//
//  ViewController.swift
//  uiSaveLoadArray
//
//  Created by Michael Wilhelm on 25/04/2016.
//  Copyright © 2016 Michael Wilhelm. All rights reserved.
//

import UIKit

class ViewController: UIViewController {
    
    
    
    class Custom:NSObject, NSCoding {
        var name:String = ""
        var customno:Int32=0
        init(_ name:String, _ customno:Int32) {
            self.name=name
            self.customno=customno
        }
        
        
        override var description:String {
            return name + ", " + String(customno)
        }
        
        // Protocol NSCoding
        required init?(coder aDecorder:NSCoder){
            name = aDecorder.decodeObjectForKey("name") as! String
            //customno=  aDecorder.decodeObjectForKey("customno") as! Int32
            customno=  aDecorder.decodeInt32ForKey("customno")
        }
        
        func encodeWithCoder(aCoder: NSCoder) {
            aCoder.encodeObject(name, forKey:"name")
            aCoder.encodeInt32(customno, forKey: "customno")
        }

    }  // Custom
    
    // save the customs
    var feld = [Custom]()
    
    
    // uiAttribute
    @IBOutlet var tErgebnis: UITextView!
    
    @IBOutlet var labelTest: UILabel!
    
    //uiEvents
    @IBAction func bnSaveActionClick(sender: UIButton) {
        saveArray2File()
    }
    
    @IBAction func bnLoadActionClick(sender: UIButton) {
        loadArrayFromFile()
        setErgebnisse()
    }
    
    @IBAction func bnInsertActionClick(sender: UIButton) {
        let n:Int = feld.count
        let custom= Custom("Pundt" , 12347+n)
        feld.append(custom)
        labelTest.text="xx: " + String(feld.count)
        setErgebnisse()
    }
    
    // save the data with NSKeyedArchiver
    
    func setErgebnisse() {
        var erg:String = ""
        for customin feld {
            erg = erg + custom.description + "\n"
        }
        tErgebnis.text = ""
        tErgebnis.text = erg
        
    }
    
    func saveArray2File() {
        if feld.count == 0 {
            return
        }
        let filename:String = getPathFilename()
        if  filename.characters.count > 0 {
            NSKeyedArchiver.archiveRootObject(feld, toFile: filename)
        }
    }
    
    func loadArrayFromFile(){
        let filename:String = getPathFilename()
        if  filename.characters.count > 0 {
            if let result = NSKeyedUnarchiver.unarchiveObjectWithFile(filename) as? [Custom]{
                feld = result
            }
        }
    }
    
    
    private func getPathFilename() -> String {
        let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
        if let path = paths.first {
            return path+"/custom.bin"
        }
        else {
            return ""
        }
    }
    
    

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        var custom= Custom("Meier", 12345)
        feld.append(custom)
        custom= Custom("Schmidt", 12347)
        feld.append(custom)
        setErgebnisse()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
   

}