//
//  SPEpisodeView.swift
//  ShortPlay
//
//  Created by 曾觉新 on 2025/4/16.
//

import UIKit

class SPEpisodeView: HWPanModalContentView {
    
    var currentIndex: Int = 0 {
        didSet {
            self.collectionView.reloadData()
        }
    }
    
    var shortModel: SPShortModel? {
        didSet {
            coverImageView.sp_setImage(url: shortModel?.image_url)
        }
    }
    
    var dataArr: [SPVideoInfoModel] = [] {
        didSet {
            self.collectionView.reloadData()
        }
    }
    
    var didSelectedIndex: ((_ index: Int) -> Void)?
    
    //MARK: UI属性
    private lazy var collectionViewLayout: UICollectionViewFlowLayout = {
        let itemWidth = floor((kSPScreenWidth - 10 * 4 - 30) / 5)
        
        let layout = UICollectionViewFlowLayout()
        layout.itemSize = .init(width: itemWidth, height: 50)
        layout.minimumLineSpacing = 10
        layout.minimumInteritemSpacing = 10
        layout.sectionInset = .init(top: 0, left: 15, bottom: 0, right: 15)
        return layout
    }()
    
    private lazy var collectionView: SPCollectionView = {
        let collectionView = SPCollectionView(frame: .zero, collectionViewLayout: collectionViewLayout)
        collectionView.delegate = self
        collectionView.dataSource = self
        SPEpisodeCell.registerCell(collectionView: collectionView)
        return collectionView
    }()
    
    private lazy var indicatorView: UIView = {
        let view = UIView()
        view.backgroundColor = .colorFFFFFF()
        view.layer.cornerRadius = 2
        view.layer.masksToBounds = true
        return view
    }()
    
    private lazy var coverImageView: SPImageView = {
        let imageView = SPImageView()
        imageView.layer.cornerRadius = 6
        imageView.layer.masksToBounds = true
        return imageView
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        _setupUI()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    
    //MARK: HWPanModalPresentable
    override func panScrollable() -> UIScrollView? {
        return collectionView
    }
    
    override func longFormHeight() -> PanModalHeight {
        return PanModalHeightMake(.content, kSPScreenHeight * (2 / 3))
    }
    
    override func showDragIndicator() -> Bool {
        return false
    }
    
    override func backgroundConfig() -> HWBackgroundConfig {
        let config = HWBackgroundConfig()
        config.backgroundAlpha = 0.4
        return config
    }
    
    override func present(in view: UIView?) {
        super.present(in: view)
        self.hw_contentView.addEffectView(style: .dark)
    }
    
    
    
}

extension SPEpisodeView {
    
    private func _setupUI() {
        addSubview(indicatorView)
        addSubview(coverImageView)
        addSubview(self.collectionView)
        
        self.indicatorView.snp.makeConstraints { make in
            make.centerX.equalToSuperview()
            make.top.equalToSuperview().offset(15)
            make.width.equalTo(30)
            make.height.equalTo(4)
        }
        
        self.coverImageView.snp.makeConstraints { make in
            make.left.equalToSuperview().offset(15)
            make.top.equalToSuperview().offset(39)
            make.width.equalTo(55)
            make.height.equalTo(74)
        }
        
        self.collectionView.snp.makeConstraints { make in
            make.edges.equalToSuperview()
        }
    }
    
}

//MARK: --------------  UICollectionViewDelegate & UICollectionViewDataSource  --------------
extension SPEpisodeView: UICollectionViewDelegate, UICollectionViewDataSource {
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = SPEpisodeCell.dequeueReusableCell(collectionView: collectionView, indexPath: indexPath)
        cell.videoInfoModel = self.dataArr[indexPath.row]
        cell.sp_isSelected = indexPath.row == currentIndex
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.dataArr.count
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        guard indexPath.row != currentIndex else { return }
        self.didSelectedIndex?(indexPath.row)
        self.dismiss(animated: true) {
            
        }
    }
}