// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/importer/bookmark_html_reader.h"

#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/path_service.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/importer/imported_bookmark_entry.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace bookmark_html_reader {

TEST(BookmarkHTMLReaderTest, ParseTests) {
  bool result;

  // Tests charset.
  std::string charset;
  result = internal::ParseCharsetFromLine(
      "<META HTTP-EQUIV=\"Content-Type\" "
      "CONTENT=\"text/html; charset=UTF-8\">",
      &charset);
  EXPECT_TRUE(result);
  EXPECT_EQ("UTF-8", charset);

  // Escaped characters in name.
  base::string16 folder_name;
  bool is_toolbar_folder;
  base::Time folder_add_date;
  result = internal::ParseFolderNameFromLine(
      "<DT><H3 ADD_DATE=\"1207558707\" >&lt; &gt;"
      " &amp; &quot; &#39; \\ /</H3>",
      charset, &folder_name, &is_toolbar_folder, &folder_add_date);
  EXPECT_TRUE(result);
  EXPECT_EQ(ASCIIToUTF16("< > & \" ' \\ /"), folder_name);
  EXPECT_FALSE(is_toolbar_folder);
  EXPECT_TRUE(base::Time::FromTimeT(1207558707) == folder_add_date);

  // Empty name and toolbar folder attribute.
  result = internal::ParseFolderNameFromLine(
      "<DT><H3 PERSONAL_TOOLBAR_FOLDER=\"true\"></H3>",
      charset, &folder_name, &is_toolbar_folder, &folder_add_date);
  EXPECT_TRUE(result);
  EXPECT_EQ(base::string16(), folder_name);
  EXPECT_TRUE(is_toolbar_folder);

  // Unicode characters in title and shortcut.
  base::string16 title;
  GURL url, favicon;
  base::string16 shortcut;
  base::string16 post_data;
  base::Time add_date;
  result = internal::ParseBookmarkFromLine(
      "<DT><A HREF=\"http://chinese.site.cn/path?query=1#ref\" "
      "SHORTCUTURL=\"\xE4\xB8\xAD\">\xE4\xB8\xAD\xE6\x96\x87</A>",
      charset, &title, &url, &favicon, &shortcut, &add_date, &post_data);
  EXPECT_TRUE(result);
  EXPECT_EQ(L"\x4E2D\x6587", UTF16ToWide(title));
  EXPECT_EQ("http://chinese.site.cn/path?query=1#ref", url.spec());
  EXPECT_EQ(L"\x4E2D", UTF16ToWide(shortcut));
  EXPECT_EQ(base::string16(), post_data);
  EXPECT_TRUE(base::Time() == add_date);

  // No shortcut, and url contains %22 ('"' character).
  result = internal::ParseBookmarkFromLine(
      "<DT><A HREF=\"http://domain.com/?q=%22<>%22\">name</A>",
      charset, &title, &url, &favicon, &shortcut, &add_date, &post_data);
  EXPECT_TRUE(result);
  EXPECT_EQ(ASCIIToUTF16("name"), title);
  EXPECT_EQ("http://domain.com/?q=%22%3C%3E%22", url.spec());
  EXPECT_EQ(base::string16(), shortcut);
  EXPECT_EQ(base::string16(), post_data);
  EXPECT_TRUE(base::Time() == add_date);

  result = internal::ParseBookmarkFromLine(
      "<DT><A HREF=\"http://domain.com/?g=&quot;\"\">name</A>",
      charset, &title, &url, &favicon, &shortcut, &add_date, &post_data);
  EXPECT_TRUE(result);
  EXPECT_EQ(ASCIIToUTF16("name"), title);
  EXPECT_EQ("http://domain.com/?g=%22", url.spec());
  EXPECT_EQ(base::string16(), shortcut);
  EXPECT_EQ(base::string16(), post_data);
  EXPECT_TRUE(base::Time() == add_date);

