//
//  robotTableViewController.swift
//  aiSonar
//
//  Created by Ayad on 12/11/18.
//  Copyright © 2018 sonar.io. All rights reserved.
//

import UIKit
import CoreData

class RobotTableViewController: UITableViewController {


    @IBOutlet weak var cerrarSesion: UIBarButtonItem!

    var listaRobot = [Robot](){
        didSet{
            self.tableView.reloadData()
        }
    }

    @IBOutlet weak var saveBoton: UIBarButtonItem!

    @IBAction func cerrarSesion(sender: UIBarButtonItem) {
        let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)

        let nextViewController = storyBoard.instantiateViewControllerWithIdentifier("LoginViewController") as! LoginViewController
        self.presentViewController(nextViewController, animated:true, completion:nil)
    }


    // MARK: View lifecycle functions

    override func viewDidLoad() {
        super.viewDidLoad()
        title = "Robots"
        let textAttributes = [NSForegroundColorAttributeName: UIColor(red: 40/255, green: 175/255, blue: 176/255, alpha: 1)]
        navigationController?.navigationBar.titleTextAttributes = textAttributes

        cerrarSesion.title = "Logout"
        cerrarSesion.tintColor = UIColor.whiteColor()
        cerrarSesion.setBackgroundImage(UIImage(named: "botonAnadir.png"), forState: .Normal, style: .Plain, barMetrics: .Default)
        //cerrarSesion.setTitlePositionAdjustment(UIOffset(horizontal: 2, vertical: 0), forBarMetrics: .Default)

        self.navigationItem.leftBarButtonItem = cerrarSesion

        saveBoton.tintColor = UIColor.whiteColor()
        saveBoton.setBackgroundImage(UIImage(named: "botonAnadir.png"), forState: .Normal, barMetrics: .Default)

        let backgroundImage = UIImage(named: "radar.jpg")
        let imageView = UIImageView(image: backgroundImage)
        imageView.contentMode = .ScaleAspectFit
        self.tableView.backgroundView = imageView

        tableView.backgroundColor = UIColor.lightGrayColor()

        tableView.tableFooterView = UIView(frame: CGRectZero)
    }


    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)

        self.tabBarController?.tabBar.hidden = false

        let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

        let managedContext = appDelegate.managedObjectContext

        let fetchRequest = NSFetchRequest(entityName: "User")

        let loggedUsername = NSUserDefaults.standardUserDefaults().valueForKey("username") as! String

        let predicate = NSPredicate(format: "username == %@", loggedUsername)

        fetchRequest.predicate = predicate

        do {
            let loggedUser = (try managedContext.executeFetchRequest(fetchRequest) as! [User]).first!

            self.listaRobot = loggedUser.mutableSetValueForKey("robots").allObjects as! [Robot]
        } catch {
            print("Error while fetching logged user")
        }
    }

    // MARK: Table view definition

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return listaRobot.count
    }

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

        let person = listaRobot[indexPath.row]

        let cell = tableView.dequeueReusableCellWithIdentifier("RobotTableViewCell", forIndexPath: indexPath) as! RobotTableViewCell

        let dataImg: NSData = person.valueForKeyPath("image") as! NSData

        cell.foto.image = UIImage(data: dataImg)


        cell.nombre.text = person.valueForKeyPath("name") as? String

        cell.accessoryType = UITableViewCellAccessoryType.DisclosureIndicator

        return cell
    }

    override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
        if editingStyle == .Delete {
            guard let appDelegate = UIApplication.sharedApplication().delegate as? AppDelegate else {
                return
            }

            let managedContext = appDelegate.managedObjectContext

            managedContext.deleteObject(listaRobot[indexPath.row])

            do{
                try managedContext.save()
                listaRobot.removeAtIndex(indexPath.row)
                self.tableView.reloadData()
            }catch{
                print("Error")

            }
        }
    }

    override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
        cell.backgroundColor = UIColor(white: 1, alpha: 0.5)
    }



    // MARK: Navigation

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
            let volver = UIBarButtonItem()
            volver.title = "< Volver"
            volver.setBackButtonBackgroundImage(UIImage(named: "botonEditar.png"), forState: .Normal, barMetrics: .Default)
            navigationItem.backBarButtonItem = volver

        if segue.identifier == "robotDetail" {
            let selectedCell = sender as! RobotTableViewCell
            let destinationVC = segue.destinationViewController as! RobotDetailsViewController
            let selectedRow = tableView.indexPathForCell(selectedCell)

            destinationVC.robot = listaRobot[(selectedRow?.row)!]
        }
    }
}

class RobotTableViewCell: UITableViewCell {
    @IBOutlet weak var foto: UIImageView!
    @IBOutlet weak var nombre: UILabel!
}