/* -*- indent-tabs-mode: nil; js-indent-level: 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/. */

/**
 * Tests the following bugs:
 *
 * Bug 443745 - View>Sort>of "alpha" sort items is default to Z>A instead of A>Z
 * https://bugzilla.mozilla.org/show_bug.cgi?id=443745
 *
 * Bug 444179 - Library>Views>Sort>Sort by Tags does nothing
 * https://bugzilla.mozilla.org/show_bug.cgi?id=444179
 *
 * Basically, fully tests sorting the placeContent tree in the Places Library
 * window.  Sorting is verified by comparing the nsINavHistoryResult returned by
 * placeContent.result to the expected sort values.
 */

// Two properties of nsINavHistoryResult control the sort of the tree:
// sortingMode.  sortingMode's value is one of the
// nsINavHistoryQueryOptions.SORT_BY_* constants.
//
// This lookup table maps the possible values of anonid's of the treecols to
// objects that represent the treecols' correct state after the user sorts the
// previously unsorted tree by selecting a column from the Views > Sort menu.
// sortingMode is constructed from the key and dir properties (i.e.,
// SORT_BY_<key>_<dir>).
const SORT_LOOKUP_TABLE = {
  title: { key: "TITLE", dir: "ASCENDING" },
  tags: { key: "TAGS", dir: "ASCENDING" },
  url: { key: "URI", dir: "ASCENDING" },
  date: { key: "DATE", dir: "DESCENDING" },
  visitCount: { key: "VISITCOUNT", dir: "DESCENDING" },
  dateAdded: { key: "DATEADDED", dir: "DESCENDING" },
  lastModified: { key: "LASTMODIFIED", dir: "DESCENDING" },
};

// This is the column that's sorted if one is not specified and the tree is
// currently unsorted.  Set it to a key substring in the name of one of the
// nsINavHistoryQueryOptions.SORT_BY_* constants, e.g., "TITLE", "URI".
// Method ViewMenu.setSortColumn in browser/components/places/content/places.js
// determines this value.
const DEFAULT_SORT_KEY = "TITLE";

// Part of the test is checking that sorts stick, so each time we sort we need
// to remember it.
var prevSortDir = null;
var prevSortKey = null;

/**
 * Ensures that the sort of aTree is aSortingMode
 *
 * @param {object} aTree
 *        the tree to check
 * @param {Ci.nsINavHistoryQueryOptions} aSortingMode
 *        one of the Ci.nsINavHistoryQueryOptions.SORT_BY_* constants
 */
function checkSort(aTree, aSortingMode) {
  // The placeContent tree's sort is determined by the nsINavHistoryResult it
  // stores.  Get it and check that the sort is what the caller expects.
  let res = aTree.result;
  isnot(res, null, "sanity check: placeContent.result should not return null");

  // Check sortingMode.
  is(
    res.sortingMode,
    aSortingMode,
    "column should now have sortingMode " + aSortingMode
  );
}

/**
 * Sets the sort of aTree.
 *
 * @param {object} aOrganizerWin
 *        the Places window
 * @param {object} aTree
 *        the tree to sort
 * @param {boolean} aUnsortFirst
 *        true if the sort should be set to SORT_BY_NONE before sorting by aCol
 *        and aDir
 * @param {boolean} aShouldFail
 *        true if setSortColumn should fail on aCol or aDir
 * @param {object} aCol
 *        the column of aTree by which to sort
 * @param {string} aDir
 *        either "ascending" or "descending"
 */
function setSort(aOrganizerWin, aTree, aUnsortFirst, aShouldFail, aCol, aDir) {
  if (aUnsortFirst) {
    aOrganizerWin.ViewMenu.setSortColumn();
    checkSort(aTree, Ci.nsINavHistoryQueryOptions.SORT_BY_NONE, "");

    // Remember the sort key and direction.
    prevSortKey = null;
    prevSortDir = null;
  }

  let failed = false;
  try {
    aOrganizerWin.ViewMenu.setSortColumn(aCol, aDir);

    // Remember the sort key and direction.
    if (!aCol && !aDir) {
      prevSortKey = null;
      prevSortDir = null;
    } else {
      if (aCol) {
        prevSortKey = SORT_LOOKUP_TABLE[aCol.getAttribute("anonid")].key;
      } else if (prevSortKey === null) {
        prevSortKey = DEFAULT_SORT_KEY;
      }

      if (aDir) {
        prevSortDir = aDir.toUpperCase();
      } else if (prevSortDir === null) {
        prevSortDir = SORT_LOOKUP_TABLE[aCol.getAttribute("anonid")].dir;
      }
    }
  } catch (exc) {
    failed = true;
  }

  is(
    failed,
    !!aShouldFail,
    "setSortColumn on column " +
      (aCol ? aCol.getAttribute("anonid") : "(no column)") +
      " with direction " +
      (aDir || "(no direction)") +
      " and table previously " +
      (aUnsortFirst ? "unsorted" : "sorted") +
      " should " +
      (aShouldFail ? "" : "not ") +
      "fail"
  );
}