  // Creation date.
  result = internal::ParseBookmarkFromLine(
      "<DT><A HREF=\"http://site/\" ADD_DATE=\"1121301154\">name</A>",
      charset, &title, &url, &favicon, &shortcut, &add_date, &post_data);
  EXPECT_TRUE(result);
  EXPECT_EQ(ASCIIToUTF16("name"), title);
  EXPECT_EQ(GURL("http://site/"), url);
  EXPECT_EQ(base::string16(), shortcut);
  EXPECT_EQ(base::string16(), post_data);
  EXPECT_TRUE(base::Time::FromTimeT(1121301154) == add_date);

  // Post-data
  result = internal::ParseBookmarkFromLine(
      "<DT><A HREF=\"http://localhost:8080/test/hello.html\" ADD_DATE=\""
      "1212447159\" LAST_VISIT=\"1212447251\" LAST_MODIFIED=\"1212447248\""
      "SHORTCUTURL=\"post\" ICON=\"data:\" POST_DATA=\"lname%3D%25s\""
      "LAST_CHARSET=\"UTF-8\" ID=\"rdf:#$weKaR3\">Test Post keyword</A>",
      charset, &title, &url, &favicon, &shortcut, &add_date, &post_data);
  EXPECT_TRUE(result);
  EXPECT_EQ(ASCIIToUTF16("Test Post keyword"), title);
  EXPECT_EQ("http://localhost:8080/test/hello.html", url.spec());
  EXPECT_EQ(ASCIIToUTF16("post"), shortcut);
  EXPECT_EQ(ASCIIToUTF16("lname%3D%25s"), post_data);
  EXPECT_TRUE(base::Time::FromTimeT(1212447159) == add_date);

  // Invalid case.
  result = internal::ParseBookmarkFromLine(
      "<DT><A HREF=\"http://domain.com/?q=%22",
      charset, &title, &url, &favicon, &shortcut, &add_date, &post_data);
  EXPECT_FALSE(result);
  EXPECT_EQ(base::string16(), title);
  EXPECT_EQ("", url.spec());
  EXPECT_EQ(base::string16(), shortcut);
  EXPECT_EQ(base::string16(), post_data);
  EXPECT_TRUE(base::Time() == add_date);

  // Epiphany format.
  result = internal::ParseMinimumBookmarkFromLine(
      "<dt><a href=\"http://www.google.com/\">Google</a></dt>",
      charset, &title, &url);
  EXPECT_TRUE(result);
  EXPECT_EQ(ASCIIToUTF16("Google"), title);
  EXPECT_EQ("http://www.google.com/", url.spec());
}

namespace {

void ExpectFirstFirefox2Bookmark(const ImportedBookmarkEntry& entry) {
  EXPECT_EQ(ASCIIToUTF16("Empty"), entry.title);
  EXPECT_TRUE(entry.is_folder);
  EXPECT_EQ(base::Time::FromTimeT(1295938143), entry.creation_time);
  EXPECT_EQ(1U, entry.path.size());
  if (entry.path.size() == 1)
    EXPECT_EQ(ASCIIToUTF16("Empty's Parent"), entry.path.front());
}

void ExpectSecondFirefox2Bookmark(const ImportedBookmarkEntry& entry) {
  EXPECT_EQ(ASCIIToUTF16("[Tamura Yukari.com]"), entry.title);
  EXPECT_FALSE(entry.is_folder);
  EXPECT_EQ(base::Time::FromTimeT(1234567890), entry.creation_time);
  EXPECT_EQ(1U, entry.path.size());
  if (entry.path.size() == 1)
    EXPECT_EQ(ASCIIToUTF16("Not Empty"), entry.path.front());
  EXPECT_EQ("http://www.tamurayukari.com/", entry.url.spec());
}

void ExpectThirdFirefox2Bookmark(const ImportedBookmarkEntry& entry) {
  EXPECT_EQ(ASCIIToUTF16("Google"), entry.title);
  EXPECT_FALSE(entry.is_folder);
  EXPECT_EQ(base::Time::FromTimeT(0000000000), entry.creation_time);
  EXPECT_EQ(1U, entry.path.size());
  if (entry.path.size() == 1)
    EXPECT_EQ(ASCIIToUTF16("Not Empty But Default"), entry.path.front());
  EXPECT_EQ("http://www.google.com/", entry.url.spec());
}

void ExpectFirstEpiphanyBookmark(const ImportedBookmarkEntry& entry) {
  EXPECT_EQ(ASCIIToUTF16("[Tamura Yukari.com]"), entry.title);
  EXPECT_EQ("http://www.tamurayukari.com/", entry.url.spec());
  EXPECT_EQ(0U, entry.path.size());
}

void ExpectSecondEpiphanyBookmark(const ImportedBookmarkEntry& entry) {
  EXPECT_EQ(ASCIIToUTF16("Google"), entry.title);
  EXPECT_EQ("http://www.google.com/", entry.url.spec());
  EXPECT_EQ(0U, entry.path.size());
}

