LONDON-IOS/GMERemittance/Transaction/CalendarViewController.swift

//
//  CalendarViewController.swift
//  GMERemittance
//
//  Created by Fm-user on 3/6/18.
//  Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

protocol CalendarViewDelegate {
    func getDate(fromDate:String,toDate:String)
    func goBackOneScreen()
}

class CalendarViewController: PopUpSavingViewController {

    @IBOutlet weak var calendarParentView: UIView!
    @IBOutlet weak var fromDateTextField: UITextField!
    @IBOutlet weak var toDateTextField: UITextField!

    private let fromDatePicker = UIDatePicker()
    private let toDatePicker = UIDatePicker()
    
    var delegate: CalendarViewDelegate?
    
    
    @IBAction func cancelCalendarAction(_ sender: Any) {
        self.dismissDialog()
        delegate?.goBackOneScreen()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        fromDatePicker.datePickerMode = .date
        toDatePicker.datePickerMode = .date
        fromDateTextField.inputView = fromDatePicker
        toDateTextField.inputView = toDatePicker
    
        fromDatePicker.addTarget(self, action: #selector(handleFromDatePicker(sender:)), for: .valueChanged)
        toDatePicker.addTarget(self, action: #selector(handleToDatePicker(sender:)), for: .valueChanged)
    }
    
    
    /**
        Display date picker
     */
    @objc func handleFromDatePicker(sender: UIDatePicker) {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy/MM/dd"
        fromDateTextField.text = dateFormatter.string(from: sender.date)
    }
    
    /**
        Display date picker
     */
    @objc func handleToDatePicker(sender: UIDatePicker) {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy/MM/dd"
        toDateTextField.text = dateFormatter.string(from: sender.date)
    }

    
    /**
        Request a transaction api
     */
    @IBAction func submitAction(_ sender: Any) {
        if fromDateTextField.text != "" && toDateTextField.text != ""{
            delegate?.getDate(fromDate: fromDateTextField.text!, toDate: toDateTextField.text!)
            self.dismissDialog()
        }else{
            self.popUpMessageError(value: 10, message: "Please select both the dates.")
        }
    }
    
    /**
        Dismiss calendar dialog
     */
    func dismissDialog()
    {
        UIView.animate(withDuration: 0.0, animations: {
            self.view.transform = CGAffineTransform(scaleX: 1.3, y: 1.3)
            self.view.alpha = 0.0;
        }, completion:{(finished : Bool)  in
            if (finished)
            {
                self.view.removeFromSuperview()
            }
        });
        self.removeFromParentViewController()
    }
    
    /**
        Format date as per api requirement
     
     - Parameter date: date value from Date object
     - returns : date value as per in format required by an api
     */
    func dateFormatter(date: Date) -> String{
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy/MM/dd"
        return dateFormatter.string(from: date)
    }
}