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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/quick_pair/repository/fast_pair/device_image_store.h"
#include "ash/quick_pair/proto/fastpair.pb.h"
#include "ash/quick_pair/proto/fastpair_data.pb.h"
#include "ash/quick_pair/repository/fast_pair/fast_pair_image_decoder.h"
#include "ash/shell.h"
#include "base/values.h"
#include "chromeos/ash/services/bluetooth_config/public/cpp/device_image_info.h"
#include "components/cross_device/logging/logging.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "ui/base/webui/web_ui_util.h"
#include "url/gurl.h"
namespace ash::quick_pair {
// Alias DeviceImageInfo for convenience.
using bluetooth_config::DeviceImageInfo;
// static
constexpr char DeviceImageStore::kDeviceImageStorePref[];
// static
void DeviceImageStore::RegisterLocalStatePrefs(PrefRegistrySimple* registry) {
registry->RegisterDictionaryPref(kDeviceImageStorePref);
}
DeviceImageStore::DeviceImageStore(FastPairImageDecoder* image_decoder)
: image_decoder_(image_decoder) {}
DeviceImageStore::~DeviceImageStore() = default;
void DeviceImageStore::FetchDeviceImages(
const std::string& model_id,
DeviceMetadata* device_metadata,
FetchDeviceImagesCallback on_images_saved_callback) {
DCHECK(device_metadata);
DeviceImageInfo& images = model_id_to_images_[model_id];
if (images.default_image().empty() && !device_metadata->image().IsEmpty()) {
SaveImageAsBase64(model_id, DeviceImageType::kDefault,
on_images_saved_callback, device_metadata->image());
} else {
on_images_saved_callback.Run(std::make_pair(
DeviceImageType::kDefault, FetchDeviceImagesResult::kSkipped));
}
nearby::fastpair::TrueWirelessHeadsetImages true_wireless_images =
device_metadata->GetDetails().true_wireless_images();
if (images.left_bud_image().empty() &&
true_wireless_images.has_left_bud_url()) {
DecodeImage(model_id, DeviceImageType::kLeftBud,
true_wireless_images.left_bud_url(), on_images_saved_callback);
} else {
on_images_saved_callback.Run(std::make_pair(
DeviceImageType::kLeftBud, FetchDeviceImagesResult::kSkipped));
}
if (images.right_bud_image().empty() &&
true_wireless_images.has_right_bud_url()) {
DecodeImage(model_id, DeviceImageType::kRightBud,
true_wireless_images.right_bud_url(), on_images_saved_callback);
} else {
on_images_saved_callback.Run(std::make_pair(
DeviceImageType::kRightBud, FetchDeviceImagesResult::kSkipped));
}
if (images.case_image().empty() && true_wireless_images.has_case_url()) {
DecodeImage(model_id, DeviceImageType::kCase,
true_wireless_images.case_url(), on_images_saved_callback);
} else {
on_images_saved_callback.Run(std::make_pair(
DeviceImageType::kCase, FetchDeviceImagesResult::kSkipped));
}
}
bool DeviceImageStore::PersistDeviceImages(const std::string& model_id) {
DeviceImageInfo& images = model_id_to_images_[model_id];
if (!DeviceImageInfoHasImages(images)) {
CD_LOG(WARNING, Feature::FP)
<< __func__
<< ": Attempted to persist non-existent images for model ID: " +
model_id;
return false;
}
PrefService* local_state = Shell::Get()->local_state();
if (!local_state) {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": No shell local state available.";
return false;
}
ScopedDictPrefUpdate device_image_store(local_state, kDeviceImageStorePref);
// TODO(dclasson): Once we add TrueWireless support, need to modify this to
// merge new & persisted images objects.
