113 lines
2.8 KiB
JavaScript
113 lines
2.8 KiB
JavaScript
import 'promise-polyfill/src/polyfill';
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import 'unfetch/polyfill';
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((window, sessionKey) => {
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const {
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screen: { width, height },
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navigator: { language },
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location: { hostname, pathname, search },
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localStorage: store,
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document,
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history,
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} = window;
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const script = document.querySelector('script[data-website-id]');
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const website = script && script.getAttribute('data-website-id');
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const hostUrl = new URL(script.src).origin;
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const screen = `${width}x${height}`;
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const listeners = [];
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let currentUrl = `${pathname}${search}`;
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let currentRef = document.referrer;
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/* Helper methods */
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const post = (url, params) =>
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fetch(url, {
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method: 'post',
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cache: 'no-cache',
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headers: {
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Accept: 'application/json',
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'Content-Type': 'application/json',
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},
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body: JSON.stringify(params),
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}).then(res => res.json());
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const collect = (type, params) => {
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const payload = {
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session: store.getItem(sessionKey),
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url: currentUrl,
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referrer: currentRef,
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website,
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hostname,
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screen,
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language,
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};
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if (params) {
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Object.keys(params).forEach(key => {
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payload[key] = params[key];
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});
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}
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return post(`${hostUrl}/api/collect`, {
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type,
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payload,
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}).then(({ ok, session }) => ok && session && store.setItem(sessionKey, session));
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};
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const pageView = () => collect('pageview').then(() => setTimeout(loadEvents, 300));
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const pageEvent = (event_type, event_value) => collect('event', { event_type, event_value });
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/* Handle history */
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const handlePush = (state, title, url) => {
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removeEvents();
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currentRef = currentUrl;
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currentUrl = url;
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pageView();
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};
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const hook = (type, cb) => {
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const orig = history[type];
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return (state, title, url) => {
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const args = [state, title, url];
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cb.apply(null, args);
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return orig.apply(history, args);
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};
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};
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history.pushState = hook('pushState', handlePush);
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history.replaceState = hook('replaceState', handlePush);
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/* Handle events */
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const removeEvents = () => {
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listeners.forEach(([element, type, listener]) => {
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element && element.removeEventListener(type, listener, true);
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});
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listeners.length = 0;
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};
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const loadEvents = () => {
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document.querySelectorAll("[class*='umami--']").forEach(element => {
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element.className.split(' ').forEach(className => {
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if (/^umami--([a-z]+)--([a-z0-9_]+[a-z0-9-_]+)$/.test(className)) {
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const [, type, value] = className.split('--');
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const listener = () => pageEvent(type, value);
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listeners.push([element, type, listener]);
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element.addEventListener(type, listener, true);
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}
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});
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});
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};
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/* Start */
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pageView();
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})(window, 'umami.session');
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