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background.js
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background.js
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'use strict';
var startTimes = {};
var mapper = {};
var totalTime = {};
var keys_in_db = [];
var values_in_db = [];
var currentTab;
var s = -1;
//worker
var worker = undefined;
chrome.runtime.onInstalled.addListener(function(){
alert("Please restart chrome to start using the Application");
});
function assignWorker(){
worker = new Worker('worker.js');
worker.addEventListener('message', function(e){
var data = e.data;
switch(data.cmd){
case 'timespent':
setData(data['website'], data['timespent']);
break;
case 'close':
}
});
}
function search(key){
chrome.storage.local.get(key, function(result){
if(result[key]){
return result[key];
}
return -1;
});
}
//setting up the keys in database.
chrome.storage.local.get(null, function(result){
keys_in_db = Object.keys(result);
values_in_db = Object.values(result);
});
function setData(key, value){
if(typeof key !== "undefined"){
value = parseInt(value);
key = key.toString();
//dataObj[key] = value;
chrome.storage.local.get(null, function(result){
if(result[key]){
//alert(result[key]);
value += parseInt(result[key]);
result[key] = value;
checkTimer(key, result[key]);
var time_limit = s;
if(time_limit>0 && value>time_limit){
dropTab();
}
}
else{
result[key]=parseInt(value);
}
chrome.storage.local.set(result, function() {
});
});
}
}
function dropTab(){
let web = mapper[currentTab];
chrome.tabs.remove(currentTab, function(){});
makeAlert(web);
}
function makeAlert(now_tab){
alert('From Anti_Addictor: Your daily time limit for '+now_tab+' is over');
}
function checkTimer(key, time){
chrome.storage.local.get('timer', function(result){
if(key+'_timer' in result['timer']){
s = parseInt(result['timer'][key+'_timer']);
}
else{
s = -1;
}
});
}
chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab){
if(changeInfo.status === "complete"){
var url = tab.url;
url = url.split('/')[2];
var mid = url.split('.');
if(mid[0] === "www"){
url = mid[1];
}
else{
url = mid[0];
}
if(!(url === "newtab")){
if(!(checkFirst(tabId)) && checkUrlChange(url, tabId)){
setTotalTime(mapper[tabId], tabId);
//setData(mapper[tabId], totalTime[mapper[tabId]]);
if(!(typeof worker === "undefined"))
worker.terminate();
delete mapper[tabId];
}
if(checkFirst(tabId)){
mapper[tabId] = url;
assignWorker();
var e = search(url+'_timer');
sendMessage(e);
setStartTime(url, tabId);
}
}}
else{
console.log('No url to show');
}
});
chrome.tabs.onRemoved.addListener(function(tabId, isWindowClosing){
if(tabId in mapper){
var url = mapper[tabId];
setTotalTime(url, tabId.toString());
//setData(url, totalTime[url]);
delete mapper[tabId];
delete startTimes[url+'_'+tabId.toString()];
}
});
// Is called when the active tab is changed.
chrome.tabs.onActivated.addListener(function(activeInfo){
var tabId = activeInfo['tabId'];
if(currentTab in mapper)
setTotalTime(mapper[currentTab], currentTab.toString());
if(tabId in mapper)
setStartTime(mapper[tabId],tabId);
setCurrentTab(tabId);
});
// Set the startaTimes of given url and tabId.
function setStartTime(url, tabId){
startTimes[url+'_'+tabId.toString()] = (new Date()).getTime();
}
// Sets currentTab variable.
function setCurrentTab(tabId){
if(typeof worker !== "undefined")
worker.terminate();
assignWorker();
currentTab = tabId;
if(currentTab in mapper)
sendMessage();
}
function sendMessage(e){
worker.postMessage({'cmd':'start','website':mapper[currentTab],'timer':e});
}
// Calculates Total time of given id and sets it to total time.
function setTotalTime(url, id){
if(url in totalTime)
totalTime[url] += (new Date()).getTime() - startTimes[url+'_'+id];
else
totalTime[url] = (new Date()).getTime() - startTimes[url+'_'+id];
}
function checkFirst(tabId){
return !(tabId in mapper);
}
function checkUrlChange(url, tabId){
return !(mapper[tabId] === url);
}