/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et: */
/* 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/. */

let mDBConn = DBConn();

function promiseOnClearHistoryObserved() {
  let deferred = Promise.defer();

  let historyObserver = {
    onBeginUpdateBatch: function() {},
    onEndUpdateBatch: function() {},
    onVisit: function() {},
    onTitleChanged: function() {},
    onBeforeDeleteURI: function() {},
    onDeleteURI: function(aURI) {},
    onPageChanged: function() {},
    onDeleteVisits: function() {},

    onClearHistory: function() {
      PlacesUtils.history.removeObserver(this, false);
      deferred.resolve();
    },

    QueryInterface: XPCOMUtils.generateQI([
      Ci.nsINavHistoryObserver,
    ])
  }
  PlacesUtils.history.addObserver(historyObserver, false);
  return deferred.promise;
}

// This global variable is a promise object, initialized in run_test and waited
// upon in the first asynchronous test.  It is resolved when the
// "places-init-complete" notification is received. We cannot initialize it in
// the asynchronous test, because then it's too late to register the observer.
let promiseInit;

function run_test() {
  // places-init-complete is notified after run_test, and it will
  // run a first frecency fix through async statements.
  // To avoid random failures we have to run after all of this.
  promiseInit = promiseTopicObserved(PlacesUtils.TOPIC_INIT_COMPLETE);

  run_next_test();
}

add_task(function test_history_removeAllPages()
{
  yield promiseInit;

  yield promiseAddVisits([
    { uri: uri("http://typed.mozilla.org/"),
      transition: TRANSITION_TYPED },
    { uri: uri("http://link.mozilla.org/"),
      transition: TRANSITION_LINK },
    { uri: uri("http://download.mozilla.org/"),
      transition: TRANSITION_DOWNLOAD },
    { uri: uri("http://redir_temp.mozilla.org/"),
      transition: TRANSITION_REDIRECT_TEMPORARY,
      referrer: "http://link.mozilla.org/"},
    { uri: uri("http://redir_perm.mozilla.org/"),
      transition: TRANSITION_REDIRECT_PERMANENT,
      referrer: "http://link.mozilla.org/"},
  ]);

  // add a place: bookmark
  PlacesUtils.bookmarks.insertBookmark(PlacesUtils.unfiledBookmarksFolderId,
                                       uri("place:folder=4"),
                                       PlacesUtils.bookmarks.DEFAULT_INDEX,
                                       "shortcut");

  // Add an expire never annotation
  // Actually expire never annotations are removed as soon as a page is removed
  // from the database, so this should act as a normal visit.
  PlacesUtils.annotations.setPageAnnotation(uri("http://download.mozilla.org/"),
                                            "never", "never", 0,
                                            PlacesUtils.annotations.EXPIRE_NEVER);

  // Add a bookmark
  // Bookmarked page should have history cleared and frecency = -old_visit_count
  PlacesUtils.bookmarks.insertBookmark(PlacesUtils.unfiledBookmarksFolderId,
                                       uri("http://typed.mozilla.org/"),
                                       PlacesUtils.bookmarks.DEFAULT_INDEX,
                                       "bookmark");

  yield promiseAddVisits([
    { uri: uri("http://typed.mozilla.org/"),
      transition: TRANSITION_BOOKMARK },
    { uri: uri("http://frecency.mozilla.org/"),
      transition: TRANSITION_LINK },
  ]);
  yield promiseAsyncUpdates();

  // Clear history and wait for the onClearHistory notification.
  let promiseWaitClearHistory = promiseOnClearHistoryObserved();
  PlacesUtils.bhistory.removeAllPages();
  yield promiseWaitClearHistory;

  // check browserHistory returns no entries
  do_check_eq(0, PlacesUtils.history.hasHistoryEntries);

  yield promiseTopicObserved(PlacesUtils.TOPIC_EXPIRATION_FINISHED);
  yield promiseAsyncUpdates();

  // Check that frecency for not cleared items (bookmarks) has been converted
  // to -MAX(visit_count, 1), so we will be able to recalculate frecency
  // starting from most frecent bookmarks.
  stmt = mDBConn.createStatement(
    "SELECT h.id FROM moz_places h WHERE h.frecency > 0 ");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  stmt = mDBConn.createStatement(
    "SELECT h.id FROM moz_places h WHERE h.frecency < 0 " +
      "AND EXISTS (SELECT id FROM moz_bookmarks WHERE fk = h.id) LIMIT 1");
  do_check_true(stmt.executeStep());
  stmt.finalize();

  // Check that all visit_counts have been brought to 0
  stmt = mDBConn.createStatement(
    "SELECT id FROM moz_places WHERE visit_count <> 0 LIMIT 1");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  // Check that history tables are empty
  stmt = mDBConn.createStatement(
    "SELECT * FROM (SELECT id FROM moz_historyvisits LIMIT 1)");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  // Check that all moz_places entries except bookmarks and place: have been removed
  stmt = mDBConn.createStatement(
    "SELECT h.id FROM moz_places h WHERE SUBSTR(h.url, 1, 6) <> 'place:' "+
      "AND NOT EXISTS (SELECT id FROM moz_bookmarks WHERE fk = h.id) LIMIT 1");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  // Check that we only have favicons for retained places
  stmt = mDBConn.createStatement(
    "SELECT f.id FROM moz_favicons f WHERE NOT EXISTS " +
      "(SELECT id FROM moz_places WHERE favicon_id = f.id) LIMIT 1");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  // Check that we only have annotations for retained places
  stmt = mDBConn.createStatement(
    "SELECT a.id FROM moz_annos a WHERE NOT EXISTS " +
      "(SELECT id FROM moz_places WHERE id = a.place_id) LIMIT 1");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  // Check that we only have inputhistory for retained places
  stmt = mDBConn.createStatement(
    "SELECT i.place_id FROM moz_inputhistory i WHERE NOT EXISTS " +
      "(SELECT id FROM moz_places WHERE id = i.place_id) LIMIT 1");
  do_check_false(stmt.executeStep());
  stmt.finalize();

  // Check that place:uris have frecency 0
  stmt = mDBConn.createStatement(
    "SELECT h.id FROM moz_places h " +
    "WHERE SUBSTR(h.url, 1, 6) = 'place:' AND h.frecency <> 0 LIMIT 1");
  do_check_false(stmt.executeStep());
  stmt.finalize();
});
