struct CashbackWebView: UIViewRepresentable {
	...
	func makeUIView(context: Context) -> WKWebView {
		let config = WKWebViewConfiguration()
		let preferences = WKPreferences()
		
		// 1) JS 팝업/새 창 허용
    preferences.javaScriptCanOpenWindowsAutomatically = true
    config.preferences = preferences
    
    // 2) 페이지 내 JS 실행 허용
    config.defaultWebpagePreferences.allowsContentJavaScript = true
    
    // 3) DOM storage (localStorage / sessionStorage) 활성화
    // WKWebView는 기본적으로 켜져 있지만, 웹킷 버전에 따라 동작이 다를 수 있어 명시적으로 설정
    config.websiteDataStore = .default()
    
    // 4) 쿠키 공유 허용
    // iOS14 이상에서는 default() 스토어가 쿠키를 자동으로 관리하지만,
    // iOS13 이하를 지원해야 할 때는 수동으로 Cookie를 동기화해줘야 합니다.
    let webView = WKWebView(frame: .zero, configuration: config)
    let cookieStore = webView.configuration.websiteDataStore.httpCookieStore
    // (예시) 저장된 쿠키 불러오기
    HTTPCookieStorage.shared.cookies?.forEach { cookie in
        cookieStore.setCookie(cookie)
    }
        
		let webView = WKWebView(frame: .zero, configuration: config)
		context.coordinator.webView = webView
		context.coordinator.load(redirectTo: redirectTo)
		webView.uiDelegate = context.coordinator
    
    return webView
	}
}

struct CashbackWebView: UIViewRepresentable {
	...
	class Coordinator: NSObject, WKScriptMessageHandler, WKUIDelegate {
		func webView(_ webView: WKWebView,
								 createWebViewWith configuration: WKWebViewConfiguration,
	               for navigationAction: WKNavigationAction,
	               windowFeatures: WKWindowFeatures) -> WKWebView? {
			guard let url = navigationAction.request.url else { return nil }
	
			if let host = url.host, host.contains(FAIRY_CASHBACK_DOMAIN) {
				// 캐시백 도메인 내부 요청은 WebView 내에서 처리
				return nil
			} else {
				// 그 외, 외부 링크는 기본 브라우저에서 열기
				UIApplication.shared.open(url)
				return nil
			}
		}
	}
}

struct CashbackWebView: UIViewRepresentable {
	...
	func makeUIView(context: Context) -> WKWebView {
		let config = WKWebViewConfiguration()
		let controller = WKUserContentController()
		...

		// JS bridge: window.fairyCashbackBridge.finish() / reload(redirectTo)
		let js = """
			window.fairyCashbackBridge = {
				finish: function() {
					window.webkit.messageHandlers.finish.postMessage({});
				},
				reload: function(redirectTo) {
					window.webkit.messageHandlers.reload.postMessage({redirectTo: redirectTo});
				}
			};
		"""
		controller.addUserScript(WKUserScript(source: js, injectionTime: .atDocumentStart, forMainFrameOnly: false))
		controller.add(context.coordinator, name: "finish")
		controller.add(context.coordinator, name: "reload")

		config.userContentController = controller
		...
        
		return webView
	}
	
	class Coordinator: NSObject, WKScriptMessageHandler, WKUIDelegate {
		...
		func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
			if message.name == "finish" {
				onFinish()
			} else if message.name == "reload" {
				let redirectTo = (message.body as? [String: Any])?["redirectTo"] as? String
				load(redirectTo: redirectTo)
			}
		}
		
		func load(redirectTo: String? = nil) {
			var components = URLComponents()
			components.scheme = "https"
			components.host   = FAIRY_CASHBACK_DOMAIN
			components.path   = FAIRY_CASHBACK_PATH

			if let redirectTo = redirectTo {
				components.queryItems = [
					URLQueryItem(name: "redirect_to", value: redirectTo)
				]
			}

			guard let finalUrl = components.url else { return }
			var request = URLRequest(url: finalUrl)
            
			request.setValue(userId, forHTTPHeaderField: "x-moment-user-id")
			request.setValue(projectId, forHTTPHeaderField: "x-moment-project-id")
			request.setValue(apiKey, forHTTPHeaderField: "x-moment-web-api-key")
			request.setValue("IOS", forHTTPHeaderField: "x-moment-platform")

			webView?.load(request)
		}
	}
}

func load(redirectTo: String? = nil) {
	var components = URLComponents()
	components.scheme = "https"
	components.host   = FAIRY_CASHBACK_DOMAIN
	components.path   = FAIRY_CASHBACK_PATH

	if let redirectTo = redirectTo {
		components.queryItems = [
			URLQueryItem(name: "redirect_to", value: redirectTo)
		]
	}

	guard let finalUrl = components.url else { return }
	var request = URLRequest(url: finalUrl)
            
	request.setValue(userId, forHTTPHeaderField: "x-moment-user-id")
	request.setValue(projectId, forHTTPHeaderField: "x-moment-project-id")
	request.setValue(apiKey, forHTTPHeaderField: "x-moment-web-api-key")
	request.setValue("IOS", forHTTPHeaderField: "x-moment-platform")

	webView?.load(request)
}