/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <android-base/file.h>
#include <android/hardware/usb/1.2/IUsbCallback.h>
#include <android/hardware/usb/1.2/types.h>
#include <android/hardware/usb/1.3/IUsb.h>
#include <hidl/Status.h>
#include <utils/Log.h>

#define UEVENT_MSG_LEN 2048
// The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd.
// The -partner directory would not be created until this is done.
// Having a margin of ~3 secs for the directory and other related bookeeping
// structures created and uvent fired.
#define PORT_TYPE_TIMEOUT 8

namespace android {
namespace hardware {
namespace usb {
namespace V1_3 {
namespace implementation {

using ::android::sp;
using ::android::base::ReadFileToString;
using ::android::base::WriteStringToFile;
using ::android::hardware::hidl_array;
using ::android::hardware::hidl_memory;
using ::android::hardware::hidl_string;
using ::android::hardware::hidl_vec;
using ::android::hardware::Return;
using ::android::hardware::Void;
using ::android::hardware::usb::V1_0::PortDataRole;
using ::android::hardware::usb::V1_0::PortPowerRole;
using ::android::hardware::usb::V1_0::PortRole;
using ::android::hardware::usb::V1_0::PortRoleType;
using ::android::hardware::usb::V1_0::Status;
using ::android::hardware::usb::V1_1::PortMode_1_1;
using ::android::hardware::usb::V1_1::PortStatus_1_1;
using ::android::hardware::usb::V1_2::IUsbCallback;
using ::android::hardware::usb::V1_2::PortStatus;
using ::android::hardware::usb::V1_3::IUsb;
using ::android::hidl::base::V1_0::DebugInfo;
using ::android::hidl::base::V1_0::IBase;

enum class HALVersion { V1_0, V1_1, V1_2, V1_3 };

#define USB_DATA_PATH                                                          \
  "/sys/devices/virtual/usb_notify/usb_control/usb_data_enabled"

struct Usb : public IUsb {
  Usb();

  Return<void> switchRole(const hidl_string &portName,
                          const PortRole &role) override;
  Return<void> setCallback(const sp<V1_0::IUsbCallback> &callback) override;
  Return<void> queryPortStatus() override;
  Return<void> enableContaminantPresenceDetection(const hidl_string &portName,
                                                  bool enable);
  Return<void> enableContaminantPresenceProtection(const hidl_string &portName,
                                                   bool enable);
  Return<bool> enableUsbDataSignal(bool enable) override;

  sp<V1_0::IUsbCallback> mCallback_1_0;
  // Protects mCallback variable
  pthread_mutex_t mLock;
  // Protects roleSwitch operation
  pthread_mutex_t mRoleSwitchLock;
  // Threads waiting for the partner to come back wait here
  pthread_cond_t mPartnerCV;
  // lock protecting mPartnerCV
  pthread_mutex_t mPartnerLock;
  // Variable to signal partner coming back online after type switch
  bool mPartnerUp;

private:
  pthread_t mPoll;
};

} // namespace implementation
} // namespace V1_3
} // namespace usb
} // namespace hardware
} // namespace android
