web load v2
This commit is contained in:
@@ -363,111 +363,110 @@
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</script>
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</script>
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<script defer="">
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<script defer="">
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var serviceWorkerVersion = '{{flutter_service_worker_version}}';
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var serviceWorkerVersion = '{{flutter_service_worker_version}}';
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var scriptLoaded = false;
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var scriptLoaded = false;
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function loadMainDartJs() {
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function loadMainDartJs() {
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console.log('Loading app...');
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console.log('Loading app...');
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if (scriptLoaded) {
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if (scriptLoaded) {
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return;
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return;
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}
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}
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scriptLoaded = true;
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scriptLoaded = true;
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{{flutter_js}}
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{{flutter_js}}
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{{flutter_build_config}}
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{{flutter_build_config}}
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_flutter.loader.load({
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_flutter.loader.load({
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serviceWorker: {
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serviceWorker: {
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serviceWorkerVersion: serviceWorkerVersion,
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serviceWorkerVersion: serviceWorkerVersion,
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},
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},
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onEntrypointLoaded: function (engineInitializer) {
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onEntrypointLoaded: function (engineInitializer) {
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engineInitializer.initializeEngine().then(function (appRunner) {
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engineInitializer.initializeEngine().then(function (appRunner) {
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appRunner.runApp();
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appRunner.runApp();
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});
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});
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}
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}
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});
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});
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}
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}
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// Helper function to strip quotes from the version placeholder
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// Helper function to strip quotes from the version placeholder
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function getCleanVersion(version) {
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function getCleanVersion(version) {
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return version.replace(/"/g, '');
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return version.replace(/"/g, '');
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}
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}
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if ('serviceWorker' in navigator) {
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var startLoad = new Date();
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// Service workers are supported. Use them.
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window.addEventListener('load', function () {
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var cleanServiceWorkerVersion = getCleanVersion(serviceWorkerVersion);
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var serviceWorkerUrl = 'flutter_service_worker.js?v=' + cleanServiceWorkerVersion;
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navigator.serviceWorker.register(serviceWorkerUrl)
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if ('serviceWorker' in navigator) {
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.then((reg) => {
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var startLoad = new Date();
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function waitForActivation(serviceWorker) {
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// Service workers are supported. Use them.
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serviceWorker.addEventListener('statechange', () => {
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window.addEventListener('load', function () {
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if (serviceWorker.state == 'activated') {
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var cleanServiceWorkerVersion = getCleanVersion(serviceWorkerVersion);
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console.log('Installed new service worker.');
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var serviceWorkerUrl = 'flutter_service_worker.js?v=' + cleanServiceWorkerVersion;
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loadMainDartJs();
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// Optional: Prompt user to reload for the new version to take effect
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// The user is currently running the OLD cached version of the app.
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// This prompt is generally preferred over the previous logic.
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if (navigator.serviceWorker.controller) {
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// Only prompt if this isn't the first time loading.
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console.log('New app version activated. Prompting for reload.');
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// You can replace this confirm with a better UI notification.
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if (confirm('A new version of the app is available. Refresh now to update?')) {
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window.location.reload();
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}
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}
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}
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});
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}
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const currentSWVersion = reg.active ? reg.active.scriptURL.split("=")[1].replaceAll("%22", "") : null;
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navigator.serviceWorker.register(serviceWorkerUrl)
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console.log('Active Service Worker URL: ' + (reg.active ? reg.active.scriptURL : 'None'));
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.then((reg) => {
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console.log('Latest Service Worker Version: ' + cleanServiceWorkerVersion);
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function waitForActivation(serviceWorker, isFirstTimeInstall) {
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console.log('Active Service Worker Version: ' + (currentSWVersion || 'None'));
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serviceWorker.addEventListener('statechange', () => {
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const isMatch = currentSWVersion === cleanServiceWorkerVersion;
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if (serviceWorker.state == 'activated') {
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console.log('Latest Service Worker Installed: ' + isMatch);
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console.log('Installed new service worker.');
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loadMainDartJs();
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// Only prompt if this is NOT the first time installing (i.e., returning user)
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if (!isFirstTimeInstall && navigator.serviceWorker.controller) {
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console.log('New app version activated. Prompting for reload.');
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// You can replace this confirm with a better UI notification.
