/**
 * Provides infrastructure for automated formautofill components tests.
 */

/* exported getTempFile, loadFormAutofillContent, runHeuristicsTest, sinon,
 *          initProfileStorage, getSyncChangeCounter, objectMatches, bootstrapURI
 */

"use strict";

ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
ChromeUtils.import("resource://gre/modules/Services.jsm");
ChromeUtils.import("resource://gre/modules/NetUtil.jsm");
ChromeUtils.import("resource://gre/modules/ObjectUtils.jsm");
ChromeUtils.import("resource://gre/modules/FormLikeFactory.jsm");
ChromeUtils.import("resource://testing-common/FileTestUtils.jsm");
ChromeUtils.import("resource://testing-common/MockDocument.jsm");
ChromeUtils.import("resource://testing-common/TestUtils.jsm");

ChromeUtils.defineModuleGetter(this, "DownloadPaths",
                               "resource://gre/modules/DownloadPaths.jsm");
ChromeUtils.defineModuleGetter(this, "FileUtils",
                               "resource://gre/modules/FileUtils.jsm");

XPCOMUtils.defineLazyServiceGetter(this, "resProto",
                                   "@mozilla.org/network/protocol;1?name=resource",
                                   "nsISubstitutingProtocolHandler");

do_get_profile();

// ================================================
// Load mocking/stubbing library, sinon
// docs: http://sinonjs.org/releases/v2.3.2/
ChromeUtils.import("resource://gre/modules/Timer.jsm");
Services.scriptloader.loadSubScript("resource://testing-common/sinon-2.3.2.js", this);
/* globals sinon */
// ================================================

// Load our bootstrap extension manifest so we can access our chrome/resource URIs.
const EXTENSION_ID = "formautofill@mozilla.org";
let extensionDir = Services.dirsvc.get("GreD", Ci.nsIFile);
extensionDir.append("browser");
extensionDir.append("features");
extensionDir.append(EXTENSION_ID);
let bootstrapFile = extensionDir.clone();
bootstrapFile.append("bootstrap.js");
let bootstrapURI = Services.io.newFileURI(bootstrapFile).spec;
// If the unpacked extension doesn't exist, use the packed version.
if (!extensionDir.exists()) {
  extensionDir = extensionDir.parent;
  extensionDir.append(EXTENSION_ID + ".xpi");
  let jarURI = Services.io.newFileURI(extensionDir);
  bootstrapURI = "jar:" + jarURI.spec + "!/bootstrap.js";
}
Components.manager.addBootstrappedManifestLocation(extensionDir);

let resURI = Services.io.newURI("chrome/res/", null, Services.io.newURI(bootstrapURI));
resProto.setSubstitution("formautofill", resURI);

// Returns a reference to a temporary file that is guaranteed not to exist and
// is cleaned up later. See FileTestUtils.getTempFile for details.
function getTempFile(leafName) {
  return FileTestUtils.getTempFile(leafName);
}

async function initProfileStorage(fileName, records, collectionName = "addresses") {
  let {FormAutofillStorage} = ChromeUtils.import("resource://formautofill/FormAutofillStorage.jsm", {});
  let path = getTempFile(fileName).path;
  let profileStorage = new FormAutofillStorage(path);
  await profileStorage.initialize();

  if (!records || !Array.isArray(records)) {
    return profileStorage;
  }

  let onChanged = TestUtils.topicObserved(
    "formautofill-storage-changed",
    (subject, data) =>
      data == "add" &&
      subject.wrappedJSObject.collectionName == collectionName
  );
  for (let record of records) {
    Assert.ok(profileStorage[collectionName].add(record));
    await onChanged;
  }
  await profileStorage._saveImmediately();
  return profileStorage;
}

function verifySectionFieldDetails(sections, expectedResults) {
  Assert.equal(sections.length, expectedResults.length, "Expected section count.");
  sections.forEach((sectionInfo, sectionIndex) => {
    let expectedSectionInfo = expectedResults[sectionIndex];
    info("FieldName Prediction Results: " + sectionInfo.map(i => i.fieldName));
    info("FieldName Expected Results:   " + expectedSectionInfo.map(i => i.fieldName));
    Assert.equal(sectionInfo.length, expectedSectionInfo.length, "Expected field count.");

