textLabel?.font = .preferredFont(forTextStyle: .body, weight: .medium)

import SPDiffable

open class NativeEmptyRowItem: SPDiffableTableRow {

var verticalMargins: NativeEmptyTableViewCell.Margins

public init(id: String, verticalMargins: NativeEmptyTableViewCell.Margins, text: String, detail: String?) {

self.verticalMargins = verticalMargins

super.init(id: id, text: text, detail: detail)

// The MIT License (MIT)

// Copyright © 2021 Ivan Vorobei (hello@ivanvorobei.by)

//

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to deal

// in the Software without restriction, including without limitation the rights

// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

// copies of the Software, and to permit persons to whom the Software is

// furnished to do so, subject to the following conditions:

//

// The above copyright notice and this permission notice shall be included in all

// copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

// SOFTWARE.

import UIKit

import SparrowKit

open class NativeEmptyTableViewCell: SPTableViewCell {

// MARK: - Data

open var verticalMargins: Margins = .medium {

didSet {

contentView.layoutMargins.top = self.verticalMargins.value

contentView.layoutMargins.bottom = self.verticalMargins.value

}

}

// MARK: - Views

public let placeholderView = NativePlaceholderView().do {

$0.isUserInteractionEnabled = false

}

// MARK: - Init

open override func commonInit() {

super.commonInit()

selectionStyle = .none

contentView.addSubview(placeholderView)

updateBackgroundColorByParent()

}

// MARK: - Lifecycle

open override func tintColorDidChange() {

super.tintColorDidChange()

updateBackgroundColorByParent()

}

// MARK: - Layout

open override func layoutSubviews() {

super.layoutSubviews()

placeholderView.frame.origin.y = contentView.layoutMargins.top

placeholderView.setWidthAndFit(width: contentView.layoutWidth)

placeholderView.setXCenter()

}

open override func sizeThatFits(_ size: CGSize) -> CGSize {

let superSize = super.sizeThatFits(size)

layoutSubviews()

let calculatedHeight = placeholderView.frame.maxY + contentView.layoutMargins.bottom

let bottomInset = calculatedHeight * (1 - 0.94)

return .init(width: superSize.width, height: calculatedHeight + bottomInset)

}

// MARK: - Actions

private func updateBackgroundColorByParent() {

if #available(iOS 13.0, *) {

backgroundColor = UIColor.systemDownedGroupedBackground

}

/*if let superView = self.superview?.superview {

let superViewBackgroundColor = superView.backgroundColor ?? .clear

if superViewBackgroundColor == .systemGroupedBackground {

backgroundColor = UIColor.init(

light: superViewBackgroundColor.mixWithColor(.darkGray, amount: 0.09).mixWithColor(.systemBlue, amount: 0.01),

dark: .secondarySystemGroupedBackground.alpha(0.7)

)

} else {

// Here not implemented becouse not using never for now.

backgroundColor = .red

}

}*/

}

// MARK: - Models

public enum Margins {

case small

case medium

case large

var value: CGFloat {

switch self {

case .small: return 16

case .medium: return 32

case .large: return 48

}

}

}

public static var empty: SPDiffableTableCellProvider {

guard let item = item as? NativeEmptyRowItem else { return nil }

let cell = tableView.dequeueReusableCell(withClass: NativeEmptyTableViewCell.self, for: indexPath)

cell.placeholderView.headerLabel.text = item.text

cell.placeholderView.descriptionLabel.text = item.detail

cell.verticalMargins = item.verticalMargins