storage-access-api-demo/iframe.html at master · pavgra/storage-access-api-demo · GitHub

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<html>
    <body>
        <div>
            <span>Cookie enabled:</span>
            <span id="cookie-status">False</span>
        </div>
        <div>
            <span>Storage Access status:</span>
            <span id="request-status">Not initiated</span>
        </div>
        <button id="allow-cookies" style="display: none">Allow cookies</button>
        <script type="text/javascript">
            window.localStorage.test = +(new Date());

            let prevCookieEnabledInNavigator = null;
            let prevCookieEnabledByTest = null;

            function isCookieEnabled() {
                let cookieEnabled = false;
                try {
                    // Browser response
                    let cookieEnabledInNav = navigator.cookieEnabled;

                    // Logging
                    if (cookieEnabledInNav !== prevCookieEnabledInNavigator) {
                        prevCookieEnabledInNavigator = cookieEnabledInNav;
                        console.log('navigator.cookieEnabled', cookieEnabledInNav);
                    }

                    // Actual result
                    let cookieEnabledByTest;

                    const sampleCookie = 'cookietest=1';
                    document.cookie = sampleCookie;
                    cookieEnabledByTest = document.cookie.includes(sampleCookie);
                    document.cookie = `${sampleCookie}; expires=Thu, 01-Jan-1970 00:00:01 GMT`;

                    // Logging
                    if (cookieEnabledByTest !== prevCookieEnabledByTest) {
                        prevCookieEnabledByTest = cookieEnabledByTest;
                        console.log('cookieEnabledByTest', cookieEnabledByTest);
                    }

                    cookieEnabled = cookieEnabledByTest;
                } catch (e) {
                    cookieEnabled = false;
                }

                // Set test cookie
                if (cookieEnabled) {
                    document.cookie = `debug-storage-access-api=${+(new Date())}`;
                }

                return cookieEnabled;
            }

            function displayCookieStatusEnabled() {
                document.querySelector('#cookie-status').innerHTML = 'True';
            }

            function displayRequestStatus(status) {
                document.querySelector('#request-status').innerHTML = status;
            }

            function toggleRequestButtonDisplay(state) {
                document.querySelector('#allow-cookies').style.display = state ? 'block' : 'none';
            }

            function pollCookieStatus() {
                setTimeout(
                    () => {
                        if (isCookieEnabled()) {
                            displayCookieStatusEnabled();
                        } else {
                            pollCookieStatus();
                        }
                    },
                    1000
                );
            }

            function initiateStorageAccessApiRequest() {
                displayRequestStatus('Initiated request');
                document.requestStorageAccess().then(
                    () => {
                        displayRequestStatus('Accepted');
                        window.localStorage.test = +(new Date());
                        toggleRequestButtonDisplay(false);
                        pollCookieStatus();
                    },
                    (...args) => {
                        displayRequestStatus('Rejected');
                    }
                );
            }

            document.querySelector('#allow-cookies').addEventListener('click', initiateStorageAccessApiRequest);

            if (isCookieEnabled()) {
                document.querySelector('#cookie-status').innerHTML = 'True';
            } else {
                if (document.requestStorageAccess) {
                    document.hasStorageAccess().then(
                        hasAccess => {
                            console.log('hasStorageAccess', hasAccess);
                            !hasAccess && toggleRequestButtonDisplay(true);
                        },
                        reason => {
                            console.log('hasStorageAccess', reason);
                            toggleRequestButtonDisplay(true);
                        }
                    );
                } else {
                    displayRequestStatus('Not available');
                    pollCookieStatus();
                }
            }
        </script>
    </body>
</html>