LeadKit/TIUIElements/Sources/Separators/ContainerSeparatorTableViewCell.swift

//
//  Copyright (c) 2023 Touch Instinct
//
//  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

open class ContainerSeparatorTableViewCell<View: UIView>: ContainerTableViewCell<View>, SeparatorsConfigurable {

    private lazy var topSeparatorView = createTopSeparator()
    private lazy var bottomSeparatorView = createBottomSeparator()

    private lazy var topSeparatorConstraints: SubviewConstraints = {
        subviewConstraints(for: topSeparatorView)
    }()

    private lazy var bottomSeparatorConstraints: SubviewConstraints = {
        subviewConstraints(for: bottomSeparatorView)
    }()

    open func createTopSeparator() -> UIView {
        .init()
    }

    open func createBottomSeparator() -> UIView {
        .init()
    }

    open func add(topSeparatorView: UIView) {
        contentView.addSubview(topSeparatorView)
    }

    open func add(bottomSeparatorView: UIView) {
        contentView.addSubview(bottomSeparatorView)
    }

    // MARK: - SeparatorsConfigurable

    public func configureSeparators(with separatorsConfiguration: SeparatorsConfiguration) {
        topSeparatorView.isHidden = separatorsConfiguration.topIsHidden
        bottomSeparatorView.isHidden = separatorsConfiguration.bottomIsHidden

        switch separatorsConfiguration {
        case .none:
            break

        case let .bottom(appearance):
            updateBottomSeparator(with: appearance)

        case let .top(appearance):
            updateTopSeparator(with: appearance)

        case let .full(topAppearance, bottomAppearance):
            updateTopSeparator(with: topAppearance)
            updateBottomSeparator(with: bottomAppearance)
        }
    }

    open override func prepareForReuse() {
        super.prepareForReuse()

        configureSeparators(with: .none)
    }

    // MARK: - InitializableView

    open override func addViews() {
        super.addViews()

        add(topSeparatorView: topSeparatorView)
        add(bottomSeparatorView: bottomSeparatorView)
    }

    open override func configureLayout() {
        super.configureLayout()

        for view in [topSeparatorView, bottomSeparatorView] {
            view.translatesAutoresizingMaskIntoConstraints = false
        }
    }

    open override func configureAppearance() {
        super.configureAppearance()

        for view in [topSeparatorView, bottomSeparatorView] {
            view.isHidden = true
            view.backgroundColor = .black
        }
    }

    // MARK: - Private

    private func updateTopSeparator(with appearance: SeparatorAppearance) {
        topSeparatorView.configureUIView(appearance: appearance)

        topSeparatorConstraints.update(from: appearance.layout)
    }

    private func updateBottomSeparator(with appearance: SeparatorAppearance) {
        bottomSeparatorView.configureUIView(appearance: appearance)

        bottomSeparatorConstraints.update(from: appearance.layout)
    }

    private func subviewConstraints(for seperatorView: UIView) -> SubviewConstraints {
        let leadingConstraint = seperatorView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor)
        let trailingConstraint = seperatorView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor)
        let topConstraint = seperatorView.topAnchor.constraint(equalTo: contentView.topAnchor)
        let bottomConstraint = seperatorView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor)

        let edgeConstraints = EdgeConstraints(leadingConstraint: leadingConstraint,
                                              trailingConstraint: trailingConstraint,
                                              topConstraint: topConstraint,
                                              bottomConstraint: bottomConstraint)

        let centerXConstraint = seperatorView.centerXAnchor.constraint(equalTo: contentView.centerXAnchor)
        let centerYConstraint = seperatorView.centerYAnchor.constraint(equalTo: contentView.centerYAnchor)

        let centerConstraints = CenterConstraints(centerXConstraint: centerXConstraint,
                                                  centerYConstraint: centerYConstraint)

        let sizeConstraints = SizeConstraints(widthConstraint: seperatorView.widthAnchor.constraint(equalToConstant: .zero),
                                              heightConstraint: seperatorView.heightAnchor.constraint(equalToConstant: .zero))

        return SubviewConstraints(edgeConstraints: edgeConstraints,
                                  centerConstraints: centerConstraints,
                                  sizeConstraints: sizeConstraints)
    }
}