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67 lines
1.9 KiB
67 lines
1.9 KiB
// Copyright 2015-present 650 Industries. All rights reserved.
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#import <EXConstants/EXConstants.h>
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#import <ExpoModulesCore/EXConstantsInterface.h>
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#import <WebKit/WKWebView.h>
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@interface EXConstants () {
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WKWebView *webView;
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}
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@property (nonatomic, strong) NSString *webViewUserAgent;
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@property (nonatomic, weak) id<EXConstantsInterface> constantsService;
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@end
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@implementation EXConstants
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EX_REGISTER_MODULE();
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+ (const NSString *)exportedModuleName
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{
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return @"ExponentConstants";
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}
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- (void)setModuleRegistry:(EXModuleRegistry *)moduleRegistry
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{
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_constantsService = [moduleRegistry getModuleImplementingProtocol:@protocol(EXConstantsInterface)];
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}
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- (NSDictionary *)constantsToExport
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{
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return [_constantsService constants];
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}
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EX_EXPORT_METHOD_AS(getWebViewUserAgentAsync,
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getWebViewUserAgentWithResolver:(EXPromiseResolveBlock)resolve
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rejecter:(EXPromiseRejectBlock)reject)
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{
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__weak EXConstants *weakSelf = self;
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dispatch_async(dispatch_get_main_queue(), ^{
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__strong EXConstants *strongSelf = weakSelf;
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if (strongSelf) {
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if (!strongSelf.webViewUserAgent) {
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// We need to retain the webview because it runs an async task.
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strongSelf->webView = [[WKWebView alloc] init];
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[strongSelf->webView evaluateJavaScript:@"window.navigator.userAgent;" completionHandler:^(id _Nullable result, NSError * _Nullable error) {
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if (error) {
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reject(@"ERR_CONSTANTS", error.localizedDescription, error);
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return;
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}
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strongSelf.webViewUserAgent = [NSString stringWithFormat:@"%@", result];
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resolve(EXNullIfNil(strongSelf.webViewUserAgent));
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// Destroy the webview now that it's task is complete.
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strongSelf->webView = nil;
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}];
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} else {
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resolve(EXNullIfNil(strongSelf.webViewUserAgent));
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}
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}
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});
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}
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@end
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