//
//  SettingDateTableViewCell.swift
//  Earthquake Network
//
//  Created by Busi Andrea on 28/08/2020.
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

import Foundation


class SettingDateTableViewCell: UITableViewCell {

    @objc static let Identifier = "DateCell"
    
    @objc var isDisabled: Bool = false {
        didSet {
            updateUI()
        }
    }
    
    @objc var isPickerVisible: Bool = false {
        didSet {
            if oldValue != isPickerVisible {
                updateUI()
            }
        }
    }
    @objc private(set) var date = Date()
    @objc var valueChanged: ((Date) -> Void)?
    
    // MARK: - Properties
    
    @objc lazy var titleLabel: UILabel = {
        let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.numberOfLines = 0
        label.font = UIFont.preferredFont(forTextStyle: .body)
        label.textColor = AppTheme.shared.textColor
        return label
    }()
    
    @objc lazy var valuesLabel: UILabel = {
        let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.numberOfLines = 0
        label.font = UIFont.preferredFont(forTextStyle: .subheadline)
        label.textColor = AppTheme.shared.valueColor
        return label
    }()
    
    @objc lazy var datePicker: UIDatePicker = {
        let picker = UIDatePicker()
        picker.translatesAutoresizingMaskIntoConstraints = false
        picker.datePickerMode = .time
        picker.date = self.date
        picker.addTarget(self, action: #selector(datePickerChanged(_:)), for: .valueChanged)
        return picker
    }()
    
    @objc lazy var stackView: UIStackView = {
        let stackView = UIStackView()
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.axis = .vertical
        stackView.distribution = .equalSpacing
        stackView.spacing = 8
        return stackView
    }()
    
    // MARK: - Init
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupUI()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setupUI()
    }
    
    // MARK: - Public
    
    @objc public func updateDate(_ date: Date) {
        self.date = date
        datePicker.setDate(date, animated: true)
    }
    
    // MARK: - Private
    
    private func setupUI() {
        stackView.addArrangedSubview(titleLabel)
        stackView.addArrangedSubview(valuesLabel)
        
        contentView.addSubview(stackView)
        
        stackView.topAnchor.constraint(equalTo: contentView.layoutMarginsGuide.topAnchor).isActive = true
        stackView.trailingAnchor.constraint(equalTo: contentView.layoutMarginsGuide.trailingAnchor).isActive = true
        stackView.leadingAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leadingAnchor).isActive = true
        stackView.bottomAnchor.constraint(equalTo: contentView.layoutMarginsGuide.bottomAnchor).isActive = true
    }
        
    private func updateUI() {
        let theme = AppTheme.shared
        titleLabel.textColor = isDisabled ? theme.textDisabledColor : theme.textColor
        valuesLabel.textColor = isDisabled ? theme.textDisabledColor : theme.textColor
        
        if isPickerVisible && !stackView.arrangedSubviews.contains(datePicker) {
            stackView.addArrangedSubview(datePicker)
        } else if !isPickerVisible && stackView.arrangedSubviews.contains(datePicker) {
            stackView.removeArrangedSubview(datePicker)
        }
    }
    
    // MARK: - Actions
    
    @objc func datePickerChanged(_ sender: UIDatePicker) {
        date = sender.date
        valueChanged?(sender.date)
    }
}