//
// ViewController.swift
// AppDevTsumshopping
//
// Created by Selena on 2018/8/18.
// Copyright © 2018年 Selena. All rights reserved.
//

import UIKit
var goal: Date!
var now: Date!

class ViewController: UIViewController {
@IBOutlet weak var goalTextField: UITextField! //開幕時間的文字顯示
@IBOutlet weak var myDatePicker: UIDatePicker! //時間選擇器
@IBOutlet weak var nowTextField: UITextField! //今天的文字顯示
@IBOutlet weak var intervalTextField: UITextField!
@IBOutlet weak var myImageView1: UIImageView! //mySegmentedControl對應的那張圖片 定義
@IBOutlet weak var sliderLabel: UILabel! //被Slider調整字體大小的文字
@IBOutlet weak var fontSizeSlider: UISlider! //Slider調整字體大小

override func viewDidLoad() {
myDatePicker.minimumDate = Date() //防止時間變成負數
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}

//以下是時間倒數器的程式碼
@IBAction func myDatePickerAction(_ sender: UIDatePicker) {
goal = sender.date // myDatePicker選擇的日子
let now = Date()
let formatter = DateFormatter()
formatter.dateFormat = "yyyy MM dd" // 顯示在 text field 的時間日期格式
let time = formatter.string(from: now)
self.nowTextField.text = time
let interval = goal.timeIntervalSince(now) //目標日跟現在時間的差
goalTextField.text = formatter.string(from: myDatePicker.date) //更新 text field 內容
let integerinterval = Int(interval/60/60/24+1) //讓天數正常增加
intervalTextField.text = ("\(integerinterval)")
print(integerinterval) //輸出計算結果
}

//以下是mySegmentedControl的程式碼
@IBAction func mySegmentedControl(_ sender: UISegmentedControl) {
if sender.selectedSegmentIndex == 0 { //判斷點選了哪個segmented
myImageView1.image = UIImage(named: "images-4") //顯示 Mickey
}else {
myImageView1.image = UIImage(named: "images-2") //顯示 Partners
}
}

//以下是用 Slider 調整 font Size 的程式碼
@IBAction func sliderAction(_ sender: UISlider) {
print("slider value \(fontSizeSlider.value)")
self.sliderLabel.font = UIFont.systemFont(ofSize: CGFloat(fontSizeSlider.value))
}
}