//
//  MyFavoriteViewController.swift
//  MTP2_iOS
//
//  Created by Handy_Cao on 2020/10/29.
//  Copyright © 2020 Muchinfo. All rights reserved.
//

import UIKit
import WHToast
import SwiftyAttributes
import GTMRefresh

/// 我的收藏夹视图容器控制类
class MyFavoriteViewController: BaseViewController {

    // MARK: - 属性列表
    /// 商品数据集合视图
    @IBOutlet weak var collectionView: UICollectionView! {
        didSet {
            if collectionView.responds(to: #selector(setter: UICollectionView.isPrefetchingEnabled)) {
                collectionView.isPrefetchingEnabled = false
            }
            /// 设置约束
            collectionView.setCollectionViewLayout(flowLayout, animated: true)
        }
    }
    /// 数据显示集合视图约束
    lazy var flowLayout: UICollectionViewFlowLayout = {
        /// 最小行间距，默认是0
        $0.minimumLineSpacing = 0
        /// 最小左右间距，默认是10
        $0.minimumInteritemSpacing = 0
        /// 区域内间距，默认是 UIEdgeInsetsMake(0, 0, 0, 0)
        $0.sectionInset = UIEdgeInsets(top: 0.0, left: 0, bottom: 0, right: 0)
        /// 水平滚动
        $0.scrollDirection = .vertical
        return $0
    } (UICollectionViewFlowLayout())
    
    /// GoodsCellIdentifier
    let GoodsCellIdentifier = "Goods_Cell"
    /// 商品数据信息
    var goods: [MoGoodsInfo] = [] {
        didSet {
            /// 刷新数据
            collectionView.reloadData()
            /// 是否隐藏按钮
            self.noDataButton.isHidden = goods.count != 0
            if goods.count > 0 {
                /// 等待UI操作完成，也就是tableView刷新完之后执行
                DispatchQueue.main.async { [weak self] in
                    if self?.visibleGoodsCodes.count != 0 { self?.shouldSubscriptGoodsCodes = self?.visibleGoodsCodes }
                }
            }
        }
    }

    // MARK: - 生命周期
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        /// UI界面初始化
        buildView()
        /// 数据初始化
        initData()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        /// 隐藏导航栏
        self.navigationController?.setNavigationBarHidden(false, animated: true)
        // 侦听行情推送广播
        MTP2BusinessCore.shared.broadcastManager?.addBroadcastListener(owner: self, action: .ReceiveTradeQuote) { [weak self] in
            guard let quoteGoodsInfos = $0.object as? [(goodsHqCode: String, exchHqCode: String)],
                let goodsManager = MTP2BusinessCore.shared.goodsManager,
                let weakSelf = self else { return }
            
            /// 有数据
            if quoteGoodsInfos.count != 0 {
                /// 待刷新行
                var refreshIndexPaths = [IndexPath]()
                
                DispatchQueue.main.async {
                    for (index, cell) in weakSelf.collectionView.visibleCells.enumerated() {
                        if quoteGoodsInfos.first(where: { $0.goodsHqCode == (cell as? GoodsCell)?.model?.goodscode }) != nil {
                            let indexPath = IndexPath(row: index, section: 0)
                            if refreshIndexPaths.firstIndex(of: indexPath) == nil {
                                /// 更新显示行情数据
                                guard let moGoodsInfo = goodsManager.goodsInfos.first(where: { $0.goodscode == (cell as? GoodsCell)?.model?.goodscode }) else { continue }
                                if (cell as? GoodsCell)?.model?.moQuoteInfo?.last != moGoodsInfo.moQuoteInfo?.last {
                                    (cell as? GoodsCell)?.price.attributedText = (moGoodsInfo.currencysign+" \(moGoodsInfo.moQuoteInfo?.last.toDownString(reserve: moGoodsInfo.decimalplace) ?? "0.0")").withTextColor(.red).withFont(.font_22)
                                    /// 记录待刷新行
                                    /// 判断是否在可见区域
                                    if weakSelf.collectionView.indexPathsForVisibleItems.firstIndex(of: indexPath) != nil {
                                        refreshIndexPaths.append(indexPath)
                                    }
                                }
                            }
                        }
                    }
                }
                /// 刷新行情列表
                if refreshIndexPaths.count > 0 {
                    DispatchQueue.main.async {
                        weakSelf.collectionView.reloadItems(at: refreshIndexPaths)
                    }
                }
            }
        }
    }
    
    deinit {
        /// 清除广播侦听
        MTP2BusinessCore.shared.broadcastManager?.removeBroadcastListener(owner: self, forName: .ReceiveTradeQuote)
    }
    
    // MARK: - 数据初始化
    /// 数据初始化
    fileprivate func initData() {
        /// 获取用户收藏商品数据信息
        requestQueryUserFavoriteGoodses()
    }
    