}  // namespace

TEST(BookmarkHTMLReaderTest, Firefox2BookmarkFileImport) {
  base::FilePath path;
  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &path));
  path = path.AppendASCII("bookmark_html_reader");
  path = path.AppendASCII("firefox2.html");

  std::vector<ImportedBookmarkEntry> bookmarks;
  ImportBookmarksFile(base::Callback<bool(void)>(),
                      base::Callback<bool(const GURL&)>(),
                      path, &bookmarks, NULL);

  ASSERT_EQ(3U, bookmarks.size());
  ExpectFirstFirefox2Bookmark(bookmarks[0]);
  ExpectSecondFirefox2Bookmark(bookmarks[1]);
  ExpectThirdFirefox2Bookmark(bookmarks[2]);
}

TEST(BookmarkHTMLReaderTest, EpiphanyBookmarkFileImport) {
  base::FilePath path;
  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &path));
  path = path.AppendASCII("bookmark_html_reader");
  path = path.AppendASCII("epiphany.html");

  std::vector<ImportedBookmarkEntry> bookmarks;
  ImportBookmarksFile(base::Callback<bool(void)>(),
                      base::Callback<bool(const GURL&)>(),
                      path, &bookmarks, NULL);

  ASSERT_EQ(2U, bookmarks.size());
  ExpectFirstEpiphanyBookmark(bookmarks[0]);
  ExpectSecondEpiphanyBookmark(bookmarks[1]);
}

namespace {

class CancelAfterFifteenCalls {
  int count;
 public:
  CancelAfterFifteenCalls() : count(0) { }
  bool ShouldCancel() {
    return ++count > 16;
  }
};

}  // namespace

TEST(BookmarkHTMLReaderTest, CancellationCallback) {
  base::FilePath path;
  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &path));
  path = path.AppendASCII("bookmark_html_reader");
  // Use a file for testing that has multiple bookmarks.
  path = path.AppendASCII("firefox2.html");

  std::vector<ImportedBookmarkEntry> bookmarks;
  CancelAfterFifteenCalls cancel_fifteen;
  ImportBookmarksFile(base::Bind(&CancelAfterFifteenCalls::ShouldCancel,
                                 base::Unretained(&cancel_fifteen)),
                      base::Callback<bool(const GURL&)>(),
                      path, &bookmarks, NULL);

  // The cancellation callback is checked before each line is read, so fifteen
  // lines are imported. The first fifteen lines of firefox2.html include only
  // one bookmark.
  ASSERT_EQ(1U, bookmarks.size());
  ExpectFirstFirefox2Bookmark(bookmarks[0]);
}

namespace {

bool IsURLValid(const GURL& url) {
  // No offense to whomever owns this domain...
  return !url.DomainIs("tamurayukari.com");
}

}  // namespace

TEST(BookmarkHTMLReaderTest, ValidURLCallback) {
  base::FilePath path;
  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &path));
  path = path.AppendASCII("bookmark_html_reader");
  // Use a file for testing that has multiple bookmarks.
  path = path.AppendASCII("firefox2.html");

  std::vector<ImportedBookmarkEntry> bookmarks;
  ImportBookmarksFile(base::Callback<bool(void)>(),
                      base::Bind(&IsURLValid),
                      path, &bookmarks, NULL);

  ASSERT_EQ(2U, bookmarks.size());
  ExpectFirstFirefox2Bookmark(bookmarks[0]);
  ExpectThirdFirefox2Bookmark(bookmarks[1]);
}

}  // namespace bookmark_html_reader