// 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/ui/bookmarks/bookmark_editor.h"

#include "base/logging.h"
#include "grit/generated_resources.h"

namespace {

const BookmarkNode* CreateNewNode(BookmarkModel* model,
                                  const BookmarkNode* parent,
                                  const BookmarkEditor::EditDetails& details,
                                  const base::string16& new_title,
                                  const GURL& new_url) {
  const BookmarkNode* node;
  // When create the new one to right-clicked folder, add it to the next to the
  // folder's position. Because |details.index| has a index of the folder when
  // it was right-clicked, it might cause out of range exception when another
  // bookmark manager edits contents of the folder.
  // So we must check the range.
  int child_count = parent->child_count();
  int insert_index = (parent == details.parent_node && details.index >= 0 &&
                      details.index <= child_count) ?
                      details.index : child_count;
  if (details.type == BookmarkEditor::EditDetails::NEW_URL) {
    node = model->AddURL(parent, insert_index, new_title, new_url);
  } else if (details.type == BookmarkEditor::EditDetails::NEW_FOLDER) {
    node = model->AddFolder(parent, insert_index, new_title);
    for (size_t i = 0; i < details.urls.size(); ++i) {
      model->AddURL(node, node->child_count(), details.urls[i].second,
                    details.urls[i].first);
    }
    model->SetDateFolderModified(parent, base::Time::Now());
  } else {
    NOTREACHED();
    return NULL;
  }

  return node;
}

}  // namespace

BookmarkEditor::EditDetails::EditDetails(Type node_type)
    : type(node_type), existing_node(NULL), parent_node(NULL), index(-1) {
}

BookmarkNode::Type BookmarkEditor::EditDetails::GetNodeType() const {
  BookmarkNode::Type node_type = BookmarkNode::URL;
  switch (type) {
    case EXISTING_NODE:
      node_type = existing_node->type();
      break;
    case NEW_URL:
      node_type = BookmarkNode::URL;
      break;
    case NEW_FOLDER:
      node_type = BookmarkNode::FOLDER;
      break;
    default:
      NOTREACHED();
  }
  return node_type;
}

int BookmarkEditor::EditDetails::GetWindowTitleId() const {
  int dialog_title = IDS_BOOKMARK_EDITOR_TITLE;
  switch (type) {
    case EditDetails::EXISTING_NODE:
    case EditDetails::NEW_URL:
      dialog_title = (type == EditDetails::EXISTING_NODE &&
                      existing_node->type() == BookmarkNode::FOLDER) ?
          IDS_BOOKMARK_FOLDER_EDITOR_WINDOW_TITLE :
          IDS_BOOKMARK_EDITOR_TITLE;
      break;
    case EditDetails::NEW_FOLDER:
      dialog_title = urls.empty() ?
          IDS_BOOKMARK_FOLDER_EDITOR_WINDOW_TITLE_NEW :
          IDS_BOOKMARK_ALL_TABS_DIALOG_TITLE;
      break;
    default:
      NOTREACHED();
  }
  return dialog_title;
}

BookmarkEditor::EditDetails BookmarkEditor::EditDetails::EditNode(
    const BookmarkNode* node) {
  EditDetails details(EXISTING_NODE);
  details.existing_node = node;
  if (node)
    details.parent_node = node->parent();
  return details;
}

BookmarkEditor::EditDetails BookmarkEditor::EditDetails::AddNodeInFolder(
    const BookmarkNode* parent_node,
    int index,
    const GURL& url,
    const string16& title) {
  EditDetails details(NEW_URL);
  details.parent_node = parent_node;
  details.index = index;
  details.url = url;
  details.title = title;
  return details;
}

BookmarkEditor::EditDetails BookmarkEditor::EditDetails::AddFolder(
    const BookmarkNode* parent_node,
    int index) {
  EditDetails details(NEW_FOLDER);
  details.parent_node = parent_node;
  details.index = index;
  return details;
}

BookmarkEditor::EditDetails::~EditDetails() {}

// static
const BookmarkNode* BookmarkEditor::ApplyEditsWithNoFolderChange(
    BookmarkModel* model,
    const BookmarkNode* parent,
    const EditDetails& details,
    const base::string16& new_title,
    const GURL& new_url) {
  if (details.type == EditDetails::NEW_URL ||
      details.type == EditDetails::NEW_FOLDER) {
    return CreateNewNode(model, parent, details, new_title, new_url);
  }

  const BookmarkNode* node = details.existing_node;
  DCHECK(node);

  if (node->is_url())
    model->SetURL(node, new_url);
  model->SetTitle(node, new_title);

  return node;
}

// static
const BookmarkNode* BookmarkEditor::ApplyEditsWithPossibleFolderChange(
    BookmarkModel* model,
    const BookmarkNode* new_parent,
    const EditDetails& details,
    const base::string16& new_title,
    const GURL& new_url) {
  if (details.type == EditDetails::NEW_URL ||
      details.type == EditDetails::NEW_FOLDER) {
    return CreateNewNode(model, new_parent, details, new_title, new_url);
  }

  const BookmarkNode* node = details.existing_node;
  DCHECK(node);

  if (new_parent != node->parent())
    model->Move(node, new_parent, new_parent->child_count());
  if (node->is_url())
    model->SetURL(node, new_url);
  model->SetTitle(node, new_title);

  return node;
}