//
//  Parques.swift
//  HelpMeParkIOS
//
//  Created by Rafael Silva on 04/06/2019.
//  Copyright © 2019 Alvaro. All rights reserved.
//

import Foundation
import FirebaseDatabase
import UIKit
import MapKit
import FirebaseAuth

class Parques: UIViewController, UITableViewDelegate, UITableViewDataSource {


    var parquesList = [Parque]()

    var coordenadas = [CLLocation]()

    var currentLoc = CLLocation()

    var distancias: [Float] = []

    var selectedLabel:String?
    var utilizador: String = ""
    var doubleToString: String = ""

    var closestLocation: CLLocation?

    var smallestDistance: CLLocationDistance?


    var dbHandle: DatabaseHandle?


    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {


        return parquesList.count


    }





    @IBOutlet weak var nrlugares: UILabel!


    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {


        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! ParqueViewCell


        self.parquesList = parquesList.sorted(by: {$0.distancia! < $1.distancia!})
        cell.lblName.text = self.parquesList[indexPath.row].nomeParque


        //Label do Nome
        cell.lblName.font = UIFont(name: "Arial-BoldMT", size:30);
        cell.lblName.textColor = UIColor.white
        cell.lblName.sizeToFit()



        cell.accessoryType = UITableViewCell.AccessoryType.detailDisclosureButton

        cell.backgroundView = UIImageView(image: UIImage(named: "table"))

        cell.tintColor = UIColor.white







        return cell

    }



   func tableView(_ tableView: UITableView, accessoryButtonTappedForRowWith indexPath: IndexPath) {

    let alert = UIAlertController(title: "Informações", message:"Nome do Parque: " + parquesList[indexPath.row].nomeParque + "\n" + "\n" + " Distancia à sua localizacao: " + String(format:"%.2f",parquesList[indexPath.row].distancia!) + " KM", preferredStyle: UIAlertController.Style.alert)
        alert.addAction(UIAlertAction(title: "Fechar", style: UIAlertAction.Style.default, handler: nil))
        self.present(alert, animated: true, completion: nil)

        alert.view.tintColor = UIColor.red;


    }







    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        print(parquesList[indexPath.row].nomeParque)
        self.performSegue(withIdentifier: "detalheParque", sender: indexPath)
    }



    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "detalheParque" {
            let idx = sender as! IndexPath
            let vcdetalhe = (segue.destination as! DetailParque)
            vcdetalhe.parquesList = parquesList[idx.row].nomeParque
        }
    }


    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {

        return 100
    }




    //SET FIREBASE REFERENCE
    let ref = Database.database().reference()

    var databaseHandle:DatabaseHandle?


    @IBOutlet weak var tableView: UITableView!

    override func viewDidLoad() {

        print(utilizador)

        tableView.delegate = self




            tableView.backgroundView = UIImageView(image: UIImage(named: "table"))


        let uid = (Auth.auth().currentUser?.uid)!

        dbHandle = ref.child("Users").child(uid).child("latestLoc").observe(.value, with: {
            (snapshot) in


            let currentLat = snapshot.childSnapshot(forPath:"latitude").value as? String

            let currentLng = snapshot.childSnapshot(forPath:"longitude").value as? String

            self.currentLoc = CLLocation(latitude: Double(currentLat!) as! CLLocationDegrees, longitude: Double(currentLng!) as! CLLocationDegrees)
            print(self.currentLoc)
            self.getParques()

        })


    }

    func getParques() {
        self.parquesList = []
        ref.child("Parques").observe(.childAdded,    with: {
            snapshot in

            print(snapshot)

            let nome = (snapshot.value as? NSDictionary)!["nome"] as! String

            let auxLat = (snapshot.value as? NSDictionary)!["Latitude"] as! String

            let auxLong = (snapshot.value as? NSDictionary)!["Longitude"] as! String

            let latitude = Double(auxLat)
            let longitude = Double(auxLong)
            let location = CLLocation(latitude: latitude!, longitude: longitude!)
            let distance = self.currentLoc.distance(from: location)
            print(nome, distance)
            self.parquesList.append(Parque(nome: nome, distancia: Double((distance) / 1000)))
            print(self.parquesList)
            self.coordenadas.append(CLLocation(latitude: Double(auxLat) as! CLLocationDegrees, longitude: Double(auxLong) as! CLLocationDegrees))

            self.tableView.reloadData()

            print(self.parquesList)


        })
    }

}