AIEmoji/AIEmoji/Business/TSPTPGeneratorVC/TSAIPhotoGeneratorBaseVC/TSAIPhotoBrowseVC.swift

//
//  TSAIPhotoBrowseVC.swift
//  AIEmoji
//
//  Created by 100Years on 2025/4/2.
//

private let cellId = "TSAIPhotoBrowseCell"
class TSAIPhotoBrowseVC: TSBaseVC {

    var dataModelArray = [TSGenmojiModel]()
    var currentImage:UIImage?{
        let cell = collectionView.cellForItem(at: IndexPath(item: currentIndex, section: 0)) as? TSAIPhotoBrowseCell
        var image = cell?.netWorkImageView.image
        image = image?.pngImage
        return image
    }

    var currentModel:TSGenmojiModel?{
        if let model = dataModelArray.safeObj(At: currentIndex){
            return model
        }
        return nil
    }
    
    
    var currentIndex:Int = 0 {
        didSet{
            reloadUI()
        }
    }
    
    lazy var collectionView: UICollectionView = {

        let layout = UICollectionViewFlowLayout()
        layout.scrollDirection = .vertical
        
        let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.showsVerticalScrollIndicator = false
        collectionView.showsHorizontalScrollIndicator = false
        collectionView.backgroundColor = .clear
        if #available(iOS 11.0, *) {
            collectionView.contentInsetAdjustmentBehavior = .never
        }
        collectionView.register(TSAIPhotoBrowseCell.self, forCellWithReuseIdentifier: cellId)
        collectionView.isPagingEnabled = true
        collectionView.isHidden = true
        if let flowLayout = collectionView.collectionViewLayout as? UICollectionViewFlowLayout {
            flowLayout.minimumInteritemSpacing = 0
            flowLayout.minimumLineSpacing = 0
            flowLayout.scrollDirection = .horizontal
            flowLayout.itemSize = CGSize(width: k_ScreenWidth, height: k_ScreenHeight)
        }
        return collectionView
    }()
    
    
//    lazy var leftBtn: UIButton = {
//        let leftBtn = UIButton.createButton(image: UIImage(named: "page_left")){ [weak self]  in
//            guard let self = self else { return }
//            self.collectionView.scrollToItem(at:  IndexPath(item: self.currentIndex-1, section: 0), at: .left, animated: true)
//        }
//        return leftBtn
//    }()
//    
//    lazy var rightBtn: UIButton = {
//        let rightBtn = UIButton.createButton(image: UIImage(named: "page_right")){ [weak self]  in
//            guard let self = self else { return }
//            self.collectionView.scrollToItem(at: IndexPath(item: self.currentIndex+1, section: 0), at: .left, animated: true)
//        }
//        return rightBtn
//    }()
        

    //保存按钮
    lazy var bigSaveBtn: UIButton = {
        let bigSaveBtn = kCreateNormalSubmitBtn(title: "Save".localized) { [weak self]  in
            guard let self = self else { return }
            clickSubmitBtn()
        }
        bigSaveBtn.frame = CGRectMake(0, 0, 252, 44)
        bigSaveBtn.cornerRadius = 22.0
        return bigSaveBtn
    }()
    
    lazy var xBtn: UIButton = {
        let xBtn = UIButton.createButton(image: UIImage(named: "close_gray")) { [weak self]  in
            guard let self = self else { return }
            clickXBtn()
        }
        return xBtn
    }()
    
    override func createView() {
        super.createView()
        
        setNavBarViewHidden(true)
        
        contentView.addSubview(collectionView)
        collectionView.snp.makeConstraints { make in
            make.edges.equalTo(0)
        }
        
//        contentView.addSubview(leftBtn)
//        leftBtn.snp.makeConstraints { make in
//            make.leading.equalTo(17)
//            make.centerY.equalToSuperview()
//            make.width.height.equalTo(40)
//        }
//        
//        contentView.addSubview(rightBtn)
//        rightBtn.snp.makeConstraints { make in
//            make.trailing.equalTo(-18)
//            make.centerY.equalToSuperview()
//            make.width.height.equalTo(40)
//        }
        
        DispatchQueue.main.async {
//        kDelayMainShort {
            self.collectionView.isHidden = false
            self.collectionView.reloadData()
            self.collectionView.setContentOffset(CGPoint(x: CGFloat(self.currentIndex) * self.collectionView.frame.size.width, y: 0), animated: false)

            if let flowLayout = self.collectionView.collectionViewLayout as? UICollectionViewFlowLayout {
                flowLayout.itemSize = self.collectionView.bounds.size
            }
        }
        

        contentView.addSubview(bigSaveBtn)
        bigSaveBtn.snp.makeConstraints { make in
            make.centerX.equalToSuperview()
            make.bottom.equalTo(-8-k_Height_safeAreaInsetsBottom())
            make.width.equalTo(bigSaveBtn.width)
            make.height.equalTo(bigSaveBtn.height)
        }
        