    /// UI界面初始化
    fileprivate func buildView() {
        /// loding......
        addLoadingView()
        /// 添加下拉刷新控件
        self.collectionView.gtm_addRefreshHeaderView(refreshHeader: DefaultGTMRefreshHeader()) {
            /// 重置请求条件
            self.requestQueryUserFavoriteGoodses()
        }
    }
    
    // MARK: - 接口请求
    /// 获取用户收藏商品数据信息
    fileprivate func requestQueryUserFavoriteGoodses() {
        /// 异常
        guard let goodsManager = MTP2BusinessCore.shared.goodsManager,
              let accountid = MTP2BusinessCore.shared.accountManager?.getCurrentTAAccountInfo()?.accountId else {
            return
        }
        /// startAnimating
        self._anim?.startAnimating()
        /// 发送请求
        goodsManager.requestQueryUserFavoriteGoodses { (isComplete, error, goodsid) in
            DispatchQueue.main.async {
                /// stopAnimating
                self._anim?.stopAnimating()
                /// endRefreshing
                self.collectionView.endRefreshing(isSuccess: true)
                
                if isComplete {
                    var showGoods: [MoGoodsInfo] = [], shopGoodsIds: [String] = []
                    for obj in (goodsid ?? []) {
                        if let good = MTP2BusinessCore.shared.goodsManager?.goodsInfos.first(where: {$0.goodsid == obj}),
                           good.trademode != .TRADEMODE_TRADEMODE_HSBY_SHOP { /// 商城单独处理
                            showGoods.append(good)
                        } else { /// 商城goods单独拉出来鞭尸
                            shopGoodsIds.append("\(obj)")
                        }
                    }
                    
                    var ids = ""
                    for (index, id) in shopGoodsIds.enumerated() {
                        ids += index != shopGoodsIds.count-1 ? "\(id)," : "\(id)"
                    }
                    /// 简直是狗屎设计啊
                    goodsManager.requestQueryHsbyMarketGoodses(goodsManager.getMarketIDs(.TRADEMODE_TRADEMODE_HSBY_SHOP), accountid, nil, ids, nil) { (isSuccess, error, infos) in
                        DispatchQueue.main.async {
                            /// 数据获取成功
                            showGoods.append(contentsOf: infos?.sorted(by: { (obj1, obj2) -> Bool in
                                return (obj1.orderqty-obj1.tradeqty-obj1.cancelqty)>(obj2.orderqty-obj2.tradeqty-obj2.cancelqty)
                            }) ?? [])
                            /// 展示商品
                            self.goods = showGoods
                        }
                    }
                } else {
                    self.goods = []
                    /// toast
                    WHToast.showError(withMessage: "数据获取失败，原因：\(error?.retMsg ?? "未知错误")", duration: 1.0, finishHandler: {})
                }
            }
        }
    }
    
    // MARK: - 订阅行情相关
    var uuid: String = UUID().uuidString
    var shouldSubscriptGoodsCodes: Set<String>? {
        didSet {
            guard let quoteSubscriptManager = MTP2BusinessCore.shared.quoteSubscriptManager else { return }
            quoteSubscriptManager.updateQuoteSubcriptGoods(uuid: uuid, goodsCode: shouldSubscriptGoodsCodes ?? [])
        }
    }
    
    var visibleGoodsCodes: Set<String> {
        var goodsCodes = Set<String>()
        self.collectionView.visibleCells.forEach { (cell) in
            if let quoteCell = cell as? GoodsCell,
               let goodsCode = quoteCell.model?.goodscode {
                goodsCodes.insert(goodsCode)
            }
        }
        return goodsCodes
    }
    
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
        if segue.identifier == "ShowGoodsDetail" {
            /// 商品详情
            (segue.destination as? GoodsDetailViewController)?.model = (sender as? GoodsCell)?.model
        }
    }

    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
    }
    */

}

// MARK: - UIScrollViewDelegate
extension MyFavoriteViewController: UIScrollViewDelegate {
    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
        if visibleGoodsCodes.count != 0 { shouldSubscriptGoodsCodes = visibleGoodsCodes }
    }
}

// MARK: - UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout
extension MyFavoriteViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.goods.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: GoodsCellIdentifier, for: indexPath) as! GoodsCell
        cell.model = self.goods[indexPath.item]
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: collectionView.width/2, height: ((collectionView.width/2)*0.9)+80.0)
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        /// 商品详情
        let goodsDetailController = UIStoryboard(name: "Quote", bundle: nil).instantiateViewController(withIdentifier: "GoodsDetail") as! GoodsDetailViewController
        goodsDetailController.model = self.goods[indexPath.row]
        self.navigationController?.pushViewController(goodsDetailController, animated: true)
    }
}