// Copyright 2015 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 "device/bluetooth/bluetooth_device_android.h"

#include "base/android/context_utils.h"
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/stringprintf.h"
#include "device/bluetooth/bluetooth_adapter_android.h"
#include "device/bluetooth/bluetooth_remote_gatt_service_android.h"
#include "jni/ChromeBluetoothDevice_jni.h"

using base::android::AttachCurrentThread;
using base::android::JavaParamRef;
using base::android::JavaRef;

namespace device {
namespace {
void RecordConnectionSuccessResult(int32_t status) {
  UMA_HISTOGRAM_SPARSE_SLOWLY("Bluetooth.Android.GATTConnection.Success.Result",
                              status);
}
void RecordConnectionFailureResult(int32_t status) {
  UMA_HISTOGRAM_SPARSE_SLOWLY("Bluetooth.Android.GATTConnection.Failure.Result",
                              status);
}
void RecordConnectionTerminatedResult(int32_t status) {
  UMA_HISTOGRAM_SPARSE_SLOWLY(
      "Bluetooth.Android.GATTConnection.Disconnected.Result", status);
}
}  // namespace

BluetoothDeviceAndroid* BluetoothDeviceAndroid::Create(
    BluetoothAdapterAndroid* adapter,
    const JavaRef<jobject>&
        bluetooth_device_wrapper) {  // Java Type: bluetoothDeviceWrapper
  BluetoothDeviceAndroid* device = new BluetoothDeviceAndroid(adapter);

  device->j_device_.Reset(Java_ChromeBluetoothDevice_create(
      AttachCurrentThread(), reinterpret_cast<intptr_t>(device),
      bluetooth_device_wrapper));

  return device;
}

BluetoothDeviceAndroid::~BluetoothDeviceAndroid() {
  Java_ChromeBluetoothDevice_onBluetoothDeviceAndroidDestruction(
      AttachCurrentThread(), j_device_);
}

// static
bool BluetoothDeviceAndroid::RegisterJNI(JNIEnv* env) {
  return RegisterNativesImpl(env);  // Generated in ChromeBluetoothDevice_jni.h
}

base::android::ScopedJavaLocalRef<jobject>
BluetoothDeviceAndroid::GetJavaObject() {
  return base::android::ScopedJavaLocalRef<jobject>(j_device_);
}

uint32_t BluetoothDeviceAndroid::GetBluetoothClass() const {
  return Java_ChromeBluetoothDevice_getBluetoothClass(AttachCurrentThread(),
                                                      j_device_);
}

std::string BluetoothDeviceAndroid::GetAddress() const {
  return ConvertJavaStringToUTF8(
      Java_ChromeBluetoothDevice_getAddress(AttachCurrentThread(), j_device_));
}

BluetoothDevice::VendorIDSource BluetoothDeviceAndroid::GetVendorIDSource()
    const {
  // Android API does not provide Vendor ID.
  return VENDOR_ID_UNKNOWN;
}

uint16_t BluetoothDeviceAndroid::GetVendorID() const {
  // Android API does not provide Vendor ID.
  return 0;
}

uint16_t BluetoothDeviceAndroid::GetProductID() const {
  // Android API does not provide Product ID.
  return 0;
}

uint16_t BluetoothDeviceAndroid::GetDeviceID() const {
  // Android API does not provide Device ID.
  return 0;
}

uint16_t BluetoothDeviceAndroid::GetAppearance() const {
  // TODO(crbug.com/588083): Implementing GetAppearance()
  // on mac, win, and android platforms for chrome
  NOTIMPLEMENTED();
  return 0;
}

base::Optional<std::string> BluetoothDeviceAndroid::GetName() const {
  auto name =
      Java_ChromeBluetoothDevice_getName(AttachCurrentThread(), j_device_);
  if (name.is_null())
    return base::nullopt;
  return ConvertJavaStringToUTF8(name);
}

bool BluetoothDeviceAndroid::IsPaired() const {
  return Java_ChromeBluetoothDevice_isPaired(AttachCurrentThread(), j_device_);
}

bool BluetoothDeviceAndroid::IsConnected() const {
  return IsGattConnected();
}

bool BluetoothDeviceAndroid::IsGattConnected() const {
  return gatt_connected_;
}

bool BluetoothDeviceAndroid::IsConnectable() const {
  NOTIMPLEMENTED();
  return false;
}

bool BluetoothDeviceAndroid::IsConnecting() const {
  NOTIMPLEMENTED();
  return false;
}

