/* global CONFIG, firebase */
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firebase.initializeApp({
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apiKey : CONFIG.firestore.apiKey,
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projectId: CONFIG.firestore.projectId
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});
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(function() {
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const getCount = (doc, increaseCount) => {
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// IncreaseCount will be false when not in article page
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return doc.get().then(d => {
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// Has no data, initialize count
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let count = d.exists ? d.data().count : 0;
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// If first view this article
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if (increaseCount) {
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// Increase count
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count++;
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doc.set({
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count
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});
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}
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return count;
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});
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};
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const db = firebase.firestore();
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const articles = db.collection(CONFIG.firestore.collection);
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document.addEventListener('page:loaded', () => {
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if (CONFIG.page.isPost) {
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// Fix issue #118
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// https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent
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const title = document.querySelector('.post-title').textContent.trim();
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const doc = articles.doc(title);
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let increaseCount = CONFIG.hostname === location.hostname;
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if (localStorage.getItem(title)) {
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increaseCount = false;
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} else {
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// Mark as visited
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localStorage.setItem(title, true);
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}
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getCount(doc, increaseCount).then(count => {
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document.querySelector('.firestore-visitors-count').innerText = count;
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});
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} else if (CONFIG.page.isHome) {
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const promises = [...document.querySelectorAll('.post-title')].map(element => {
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const title = element.textContent.trim();
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const doc = articles.doc(title);
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return getCount(doc);
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});
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Promise.all(promises).then(counts => {
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const metas = document.querySelectorAll('.firestore-visitors-count');
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counts.forEach((val, idx) => {
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metas[idx].innerText = val;
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});
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});
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}
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});
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})();
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