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if (confirm('A new version of the app is available. Refresh now to update?')) {
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window.location.reload();
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}
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} else if (isFirstTimeInstall) {
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console.log('First time install - skipping reload prompt.');
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}
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}
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});
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}
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const currentSWVersion = reg.active ? reg.active.scriptURL.split("=")[1].replaceAll("%22", "") : null;
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console.log('Active Service Worker URL: ' + (reg.active ? reg.active.scriptURL : 'None'));
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console.log('Latest Service Worker Version: ' + cleanServiceWorkerVersion);
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console.log('Active Service Worker Version: ' + (currentSWVersion || 'None'));
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const isMatch = currentSWVersion === cleanServiceWorkerVersion;
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console.log('Latest Service Worker Installed: ' + isMatch);
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if (!reg.active && (reg.installing || reg.waiting)) {
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if (!reg.active && (reg.installing || reg.waiting)) {
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// First time load: wait for activation.
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// First time load: wait for activation but don't prompt.
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console.log('No Service Worker Available - Installing New Service Worker.');
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console.log('No Service Worker Available - Installing New Service Worker.');
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waitForActivation(reg.installing || reg.waiting);
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waitForActivation(reg.installing || reg.waiting, true); // true = first time install
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} else if (!isMatch) {
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} else if (!isMatch) {
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// New version available: force update.
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// New version available: force update (returning user).
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console.log('New service worker available. Updating and waiting for activation.');
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console.log('New service worker available. Updating and waiting for activation.');
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reg.update();
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reg.update();
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waitForActivation(reg.installing);
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waitForActivation(reg.installing, false); // false = not first time
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} else {
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} else {
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// Existing service worker is still good.
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// Existing service worker is still good.
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console.log('Service Worker up-to-date, Loading app.');
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console.log('Service Worker up-to-date, Loading app.');
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loadMainDartJs();
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loadMainDartJs();
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}
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}
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})
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})
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.catch((error) => {
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.catch((error) => {
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console.error('Service Worker registration failed:', error);
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console.error('Service Worker registration failed:', error);
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loadMainDartJs(); // Fallback if registration fails completely
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loadMainDartJs(); // Fallback if registration fails completely
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});
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});
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// If service worker doesn't succeed in a reasonable amount of time,
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// If service worker doesn't succeed in a reasonable amount of time,
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// fallback to plain <script> tag.
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// fallback to plain <script> tag.
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setTimeout(() => {
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setTimeout(() => {
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if (!scriptLoaded) {
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if (!scriptLoaded) {
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console.warn(
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console.warn(
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'Failed to load app from a service worker. Falling back to plain <script> tag.',
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'Failed to load app from a service worker. Falling back to plain <script> tag.',
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);
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);
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loadMainDartJs();
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loadMainDartJs();
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}
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}
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}, 500);
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}, 500);
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var finishLoad = new Date();
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var finishLoad = new Date();
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var loadTime = (finishLoad.getTime() - startLoad.getTime());
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var loadTime = (finishLoad.getTime() - startLoad.getTime());
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console.log("Load Time: " + loadTime);
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console.log("Load Time: " + loadTime);
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});
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});
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}
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}
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else {
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else {
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// Service workers not supported. Just drop the <script> tag.
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// Service workers not supported. Just drop the <script> tag.
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console.log('Service Workers Not Supported. Loading app directly.');
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console.log('Service Workers Not Supported. Loading app directly.');
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loadMainDartJs();
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loadMainDartJs();
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}
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}
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</script>
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</script>
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