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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_service.h"
#include <utility>
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_error.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_characteristic.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_uuid.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
BluetoothRemoteGATTService::BluetoothRemoteGATTService(
mojom::blink::WebBluetoothRemoteGATTServicePtr service,
bool is_primary,
const String& device_instance_id,
BluetoothDevice* device)
: service_(std::move(service)),
is_primary_(is_primary),
device_instance_id_(device_instance_id),
device_(device) {}
void BluetoothRemoteGATTService::Trace(Visitor* visitor) const {
visitor->Trace(device_);
ScriptWrappable::Trace(visitor);
}
// Callback that allows us to resolve the promise with a single characteristic
// or with a vector owning the characteristics.
void BluetoothRemoteGATTService::GetCharacteristicsCallback(
const String& service_instance_id,
const String& requested_characteristic_uuid,
mojom::blink::WebBluetoothGATTQueryQuantity quantity,
ScriptPromiseResolverBase* resolver,
mojom::blink::WebBluetoothResult result,
std::optional<Vector<mojom::blink::WebBluetoothRemoteGATTCharacteristicPtr>>
characteristics) {
if (!resolver->GetExecutionContext() ||
resolver->GetExecutionContext()->IsContextDestroyed())
return;
// If the device is disconnected, reject.
if (!device_->gatt()->RemoveFromActiveAlgorithms(resolver)) {
resolver->Reject(BluetoothError::CreateNotConnectedException(
BluetoothOperation::kCharacteristicsRetrieval));
return;
}
if (result == mojom::blink::WebBluetoothResult::SUCCESS) {
DCHECK(characteristics);
if (quantity == mojom::blink::WebBluetoothGATTQueryQuantity::SINGLE) {
DCHECK_EQ(1u, characteristics->size());
resolver->DowncastTo<BluetoothRemoteGATTCharacteristic>()->Resolve(
device_->GetOrCreateRemoteGATTCharacteristic(
resolver->GetExecutionContext(),
std::move(characteristics.value()[0]), this));
return;
}
HeapVector<Member<BluetoothRemoteGATTCharacteristic>> gatt_characteristics;
gatt_characteristics.ReserveInitialCapacity(characteristics->size());
for (auto& characteristic : characteristics.value()) {
gatt_characteristics.push_back(
device_->GetOrCreateRemoteGATTCharacteristic(
resolver->GetExecutionContext(), std::move(characteristic),
this));
}
resolver->DowncastTo<IDLSequence<BluetoothRemoteGATTCharacteristic>>()
->Resolve(gatt_characteristics);
} else {
if (result == mojom::blink::WebBluetoothResult::CHARACTERISTIC_NOT_FOUND) {
resolver->Reject(BluetoothError::CreateDOMException(
BluetoothErrorCode::kCharacteristicNotFound,
"No Characteristics matching UUID " + requested_characteristic_uuid +
" found in Service with UUID " + uuid() + "."));
} else {
resolver->Reject(BluetoothError::CreateDOMException(result));
}
}
}
ScriptPromise<BluetoothRemoteGATTCharacteristic>
BluetoothRemoteGATTService::getCharacteristic(
ScriptState* script_state,
const V8BluetoothCharacteristicUUID* characteristic,
ExceptionState& exception_state) {
String characteristic_uuid =
BluetoothUUID::getCharacteristic(characteristic, exception_state);
if (exception_state.HadException()) {
return EmptyPromise();
}
if (!device_->gatt()->connected() ||
!device_->GetBluetooth()->IsServiceBound()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNetworkError,
BluetoothError::CreateNotConnectedExceptionMessage(
BluetoothOperation::kCharacteristicsRetrieval));
return EmptyPromise();
}
if (!device_->IsValidService(service_->instance_id)) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"Service with UUID " + service_->uuid +
" is no longer valid. Remember "
"to retrieve the service again after reconnecting.");
return EmptyPromise();
}
auto* resolver = MakeGarbageCollected<
ScriptPromiseResolver<BluetoothRemoteGATTCharacteristic>>(
script_state, exception_state.GetContext());
device_->gatt()->AddToActiveAlgorithms(resolver);
mojom::blink::WebBluetoothService* service =
device_->GetBluetooth()->Service();
auto quantity = mojom::blink::WebBluetoothGATTQueryQuantity::SINGLE;
service->RemoteServiceGetCharacteristics(
service_->instance_id, quantity, characteristic_uuid,
WTF::BindOnce(&BluetoothRemoteGATTService::GetCharacteristicsCallback,
WrapPersistent(this), service_->instance_id,
characteristic_uuid, quantity, WrapPersistent(resolver)));
return resolver->Promise();
}
ScriptPromise<IDLSequence<BluetoothRemoteGATTCharacteristic>>
BluetoothRemoteGATTService::getCharacteristics(
ScriptState* script_state,
const V8BluetoothCharacteristicUUID* characteristic,
ExceptionState& exception_state) {
String characteristic_uuid =
BluetoothUUID::getCharacteristic(characteristic, exception_state);
if (exception_state.HadException()) {
return EmptyPromise();
}
return GetCharacteristicsImpl(script_state, exception_state,
characteristic_uuid);
}
ScriptPromise<IDLSequence<BluetoothRemoteGATTCharacteristic>>
BluetoothRemoteGATTService::getCharacteristics(
ScriptState* script_state,
ExceptionState& exception_state) {
return GetCharacteristicsImpl(script_state, exception_state);
}
ScriptPromise<IDLSequence<BluetoothRemoteGATTCharacteristic>>
BluetoothRemoteGATTService::GetCharacteristicsImpl(
ScriptState* script_state,
ExceptionState& exception_state,
const String& characteristics_uuid) {
if (!device_->gatt()->connected() ||
!device_->GetBluetooth()->IsServiceBound()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNetworkError,
BluetoothError::CreateNotConnectedExceptionMessage(
BluetoothOperation::kCharacteristicsRetrieval));
return EmptyPromise();
}
if (!device_->IsValidService(service_->instance_id)) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"Service with UUID " + service_->uuid +
" is no longer valid. Remember "
"to retrieve the service again after reconnecting.");
return EmptyPromise();
}
auto* resolver = MakeGarbageCollected<
ScriptPromiseResolver<IDLSequence<BluetoothRemoteGATTCharacteristic>>>(
script_state, exception_state.GetContext());
device_->gatt()->AddToActiveAlgorithms(resolver);
mojom::blink::WebBluetoothService* service =
device_->GetBluetooth()->Service();
auto quantity = mojom::blink::WebBluetoothGATTQueryQuantity::MULTIPLE;
service->RemoteServiceGetCharacteristics(
service_->instance_id, quantity, characteristics_uuid,
WTF::BindOnce(&BluetoothRemoteGATTService::GetCharacteristicsCallback,
WrapPersistent(this), service_->instance_id,
characteristics_uuid, quantity, WrapPersistent(resolver)));
return resolver->Promise();
}
} // namespace blink
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