/*
 * Copyright (C) 2019 The LineageOS 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.
 */

#ifndef ANDROID_HARDWARE_BIOMETRICS_FINGERPRINT_V2_3_BIOMETRICSFINGERPRINT_H
#define ANDROID_HARDWARE_BIOMETRICS_FINGERPRINT_V2_3_BIOMETRICSFINGERPRINT_H

#include <chrono>
#include <thread>

#ifdef HAS_FINGERPRINT_GESTURES
#include <linux/uinput.h>
#endif

#include <android/hardware/biometrics/fingerprint/2.1/types.h>
#include <android/hardware/biometrics/fingerprint/2.3/IBiometricsFingerprint.h>
#include <hardware/fingerprint.h>
#include <hardware/hardware.h>
#include <hidl/MQDescriptor.h>
#include <hidl/Status.h>

#include "VendorConstants.h"

namespace android {
namespace hardware {
namespace biometrics {
namespace fingerprint {
namespace V2_3 {
namespace implementation {

using namespace std::chrono_literals;

using ::android::sp;
using ::android::hardware::hidl_string;
using ::android::hardware::hidl_vec;
using ::android::hardware::Return;
using ::android::hardware::Void;
using ::android::hardware::biometrics::fingerprint::V2_1::
    FingerprintAcquiredInfo;
using ::android::hardware::biometrics::fingerprint::V2_1::FingerprintError;
using ::android::hardware::biometrics::fingerprint::V2_1::
    IBiometricsFingerprintClientCallback;
using ::android::hardware::biometrics::fingerprint::V2_1::RequestStatus;
using ::android::hardware::biometrics::fingerprint::V2_3::
    IBiometricsFingerprint;

struct BiometricsFingerprint : public IBiometricsFingerprint {
  BiometricsFingerprint();
  ~BiometricsFingerprint();

  // Method to wrap legacy HAL with BiometricsFingerprint class
  static IBiometricsFingerprint *getInstance();

  // Methods from
  // ::android::hardware::biometrics::fingerprint::V2_3::IBiometricsFingerprint
  // follow.
  Return<uint64_t> setNotify(
      const sp<IBiometricsFingerprintClientCallback> &clientCallback) override;
  Return<uint64_t> preEnroll() override;
  Return<RequestStatus> enroll(const hidl_array<uint8_t, 69> &hat, uint32_t gid,
                               uint32_t timeoutSec) override;
  Return<RequestStatus> postEnroll() override;
  Return<uint64_t> getAuthenticatorId() override;
  Return<RequestStatus> cancel() override;
  Return<RequestStatus> enumerate() override;
  Return<RequestStatus> remove(uint32_t gid, uint32_t fid) override;
  Return<RequestStatus> setActiveGroup(uint32_t gid,
                                       const hidl_string &storePath) override;
  Return<RequestStatus> authenticate(uint64_t operationId,
                                     uint32_t gid) override;
  Return<bool> isUdfps(uint32_t sensorID) override;
  Return<void> onFingerDown(uint32_t x, uint32_t y, float minor,
                            float major) override;
  Return<void> onFingerUp() override;
  Return<void> onShowUdfpsOverlay() { return Void(); }
  Return<void> onHideUdfpsOverlay() { return Void(); }

private:
  bool openHal();
  int request(int cmd, int param);
  int waitForSensor(std::chrono::milliseconds pollWait,
                    std::chrono::milliseconds timeOut);
  static void
  notify(const fingerprint_msg_t
             *msg); /* Static callback for legacy HAL implementation */
  void handleEvent(int eventCode);
  static Return<RequestStatus> ErrorFilter(int32_t error);
  static FingerprintError VendorErrorFilter(int32_t error, int32_t *vendorCode);
  static FingerprintAcquiredInfo VendorAcquiredFilter(int32_t error,
                                                      int32_t *vendorCode);
  static BiometricsFingerprint *sInstance;

  std::mutex mClientCallbackMutex;
  sp<IBiometricsFingerprintClientCallback> mClientCallback;
#ifdef HAS_FINGERPRINT_GESTURES
  int uinputFd;
  struct uinput_user_dev uidev {};
#endif

  int (*ss_fingerprint_close)();
  int (*ss_fingerprint_open)(const char *id);

  int (*ss_set_notify_callback)(fingerprint_notify_t notify);
  uint64_t (*ss_fingerprint_pre_enroll)();
  int (*ss_fingerprint_enroll)(const hw_auth_token_t *hat, uint32_t gid,
                               uint32_t timeout_sec);
  int (*ss_fingerprint_post_enroll)();
  uint64_t (*ss_fingerprint_get_auth_id)();
  int (*ss_fingerprint_cancel)();
  int (*ss_fingerprint_enumerate)();
  int (*ss_fingerprint_remove)(uint32_t gid, uint32_t fid);
  int (*ss_fingerprint_set_active_group)(uint32_t gid, const char *store_path);
  int (*ss_fingerprint_authenticate)(uint64_t operation_id, uint32_t gid);
  int (*ss_fingerprint_request)(uint32_t cmd, char *inBuf,
                                uint32_t inBuf_length, char *outBuf,
                                uint32_t outBuf_length, uint32_t param);
};

} // namespace implementation
} // namespace V2_3
} // namespace fingerprint
} // namespace biometrics
} // namespace hardware
} // namespace android

#endif // ANDROID_HARDWARE_BIOMETRICS_FINGERPRINT_V2_3_BIOMETRICSFINGERPRINT_H
