//
//  JSViewController.swift
//  ParentAssistant
//
//  Created by 葛建军 on 2018/3/17.
//  Copyright © 2018年 HANGZHOUTEAM. All rights reserved.
//

import UIKit
import WebKit
class JSViewController: UIViewController,WKUIDelegate,WKScriptMessageHandler,UIActionSheetDelegate,WKNavigationDelegate {
    var wkWebView:WKWebView!
    var ary:[String]=[]
    var jsAry:[String]=[]
    var webURL:String!
    @IBOutlet var progressView: UIProgressView!
    @IBOutlet var closeMenu: UIBarButtonItem!
    @IBOutlet var moreMenu: UIBarButtonItem!
    var loadingView:UIView!
    var loadingImageWidth:CGFloat = 60
    var borderline:Bool = false//web页面有无边框
    override func viewDidLoad() {
        super.viewDidLoad()
        if let url = URL(string: webURL){
            
        }else{
            return
        }
        // js配置
        // WKWebView的配置
        let configuration=WKWebViewConfiguration()
        configuration.userContentController.add(self, name: "onTokenSetup")
        configuration.userContentController.add(self, name: "setMenu")
        configuration.userContentController.add(self, name: "clearMenu")
        // 显示WKWebView
        wkWebView=WKWebView(frame: CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: getScreenHeight()-64),configuration: configuration)
        // 有web页面要求留边框
        var line:CGFloat = 0
        if borderline {
            line = 16
        }
        if UIApplication.shared.statusBarFrame.size.height>20 {
            wkWebView.frame = CGRect(x: line, y: line, width: self.view.frame.size.width-2*line, height: getScreenHeight()-88-line)
        }else{
            wkWebView.frame = CGRect(x: line, y: line, width: self.view.frame.size.width-2*line, height: getScreenHeight()-64-line)
        }
        wkWebView.uiDelegate=self
        wkWebView.navigationDelegate=self
        self.wkWebView.load(Foundation.URLRequest(url: URL(string: webURL)!))
        wkWebView.addObserver(self, forKeyPath: "estimatedProgress", options: NSKeyValueObservingOptions.new, context: nil)
        wkWebView.addObserver(self, forKeyPath: "title", options: NSKeyValueObservingOptions.new, context: nil)
        if ary.count==0 {
            self.navigationItem.rightBarButtonItems = [closeMenu]
        }
        self.view.insertSubview(wkWebView, belowSubview: progressView)
        loadingView = UIView(frame: UIScreen.main.bounds)
        loadingView.backgroundColor = UIColor.black.withAlphaComponent(0.3)
        let loadImage = UIImageView()
        loadImage.frame.size = CGSize(width: loadingImageWidth, height: loadingImageWidth)
        loadImage.center = CGPoint(x: getScreenWidth()/2, y: getScreenHeight()/2-64-loadingImageWidth/2)
        var arr:[UIImage] = []
        for i in 0...4 {
            let image = UIImage(named: "js_load_icon_\(i+1)")
            arr.append(image!)
        }
        loadImage.animationImages = arr
        loadImage.animationDuration = 2
        loadingView.addSubview(loadImage)
        let label = UILabel()
        label.text = "正在拼命加载中..."
        label.textColor = UIColor.white
        label.sizeToFit()
        label.center = CGPoint(x: getScreenWidth()/2, y: getScreenHeight()/2-64+30)
        loadingView.addSubview(label)
        loadImage.startAnimating()
        self.view.insertSubview(loadingView, aboveSubview: progressView)
    }
    func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {

        DebugLog( "方法名：\(message.name),参数：\(message.body)")
        // 调用方法
        if message.name == "setMenu" {
            ary=[]
            jsAry=[]
            let array=message.body as! [NSDictionary]
            for item in array {
                ary.append((item["title"] as? String)!)
                jsAry.append((item["action"] as? String)!)
            }
            if ary.count>0 {
                self.navigationItem.rightBarButtonItems=[moreMenu,closeMenu]
            }else{
                self.navigationItem.rightBarButtonItems = [closeMenu]
            }
        }
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    @IBAction func closeAction(_ sender: AnyObject) {
        navigationController?.dismiss(animated: true, completion: nil)
    }
    
    @IBAction func showJSAlert(_ sender: UIBarButtonItem) {
        let action=UIActionSheet(title: nil, delegate: self, cancelButtonTitle: "取消", destructiveButtonTitle: nil)
        for title in ary {
            action.addButton(withTitle: title)
        }
        action.show(in: self.view)
    }
    func actionSheet(_ actionSheet: UIActionSheet, clickedButtonAt buttonIndex: Int) {
        
        for i in 1...ary.count {
            if buttonIndex==i {
                self.wkWebView.evaluateJavaScript(jsAry[i-1], completionHandler: { (data, error) in
                    if error != nil {
                        DebugLog( "错误：\(String(describing: error?.localizedDescription)))")
                    }
                })
            }
        }
    }
    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
        if keyPath=="estimatedProgress" {
            if object as! WKWebView == self.wkWebView {
                self.progressView.alpha=1.0
                self.progressView.setProgress(Float(wkWebView.estimatedProgress), animated: true)
                DebugLog( "+++++++++++++++++\(Float(wkWebView.estimatedProgress))")
                if wkWebView.estimatedProgress >= 1.0 {
                    UIView.animate(withDuration: 0.3, delay: 0.3, options: UIViewAnimationOptions.curveEaseIn, animations: {
                        self.progressView.alpha=0.0
                    }, completion: { (finished) in
                        self.progressView.setProgress(0.0, animated: false)
                    })
                }
            }else{
                super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
            }
        }else if keyPath=="title" {
            if object as! WKWebView == self.wkWebView {
                self.navigationItem.title=self.wkWebView.title
            }else{
                super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
            }
        }else{
            super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
        }
    }
    
    @IBAction func onBackClicked(_ sender: UIBarButtonItem) {
        if wkWebView.canGoBack{
            wkWebView.goBack()
        }else{
            navigationController?.dismiss(animated: true, completion: nil)
        }
    }
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        if webView.title! != "身份验证..." {
            loadingView.removeFromSuperview()
        }
        if webURL.contains("gettoken") {
            let token = AccountManager.shared.loadToken()?["access_token"].stringValue ?? "0"
            webView.evaluateJavaScript("onTokenSetup(\"\(token)\");", completionHandler: { (str, error) in
                if error==nil {
                }else{
                }
            })
        }
    }
    
    func webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {
        completionHandler()
        let alert=UIAlertController(title: "提示",message: "\(message)",preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "cancel", style: .cancel, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
    func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (Bool) -> Void) {
        completionHandler(false)
    }
    func webView(_ webView: WKWebView, runJavaScriptTextInputPanelWithPrompt prompt: String, defaultText: String?, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (String?) -> Void) {
        completionHandler(nil)
    }
    
    //    func webView(webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: (Bool) -> Void) {
    //        let token = AccountManager.shared.loadToken()?["access_token"].stringValue ?? "0"
    //        webView.evaluateJavaScript("onTokenSetup(\"\(token)\");", completionHandler: { (str, error) in
    //            if error==nil {
    //
    //            }else{
    //                showAlertView((error?.description)!)
    //            }
    //        })
    //        self.navigationItem.title = webView.title
    //    }
    
    
    /*
     // MARK: - Navigation
     
     // In a storyboard-based application, you will often want to do a little preparation before navigation
     override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
     // Get the new view controller using segue.destinationViewController.
     // Pass the selected object to the new view controller.
     }
     */
    
}