SafariViewManager.m

#import "SafariViewManager.h"
#import "RCTUtils.h"
#import "RCTLog.h"

@implementation SafariViewManager

RCT_EXPORT_MODULE()

RCT_EXPORT_METHOD(show:(NSDictionary *)args callback:(RCTResponseSenderBlock)callback)
{
    // Error if no url is passed
    if (!args[@"url"]) {
        RCTLogError(@"[SafariView] You must specify a url.");
        return;
    }
    
    // Initialize the Safari View
    SFSafariViewController *safariView = [[SFSafariViewController alloc] initWithURL:[NSURL URLWithString:args[@"url"]] entersReaderIfAvailable:args[@"readerMode"]];
    safariView.delegate = self;
    
    // Display the Safari View
    UIViewController *ctrl = [[[[UIApplication sharedApplication] delegate] window] rootViewController];
    [ctrl presentViewController:safariView animated:YES completion:nil];
}

RCT_EXPORT_METHOD(isAvailable:(RCTResponseSenderBlock)callback)
{
    if ([SFSafariViewController class]) {
        // SafariView is available
        return callback(@[[NSNull null], @true]);
    } else {
        return callback(@[RCTMakeError(@"SafariView is unavailable.", nil, nil)]);
    }
}


-(void)safariViewControllerDidFinish:(nonnull SFSafariViewController *)controller
{
    [controller dismissViewControllerAnimated:true completion:nil];
    NSLog(@"SafariView dismissed.");
}

@end