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// 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/media_galleries/fileapi/iphoto_data_provider.h"
#include <map>
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
#include "chrome/browser/media_galleries/fileapi/safe_iapps_library_parser.h"
namespace iphoto {
IPhotoDataProvider::IPhotoDataProvider(const base::FilePath& library_path)
: iapps::IAppsDataProvider(library_path),
weak_factory_(this) {}
IPhotoDataProvider::~IPhotoDataProvider() {}
void IPhotoDataProvider::DoParseLibrary(
const base::FilePath& library_path,
const ReadyCallback& ready_callback) {
xml_parser_ = new iapps::SafeIAppsLibraryParser;
xml_parser_->ParseIPhotoLibrary(
library_path,
base::Bind(&IPhotoDataProvider::OnLibraryParsed,
weak_factory_.GetWeakPtr(),
ready_callback));
}
void IPhotoDataProvider::OnLibraryParsed(const ReadyCallback& ready_callback,
bool result,
const parser::Library& library) {
DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
set_valid(result);
if (valid())
BuildIndices(library);
ready_callback.Run(valid());
}
void IPhotoDataProvider::BuildIndices(const parser::Library& library) {
typedef base::hash_map<uint64, const base::FilePath*> IdIndex;
IdIndex photo_id_index;
IdIndex originals_id_index;
for (std::set<parser::Photo>::const_iterator photo_it =
library.all_photos.begin();
photo_it != library.all_photos.end(); photo_it++) {
photo_id_index[photo_it->id] = &(photo_it->location);
if (!photo_it->original_location.empty())
originals_id_index[photo_it->id] = &(photo_it->original_location);
}
// Build up a set of IDs which have in-album duplicates.
// Those are the filenames we want to globally mangle.
std::set<uint64> dupe_ids;
for (parser::Albums::const_iterator album_it = library.albums.begin();
album_it != library.albums.end(); album_it++) {
const parser::Album& album = album_it->second;
std::set<std::string> album_paths;
for (parser::Album::const_iterator id_it = album.begin();
id_it != album.end(); id_it++) {
uint64 id = *id_it;
IdIndex::const_iterator photo_it = photo_id_index.find(id);
if (photo_it == photo_id_index.end())
continue;
std::string filename = photo_it->second->BaseName().value();
if (ContainsKey(album_paths, filename))
dupe_ids.insert(id);
else
album_paths.insert(filename);
}
}
// Now build the directory index.
dir_index_.clear();
originals_index_.clear();
for (parser::Albums::const_iterator album_it = library.albums.begin();
album_it != library.albums.end(); album_it++) {
std::string album_name = album_it->first;
const parser::Album& album = album_it->second;
for (parser::Album::const_iterator id_it = album.begin();
id_it != album.end(); id_it++) {
uint64 id = *id_it;
IdIndex::const_iterator photo_it = photo_id_index.find(id);
if (photo_it == photo_id_index.end())
continue;
base::FilePath path = *(photo_it->second);
std::string filename = path.BaseName().value();
if (ContainsKey(dupe_ids, id)) {
filename = path.BaseName().InsertBeforeExtension(
"(" + base::Uint64ToString(id) + ")").value();
}
dir_index_[album_name][filename] = path;
IdIndex::const_iterator original_it = originals_id_index.find(id);
if (original_it != originals_id_index.end())
originals_index_[album_name][filename] = *(original_it->second);
}
}
}
std::vector<std::string> IPhotoDataProvider::GetAlbumNames() const {
std::vector<std::string> names;
for (DirIndex::const_iterator dir_it = dir_index_.begin();
dir_it != dir_index_.end(); dir_it++) {
names.push_back(dir_it->first);
}
return names;
}
std::map<std::string, base::FilePath> IPhotoDataProvider::GetAlbumContents(
const std::string& album) const {
std::map<std::string, base::FilePath> locations;
DirIndex::const_iterator dir_it = dir_index_.find(album);
if (dir_it == dir_index_.end())
return locations;
for (FileIndex::const_iterator file_it = dir_it->second.begin();
file_it != dir_it->second.end(); file_it++) {
locations.insert(make_pair(file_it->first, file_it->second));
}
return locations;
}
base::FilePath IPhotoDataProvider::GetPhotoLocationInAlbum(
const std::string& album,
const std::string& filename) const {
DirIndex::const_iterator dir_it = dir_index_.find(album);
if (dir_it == dir_index_.end())
return base::FilePath();
FileIndex::const_iterator file_it = dir_it->second.find(filename);
if (file_it == dir_it->second.end())
return base::FilePath();
return file_it->second;
}
bool IPhotoDataProvider::HasOriginals(const std::string& album) const {
DirIndex::const_iterator originals_it = originals_index_.find(album);
return originals_it != originals_index_.end();
}
std::map<std::string, base::FilePath> IPhotoDataProvider::GetOriginals(
const std::string& album) const {
std::map<std::string, base::FilePath> locations;
DirIndex::const_iterator originals_it = originals_index_.find(album);
if (originals_it == originals_index_.end())
return locations;
for (FileIndex::const_iterator file_it = originals_it->second.begin();
file_it != originals_it->second.end(); file_it++) {
locations.insert(make_pair(file_it->first, file_it->second));
}
return locations;
}
base::FilePath IPhotoDataProvider::GetOriginalPhotoLocation(
const std::string& album,
const std::string& filename) const {
DirIndex::const_iterator originals_it = originals_index_.find(album);
if (originals_it == originals_index_.end())
return base::FilePath();
FileIndex::const_iterator file_it = originals_it->second.find(filename);
if (file_it == originals_it->second.end())
return base::FilePath();
return file_it->second;
}
} // namespace iphoto
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