bool BluetoothDeviceAndroid::ExpectingPinCode() const {
  NOTIMPLEMENTED();
  return false;
}

bool BluetoothDeviceAndroid::ExpectingPasskey() const {
  NOTIMPLEMENTED();
  return false;
}

bool BluetoothDeviceAndroid::ExpectingConfirmation() const {
  NOTIMPLEMENTED();
  return false;
}

void BluetoothDeviceAndroid::GetConnectionInfo(
    const ConnectionInfoCallback& callback) {
  NOTIMPLEMENTED();
  callback.Run(ConnectionInfo());
}

void BluetoothDeviceAndroid::Connect(
    PairingDelegate* pairing_delegate,
    const base::Closure& callback,
    const ConnectErrorCallback& error_callback) {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::SetPinCode(const std::string& pincode) {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::SetPasskey(uint32_t passkey) {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::ConfirmPairing() {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::RejectPairing() {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::CancelPairing() {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::Disconnect(const base::Closure& callback,
                                        const ErrorCallback& error_callback) {
  // TODO(scheib): Also update unit tests for BluetoothGattConnection.
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::Forget(const base::Closure& callback,
                                    const ErrorCallback& error_callback) {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::ConnectToService(
    const BluetoothUUID& uuid,
    const ConnectToServiceCallback& callback,
    const ConnectToServiceErrorCallback& error_callback) {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::ConnectToServiceInsecurely(
    const BluetoothUUID& uuid,
    const ConnectToServiceCallback& callback,
    const ConnectToServiceErrorCallback& error_callback) {
  NOTIMPLEMENTED();
}

void BluetoothDeviceAndroid::OnConnectionStateChange(
    JNIEnv* env,
    const JavaParamRef<jobject>& jcaller,
    int32_t status,
    bool connected) {
  gatt_connected_ = connected;
  if (gatt_connected_) {
    RecordConnectionSuccessResult(status);
    DidConnectGatt();
  } else if (!create_gatt_connection_error_callbacks_.empty()) {
    // We assume that if there are any pending connection callbacks there
    // was a failed connection attempt.
    RecordConnectionFailureResult(status);
    // TODO(ortuno): Return an error code based on |status|
    // http://crbug.com/578191
    DidFailToConnectGatt(ERROR_FAILED);
  } else {
    // Otherwise an existing connection was terminated.
    RecordConnectionTerminatedResult(status);
    gatt_services_.clear();
    device_uuids_.ClearServiceUUIDs();
    SetGattServicesDiscoveryComplete(false);
    DidDisconnectGatt();
  }
}

void BluetoothDeviceAndroid::OnGattServicesDiscovered(
    JNIEnv* env,
    const JavaParamRef<jobject>& jcaller) {
  device_uuids_.ReplaceServiceUUIDs(gatt_services_);
  SetGattServicesDiscoveryComplete(true);
  adapter_->NotifyGattServicesDiscovered(this);
  adapter_->NotifyDeviceChanged(this);
}

void BluetoothDeviceAndroid::CreateGattRemoteService(
    JNIEnv* env,
    const JavaParamRef<jobject>& caller,
    const JavaParamRef<jstring>& instance_id,
    const JavaParamRef<jobject>&
        bluetooth_gatt_service_wrapper) {  // BluetoothGattServiceWrapper
  std::string instance_id_string =
      base::android::ConvertJavaStringToUTF8(env, instance_id);

  if (gatt_services_.contains(instance_id_string))
    return;

  BluetoothDevice::GattServiceMap::iterator service_iterator =
      gatt_services_.set(
          instance_id_string,
          BluetoothRemoteGattServiceAndroid::Create(
              GetAndroidAdapter(), this, bluetooth_gatt_service_wrapper,
              instance_id_string, j_device_));

  adapter_->NotifyGattServiceAdded(service_iterator->second);
}

BluetoothDeviceAndroid::BluetoothDeviceAndroid(BluetoothAdapterAndroid* adapter)
    : BluetoothDevice(adapter) {}

void BluetoothDeviceAndroid::CreateGattConnectionImpl() {
  Java_ChromeBluetoothDevice_createGattConnectionImpl(
      AttachCurrentThread(), j_device_, base::android::GetApplicationContext());
}

void BluetoothDeviceAndroid::DisconnectGatt() {
  Java_ChromeBluetoothDevice_disconnectGatt(AttachCurrentThread(), j_device_);
}

}  // namespace device