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

import UIKit
import JXSegmentedView
import WHToast
import DeviceKit

/// 优惠券选择视图容器控制类
class ChooseCouponViewController: BaseViewController {

    // MARK: - 属性列表
    /// 分段控制器
    @IBOutlet weak var segmentedView: JXSegmentedView! {
        didSet {
            segmentedView.delegate = self
            segmentedView.dataSource = dataSource
            segmentedView.indicators = [self.indicator]
        }
    }
    /// segmentedDataSource
    let dataSource: JXSegmentedTitleDataSource = {
        var items: [String] = ["可用优惠券", "不可用优惠券"]
        $0.titles = items
        $0.titleNormalColor = UIColorFromHex(rgbValue: 0x333333)
        $0.titleNormalFont = .font_14
        $0.titleSelectedColor = UIColorFromHex(rgbValue: 0x60a1e3)
        $0.titleSelectedFont = .font_14
        $0.isTitleColorGradientEnabled = true
        return $0
    } (JXSegmentedTitleDataSource())
    /// 列表
    @IBOutlet weak var tableView: UITableView!
    /// 高度约束
    @IBOutlet weak var heightLayoutConstraint: NSLayoutConstraint! {
        didSet {
            heightLayoutConstraint.constant = 0.0
        }
    }
    /// CellIdentifier
    let CellIdentifier = "Coupon_Cell"
    /// 优惠券数据信息
    var coupons: [MoMyCouponHold] = [] {
        didSet {
            /// 刷新列表数据
            tableView.reloadData()
            /// 设备类型
            if Device.current == .iPhone6 || Device.current == .iPhone6s || Device.current == .iPhone7 || Device.current == .iPhone8 {
                /// 高度约束
                heightLayoutConstraint.constant = coupons.count == 0 ? 200.0 : (coupons.count <= 3 ? CGFloat(coupons.count)*130.0 : 400.0)
            } else {
                /// 高度约束
                heightLayoutConstraint.constant = coupons.count == 0 ? 200.0 : (coupons.count <= 4 ? CGFloat(coupons.count)*130.0 : 400.0)
            }
        }
    }
    /// 商品数据
    override var takeInfo: Any? {
        didSet {
            /// 异常
            guard let _ = takeInfo as? MoGoodsInfo else { return }
            /// 查询数据
            reloadData(segmentedView.selectedIndex)
        }
    }
    /// 付款金额
    var amount: Double = 0.0
    /// 优惠券使用回调
    var usedBlock: ((_ coupon: MoMyCouponHold?, _ rowNum: Int?) -> Void)?
    /// 优惠券
    var coupon: MoMyCouponHold?
    
    // 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()
    }
    
    // MARK: - 初始化
    /// UI界面初始化
    fileprivate func buildView() {
        /// loding......
        self.addLoadingView()
    }
    
    // MARK: - 交互相关
    /// onTapGestureRecognizer
    /// - Parameter sender: segmentIndex
    @IBAction fileprivate func onTapGestureRecognizer(_ sender: UITapGestureRecognizer) {
        /// 查询我的优惠券
        self.dismiss(animated: true, completion: {})
    }
    
    // MARK: - 接口请求
    /// 刷新数据
    /// - Parameter segmentIndex: segmentIndex
    fileprivate func reloadData(_ segmentIndex: Int) {
        /// 查询我的优惠券
        segmentIndex == 0 ? requestQueryMyCoupons() : requestQueryMyUnusedCoupons()
    }
    
    /// 查询我的优惠券
    fileprivate func requestQueryMyCoupons() {
        /// 异常
        guard let orderManager = MTP2BusinessCore.shared.orderManager,
              let moGoodsInfo = takeInfo as? MoGoodsInfo else { return }
        
        /// startAnimating
        _anim?.startAnimating()
        /// 查询数据
        orderManager.requestQueryMyCouponHolds(moGoodsInfo.goodsid, amount, moGoodsInfo.sellUserID, nil) { (isComplete, error, objs) in
            DispatchQueue.main.async {
                /// stopAnimating
                self._anim?.stopAnimating()
                /// 查询成功
                if isComplete {
                    self.coupons = objs?.filter({ (obj) -> Bool in
                        return obj.holdstatus == .executed
                    }) ?? []
                } else {
                    self.coupons = []
                    /// showError
                    WHToast.showError(withMessage: "查询失败，请稍候再试!", duration: 1.5, finishHandler: {})
                }
            }
        }
    }
    
    /// 查询我的不可用优惠券
    fileprivate func requestQueryMyUnusedCoupons() {
        /// 异常
        guard let orderManager = MTP2BusinessCore.shared.orderManager,
              let moGoodsInfo = takeInfo as? MoGoodsInfo else { return }
        
        /// startAnimating
        _anim?.startAnimating()
        /// 查询数据
        orderManager.requestQueryMyUnusedCouponHolds(moGoodsInfo.goodsid, amount, moGoodsInfo.sellUserID) { (isComplete, error, objs) in
            DispatchQueue.main.async {
                /// stopAnimating
                self._anim?.stopAnimating()
                /// 查询成功
                if isComplete {
                    self.coupons = objs ?? []
                } else {
                    self.coupons = []
                    /// showError
                    WHToast.showError(withMessage: "查询失败，请稍候再试!", duration: 1.5, finishHandler: {})
                }
            }
        }
    }
}

// MARK: - JXSegmentedViewDelegate
extension ChooseCouponViewController: JXSegmentedViewDelegate {
    
    func segmentedView(_ segmentedView: JXSegmentedView, didSelectedItemAt index: Int) {
        /// 刷新数据
        self.reloadData(index)
    }
}


// MARK: - UITableViewDelegate, UITableViewDataSource
extension ChooseCouponViewController: UITableViewDelegate, UITableViewDataSource {
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return coupons.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: CellIdentifier, for: indexPath) as! CouponCell
        if self.segmentedView.selectedIndex == 0 {
            cell.chooseBlock = { (_ coupon: MoMyCouponHold?, _ rowRum: Int?) in
                DispatchQueue.main.async {
                    self.dismiss(animated: true) {
                        /// 执行回调
                        if let block = self.usedBlock,
                           self.coupons[indexPath.row].unusedresult == "" {
                            block(self.coupons[indexPath.row], rowRum)
                        }
                    }
                }
            }
        }
        cell.rowNum = indexPath.row
        cell.model = coupons[indexPath.row]
        return cell
    }
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 130.0
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        if self.segmentedView.selectedIndex == 0 { /// 可用
            /// 获取选中的优惠券
            let cell = tableView.cellForRow(at: indexPath) as! CouponCell
            cell.choosed = !cell.choosed
            /// 执行回调
            DispatchQueue.main.asyncAfter(deadline: DispatchTime.now()+0.2) {
                if let block = cell.chooseBlock,
                   let obj = cell.model {
                    block(obj, !cell.choosed ? nil : cell.rowNum)
                }
            }
            
            /// 先取消所有的勾选状态
            for (index, obj) in tableView.visibleCells.enumerated() {
                if index != indexPath.row {
                    (obj as! CouponCell).choosed = false
                }
            }
        } else { /// 不可用
            DispatchQueue.main.async {
                self.dismiss(animated: true, completion: nil)
            }
        }
    }
}