/*
 * Copyright 2012 The Closure Compiler Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.javascript.jscomp;

import static com.google.javascript.jscomp.JsMessage.Style.RELAX;

import com.google.javascript.jscomp.JsMessage.Style;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Test which checks that replacer works correctly.
 *
 * @author tbreisacher@google.com (Tyler Breisacher)
 */
@RunWith(JUnit4.class)
public final class ReplaceMessagesForChromeTest extends CompilerTestCase {

  private Style style = RELAX;

  @Override
  protected CompilerPass getProcessor(Compiler compiler) {
    return new ReplaceMessagesForChrome(compiler,
        new GoogleJsMessageIdGenerator(null), false, style);
  }

  @Override
  protected int getNumRepetitions() {
    // No longer valid on the second run.
    return 1;
  }

  @Override
  @Before
  public void setUp() throws Exception {
    super.setUp();
    style = RELAX;
  }

  @Test
  public void testReplaceSimpleMessage() {
    test(
        lines(
            "/** @desc A simple message. */\n", "var MSG_A = goog.getMsg('Hello world');"),
        lines(
            "/** @desc A simple message. */\n",
            "var MSG_A=chrome.i18n.getMessage('8660696502365331902');"));

    test(
        lines(
            "/** @desc A message attached to an object. */\n",
            "foo.bar.MSG_B = goog.getMsg('Goodbye world');"),
        lines(
            "/** @desc A message attached to an object. */\n",
            "foo.bar.MSG_B=chrome.i18n.getMessage('2356086230621084760');"));
  }

  @Test
  public void testReplaceSinglePlaceholder() {
    test(
        lines(
            "/** @desc A message with one placeholder. */\n",
            "var MSG_C = goog.getMsg('Hello, {$name}', {name: 'Tyler'});"),
        lines(
            "/** @desc A message with one placeholder. */\n",
            "var MSG_C=chrome.i18n.getMessage('4985325380591528435', ['Tyler']);"));
  }

  @Test
  public void testReplaceTwoPlaceholders() {
    test(
        lines(
            "/** @desc A message with two placeholders. */\n",
            "var MSG_D = goog.getMsg('{$greeting}, {$name}', ",
            "{greeting: 'Hi', name: 'Tyler'});"),
        lines(
            "/** @desc A message with two placeholders. */\n",
            "var MSG_D=chrome.i18n.getMessage('3605047247574980322', ",
            "['Hi', 'Tyler']);"));

    test(
        lines(
            "/** @desc A message with two placeholders, but their order is\n",
            " * reversed in the object literal. (Shouldn't make a difference.)\n",
            " */\n",
            "var MSG_E = goog.getMsg('{$greeting}, {$name}!', ",
            "{name: 'Tyler', greeting: 'Hi'});"),
        lines(
            "/** @desc A message with two placeholders, but their order is\n",
            " * reversed in the object literal. (Shouldn't make a difference.)\n",
            " */\n",
            "var MSG_E=chrome.i18n.getMessage('691522386483664339', ",
            "['Hi', 'Tyler']);"));
  }

  @Test
  public void testReplacePlaceholderMissingValue() {
    testError("/** @desc A message with two placeholders, but one is missing. */\n"
        + "var MSG_F = goog.getMsg('{$greeting}, {$name}!', {name: 'Tyler'});",
         JsMessageVisitor.MESSAGE_TREE_MALFORMED);
  }

  @Test
  public void testReplaceTwoPlaceholdersNonAlphaOrder() {
    test(
        lines(
            "/** @desc A message with two placeholders not in order .*/\n",
            "var MSG_G = goog.getMsg('{$name}: {$greeting}', ",
            "{greeting: 'Salutations', name: 'Tyler'});"),
        lines(
            "/** @desc A message with two placeholders not in order .*/\n",
            "var MSG_G=chrome.i18n.getMessage('7437383242562773138', ",
            "['Salutations', 'Tyler']);"));
  }

  @Test
  public void testReplaceSinglePlaceholderComputedProp() {
    testError(
        lines(
            "/** @desc A message with one placeholder. */\n",
            "var MSG_H = goog.getMsg('Hello, {$name}', {['name']: 'Tyler'});"),
        JsMessageVisitor.MESSAGE_TREE_MALFORMED);
  }

  @Test
  public void testReplaceSimpleMessageWithLet() {
    test(
        lines(
            "/** @desc A simple message. */\n",
            "let MSG_I = goog.getMsg('Hello world');"),
        lines(
            "/** @desc A simple message. */\n",
            "let MSG_I = chrome.i18n.getMessage('987871171253827787');"));
  }

  @Test
  public void testReplaceSimpleMessageWithConst() {
    test(
        lines(
            "/** @desc A simple message. */\n",
            "const MSG_J = goog.getMsg('Hello world');"),
        lines(
            "/** @desc A simple message. */\n",
            "const MSG_J =chrome.i18n.getMessage('3477894568604521782');"));
  }

  @Test
  public void testReplaceTemplatedMessage() {
    testError(
        lines(
            "const greeting = '{$greeting}'",
            "/** @desc A simple message */\n",
            "var MSG_K = goog.getMsg(`${greeting}, Tyler`, {greeting: 'Hello'});"),
        JsMessageVisitor.MESSAGE_TREE_MALFORMED);
  }

  @Test
  public void testReplaceExternalMessage() {
    test(
        lines(
            "/** @desc A message that was extracted with SoyMsgExtractor. */\n",
            "var MSG_EXTERNAL_1357902468 = goog.getMsg('Hello world');"),
        lines(
            "/** @desc A message that was extracted with SoyMsgExtractor. */\n",
            "var MSG_EXTERNAL_1357902468 = chrome.i18n.getMessage('1357902468');"));
  }

  /** Test that messages are handled correctly if they contain the same placeholder twice. */
  @Test
  public void testReplaceMessageWithDuplicatePlaceholders() {
    test(
        lines(
            "/** @desc A message that contains two instances of the same placeholder. */\n",
            "var MSG_EXTERNAL_987654321 = goog.getMsg(",
            "'{$startDiv_1}You are signed in as{$endDiv}{$img}{$startDiv_2}{$name}{$endDiv}',",
            "{'startDiv_1': '<div>',",
            "'endDiv': '</div>',",
            "'img': '<img src=\"http://example.com/photo.png\">',",
            "'startDiv_2': '<div class=\"name\">',",
            "'name': name});"),
        lines(
            "/** @desc A message that contains two instances of the same placeholder. */\n",
            "var MSG_EXTERNAL_987654321 = chrome.i18n.getMessage('987654321', ",
            "[",
            "'</div>', ", // endDiv, only included once even though it appears twice in the message.
            "'<img src=\"http://example.com/photo.png\">', ", // img
            "name, ", // name
            "'<div>', ", // startDiv_1
            "'<div class=\"name\">'", // startDiv_2
            "]);"));
  }
}