//

//  TableViewController.swift

//  TestCoreData

//

//

import CoreData

import UIKit

class TableViewController: UITableViewController {

    //懒加载 需指定 该变量的类型是 AppDelegate

    lazy var appDelegate:AppDelegate = {

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

        return app

    }()

//    var peoples = [NSManagedObject]()

    var peoples = [Person]()

    // MARK: - add a name

    @IBAction func add(sender: UIBarButtonItem) {

        let alert = UIAlertController(title: "add a name", message: "", preferredStyle: .Alert)

        let addAction = UIAlertAction(title: "add", style: UIAlertActionStyle.Default) { (action :UIAlertAction) -> Void in

            let name = alert.textFields![].text

            let age = alert.textFields![].text! as NSString

            self.saveName(name!,age: age.integerValue)

            let indexPath = NSIndexPath(forRow: self.peoples.count-, inSection: )

            self.tableView.insertRowsAtIndexPaths([indexPath], withRowAnimation: .Left)

        }

        let cancelAction = UIAlertAction(title: "cancel", style: .Default, handler: nil)

        alert.addAction(addAction)

        alert.addAction(cancelAction)

        alert.addTextFieldWithConfigurationHandler(nil)

        alert.addTextFieldWithConfigurationHandler(nil)

        self.presentViewController(alert, animated: true, completion: nil)

    }

    func saveName(name:String,age:Int){

        let context = appDelegate.managedObjectContext

        let person = NSEntityDescription.insertNewObjectForEntityForName("Person", inManagedObjectContext: context) as! Person;

        person.name = name

        person.age = age

//        let entity = NSEntityDescription.entityForName("Person", inManagedObjectContext: context)

//        let person = NSManagedObject(entity: entity!, insertIntoManagedObjectContext: context)

//        person(name, forKey: "name")

        do{

            try context.save()

            peoples.append(person)

        }catch let error as NSError{

            print("could not save object\(error) , \(error.userInfo)")

        }

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

    }

    // MARK: - Table view data source

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

        return

    }

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

        return peoples.count

    }

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

        let cell = tableView.dequeueReusableCellWithIdentifier("mycell", forIndexPath: indexPath)

//        cell.textLabel?.text = peoples[indexPath.row].valueForKey("name") as? String

        let name = peoples[indexPath.row].name

        let age = peoples[indexPath.row].age

        cell.textLabel?.text = "\(name!) -----> \(age!) 岁"

        return cell

    }

    override func viewDidLoad() {

        self.title = "name list"

        let context = appDelegate.managedObjectContext

        let request = NSFetchRequest(entityName: "Person")

        do{

//            let result = try context?.executeFetchRequest(request) as! [NSManagedObject]

//            self.peoples = result

            let result = try context.executeFetchRequest(request) as! [Person]

            self.peoples = result

        } catch let error as NSError{

            print("could not fecth \(error) , \(error.userInfo)")

        }

    }

}