platform-ios/RainbowPlanet/RainbowPlanet/Modules/OrderModule/OrderApplyRefund/View/OrderApplyRefundPhotoCell.swift

//
//  OrderApplyRefundPhotoCell.swift
//  RainbowPlanet
//
//  Created by Christopher on 2019/5/17.
//  Copyright © 2019 RainbowPlanet. All rights reserved.
//

import UIKit

class OrderApplyRefundPhotoCell: UITableViewCell {
    
    private let maxImageCount: Int = 3
    
    typealias ChoosePicBlock = () -> Void
    var choosePicBlock : ChoosePicBlock?
    
    typealias DelPicTransBlock = (_ idxRow:Int?) -> Void
    var delPicTransBlock : DelPicTransBlock?
    
    var imgCount: Int = 0
    var goodsImageArr: Array<UIImage>? {
        didSet {
            imgCount = self.goodsImageArr?.count ?? 0
        }
    }
    
    class func cellWith(tableView:UITableView,indexPath:IndexPath) -> OrderApplyRefundPhotoCell {
        let ID = "OrderApplyRefundPhotoCell"
        tableView.register(OrderApplyRefundPhotoCell.self, forCellReuseIdentifier: ID)
        let cell : OrderApplyRefundPhotoCell = tableView.dequeueReusableCell(withIdentifier: ID, for: indexPath) as! OrderApplyRefundPhotoCell
        cell.indexPath = indexPath
        return cell
    }
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupViews()
        setupLayouts()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    var indexPath: IndexPath? {
        didSet {
            
        }
    }
    
    //MRAK: - 设置View
    private func setupViews() {
        self.selectionStyle = .none
        
        addSubview(titleLabel)
        addSubview(collectionView)
        addSubview(rmdBackView)
        rmdBackView.addSubview(remindLabel)
    }
    
    private func setupLayouts() {
        titleLabel.snp.makeConstraints { (make) in
            make.left.top.equalTo(14)
            make.height.equalTo(20)
        }
        collectionView.snp.makeConstraints { (make) in
            make.top.equalTo(titleLabel.snp_bottom)
            make.left.right.equalToSuperview()
            make.height.equalTo(200)
            make.bottom.equalToSuperview().offset(-69)
        }
        rmdBackView.snp.makeConstraints { (make) in
            make.top.equalTo(collectionView.snp_bottom)
            make.left.right.equalToSuperview()
            make.height.equalTo(69)
        }
        remindLabel.snp.makeConstraints { (make) in
            make.top.equalTo(20)
            make.centerX.equalToSuperview()
            make.height.equalTo(20)
        }
    }
    
    private lazy var titleLabel: UILabel = {
        let titleLabel = UILabel()
        titleLabel.text = "拍照上传问题"
        titleLabel.textColor = k333333Color
        titleLabel.font = kBoldFont14
        titleLabel.textAlignment = .left
        return titleLabel
    }()
    
    private lazy var rmdBackView: UIView = {
        let rmdBackView = UIView()
        rmdBackView.backgroundColor = kf7f8faColor
        return rmdBackView
    }()
    
    private lazy var remindLabel: UILabel = {
        let remindLabel = UILabel()
        remindLabel.text = "退款将根据支付方式原路返回"
        remindLabel.textColor = k333333Color
        remindLabel.font = kBoldFont13
        return remindLabel
    }()
    
    private lazy var collectionView: UICollectionView = {
        let collectionView = UICollectionView.init(frame: CGRect.zero, collectionViewLayout: collectionViewLayout)
        collectionView.backgroundColor = kffffffColor
        collectionView.delegate = self;
        collectionView.dataSource = self;
        collectionView.showsVerticalScrollIndicator = false
        collectionView.showsHorizontalScrollIndicator = false
        return collectionView
    }()
    
    private lazy var collectionViewLayout: UICollectionViewFlowLayout = {
        let collectionViewLayout = UICollectionViewFlowLayout.init()
        collectionViewLayout.minimumLineSpacing = 10
        collectionViewLayout.minimumInteritemSpacing = 0
        return collectionViewLayout
    }()
    
    //加载数据
    func reloadData() {
        //collectionView重新加载数据
        self.collectionView.reloadData()
        //更新collectionView的高度约束
        let contentSize = self.collectionView.collectionViewLayout.collectionViewContentSize
        collectionView.snp.remakeConstraints { (make) in
            make.top.equalTo(titleLabel.snp_bottom)
            make.left.right.equalToSuperview()
            make.height.equalTo(contentSize.height)
            make.bottom.equalToSuperview().offset(-69)
        }
        self.collectionView.collectionViewLayout.invalidateLayout()
    }
}

extension OrderApplyRefundPhotoCell: UICollectionViewDelegateFlowLayout,UICollectionViewDataSource,UICollectionViewDelegate {
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        return 1
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        if imgCount < maxImageCount {
            return imgCount+1
        } else {
            return maxImageCount
        }
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if imgCount < maxImageCount && indexPath.row == imgCount {
            // 添加图片
            let cell = OrderCommentDefaultCollectionCell.cellWith(collectionView: collectionView, indexPath: indexPath)
            if imgCount == 0 {
                cell.noteStr = "上传凭证"
            } else {
                cell.noteStr = "\(imgCount)/\(maxImageCount)"
            }
            return cell
        } else {
            // 展示图片
            let pCell = OrderCommentAddImgCollectionCell.cellWith(collectionView: collectionView, indexPath: indexPath)
            if indexPath.row < imgCount {
                pCell.showImage = self.goodsImageArr![indexPath.row]
            }
            pCell.delPicBlock = {
                [weak self] (idxRow) in
                if let delPicTransBlock = self?.delPicTransBlock {
                    delPicTransBlock(idxRow)
                }
            }
            return pCell
        }
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width:(kScreenWidth-30-5*3)/4, height: (kScreenWidth-30-5*3)/4)
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsets(top: 10, left: 15, bottom: 20, right: 15)
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        if imgCount < maxImageCount && indexPath.row == imgCount {
            // 添加图片            
            if let choosePicBlock = self.choosePicBlock {
                choosePicBlock()
            }
        }
    }
    
}