LONDON-IOS/GMERemittance/Module/TransactionHistory/User Interface/View/DatePickerViewController.swift

//
//  DatePickerViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 01/10/2018.
//  Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

class DatePickerViewController: UIViewController {
    @IBOutlet weak var fromTextfield: UITextField!
    @IBOutlet weak var toTextfield: UITextField!
    @IBOutlet weak var fromTitleLabel: UILabel!
    @IBOutlet weak var toTitleLabel: UILabel!
    
    @IBOutlet weak var cancelButton: UIButton!
    @IBOutlet weak var searchButton: UIButton!
    
    struct StringConstants {
        let fromPlaceholderText = "placeholder_from_text".localized()
        let toPlaceholderText = "placeholder_to_text".localized()
        let cancelButtonText = "cancel_text".localized()
        let searchButtonText = "search_text".localized()
    }

    var completion: ((_ from: String?, _ to: String?) -> ())?
    
    var fromDate: String?
    var toDate: String?
    
    var _fromDate: Date? {
        didSet {
            self.toDatePicker.minimumDate = _fromDate
            self.toDatePicker.maximumDate = Date()
        }
    }
    var _toDate: Date?
    
    let fromDatePicker = UIDatePicker()
    let toDatePicker = UIDatePicker()
    
    override func viewDidLoad() {
        super.viewDidLoad()

        setup()
    }

    
    // IBActions
    @IBAction func cancel(_ sender: Any) {
        self.view.endEditing(true)
        self.dismiss(animated: true, completion: nil)
    }
    
    @IBAction func searcg(_ sender: UIButton) {
        self.view.endEditing(true)
        self.dismiss(animated: true, completion: {
            self.completion?(self.fromDate, self.toDate)
        })
    }
    
    
    
    // private functions
    private func setup() {
        self.setupToDatePicker()
        self.setupFromDatePicker()
        self.fromDatePicker.date = Date()
        self.handleFromDatePicker(sender: fromDatePicker)
        configureLanguage()
        // Do any additional setup after loading the view.
    }
    
    func configureLanguage() {
        self.fromTitleLabel.text = StringConstants().fromPlaceholderText
        self.toTitleLabel.text = StringConstants().toPlaceholderText
        self.fromTextfield.text = StringConstants().fromPlaceholderText
        self.toTextfield.text = StringConstants().toPlaceholderText
        self.cancelButton.setTitle(StringConstants().cancelButtonText, for: UIControlState.normal)
        self.searchButton.setTitle(StringConstants().searchButtonText, for: UIControlState.normal)
    }
    
    private func setupFromDatePicker() {
        self.fromDatePicker.datePickerMode = .date
        self.fromTextfield.inputView = fromDatePicker
        fromDatePicker.maximumDate = Date()
        self.fromDatePicker.addTarget(self, action: #selector(handleFromDatePicker(sender:)), for: .valueChanged)
    }
    
    @objc private func handleFromDatePicker(sender: UIDatePicker) {
        self._fromDate = sender.date
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = AppConstants.dateFormat
        let date = dateFormatter.string(from: sender.date)
        self.fromTextfield.text = date
        self.fromDate = date
    }
    
    private func setupToDatePicker() {
        self.toDatePicker.datePickerMode = .date
        self.toTextfield.inputView = toDatePicker
        toDatePicker.maximumDate = self._fromDate
        self.toDatePicker.addTarget(self, action: #selector(handleToDatePicker(sender:)), for: .valueChanged)
    }
    
    @objc private func handleToDatePicker(sender: UIDatePicker) {
        self._toDate = sender.date
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = AppConstants.dateFormat
        let date =  dateFormatter.string(from: sender.date)
        self.toTextfield.text = date
        self.toDate = date
    }
}