FPS 應用程式互調

#import "FPSAppCallAppTool.h"
#import <UIKit/UIKit.h>
#import "define.h"

@implementation FPSAppCallAppTool

+ (FPSAppCallAppTool *)shareInstance {
    static FPSAppCallAppTool *model = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        if (!model) {
            model = [[FPSAppCallAppTool alloc] init];
        }
    });
    return model;
}

- (void)fpsPaymentResult:(NSDictionary *) result {
    NSLog(@"%@", result);
    [[NSNotificationCenter defaultCenter] postNotificationName:kNotificationNameFPSPaymentH5CallAppResult object:result];
}

- (UIViewController *)getCurrentWindowRootVC {
    for (UIScene *scene in [UIApplication sharedApplication].connectedScenes) {
        if ([scene isKindOfClass:[UIWindowScene class]]) {
            UIWindowScene *windowScene = (UIWindowScene *)scene;
            for (UIWindow *window in windowScene.windows) {
                if (window.isKeyWindow) {
                    return window.rootViewController;
                }
            }
        }
    }
    return nil;
}

- (void)invokePaymentExtension:(NSString *)paymentRequestURL {
    @try {
        if (!paymentRequestURL || paymentRequestURL.length <= 0) {
            [self showAlert];
            return;
        }
    } @catch (NSException *exception) {
        return;
    }

    NSString *callbackURL = @"https://img-int.qfapi.com/trade/123"; //

    NSDictionary *paymentPayload = @{
        @"URL": paymentRequestURL,
        @"callback": callbackURL
    };

    NSItemProvider *itemProvider = [[NSItemProvider alloc]
        initWithItem:paymentPayload
        typeIdentifier:@"hk.com.hkicl"];

    NSExtensionItem *extensionItem = [[NSExtensionItem alloc] init];
    extensionItem.attachments = @[itemProvider];

    UIActivityViewController *activityVC = [[UIActivityViewController alloc]
        initWithActivityItems:@[extensionItem]
        applicationActivities:nil];

    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
        activityVC.popoverPresentationController.sourceView = [self getCurrentWindowRootVC].view;
        activityVC.popoverPresentationController.sourceRect = [self getCurrentWindowRootVC].view.frame;
        activityVC.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
    }

    activityVC.completionWithItemsHandler = ^(UIActivityType  _Nullable activityType,
                                            BOOL completed,
                                            NSArray * _Nullable returnedItems,
                                            NSError * _Nullable error) {
        if (completed) {
            NSLog(@"用户选择了擴展：%@，處理完成", activityType);
        } else if (error) {
            NSLog(@"擴展調用失敗：%@", error.localizedDescription);
        } else {
            NSLog(@"用户取消了操作");
        }
    };

    [[self getCurrentWindowRootVC] presentViewController:activityVC animated:YES completion:nil];
}

- (void)showAlert{
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"没有輸入參數"
                                                                   message:@"請先輸入FPS支付參數"
                                                            preferredStyle:UIAlertControllerStyleAlert];

    [alert addAction:[UIAlertAction actionWithTitle:@"确定"
                                               style:UIAlertActionStyleCancel
                                             handler:nil]];
    [[self getCurrentWindowRootVC] presentViewController:alert animated:YES completion:nil];
}

#pragma mark - 解析連結中的查詢參數
- (void)parseQueryParamsFromCallbackURL:(NSURL *)url {
    NSURLComponents *components = [NSURLComponents componentsWithURL:url resolvingAgainstBaseURL:NO];
    NSArray<NSURLQueryItem *> *queryItems = components.queryItems;

    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    for (NSURLQueryItem *item in queryItems) {
        if (item.value) {
            params[item.name] = item.value;
        }
    }
    [self fpsPaymentResult: [params copy]];
}

@end

#import "FPSWKWebView.h"
#import <WebKit/WebKit.h>
#import "FPSAppCallAppTool.h"
#import "define.h"

@interface FPSWKWebView ()<WKScriptMessageHandler, WKNavigationDelegate, WKUIDelegate>
@property(copy, nonatomic) NSString *callbackId;
@end

@implementation FPSWKWebView

- (instancetype)initWithFrame:(CGRect)frame{
    WKUserContentController *userContentController = [[WKUserContentController alloc] init];
    [userContentController addScriptMessageHandler:self name:@"NativeBridge"];

    WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
    config.processPool = [[WKProcessPool alloc] init];
    config.userContentController = userContentController;
    config.preferences.javaScriptCanOpenWindowsAutomatically = YES;
    [config.preferences setValue:@YES forKey:@"allowFileAccessFromFileURLs"];

    self = [super initWithFrame:frame configuration:config];
    if (self) {
        self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
        self.navigationDelegate = self;
        self.UIDelegate = self;
        if (@available(iOS 16.4, *)) {
            self.inspectable = YES;
        }
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(fpsPaymentResult:)
                                                     name:kNotificationNameFPSPaymentH5CallAppResult
                                                   object:nil];
    }
    return self;
}

- (void)fpsPaymentResult:(NSNotification *)notification {
    NSDictionary *params = nil;
    NSString *ret = notification.object[@"is_successful"];
    if ([ret isEqualToString: @"0"]) {
        params = @{@"code": @"3000", @"respmsg": @"Failed"};
    } else {
        params = @{@"code": @"0000", @"respmsg": @"Success"};
    }

    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:params options:0 error:&error];
    if (error) return;

    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    NSString *jsCode = [NSString stringWithFormat:@"window.handleNativeCallback('%@', '%@');",
                        self.callbackId, jsonString];

    [self evaluateJavaScript:jsCode completionHandler:nil];
}

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

    if (![message.name isEqualToString:@"NativeBridge"]) return;

    NSDictionary *body = message.body;
    NSString *action = body[@"action"];
    NSString *callbackId = body[@"callbackId"];

    if ([action isEqualToString:@"FPSH5CallApp"]) {
        NSString *paymentRequestURL = body[@"params"][@"paymentRequestURL"];
        self.callbackId = callbackId;
        [[FPSAppCallAppTool shareInstance] invokePaymentExtension:paymentRequestURL];
    }
}

- (void)dealloc {
    [self.configuration.userContentController removeScriptMessageHandlerForName:@"NativeBridge"];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:kNotificationNameFPSPaymentH5CallAppResult object:nil];
}

@end