SynthReel/SynthReel/Class/Home/V/SRHomeBannerView.swift

//
//  SRHomeBannerView.swift
//  SynthReel
//
//  Created by 湖北秦九 on 2025/11/15.
//  Copyright © 2025 SR. All rights reserved.
//

import UIKit
import SnapKit
import FSPagerView

class SRHomeBannerView: UIView {

    var dataArr: [SRShortModel]? {
        didSet {
            self.bannerView.reloadData()
            self.miniCollectionView.reloadData()
        }
    }
    
    var didSelectedShort: ((_ model: SRShortModel?) -> Void)?
    
    lazy var bgImageView = UIImageView(image: UIImage(named: "home_banner_bg"))
    
    lazy var bannerView: FSPagerView = {
        let view = FSPagerView()
        view.delegate = self
        view.dataSource = self
        view.isInfinite = true
        view.automaticSlidingInterval = 5
        view.register(SRHomeBannerCell.self, forCellWithReuseIdentifier: "cell")
        return view
    }()
    
//    lazy var miniBgView: UIView = {
//        let view = UIView()
//        view.layer.cornerRadius = 4
//        view.layer.masksToBounds = true
//        view.backgroundColor = ._051_B_22.withAlphaComponent(0.5)
//        return view
//    }()
    
    lazy var miniCollectionViewLayout: UICollectionViewFlowLayout = {
        let layout = UICollectionViewFlowLayout()
        layout.itemSize = .init(width: 36, height: 46)
        layout.minimumLineSpacing = 4
        return layout
    }()
    
    lazy var miniCollectionView: SRCollectionView = {
        let collectionView = SRCollectionView(frame: .zero, collectionViewLayout: miniCollectionViewLayout)
        collectionView.layer.cornerRadius = 4
        collectionView.layer.masksToBounds = true
        collectionView.backgroundColor = ._051_B_22.withAlphaComponent(0.5)
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.showsVerticalScrollIndicator = false
        collectionView.contentInset = .init(top: 5, left: 0, bottom: 5, right: 0)
        collectionView.register(SRHomeBannerMiniCell.self, forCellWithReuseIdentifier: "cell")
        return collectionView
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        sr_setupUI()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        applyHeteromorphicLayer()
    }
    
    ///添加异形切边
    func applyHeteromorphicLayer() {
        let viewSize = bannerView.bounds.size
        let path = UIBezierPath()
        let layer = CAShapeLayer()
        
        //右上角边长
        let topRight = UIScreen.getRatioWidth(size: 25)
        //左下角边长
        let bottomLeft = UIScreen.getRatioWidth(size: 10)
        
        path.move(to: .init(x: 0, y: 0))
        path.addLine(to: .init(x: viewSize.width - topRight, y: 0))
        path.addLine(to: .init(x: viewSize.width, y: topRight))
        path.addLine(to: .init(x: viewSize.width, y: viewSize.height))
        path.addLine(to: .init(x: bottomLeft, y: viewSize.height))
        path.addLine(to: .init(x: 0, y: viewSize.height - bottomLeft))
        path.close()
        
        layer.path = path.cgPath
        bannerView.layer.mask = layer
    }
    
}

extension SRHomeBannerView {
    
func sr_setupUI() {
        let bgImage = self.bgImageView.image!
        let bgWidth = UIScreen.width - 30
        let bgHeight = bgImage.size.height / bgImage.size.width * bgWidth
        
        addSubview(bgImageView)
        addSubview(bannerView)
        addSubview(miniCollectionView)
        
        bgImageView.snp.makeConstraints { make in
            make.left.equalToSuperview().offset(15)
            make.right.equalToSuperview().offset(-15)
            make.top.equalToSuperview()
            make.bottom.equalToSuperview()
            make.height.equalTo(bgHeight)
        }
        
        bannerView.snp.makeConstraints { make in
            make.left.equalTo(bgImageView).offset(11)
            make.right.equalTo(bgImageView).offset(-11)
            make.top.equalTo(bgImageView).offset(18)
            make.bottom.equalTo(bgImageView).offset(-12)
        }
        
        miniCollectionView.snp.makeConstraints { make in
            make.left.equalTo(bannerView).offset(7)
            make.centerY.equalTo(bannerView)
            make.top.equalTo(bannerView).offset(7)
            make.width.equalTo(46)
        }
    }
}

//MARK: FSPagerViewDelegate FSPagerViewDataSource
extension SRHomeBannerView: FSPagerViewDelegate, FSPagerViewDataSource {
    func numberOfItems(in pagerView: FSPagerView) -> Int {
        return self.dataArr?.count ?? 0
    }
    
    func pagerView(_ pagerView: FSPagerView, cellForItemAt index: Int) -> FSPagerViewCell {
        let cell = pagerView.dequeueReusableCell(withReuseIdentifier: "cell", at: index) as! SRHomeBannerCell
        cell.model = self.dataArr?[index]
        return cell
    }
    
    
    func pagerView(_ pagerView: FSPagerView, didSelectItemAt index: Int) {
        self.didSelectedShort?(self.dataArr?[index])
    }
    
    
}

//MARK: UICollectionViewDelegate UICollectionViewDataSource
extension SRHomeBannerView: UICollectionViewDelegate, UICollectionViewDataSource {
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! SRHomeBannerMiniCell
        cell.model = self.dataArr?[indexPath.row]
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.dataArr?.count ?? 0
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        if indexPath.row == self.bannerView.currentIndex { return }
        
        self.bannerView.selectItem(at: indexPath.row, animated: true)
    }
    
}