//
//  ViewController.swift
//  BindUIElements
//
//  Created by Scott Gardner on 6/1/16.
//  Copyright © 2016 Scott Gardner. All rights reserved.
//

import UIKit
import RxSwift
import RxCocoa

class ViewController: UIViewController {

    @IBOutlet weak var tapGestureRecognizer: UITapGestureRecognizer!
    @IBOutlet weak var textField: UITextField!
    @IBOutlet weak var textFieldLabel: UILabel!
    @IBOutlet weak var textView: TextView!
    @IBOutlet weak var textViewLabel: UILabel!
    @IBOutlet weak var button: Button!
    @IBOutlet weak var buttonLabel: UILabel!
    @IBOutlet weak var segmentedControl: UISegmentedControl!
    @IBOutlet weak var segmentedControlLabel: UILabel!
    @IBOutlet weak var slider: UISlider!
    @IBOutlet weak var progressView: UIProgressView!
    @IBOutlet weak var aSwitch: UISwitch!
    @IBOutlet weak var activityIndicator: UIActivityIndicatorView!
    @IBOutlet weak var stepper: UIStepper!
    @IBOutlet weak var stepperLabel: UILabel!
    @IBOutlet weak var datePicker: UIDatePicker!
    @IBOutlet weak var datePickerLabel: UILabel!

    let disposeBag = DisposeBag()

    lazy var dateFormatter: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateStyle = .medium
        formatter.timeStyle = .short
        return formatter
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        tapGestureRecognizer.rx.event.asDriver()
            .drive(onNext: { [unowned self] (recognizer) in
                self.view.endEditing(true)
            })
            .addDisposableTo(disposeBag)

        textField.rx.text.asDriver()
            .drive(textFieldLabel.rx.text)
            .addDisposableTo(disposeBag)

        textView.rx.text.asControlProperty()
            .bind { [unowned self] (value) in
                self.textViewLabel.rx.text.onNext("Characters count: \(String(describing: value?.characters.count))")
            }
            .addDisposableTo(disposeBag)

        button.rx.tap.asDriver()
            .drive(onNext: { [unowned self] () in
                self.buttonLabel.text! += "Tapped! "
                self.view.endEditing(true)
                UIView.animate(withDuration: 0.3, animations: {
                    self.view.layoutIfNeeded()
                })
            })
            .addDisposableTo(disposeBag)

        segmentedControl.rx.value.asDriver()
            .skip(1)
            .drive(onNext: { [unowned self] (val) in
                self.segmentedControlLabel.text = "Selected segment: \(val)"
                UIView.animate(withDuration: 0.3, animations: {
                    self.view.layoutIfNeeded()
                })
            }).addDisposableTo(disposeBag)

        slider.rx.value.asDriver()
            .drive(progressView.rx.progress)
            .addDisposableTo(disposeBag)

        aSwitch.rx.value.asDriver()
            .map{!$0}
            .drive(activityIndicator.rx.isHidden)
            .addDisposableTo(disposeBag)

        aSwitch.rx.value.asDriver()
            .drive(activityIndicator.rx.isAnimating)
            .addDisposableTo(disposeBag)


        stepper.rx.value.asDriver()
            .map{ String(Int($0)) }
            .drive(onNext: { [unowned self] (value) in
                self.stepperLabel.text = value
            })
            .addDisposableTo(disposeBag)

        datePicker.rx.date.asDriver()
            .map{ [unowned self] in
                self.dateFormatter.string(from: $0)
            }
            .drive(onNext: { [unowned self] in
                self.datePickerLabel.text = "Selected date is \($0)"
            })
            .addDisposableTo(disposeBag)
    }

}