/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

const Cu = Components.utils;
const Ci = Components.interfaces;
const Cc = Components.classes;

Cu.import("resource://testing-common/httpd.js");
Cu.import("resource://gre/modules/Services.jsm");

var httpserver;

function inChildProcess() {
  return Cc["@mozilla.org/xre/app-info;1"]
           .getService(Ci.nsIXULRuntime)
           .processType != Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT;  
}
function makeChan(path) {
  var ios = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
  var chan = ios.newChannel("http://localhost:4444/" + path, null, null)
                .QueryInterface(Ci.nsIHttpChannel);
  return chan;
}

function setup_chan(path, isPrivate, callback) {
  var chan = makeChan(path);
  chan.QueryInterface(Ci.nsIPrivateBrowsingChannel).setPrivate(isPrivate);
  chan.asyncOpen(new ChannelListener(callback), null);  
 }

function set_cookie(value, callback) {
  return setup_chan('set?cookie=' + value, false, callback);
}

function set_private_cookie(value, callback) {
  return setup_chan('set?cookie=' + value, true, callback);
}

function check_cookie_presence(value, isPrivate, expected, callback) {
  var chan = setup_chan('present?cookie=' + value.replace('=','|'), isPrivate, function(req) {
    req.QueryInterface(Ci.nsIHttpChannel);
    do_check_eq(req.responseStatus, expected ? 200 : 404);
    callback(req);
  });
}

function presentHandler(metadata, response) {
  var present = false;
  var match = /cookie=([^&]*)/.exec(metadata.queryString);
  if (match) {
    try {
      present = metadata.getHeader("Cookie").indexOf(match[1].replace("|","=")) != -1;
    } catch (x) {
    }
  }
  response.setStatusLine("1.0", present ? 200 : 404, "");
}

function setHandler(metadata, response) {
  response.setStatusLine("1.0", 200, "Cookie set");
  var match = /cookie=([^&]*)/.exec(metadata.queryString);
  if (match) {
    response.setHeader("Set-Cookie", match[1]);
  }
}

function run_test() {
  httpserver = new HttpServer();
  httpserver.registerPathHandler("/set", setHandler);
  httpserver.registerPathHandler("/present", presentHandler);
  httpserver.start(4444);
  
  do_test_pending();
  
  function check_cookie(req) {
    req.QueryInterface(Ci.nsIHttpChannel);
    do_check_eq(req.responseStatus, 200);
    try {
      do_check_true(req.getResponseHeader("Set-Cookie") != "", "expected a Set-Cookie header");
    } catch (x) {
      do_throw("missing Set-Cookie header");
    }

    runNextTest();
  }

  let tests = [];
  
  function runNextTest() {
    do_execute_soon(tests.shift());
  }
  
  tests.push(function() {
    set_cookie("C1=V1", check_cookie);
  });
  tests.push(function() {
    set_private_cookie("C2=V2", check_cookie);
  });
  tests.push(function() {
    // Check that the first cookie is present in a non-private request
    check_cookie_presence("C1=V1", false, true, runNextTest);
  });
  tests.push(function() {
    // Check that the second cookie is present in a private request
    check_cookie_presence("C2=V2", true, true, runNextTest);
  });
  tests.push(function() {
    // Check that the first cookie is not present in a private request
    check_cookie_presence("C1=V1", true, false, runNextTest);
  });
  tests.push(function() {
    // Check that the second cookie is not present in a non-private request
    check_cookie_presence("C2=V2", false, false, runNextTest);
  });

  // The following test only works in a non-e10s situation at the moment,
  // since the notification needs to run in the parent process but there is
  // no existing mechanism to make that happen.  
  if (!inChildProcess()) {
    tests.push(function() {
      // Simulate all private browsing instances being closed
      var obsvc = Cc["@mozilla.org/observer-service;1"].
        getService(Ci.nsIObserverService);
      obsvc.notifyObservers(null, "last-pb-context-exited", null);
      // Check that all private cookies are now unavailable in new private requests
      check_cookie_presence("C2=V2", true, false, runNextTest);
    });
  }
  
  tests.push(function() { httpserver.stop(do_test_finished); });
  
  runNextTest();
}