulie1"] as? Int,
let rotation1 = personData["rotation1"] as? String,
let module1 = personData["module1"] as? Int,
let poulie2 = personData["poulie2"] as? Int,
let rotation2 = personData["rotation2"] as? String,
let module2 = personData["module2"] as? Int
else {
return nil
}
self.identifier = identifier
self.name = name
self.country = country
self.email = email
self.website = website
self.facebook = facebook
self.adress = adress
self.phone = phone
self.latitude = latitude
self.longitude = longitude
self.lac = lac
self.poulie1 = poulie1
self.rotation1 = rotation1
self.module1 = module1
self.poulie2 = poulie2
self.rotation2 = rotation2
self.module2 = module2
}
// Function to calculate the distance from given location.
func calculateDistance(fromLocation: CLLocation?) {
let location = CLLocation(latitude: self.latitude, longitude: self.longitude)
distance = location.distance(from: fromLocation!)
}
}
and the file for my TableView:
import UIKit
import Alamofire
import CoreLocation
class cableViewController: UITableViewController, UISearchResultsUpdating {
var _personList:[Person] = []
var _personFiltered:[Person] = []
let searchController = UISearchController(searchResultsController: nil)
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
Alamofire.request("http://wakefinder.16mb.com/users.json")
.validate()
.responseJSON { (response) in
if response.result.isSuccess {
let rawPersonList = response.result.value as! [[String:AnyObject]]
for personData in rawPersonList {
if let personObject = Person(fromData: personData) {
self._personList.append(personObject)
}
}
self.tableView.reloadData()
} else {
print(response.result.error as Any)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if searchController.isActive && searchController.searchBar.text != "" {
return _personFiltered.count
}
return _personList.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:cablesTableViewCell! = tableView.dequeueReusableCell(withIdentifier: "cable_cell") as! cablesTableViewCell
if searchController.isActive && searchController.searchBar.text != "" {
let person:Person = _personFiltered[indexPath.row]
cell.display(person: person)
//_personList[indexPath.row] = _personFiltered[indexPath.row]
} else {
let person:Person = _personList[indexPath.row]
cell.display(person: person)
}
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showDetail" {
if let cell = sender as? UITableViewCell {
if let indexPath = self.tableView.indexPath(for: cell) {
let selectedPerson: Person
if searchController.isActive && searchController.searchBar.text != "" {
selectedPerson = _personFiltered[indexPath.row]
} else {
selectedPerson = _personList[indexPath.row]
}
let personViewController:fichesViewController = segue.destination as! fichesViewController
personViewController._person = selectedPerson
}
}
}
}
func updateSearchResults(for searchController: UISearchController) {
filterContent(searchText: self.searchController.searchBar.text!)
}
func filterContent(searchText:String) {
_personFiltered = _personList.filter { user in
let username = user.name
return(username.lowercased().contains(searchText.lowercased()))
}
self.tableView.reloadData()
}
}