coupon-at-checkout

gistfile1.js

/*
 * Coupons at Checkout Browser Extension
 * Copyright (c) 2012, 2013 CouponFollow, LLC.  All rights reserved.
 * Copying this source code in any manner is strictly prohibited.  
 */

"use strict";

var storage = chrome.storage.local;

var cf = {
  
  history: [],
  helpers: {},
  blacklist: {},
  updates: {},
  
  init: function() {
    this.checkVersion();
    
    storage.get({helpers: {}, blacklist: {}, updates: {}}, function(items) {
      cf.helpers = items.helpers;
      cf.blacklist = items.blacklist;
      cf.updates = items.updates;
      cf.checkUpdates();
    });
    
    chrome.extension.onRequest.addListener(requestHandler);
  },
  
  checkVersion: function() {
    var currVersion = chrome.app.getDetails().version;
    var prevVersion = localStorage['version']
    if (currVersion != prevVersion) {
      if (typeof prevVersion == 'undefined') {
        chrome.tabs.create({url: 'http://couponfollow.com/checkout/chrome/success'});
      } else {
        //chrome.tabs.create({url: 'http://couponfollow.com/checkout/chrome/updated'});
      }
      localStorage['version'] = currVersion;
    }
  },
  
  checkUpdates: function() {
    remoteGet('http://couponfollow.com/files/addon/catc_updates.json', function(updates) {
      
      // Check and update helpers
      var helpersLocalTime = Date.parse(cf.updates.helpersUpdated);
      var helpersRemoteTime = Date.parse(updates.helpersUpdated);
      if (helpersLocalTime) {
        if (helpersLocalTime < helpersRemoteTime) {
          cf.updateHelpers();
        }
      } else {
        cf.updateHelpers();
      }
      
      // Check and update blacklist
      var blacklistLocalTime = Date.parse(cf.updates.blacklistUpdated);
      var blacklistRemoteTime = Date.parse(updates.blacklistUpdated);
      if (blacklistLocalTime) {
        if (blacklistLocalTime < blacklistRemoteTime) {
          cf.updateBlacklist();
        }
      } else {
        cf.updateBlacklist();
      }
      
      cf.updates = updates;
      storage.set({'updates': cf.updates});
    });
  },
  
  updateHelpers: function() {
    remoteGet('http://couponfollow.com/files/addon/catc_helpers.json', function(data) {
      cf.helpers = {};
      if (data.records > 0) {
        for (var i = 0; i < data.helpers.length; i++) {
          var helper = data.helpers[i];
          cf.helpers[helper.domainName] = helper;
        }
      }
      storage.set({'helpers': cf.helpers});
    });
  },
  
  updateBlacklist: function() {
    remoteGet('http://couponfollow.com/files/addon/catc_blacklist.json', function(data) {
      cf.blacklist = {};
      for (var i = 0; i < data.blacklistDomains.length; i++) {
        var domain = data.blacklistDomains[i];
        cf.blacklist[domain] = "1";
      }
      storage.set({'blacklist': cf.blacklist});
    });
  }
};

setTimeout(function () { cf.init(); }, 1000);

function requestHandler(request, sender, sendResponse) {
  log('requestHandler: call = ' + request.call);
  if (request.call == "pasteCoupon") {
    pasteCoupon(request.arg);
  } else if (request.call == "cf") {
    sendResponse(cf);
  } else if (request.call == "markVisited") {
    markVisited(request.arg);
  } else if (request.call == "getHistory") {
    getHistory(request.arg, sendResponse);
  } else if (request.call == "getHighlight") {
    getHighlight(sendResponse);
  } else {
    sendResponse({});
  }
}

function pasteCoupon(data) {
  if (data.nt == 1) {
    chrome.tabs.create({
      url: 'http://couponfollow.com/code/go/' + data.id,
      active: false
    });
  }
  chrome.tabs.getSelected(null, function (tab) {
    chrome.tabs.sendMessage(tab.id, data);
  });
}

function markVisited(domain) {
  chrome.tabs.getSelected(null, function (tab) {
    if (cf.history[tab.id] == undefined) {
      cf.history[tab.id] = [];
    }
    if (!contains(cf.history[tab.id], domain)) {
      if (cf.history[tab.id].length == 3) {
        cf.history[tab.id].shift();
      }
      cf.history[tab.id].push(domain);
    }
  });
}

function getHistory(data, sendResponse) {
  chrome.tabs.getSelected(null, function (tab) {
    cf.history[tab.id].pop();
    var toSend = {
      history: cf.history[tab.id].join(','),
      point: data.point
    };
    sendResponse(toSend);
  });
}

function getHighlight(sendResponse) {
  if (localStorage.highlight == undefined) {
    localStorage.highlight = "true";
  }
  sendResponse({highlight: localStorage.highlight});
}