MTP2.0_HNLY_iOS/MTP_iOS/MTP2_iOS/UserInterface/Search/SearchViewController.swift

//
//  SearchViewController.swift
//  MTP2_iOS
//
//  Created by Handy_Cao on 2020/11/12.
//  Copyright © 2020 Muchinfo. All rights reserved.
//

import UIKit

/// 商品检索视图容器控制类
class SearchViewController: BaseViewController {
    
    // MARK: - 属性列表
    /// 数据展示列表
    @IBOutlet weak var tableView: UITableView!
    /// 历史检索视图
    @IBOutlet weak var collectionView: UICollectionView! {
        didSet {
            /// 设置约束
            collectionView.setCollectionViewLayout(flowLayout, animated: true)
        }
    }
    /// 高度约束
    @IBOutlet weak var heightLayoutConstraint: NSLayoutConstraint!
    /// 删除按钮
    @IBOutlet weak var delete: UIButton!
    
    /// 检索视图
    lazy var searchBar: UISearchBar = {
        $0.layer.cornerRadius = 10.0
        if #available(iOS 13.0, *) {
            $0.searchTextField.backgroundColor = UIColorFromHex(rgbValue: 0xf0f0f0)
        } else {
            // Fallback on earlier versions
            $0.barTintColor = UIColorFromHex(rgbValue: 0xf0f0f0)
        }
        $0.delegate = self
        $0.showsCancelButton = false
        $0.tintColor = .white
        $0.placeholder = "请输入商品名称或者代码"
        return $0
    }(UISearchBar())
    
    /// 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 = 10
        /// 最小左右间距，默认是10
        $0.minimumInteritemSpacing = 10
        /// 区域内间距，默认是 UIEdgeInsetsMake(0, 0, 0, 0)
        $0.sectionInset = UIEdgeInsets(top: 5.0, left: 5, bottom: 5, right: 5)
        /// 水平滚动
        $0.scrollDirection = .vertical
        return $0
    } (UICollectionViewFlowLayout())
    
    /// CellIdentifier
    let CellIdentifier: String = "SearchGoods_Cell"
    /// HisCellIdentifier
    let HisCellIdentifier: String = "HisSearchGoods_Cell"
    /// 检索商品信息
    var searchGoods: [MoSearchGoods] = [] {
        didSet {
            /// 刷新列表数据
            tableView.reloadData()
        }
    }
    /// 历史记录
    var hisResults: [String] {
        get {
            UserDefaultsUtils.getResearchGoodsInfo()
        }
    }
    /// 交易模式
    var tradeMode: ETradeMode?
    
    // MARK: - 生命周期
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        /// 检索视图
        self.navigationItem.titleView = self.searchBar
        /// 数据初始化
        self.initData()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        /// 显示导航栏
        self.navigationController?.setNavigationBarHidden(false, animated: true)
    }
    
    // MARK: - 数据初始化
    /// 数据初始化
    fileprivate func initData() {
        /// 刷新数据
        self.collectionView.reloadData()
        /// 设置动态高度约束
        self.heightLayoutConstraint.constant = hisResults.count > 0 ? 90.0 : 0.0
    }
    
    // MARK: - 交互相关
    @IBAction fileprivate func onBarButtonItemPressed(_ sender: UIBarButtonItem) {
        /// 失去第一次响应者
        self.searchBar.resignFirstResponder()
        self.searchBar.text = ""
        /// 赋值历史
        self.collectionView.reloadData()
        /// 设置动态高度约束
        self.heightLayoutConstraint.constant = hisResults.count > 0 ? 90.0 : 0.0
    }
    
    /// onButtonPressed
    /// - Parameter sender: sender
    @IBAction fileprivate func onButtonPressed(_ sender: UIButton) {
        switch sender {
        case delete: /// 删除
            DispatchQueue.main.async {
                UserDefaultsUtils.deleteAllResearchGoodsInfo()
                /// 数据初始化
                self.initData()
            }
        default:
            break
        }
    }
    
    // MARK: - 接口请求
    /// 商品检索数据信息
    /// - Parameter string: 检索内容
    func requestSearchGoods(_ string: String) {
        /// 异常
        guard let goodsManager = MTP2BusinessCore.shared.goodsManager else { return }
        /// 商品检索
        goodsManager.requestSearchGoodses(string, "16,70,71") { (isComplete, error, goods) in
            DispatchQueue.main.async { self.searchGoods = goods ?? [] }
        }
    }

    /*
    // 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: - UITableViewDelegate, UITableViewDataSource
extension SearchViewController: UITableViewDelegate, UITableViewDataSource {
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.searchGoods.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: CellIdentifier, for: indexPath)
        cell.textLabel?.text = self.searchGoods[indexPath.row].goodsname
        cell.detailTextLabel?.text = self.searchGoods[indexPath.row].goodscode
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        /// 添加检索商品信息
        UserDefaultsUtils.setResearchGoodsInfo(searchBar.text ?? "")
        searchBar.resignFirstResponder()
        
        /// 商品详情
        guard let goods = MTP2BusinessCore.shared.goodsManager?.goodsInfos.first(where: {$0.goodsid == self.searchGoods[indexPath.row].goodsid}) else { return }
        /// 商城商品
        if goods.trademode == .TRADEMODE_TRADEMODE_HSBY_SHOP {
            let specialSaleController = viewController(name: "Quote", identifier: "SpecialSale") as! SpecialSaleViewController
            specialSaleController.goodsid = goods.goodsid
            self.navigationController?.pushViewController(specialSaleController, animated: true)
        } else {
            let goodsDetailController = UIStoryboard(name: "Quote", bundle: nil).instantiateViewController(withIdentifier: "GoodsDetail") as! GoodsDetailViewController
            goodsDetailController.model = goods
            self.navigationController?.pushViewController(goodsDetailController, animated: true)
        }
    }
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 44.0
    }
}

// MARK: - UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout
extension SearchViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return hisResults.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: HisCellIdentifier, for: indexPath) as! SearchCell
        cell.textLabel.text = hisResults[indexPath.row]
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        self.searchBar.text = hisResults[indexPath.row]
        UIView.animate(withDuration: 0.5) {
            self.heightLayoutConstraint.constant = 0.0
        } completion: { (finished) in
            if finished {
                /// 查询数据
                self.requestSearchGoods(self.hisResults[indexPath.row])
            }
        }
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let width = hisResults[indexPath.row].getTextSize(font: .font_12, size: .zero).width+10.0
        return CGSize(width: width > 60.0 ? width : 60.0, height: 30.0)
    }
}

// MARK: - UITableViewDelegate, UISearchBarDelegate
extension SearchViewController: UISearchBarDelegate {
    
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
        /// 根据结果检索信息
        self.requestSearchGoods(searchBar.text ?? "")
    }
}

// MARK: - SearchCell
class SearchCell: UICollectionViewCell {
    /// 标题
    @IBOutlet weak var textLabel: UILabel! {
        didSet {
            textLabel.layer.cornerRadius = 10.0
            textLabel.layer.masksToBounds = true
        }
    }
}