//
//  UIViewController+Wallet.m
//  Unity-iPhone
//
//  Created by zhl on 2022/9/1.
//

#import "UIViewController+Wallet.h"
#import "QRCodeReaderViewController.h"
#import "QRCodeReader.h"
#import "QRCodeReaderDelegate.h"
#include <string>
#include "WalletEvent.h"



@implementation UIViewController (Wallet)

+(void)toWallet:(NSString *)url{
    UIApplication *app = [UIApplication sharedApplication];
    [app openURL:[NSURL URLWithString:url]];
}

-(void)scanQRCode:(NSString *)funid title:(NSString *) title{
    NSLog(@"scanQRCode:: funId: %@ title: %@", funid, title);
    std::string sfunid = std::string([funid UTF8String], [funid lengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
    if ([QRCodeReader supportsMetadataObjectTypes:@[AVMetadataObjectTypeQRCode]]) {
        static QRCodeReaderViewController *vc = nil;
        static dispatch_once_t onceToken;
        
        dispatch_async(dispatch_get_main_queue(), ^{
            // if we are active again, we don't need to do this anymore
            if (vc == nil) {
                QRCodeReader *reader = [QRCodeReader readerWithMetadataObjectTypes:@[AVMetadataObjectTypeQRCode]];
                vc = [QRCodeReaderViewController readerWithCancelButtonTitle:@"Cancel" codeReader:reader startScanningAtLoad:YES showSwitchCameraButton:YES showTorchButton:YES];
                vc.modalPresentationStyle = UIModalPresentationFormSheet;
            }
            
            [vc setCompletionWithBlock:^(NSString *resultAsString) {
                NSLog(@"Completion with result: %@", resultAsString);
                [self dismissViewControllerAnimated:YES completion:^{
                    
                    NSString *result;
                    if (resultAsString.length > 0) {
                        result = [NSString stringWithFormat:@"{errcode: 0, data: '%@'}", resultAsString];
                    } else {
                        result = [NSString stringWithFormat:@"{errcode: 1, errmsg: 'cancel'}"];
                    }
                    std::string sresult = std::string([result UTF8String], [result lengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
                    WalletEvent::Emit(sfunid.c_str(), sresult.c_str());
                }];
            }];
            [self presentViewController:vc animated:YES completion:NULL];
        });
      }
      else {
          dispatch_async(dispatch_get_main_queue(), ^{
              UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Error"
                                                                                       message:@"The camera is need to scan QR codes"
                                                                                preferredStyle:UIAlertControllerStyleAlert];
              //We add buttons to the alert controller by creating UIAlertActions:
              UIAlertAction *actionOk = [UIAlertAction actionWithTitle:@"Cancel"
                                                                 style:UIAlertActionStyleCancel
                                                               handler: ^(UIAlertAction *action){
                  NSLog(@"alert cancel pressed");
              }]; //You can use a block here to handle a press on this button
              //
              UIAlertAction *setting = [UIAlertAction actionWithTitle:@"Setting"
                                                                 style:UIAlertActionStyleDefault
                                                               handler: ^(UIAlertAction *action){
                  NSLog(@"setting pressed");
                  NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
                  if ([[UIApplication sharedApplication] canOpenURL:url]){
                      [[UIApplication sharedApplication] openURL:url];
                  }
              }];
              [alertController addAction:actionOk];
              [alertController addAction:setting];
              [self presentViewController:alertController animated:YES completion:nil];
          });
        
          std::string sresult = "{errcode: 1, errmsg: 'no camera permission'}";
          WalletEvent::Emit(sfunid.c_str(), sresult.c_str());
      }
}


@end