/**
 * Tries sorting by an invalid column and sort direction.
 *
 * @param {object} aOrganizerWin
 *        the Places window
 * @param {object} aPlaceContentTree
 *        the placeContent tree in aOrganizerWin
 */
function testInvalid(aOrganizerWin, aPlaceContentTree) {
  // Invalid column should fail by throwing an exception.
  let bogusCol = document.createXULElement("treecol");
  bogusCol.setAttribute("anonid", "bogusColumn");
  setSort(aOrganizerWin, aPlaceContentTree, true, true, bogusCol, "ascending");

  // Invalid direction reverts to SORT_BY_NONE.
  setSort(aOrganizerWin, aPlaceContentTree, false, false, null, "bogus dir");
  checkSort(aPlaceContentTree, Ci.nsINavHistoryQueryOptions.SORT_BY_NONE, "");
}

/**
 * Tests sorting aPlaceContentTree by column only and then by both column
 * and direction.
 *
 * @param {object} aOrganizerWin
 *        the Places window
 * @param {object} aPlaceContentTree
 *        the placeContent tree in aOrganizerWin
 * @param {boolean} aUnsortFirst
 *        true if, before each sort we try, we should sort to SORT_BY_NONE
 */
function testSortByColAndDir(aOrganizerWin, aPlaceContentTree, aUnsortFirst) {
  let cols = aPlaceContentTree.getElementsByTagName("treecol");
  ok(!!cols.length, "sanity check: placeContent should contain columns");

  for (let i = 0; i < cols.length; i++) {
    let col = cols.item(i);
    ok(
      col.hasAttribute("anonid"),
      "sanity check: column " + col.id + " should have anonid"
    );

    let colId = col.getAttribute("anonid");
    ok(
      colId in SORT_LOOKUP_TABLE,
      "sanity check: unexpected placeContent column anonid"
    );

    let sortStr =
      "SORT_BY_" +
      SORT_LOOKUP_TABLE[colId].key +
      "_" +
      (aUnsortFirst ? SORT_LOOKUP_TABLE[colId].dir : prevSortDir);
    let expectedSortMode = Ci.nsINavHistoryQueryOptions[sortStr];

    // Test sorting by only a column.
    setSort(aOrganizerWin, aPlaceContentTree, aUnsortFirst, false, col);
    checkSort(aPlaceContentTree, expectedSortMode);

    // Test sorting by both a column and a direction.
    ["ascending", "descending"].forEach(function (dir) {
      sortStr =
        "SORT_BY_" + SORT_LOOKUP_TABLE[colId].key + "_" + dir.toUpperCase();
      expectedSortMode = Ci.nsINavHistoryQueryOptions[sortStr];
      setSort(aOrganizerWin, aPlaceContentTree, aUnsortFirst, false, col, dir);
      checkSort(aPlaceContentTree, expectedSortMode);
    });
  }
}

/**
 * Tests sorting aPlaceContentTree by direction only.
 *
 * @param {object} aOrganizerWin
 *        the Places window
 * @param {object} aPlaceContentTree
 *        the placeContent tree in aOrganizerWin
 * @param {boolean} aUnsortFirst
 *        true if, before each sort we try, we should sort to SORT_BY_NONE
 */
function testSortByDir(aOrganizerWin, aPlaceContentTree, aUnsortFirst) {
  ["ascending", "descending"].forEach(function (dir) {
    let key = aUnsortFirst ? DEFAULT_SORT_KEY : prevSortKey;
    let sortStr = "SORT_BY_" + key + "_" + dir.toUpperCase();
    let expectedSortMode = Ci.nsINavHistoryQueryOptions[sortStr];
    setSort(aOrganizerWin, aPlaceContentTree, aUnsortFirst, false, null, dir);
    checkSort(aPlaceContentTree, expectedSortMode, "");
  });
}

function test() {
  waitForExplicitFinish();

  openLibrary(function (win) {
    let tree = win.document.getElementById("placeContent");
    isnot(tree, null, "sanity check: placeContent tree should exist");
    // Run the tests.
    testSortByColAndDir(win, tree, true);
    testSortByColAndDir(win, tree, false);
    testSortByDir(win, tree, true);
    testSortByDir(win, tree, false);
    testInvalid(win, tree);
    // Reset the sort to SORT_BY_NONE.
    setSort(win, tree, false, false);
    // Close the window and finish.
    win.close();
    finish();
  });
}