import "WKWebViewViewController.h"

import <WebKit/WebKit.h>

@interface WKWebViewViewController ()
<
WKScriptMessageHandler,
WKUIDelegate

@property (strong, nonatomic) WKWebView *wkWebView;

@end

@implementation WKWebViewViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view.

[self initWKWebView];

}

pragma mark

pragma mark - Configuration

• (void)initWKWebView {

  WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
  configuration.userContentController = [WKUserContentController new];

  self.wkWebView = [[WKWebView alloc] initWithFrame:self.view.frame configuration:configuration];
  //绑定html的btn点击事件 去掉click
  [configuration.userContentController addScriptMessageHandler:self name:@"ShowMessageFromWKWebView"];

  NSString *webViewURLStr = [[NSBundle mainBundle] pathForResource:@"index.html" ofType:nil];
  NSURL *fileURL = [NSURL fileURLWithPath:webViewURLStr];
  [self.wkWebView loadFileURL:fileURL allowingReadAccessToURL:fileURL];
  self.wkWebView.UIDelegate = self;
  [self.view addSubview:self.wkWebView];
  }

pragma mark

pragma mark - WKScriptMessageHandler

• (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {

  NSLog(@"body:%@", message.body);

  if ([message.name isEqualToString:@"ShowMessageFromWKWebView"]) {
  [self showMessageWithParams:message.body];
  }
  }

pragma mark

pragma mark - WKUIDelegate

/*
*响应JS里的alert提醒
/
/
function asyncAlert(alertStr) {
setTimeout(function() {
alert(alertStr);
}, 1);
}
*/

• (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {

  UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提醒" message:message preferredStyle:UIAlertControllerStyleAlert];
  [alertController addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
  completionHandler();
  }]];

  [self presentViewController:alertController animated:YES completion:nil];
  }

pragma mark

pragma mark - Show Message

• (void)showMessageWithParams:(NSDictionary *)dict {

  if (![dict isKindOfClass:[NSDictionary class]]) {
  return;
  }

  NSString *messageStr = [dict objectForKey:@"message"];
  NSString *titleStr = [dict objectForKey:@"title"];
  NSLog(@"title:%@", titleStr);
  NSLog(@"messageStr:%@", messageStr);

  // do it

  // 将结果返回给js
  NSString *returnJSStr = [NSString stringWithFormat:@"showMessageFromWKWebViewResult('%@')", @"message传到OC成功，message传到OC成功，message传到OC成功，message传到OC成功，message传到OC成功，message传到OC成功"];
  [self.wkWebView evaluateJavaScript:returnJSStr completionHandler:^(id _Nullable result, NSError * _Nullable error) {

    NSLog(@"%@,%@", result, error);
  

  }];
  }

@end