ContactsViewController.swift

//
//  ContactsViewController.swift
//  ContactsApp
//
//  Created by User on 3/13/20.
//  Copyright © 2020 jheisecke. All rights reserved.
//

import UIKit
import ContactsUI

class ContactsViewController: UIViewController {
    
    @IBOutlet weak var contactsTable: UITableView!
    
    var contacts = [CNContact]()
    let contactStore = CNContactStore()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        importContacts()
        contactsTable.tableFooterView = UIView(frame: .zero)
    }
    
    func importContacts() {
        
        let keys = [CNContactFormatter.descriptorForRequiredKeys(for: .fullName)]
        //obtengo
        let request = CNContactFetchRequest(keysToFetch: keys)
        request.sortOrder = CNContactSortOrder.givenName
        do {
            try self.contactStore.enumerateContacts(with: request) {
                (contact, stop) in
                // Array containing all unified contacts from everywhere
                self.contacts.append(contact)
            }
        }
        catch {
            print("unable to fetch contacts")
        }

        print(contacts)
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if let singleContactVC = segue.destination as? SingleContactViewController {
            if let selectedCnt = sender as? CNContact {
                singleContactVC.selectedContact = selectedCnt
            }
        }
    }
}
extension ContactsViewController: UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return contacts.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "contactName")!
        cell.textLabel?.text = "\(contacts[indexPath.row].givenName) \(contacts[indexPath.row].familyName)"
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let selectedContact = contacts[indexPath.row]
        performSegue(withIdentifier: "gotocontact", sender: selectedContact)
    }
    

}