if (!device_image_store->Set(model_id, images.ToDictionaryValue())) {
CD_LOG(WARNING, Feature::FP)
<< __func__
<< ": Failed to persist images to prefs for model ID: " + model_id;
return false;
}
return true;
}
bool DeviceImageStore::EvictDeviceImages(const std::string& model_id) {
PrefService* local_state = Shell::Get()->local_state();
if (!local_state) {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": No shell local state available.";
return false;
}
ScopedDictPrefUpdate device_image_store(local_state, kDeviceImageStorePref);
if (!device_image_store->Remove(model_id)) {
CD_LOG(WARNING, Feature::FP)
<< __func__
<< ": Failed to evict images from prefs for model ID: " + model_id;
return false;
}
return true;
}
std::optional<DeviceImageInfo> DeviceImageStore::GetImagesForDeviceModel(
const std::string& model_id) {
// Lazily load saved images from prefs the first time we get an image.
if (!loaded_images_from_prefs_) {
loaded_images_from_prefs_ = true;
LoadPersistedImagesFromPrefs();
}
DeviceImageInfo& images = model_id_to_images_[model_id];
if (!DeviceImageInfoHasImages(images)) {
return std::nullopt;
}
return images;
}
void DeviceImageStore::LoadPersistedImagesFromPrefs() {
PrefService* local_state = Shell::Get()->local_state();
if (!local_state) {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": No shell local state available.";
return;
}
const base::Value::Dict& device_image_store =
local_state->GetDict(kDeviceImageStorePref);
for (auto [model_id, image_dict] : device_image_store) {
std::optional<DeviceImageInfo> images;
if (image_dict.is_dict()) {
images = DeviceImageInfo::FromDictionaryValue(image_dict.GetDict());
}
if (!images) {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": Failed to load persisted images from prefs.";
continue;
}
model_id_to_images_[model_id] = images.value();
}
}
bool DeviceImageStore::DeviceImageInfoHasImages(
const DeviceImageInfo& images) const {
return !images.default_image_.empty() || !images.left_bud_image_.empty() ||
!images.right_bud_image_.empty() || !images.case_image_.empty();
}
void DeviceImageStore::DecodeImage(
const std::string& model_id,
DeviceImageType image_type,
const std::string& image_url,
FetchDeviceImagesCallback on_images_saved_callback) {
DCHECK(image_decoder_);
image_decoder_->DecodeImageFromUrl(
GURL(image_url), /*resize_to_notification_size=*/true,
base::BindOnce(&DeviceImageStore::SaveImageAsBase64,
weak_ptr_factory_.GetWeakPtr(), model_id, image_type,
std::move(on_images_saved_callback)));
}
void DeviceImageStore::SaveImageAsBase64(
const std::string& model_id,
DeviceImageType image_type,
FetchDeviceImagesCallback on_images_saved_callback,
gfx::Image image) {
if (image.IsEmpty()) {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": Failed to fetch device image.";
std::move(on_images_saved_callback)
.Run(std::make_pair(image_type, FetchDeviceImagesResult::kFailure));
return;
}
// Encode the image as a base64 data URL.
std::string encoded_image = webui::GetBitmapDataUrl(image.AsBitmap());
// Save the image in the correct path.
if (image_type == DeviceImageType::kDefault) {
model_id_to_images_[model_id].default_image_ = encoded_image;
} else if (image_type == DeviceImageType::kLeftBud) {
model_id_to_images_[model_id].left_bud_image_ = encoded_image;
} else if (image_type == DeviceImageType::kRightBud) {
model_id_to_images_[model_id].right_bud_image_ = encoded_image;
} else if (image_type == DeviceImageType::kCase) {
model_id_to_images_[model_id].case_image_ = encoded_image;
} else {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": Can't save device image to invalid image field.";
std::move(on_images_saved_callback)
.Run(std::make_pair(DeviceImageType::kNotSupportedType,
FetchDeviceImagesResult::kFailure));
return;
}
// Once successfully saved, return success.
std::move(on_images_saved_callback)
.Run(std::make_pair(image_type, FetchDeviceImagesResult::kSuccess));
}
void DeviceImageStore::RefreshCacheForTest() {
CD_LOG(INFO, Feature::FP) << __func__;
model_id_to_images_.clear();
LoadPersistedImagesFromPrefs();
}
} // namespace ash::quick_pair
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