background.js

// can't record a new URL-visit entry within delayTime (in ms)
var delayTime = 5000;

// record user webcam input after inputTime (in ms)
var inputTime = 2500;

var allowFocusChange = true;

chrome.tabs.onUpdated.addListener(function (tabId, tabUpdateInfo, tabState) {
	if (allowFocusChange && isValidURL(tabUpdateInfo.url)) {
		var category = getCategory(tabUpdateInfo.url);
		if (category != 'Other') {
		chrome.storage.sync.get({ categories: [] }, function (items) {
			var categories;
			console.log(items)
			if (items == null) {
				categories = [];
				categories.push({
					category: category
				});
				chrome.storage.sync.set({ categories: categories }, function () {
					chrome.storage.local.get('categories', function (test) {
						console.log(test.categories)
					});
				});
			} else {
				categories = items.categories;
				categories.push({ category: category });
				chrome.storage.sync.set({ categories: categories }, function () {
					chrome.storage.local.get('sentiments', function (test) {
						console.log(test.categories)
					});
				});
			}
		});
		

			// placeholder for opening secondary capture window
			setTimeout(function() {
				chrome.windows.create({ url: './secondaryPopup/secondaryPopup.html', type: 'popup', top: 0, left: 0, height: 1, width: 1, focused: false });
				concatFocusChange();
			}, inputTime);
		}
	}
});

function concatFocusChange() {
	allowFocusChange = false;
	setTimeout(function () { allowFocusChange = true }, delayTime);
}

function isValidURL(url) {
	return (url != null && !url.startsWith('chrome'));
}

function getCategory(url) {
    if (url.includes("facebook")) return 'Social Networking';
    if (url.includes("amazon")) return 'Shopping';
    if (url.includes("cnn")) return 'News';
    if (url.includes("ubc")) return 'Education';
    if (url.includes("techcrunch")) return 'Technology';
    if (url.includes("nba")) return 'Sports';
    if (url.includes("bloomberg")) return 'Finance';
    return 'Other'
}

chrome.storage.onChanged.addListener(function (changes, namespace) {
	for (key in changes) {
		var storageChange = changes[key];
		console.log('Storage key "%s" in namespace "%s" changed. ' +
			'Old value was "%s", new value is "%s".',
			key,
			namespace,
			storageChange.oldValue,
			storageChange.newValue);
	}
});