//
//  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
import TIUIKitCore

open class DefaultHomogeneousItemsCollectionView<CellContentView: UIView & ConfigurableView & AppearanceConfigurable>:
    BaseInitializeableCollectionView,
    UICollectionViewDataSource,
    ConfigurableView,
    AppearanceConfigurable
    where CellContentView.Appearance: WrappedViewAppearance {

    typealias CellType = CellContentView.InCollectionCell

    public private(set) var viewModel: DefaultCollectionViewModel<CellContentView.ViewModelType>?

    private var appearance: Appearance = .defaultAppearance

    // MARK: - BaseInitializeableCollectionView

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

        register(CellType.self, forCellWithReuseIdentifier: String(describing: CellType.self))

        dataSource = self
    }

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

        collectionViewLayout = createLayout()
    }

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

        isScrollEnabled = false
    }

    // MARK: - UICollectionViewDataSource

    open func numberOfSections(in collectionView: UICollectionView) -> Int {
        viewModel?.numberOfSections() ?? .zero
    }

    open func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        viewModel?.numberOfItems(inSection: section) ?? .zero
    }

    open func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: String(describing: CellType.self), for: indexPath)

        guard let viewModel else {
            return cell
        }

        switch cell {
        case let configureableCell as CellType:
            configureableCell.configure(with: viewModel.itemViewModel(at: indexPath))
            configureableCell.configure(appearance: appearance)

        default:
            break
        }

        return cell
    }

    // MARK: - ConfigurableView

    open func configure(with viewModel: DefaultCollectionViewModel<CellContentView.ViewModelType>) {
        self.viewModel = viewModel

        reloadData()
    }

    // MARK: - AppearanceConfigurable

    open func configure(appearance: DefaultWrappedViewHolderAppearance<CellContentView.Appearance, DefaultWrappedLayout>) {
        configureUIView(appearance: appearance)

        self.appearance = appearance
    }

    // MARK: - Subclass override

    open func createLayout() -> UICollectionViewLayout {
        collectionViewLayout
    }
}