//
//  SpecialSaleViewController.swift
//  MTP2_iOS
//
//  Created by 曹晓亮 on 2020/12/16.
//  Copyright © 2020 Muchinfo. All rights reserved.
//

import UIKit
import WHToast
import SDWebImage
import SwiftDate
import SwiftyAttributes
import GTMRefresh

/// 特卖商品视图容器控制类(商城)
class SpecialSaleViewController: 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 = "SpecialGoods_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
        }
    }
    /// 类目
    var category: MoCategory? {
        didSet {
            guard let obj = category else {
                return
            }
            /// 导航栏
            self.navigationItem.title = obj.categoryname
        }
    }
    
    var couponHold: MoMyCouponHold? {
        didSet {
            guard let obj = couponHold else {
                return
            }
            /// 导航栏
            self.navigationItem.title = obj.couponname
        }
    }
    /// 商品id 主要用于检索
    var goodsid: Int? {
        didSet {
            /// 导航栏
            self.navigationItem.title = "特卖商城"
        }
    }
    /// 市场ID
    var marketid: String?

    // 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()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        /// 不为空
        if goodsid != nil || couponHold != nil || category != nil {
            /// 隐藏导航栏
            self.navigationController?.setNavigationBarHidden(false, animated: true)
        }
    }
    
    // MARK: - 数据初始化
    /// 数据初始化
    func initData() {
        if MTP2BusinessCore.shared.getLoginStatus() {
            if let obj = category {
                /// 获取该类目下的商品数据
                requestQueryHsbyMarketGoodses(obj.categoryid, nil, nil)
            } else if let hold = couponHold {
                /// 获取该优惠券下的商品数据
                requestQueryHsbyMarketGoodses(nil, hold.coupontypeid, nil)
            } else if let id = goodsid {
                /// 获取该goodsid下的商品数据
                requestQueryHsbyMarketGoodses(nil, nil, id)
            } else {
                /// 获取所有的商品数据
                requestQueryHsbyMarketGoodses(nil, nil, nil)
            }
        } else {
            if let obj = category {
                /// 获取该类目下的商品数据
                requestQueryHsbyVisitorMarketGoodses(obj.categoryid, nil, nil)
            } else if let hold = couponHold {
                /// 获取该优惠券下的商品数据
                requestQueryHsbyVisitorMarketGoodses(nil, hold.coupontypeid, nil)
            } else if let id = goodsid {
                /// 获取该goodsid下的商品数据
                requestQueryHsbyVisitorMarketGoodses(nil, nil, id)
            } else {
                /// 获取所有的商品数据
                requestQueryHsbyVisitorMarketGoodses(nil, nil, nil)
            }
        }
    }
    
    /// 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.initData()
        }
    }
    
    // MARK: - 接口请求
    /// 查询特卖商品列表（三级商城）
    /// - Parameters:
    ///   - categoryID: 类目ID
    ///   - couponTypeID: 优惠券类别ID
    ///   - goodsid: 商品ID
    fileprivate func requestQueryHsbyMarketGoodses(_ categoryID: Int?,
                                                   _ couponTypeID: Int?,
                                                   _ goodsid: Int?) {
        /// 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.requestQueryHsbyMarketGoodses(marketid ?? "", accountID, categoryID, goodsid?.description, couponTypeID) { (isComplete, error, goodses) in
            DispatchQueue.main.async {
                /// stopAnimating
                self._anim?.stopAnimating()
                /// endRefreshing
                self.collectionView.endRefreshing()
                /// 数据获取成功
                self.goods = goodses ?? []
                /// showError
                if !isComplete {
                    WHToast.showError(withMessage: "数据获取失败，原因：\(error?.retMsg ?? "未知错误")", duration: 1.0, finishHandler: {})
                }
            }
        }
    }
    
    /// 查询游客特卖商品列表（三级商城）
    /// - Parameters:
    ///   - categoryID: 类目ID
    ///   - couponTypeID: 优惠券类别ID
    ///   - goodsid: 商品ID
    fileprivate func requestQueryHsbyVisitorMarketGoodses(_ categoryID: Int?,
                                                          _ couponTypeID: Int?,
                                                          _ goodsid: Int?) {
        /// 异常
        guard let goodsManager = MTP2BusinessCore.shared.goodsManager else {
            return
        }
        /// startAnimating
        self._anim?.startAnimating()
        /// 发送请求
        goodsManager.requestQueryHsbyVisitorMarketGoodses(marketid ?? "", categoryID, goodsid?.description, couponTypeID) { (isComplete, error, goodses) in
            DispatchQueue.main.async {
                /// stopAnimating
                self._anim?.stopAnimating()
                /// endRefreshing
                self.collectionView.endRefreshing()
                /// 数据获取成功
                self.goods = goodses ?? []
                /// showError
                if !isComplete {
                    WHToast.showError(withMessage: "数据获取失败，原因：\(error?.retMsg ?? "未知错误")", duration: 1.0, finishHandler: {})
                }
            }
        }
    }
    
    // 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? SpecialGoodsCell)?.model
        }
    }

}

// MARK: - UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout
extension SpecialSaleViewController: 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! SpecialGoodsCell
        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)+(MTP2BusinessCore.shared.getLoginStatus() ? 100.0 : 75.0))
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {}
}

/// 特卖商城数据Cell
class SpecialGoodsCell: UICollectionViewCell {
    
    /// 背景图片
    @IBOutlet weak var image: UIImageView!
    /// 商品名称
    @IBOutlet weak var goodsName: UILabel!
    /// 价格
    @IBOutlet weak var price: UILabel!
    /// 优惠券
    @IBOutlet weak var score: UILabel!
    /// 店铺名
    @IBOutlet weak var storeName: UILabel!
    
    /// 数据集合
    var model: MoGoodsInfo? {
        didSet {
            /// 更新显示行情数据
            guard let obj = model else { return }
            /// 商品名称
            goodsName.text = obj.goodsname
            /// 抢购价
            price.attributedText = (("\(obj.currencysign) ".withFont(.font_12))+("\(obj.goodsprice.toDownString(reserve: obj.decimalplace))".withFont(.font_16))).withTextColor(.red)
            /// 是否有优惠券
            score.isHidden = !obj.hascoupon
            
            if MTP2BusinessCore.shared.getLoginStatus() {
                /// 发行单位
                storeName.text = obj.customername
            } else {
                /// 未登录不需要显示
                storeName.isHidden = true
            }
            /// 地址异常
            guard let url = StringUtils.getImageUrl(obj.picurls) else { return }
            /// 背景图片
            image.sd_setImage(with: url, placeholderImage: UIImage(named: "placeholder_image"), options: .queryDiskDataSync, context: nil)
        }
    }
}