SwiftProject/MvpGoods/搜券/View/YMSearchPage...

//
//  YMSearchPageHeaderView.swift
//  MvpGoods
//
//  Created by 小花 on 2019/4/12.
//  Copyright © 2019 MVP. All rights reserved.
//

import UIKit

class YMSearchPageHeaderView: UIView {

    typealias ClickClosure = (_ text: String) -> Void
    typealias ClickSearch = () -> Void
    var clickClosure: ClickClosure?
    var clickSearch: ClickSearch?
    var scrollView: UIScrollView?
    var hotArr = [String]()
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        initSubViews()
        loadHotData()
    }
    
    func initSubViews() {
        let searchBg = UIView(frame: CGRect(x: 10, y: 0, width: self.width-20, height: 38))
        searchBg.backgroundColor = UIColor.white
        searchBg.layer.cornerRadius = 3
        self.addSubview(searchBg)
        
        let searchBtn = UIButton(frame: CGRect(x: 10, y: 0, width: searchBg.width, height: searchBg.height))
        searchBtn.titleLabel?.font = UIFont.systemFont(ofSize: 15)
        searchBtn.setTitleColor(UIColor.hexadecimalColor(hexadecimal: "#666666"), for: .normal)
        searchBtn.set(image: UIImage(named: "search_gray"), title: "输入淘宝天猫商品标题或关键词", titlePosition: .right, additionalSpacing: 5, state: .normal)
        searchBg.addSubview(searchBtn)
        searchBtn.addTarget(self, action: #selector(clickSearchAction), for: .touchUpInside)
        searchBtn.contentHorizontalAlignment = .left
        searchBg.addSubview(searchBtn)
        
        let rightBtn = UIButton(frame: CGRect(x: searchBg.width-67, y: 63, width: 63, height: 34))
        rightBtn.centerY = searchBg.height/2
        rightBtn.setTitle("搜索", for: .normal)
        rightBtn.backgroundColor = UIColor.gloadRedColor()
        rightBtn.layer.cornerRadius = 3
        rightBtn.titleLabel?.font = UIFont.systemFont(ofSize: 15)
        rightBtn.setTitleColor(UIColor.white, for: .normal)
        searchBg.addSubview(rightBtn)
        
        let scrollView = UIScrollView(frame: CGRect(x: 10, y: searchBg.bottom, width: self.width-20, height: 74))
        scrollView.showsHorizontalScrollIndicator = false
        self.addSubview(scrollView)
        self.scrollView = scrollView
    }
    
    func loadHotData() {
        let url = BASE_URL + "/api/v2/channel/hotsearch"
        NetWorkTool.getRequest(url: url, param: [:], success: { (json) in
            let items = json["rst"]?["data"].arrayObject
            
            for item in items ?? [] {
                let str = item as! [String: Any]
                let text = str["name"] as! String
                self.hotArr.append(text)
            }
            self.creatLabels(hotArr: self.hotArr)
            
        }) { (error) in
            
        }
    }
    
    func creatLabels(hotArr: [String]){
        let margin: CGFloat = 10
        var lastBtn = UIButton()
        lastBtn.right = -10
        for (index,value) in hotArr.enumerated() {
            if value.count > 0 {
                let width: CGFloat = self.widthForComment(fontSize: 12, height: 12, text: value)
                let btn = UIButton(frame: CGRect(x: lastBtn.right+margin, y: 26, width: width+20, height: 22))
                btn.setTitle(value, for: .normal)
                btn.titleLabel?.font = UIFont.systemFont(ofSize: 12)
                btn.setTitleColor(UIColor.white, for: .normal)
                btn.layer.cornerRadius = 11
                btn.backgroundColor = UIColor.init(white: 1, alpha: 0.2)
                btn.addTarget(self, action: #selector(clickAction(button:)), for: .touchUpInside)
                btn.tag = 1000+index
                lastBtn = btn
                self.scrollView?.addSubview(btn)
            }
            self.scrollView?.contentSize = CGSize(width: lastBtn.right+10, height: 74)
        }
    }
    
    
    func widthForComment(fontSize: CGFloat, height: CGFloat = 15,text: String) -> CGFloat {
        let font = UIFont.systemFont(ofSize: fontSize)
        let rect = text.boundingRect(with: CGSize(width: CGFloat(MAXFLOAT), height: height), options: .usesLineFragmentOrigin, attributes: [NSAttributedStringKey.font: font], context: nil)
        return ceil(rect.width)
    }
    
    @objc func clickAction(button: UIButton) {
        let index = button.tag - 1000
        let text = self.hotArr[index]
        self.clickClosure?(text)
    }
    
    @objc func clickSearchAction() {
        self.clickSearch?()
    }

}