    sectionInfo.forEach((field, fieldIndex) => {
      let expectedField = expectedSectionInfo[fieldIndex];
      delete field._reason;
      delete field.elementWeakRef;
      Assert.deepEqual(field, expectedField);
    });
  });
}

function runHeuristicsTest(patterns, fixturePathPrefix) {
  ChromeUtils.import("resource://formautofill/FormAutofillHeuristics.jsm");
  ChromeUtils.import("resource://formautofill/FormAutofillUtils.jsm");

  patterns.forEach(testPattern => {
    add_task(async function() {
      info("Starting test fixture: " + testPattern.fixturePath);
      let file = do_get_file(fixturePathPrefix + testPattern.fixturePath);
      let doc = MockDocument.createTestDocumentFromFile("http://localhost:8080/test/", file);

      let forms = [];

      for (let field of FormAutofillUtils.autofillFieldSelector(doc)) {
        let formLike = FormLikeFactory.createFromField(field);
        if (!forms.some(form => form.rootElement === formLike.rootElement)) {
          forms.push(formLike);
        }
      }

      Assert.equal(forms.length, testPattern.expectedResult.length, "Expected form count.");

      forms.forEach((form, formIndex) => {
        let sections = FormAutofillHeuristics.getFormInfo(form);
        verifySectionFieldDetails(
          sections.map(section => section.fieldDetails),
          testPattern.expectedResult[formIndex],
        );
      });
    });
  });
}

/**
 * Returns the Sync change counter for a profile storage record. Synced records
 * store additional metadata for tracking changes and resolving merge conflicts.
 * Deleting a synced record replaces the record with a tombstone.
 *
 * @param   {AutofillRecords} records
 *          The `AutofillRecords` instance to query.
 * @param   {string} guid
 *          The GUID of the record or tombstone.
 * @returns {number}
 *          The change counter, or -1 if the record doesn't exist or hasn't
 *          been synced yet.
 */
function getSyncChangeCounter(records, guid) {
  let record = records._findByGUID(guid, {includeDeleted: true});
  if (!record) {
    return -1;
  }
  let sync = records._getSyncMetaData(record);
  if (!sync) {
    return -1;
  }
  return sync.changeCounter;
}

/**
 * Performs a partial deep equality check to determine if an object contains
 * the given fields.
 *
 * @param   {Object} object
 *          The object to check. Unlike `ObjectUtils.deepEqual`, properties in
 *          `object` that are not in `fields` will be ignored.
 * @param   {Object} fields
 *          The fields to match.
 * @returns {boolean}
 *          Does `object` contain `fields` with matching values?
 */
function objectMatches(object, fields) {
  let actual = {};
  for (let key in fields) {
    if (!object.hasOwnProperty(key)) {
      return false;
    }
    actual[key] = object[key];
  }
  return ObjectUtils.deepEqual(actual, fields);
}

add_task(async function head_initialize() {
  Services.prefs.setStringPref("extensions.formautofill.available", "on");
  Services.prefs.setBoolPref("extensions.formautofill.creditCards.available", true);
  Services.prefs.setBoolPref("extensions.formautofill.heuristics.enabled", true);
  Services.prefs.setBoolPref("extensions.formautofill.section.enabled", true);
  Services.prefs.setBoolPref("dom.forms.autocomplete.formautofill", true);

  // Clean up after every test.
  registerCleanupFunction(function head_cleanup() {
    Services.prefs.clearUserPref("extensions.formautofill.available");
    Services.prefs.clearUserPref("extensions.formautofill.creditCards.available");
    Services.prefs.clearUserPref("extensions.formautofill.heuristics.enabled");
    Services.prefs.clearUserPref("extensions.formautofill.section.enabled");
    Services.prefs.clearUserPref("dom.forms.autocomplete.formautofill");
  });
});
