/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

Components.utils.import("resource://gre/modules/osfile.jsm");

const kSelectedEnginePref = "browser.search.selectedEngine";

// Check that the default engine matches the defaultenginename pref
add_task(function* test_defaultEngine() {
  yield asyncInit();

  do_check_eq(Services.search.currentEngine.name, getDefaultEngineName());
});

// Giving prefs a user value shouldn't change the selected engine.
add_task(function* test_selectedEngine() {
  let defaultEngineName = getDefaultEngineName();
  // Test the selectedEngine pref.
  Services.prefs.setCharPref(kSelectedEnginePref, kTestEngineName);

  yield asyncReInit();
  do_check_eq(Services.search.currentEngine.name, defaultEngineName);

  Services.prefs.clearUserPref(kSelectedEnginePref);

  // Test the defaultenginename pref.
  Services.prefs.setCharPref(kDefaultenginenamePref, kTestEngineName);

  yield asyncReInit();
  do_check_eq(Services.search.currentEngine.name, defaultEngineName);

  Services.prefs.clearUserPref(kDefaultenginenamePref);
});

// Setting the search engine should be persisted across restarts.
add_task(function* test_persistAcrossRestarts() {
  // Set the engine through the API.
  Services.search.currentEngine = Services.search.getEngineByName(kTestEngineName);
  do_check_eq(Services.search.currentEngine.name, kTestEngineName);
  yield promiseAfterCache();

  // Check that the a hash was saved.
  let metadata = yield promiseGlobalMetadata();
  do_check_eq(metadata.hash.length, 44);

  // Re-init and check the engine is still the same.
  yield asyncReInit();
  do_check_eq(Services.search.currentEngine.name, kTestEngineName);

  // Cleanup (set the engine back to default).
  Services.search.resetToOriginalDefaultEngine();
  do_check_eq(Services.search.currentEngine.name, getDefaultEngineName());
});

// An engine set without a valid hash should be ignored.
add_task(function* test_ignoreInvalidHash() {
  // Set the engine through the API.
  Services.search.currentEngine = Services.search.getEngineByName(kTestEngineName);
  do_check_eq(Services.search.currentEngine.name, kTestEngineName);
  yield promiseAfterCache();

  // Then mess with the file (make the hash invalid).
  let metadata = yield promiseGlobalMetadata();
  metadata.hash = "invalid";
  yield promiseSaveGlobalMetadata(metadata);

  // Re-init the search service, and check that the json file is ignored.
  yield asyncReInit();
  do_check_eq(Services.search.currentEngine.name, getDefaultEngineName());
});

// Resetting the engine to the default should remove the saved value.
add_task(function* test_settingToDefault() {
  // Set the engine through the API.
  Services.search.currentEngine = Services.search.getEngineByName(kTestEngineName);
  do_check_eq(Services.search.currentEngine.name, kTestEngineName);
  yield promiseAfterCache();

  // Check that the current engine was saved.
  let metadata = yield promiseGlobalMetadata();
  do_check_eq(metadata.current, kTestEngineName);

  // Then set the engine back to the default through the API.
  Services.search.currentEngine =
    Services.search.getEngineByName(getDefaultEngineName());
  yield promiseAfterCache();

  // Check that the current engine is no longer saved in the JSON file.
  metadata = yield promiseGlobalMetadata();
  do_check_eq(metadata.current, "");
});

add_task(function* test_resetToOriginalDefaultEngine() {
  let defaultName = getDefaultEngineName();
  do_check_eq(Services.search.currentEngine.name, defaultName);

  Services.search.currentEngine =
    Services.search.getEngineByName(kTestEngineName);
  do_check_eq(Services.search.currentEngine.name, kTestEngineName);
  yield promiseAfterCache();

  Services.search.resetToOriginalDefaultEngine();
  do_check_eq(Services.search.currentEngine.name, defaultName);
  yield promiseAfterCache();
});

add_task(function* test_fallback_kept_after_restart() {
  // Set current engine to a default engine that isn't the original default.
  let builtInEngines = Services.search.getDefaultEngines();
  let defaultName = getDefaultEngineName();
  let nonDefaultBuiltInEngine;
  for (let engine of builtInEngines) {
    if (engine.name != defaultName) {
      nonDefaultBuiltInEngine = engine;
      break;
    }
  }
  Services.search.currentEngine = nonDefaultBuiltInEngine;
  do_check_eq(Services.search.currentEngine.name, nonDefaultBuiltInEngine.name);
  yield promiseAfterCache();

  // Remove that engine...
  Services.search.removeEngine(nonDefaultBuiltInEngine);
  // The engine being a default (built-in) one, it should be hidden
  // rather than actually removed.
  do_check_true(nonDefaultBuiltInEngine.hidden);

  // Using the currentEngine getter should force a fallback to the
  // original default engine.
  do_check_eq(Services.search.currentEngine.name, defaultName);

  // Restoring the default engines should unhide our built-in test
  // engine, but not change the value of currentEngine.
  Services.search.restoreDefaultEngines();
  do_check_false(nonDefaultBuiltInEngine.hidden);
  do_check_eq(Services.search.currentEngine.name, defaultName);
  yield promiseAfterCache();

  // After a restart, the currentEngine value should still be unchanged.
  yield asyncReInit();
  do_check_eq(Services.search.currentEngine.name, defaultName);
});


function run_test() {
  removeMetadata();
  removeCacheFile();

  do_check_false(Services.search.isInitialized);

  let engineDummyFile = gProfD.clone();
  engineDummyFile.append("searchplugins");
  engineDummyFile.append("test-search-engine.xml");
  let engineDir = engineDummyFile.parent;
  engineDir.create(Ci.nsIFile.DIRECTORY_TYPE, FileUtils.PERMS_DIRECTORY);

  do_get_file("data/engine.xml").copyTo(engineDir, "engine.xml");

  do_register_cleanup(function() {
    removeMetadata();
    removeCacheFile();
  });

  run_next_test();
}