//
//  ViewController.swift
//  Todoey
//
//  Created by Jessamine Briones on 16/1/19.
//  Copyright © 2019 Jessamine Briones. All rights reserved.
//

import UIKit

class ToDoListViewController: UITableViewController {

    var itemArray = [Item]()

    let defaults = UserDefaults.standard

    let dataFilePath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first?.appendingPathComponent("Items.plist")

    override func viewDidLoad() {
        super.viewDidLoad()

        print (dataFilePath)

        let newItem = Item()
        newItem.title = "Buy dumplings"
        itemArray.append(newItem)

        let newItem2 = Item()
        newItem2.title = "Go to the beach"
        itemArray.append(newItem2)

        let newItem3 = Item()
        newItem3.title = "Buy ice cream"
        itemArray.append(newItem3)



        if let items = defaults.array(forKey: "ToDoListArray") as? [Item] {
            itemArray = items
        }
        // Do any additional setup after loading the view, typically from a nib.

    }

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


    }

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


        let cell = tableView.dequeueReusableCell(withIdentifier: "ToDoItemCell", for: indexPath)

        let item = itemArray[indexPath.row]

        cell.textLabel?.text = item.title

        cell.accessoryType = item.done ? .checkmark : .none

        return cell
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {


        itemArray[indexPath.row].done = !itemArray[indexPath.row].done

        saveItems()



        tableView.deselectRow(at: indexPath, animated: true)

    }

    //MARK - Add New Items

    @IBAction func addButtonPressed(_ sender: UIBarButtonItem) {

        var textField = UITextField()

        let alert = UIAlertController(title: "Add New Todoey Item", message: "", preferredStyle: .alert)
        let action = UIAlertAction(title: "Add Item", style: .default) { (action) in
            // what happens once user clicks add button in ui alert

            let newItem = Item()
            newItem.title = textField.text!

            self.itemArray.append(newItem)

            self.saveItems()



        }



        self.tableView.reloadData()

        alert.addTextField { (alertTextField) in
            alertTextField.placeholder = "Create new item"
            textField = alertTextField

            // extending the scope of the alertTextField by assigning var textField to it
        }

        alert.addAction(action)
        present(alert, animated: true, completion: nil)
    }


    func saveItems() {
        let encoder = PropertyListEncoder()

        do {
            let data = try encoder.encode(itemArray)
            try data.write(to: dataFilePath!)
        } catch {

            print("Error encoding item array, \(error)")


        }
    }

}