        //关闭按钮
        contentView.addSubview(xBtn)
        xBtn.snp.makeConstraints { make in
            make.top.equalTo(k_Height_StatusBar + 4)
            make.leading.equalTo(16)
            make.width.equalTo(36)
            make.height.equalTo(36)
        }
    }
    
    @objc func clickSubmitBtn(){
        
        if JudgeVip(){
            return
        }
        
        if let image = currentImage{
            PhotoManagerShared.saveImageToAlbum(image) { success, error in
                if success {
                    kSavePhotoSuccesswShared.show(atView: self.view)
                }else{
                    debugPrint(error)
                }
            }
        }else{
            kShowToastDataMissing()
        }
    }
    
    
    func JudgeVip() -> Bool {
        return kJudgeVip(externalBool: currentModel?.response.vip ?? false , vc: self, closePageBlock: nil)
    }
    
    @objc func clickXBtn(){
        pop()
    }
}


extension TSAIPhotoBrowseVC {
    
    func reloadUI() {
//        //判断前后是否还有,以此来确定左右翻页按钮
//        var isHiddenLeft = false
//        var isHiddenRight = false
//        if dataModelArray.count == 1{
//            isHiddenLeft = true
//            isHiddenRight = true
//        }else if currentIndex == 0 {
//            isHiddenLeft = true
//        }else if currentIndex+1 >= dataModelArray.count {
//            isHiddenRight = true
//        }
//        
//        leftBtn.isHidden = isHiddenLeft
//        rightBtn.isHidden = isHiddenRight
    }
}

//MARK: UICollectionViewDataSource
extension TSAIPhotoBrowseVC:UICollectionViewDataSource,UICollectionViewDelegate {
    
    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
        resetIndexWithOffset(scrollView)
    }

    func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView) {
        resetIndexWithOffset(scrollView)
    }

    private func resetIndexWithOffset(_ scrollView: UIScrollView) {
        let item = Int((scrollView.contentOffset.x / scrollView.bounds.width).rounded())
        currentIndex = item
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return dataModelArray.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! TSAIPhotoBrowseCell
        if let model = dataModelArray.safeObj(At: indexPath.item){
            cell.model = model
        }
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, willDisplay cell: UICollectionViewCell, forItemAt indexPath: IndexPath) {
        guard let cell = cell as? TSAIPhotoBrowseCell else { return }
        
        if let model = dataModelArray.safeObj(At: indexPath.item){
            cell.model = model
        }
    }
    
}


class TSAIPhotoBrowseCell : TSBaseCollectionCell{

    lazy var exampleView: UIView = {
        let exampleView = UIView()
        exampleView.backgroundColor = "#232323".uiColor.withAlphaComponent(0.3)
        
        let textLabel = UILabel.createLabel(
            text: "Example".localized,
            font: .font(size: 12),
            textColor: .white
        )
        
        exampleView.addSubview(textLabel)
        textLabel.snp.makeConstraints { make in
            make.top.edges.equalTo(UIEdgeInsets(top: 4, left: 6, bottom: 4, right: 6))
        }
        exampleView.isHidden = true
        exampleView.cornerRadius = 10.0
        return exampleView
    }()
    
    lazy var netWorkImageView : UIImageView = {
        let netWorkImageView = UIImageView.createImageView(imageName: "",contentMode: .scaleAspectFit,corner: 24.0)
        return netWorkImageView
    }()

    lazy var vipImageView: UIImageView = {
        let vipImageView = UIImageView.createImageView(imageName:"vip_side_icon")
        vipImageView.contentMode = .scaleToFill
        vipImageView.isHidden = true
        return vipImageView
    }()

    override func creatUI() {
        let w = k_ScreenWidth
        let h = k_ScreenHeight
        bgContentView.addSubview(netWorkImageView)
        netWorkImageView.snp.makeConstraints { make in
            make.center.equalToSuperview()
            make.width.equalTo(w)
            make.height.equalTo(h)
        }

        netWorkImageView.addSubview(vipImageView)
        vipImageView.snp.makeConstraints { make in
            make.width.height.equalTo(40)
            make.top.equalTo(-5)
            make.trailing.equalTo(5)
        }
        
//        contentView.addSubview(exampleView)
//        exampleView.snp.makeConstraints { make in
//            make.bottom.equalTo(-(44+8+k_Height_safeAreaInsetsBottom()+20))
//            make.centerX.equalToSuperview()
//            make.height.equalTo(20)
//        }
        
    }
    
    var model:TSGenmojiModel = TSGenmojiModel(){
        didSet{
            dePrint("TSAIPhotoBrowseCell didSet model")
            if model.modelType == .example {
//                exampleView.isHidden = false
                netWorkImageView.image = UIImage(named:model.response.resultUrl)
                netWorkImageView.adaptiveScale()
            }else{
//                exampleView.isHidden = true
                netWorkImageView.setAsyncImage(urlString: model.response.resultUrl,placeholder: kPlaceholderImage,contentMode: .scaleAspectFit, completion: { [weak self] image in
                    guard let self = self else { return }
                    netWorkImageView.adaptiveScale()
                })
            }
            
            vipImageView.isHidden = !model.response.vip
            
        }
    }
}