/******************************************************************************
 *
 *  Copyright (c) 2014 The Android Open Source Project
 *  Copyright 2009-2012 Broadcom Corporation
 *
 *  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 BTIF_COMMON_H
#define BTIF_COMMON_H

#include <base/functional/bind.h>
#include <base/location.h>
#include <bluetooth/log.h>
#include <hardware/bluetooth.h>
#include <stdlib.h>

#include <functional>

#include "abstract_message_loop.h"
#include "bta/include/bta_api.h"
#include "osi/include/osi.h"
#include "stack/include/bt_hdr.h"
#include "types/raw_address.h"

/*******************************************************************************
 *  Constants & Macros
 ******************************************************************************/

#define ASSERTC(cond, msg, val)                                        \
  do {                                                                 \
    if (!(cond)) {                                                     \
      bluetooth::log::error("### ASSERT : {} ({}) ###", (msg), (val)); \
    }                                                                  \
  } while (0)

/*
 * A memcpy(3) wrapper when copying memory that might not be aligned.
 *
 * On certain architectures, if the memcpy(3) arguments appear to be
 * pointing to aligned memory (e.g., struct pointers), the compiler might
 * generate optimized memcpy(3) code. However, if the original memory was not
 * aligned (e.g., because of incorrect "char *" to struct pointer casting),
 * the result code might trigger SIGBUS crash.
 *
 * As a short-term solution, we use the help of the maybe_non_aligned_memcpy()
 * macro to identify and fix such cases. In the future, we should fix the
 * problematic "char *" to struct pointer casting, and this macro itself should
 * be removed.
 */
#define maybe_non_aligned_memcpy(_a, _b, _c) memcpy((void*)(_a), (void*)(_b), (_c))

#define HAL_CBACK(P_CB, P_CBACK, ...)                         \
  do {                                                        \
    if ((P_CB) && (P_CB)->P_CBACK) {                          \
      bluetooth::log::verbose("HAL {}->{}", #P_CB, #P_CBACK); \
      (P_CB)->P_CBACK(__VA_ARGS__);                           \
    } else {                                                  \
      ASSERTC(0, "Callback is NULL", 0);                      \
    }                                                         \
  } while (0)

/*******************************************************************************
 *  Type definitions for callback functions
 ******************************************************************************/

typedef void(tBTIF_CBACK)(uint16_t event, char* p_param);
typedef void(tBTIF_COPY_CBACK)(uint16_t event, char* p_dest, const char* p_src);

/*******************************************************************************
 *  Type definitions and return values
 ******************************************************************************/

/* this type handles all btif context switches between BTU and HAL */
typedef struct {
  BT_HDR_RIGID hdr;
  tBTIF_CBACK* p_cb; /* context switch callback */

  /* parameters passed to callback */
  uint16_t event;                          /* message event id */
  char __attribute__((aligned)) p_param[]; /* parameter area needs to be last */
} tBTIF_CONTEXT_SWITCH_CBACK;

/*******************************************************************************
 *  Functions
 ******************************************************************************/

bt_status_t do_in_jni_thread(base::OnceClosure task);
bool is_on_jni_thread();

using BtJniClosure = std::function<void()>;
void post_on_bt_jni(BtJniClosure closure);

/**
 * This template wraps callback into callback that will be executed on jni
 * thread
 */
template <typename R, typename... Args>
base::Callback<R(Args...)> jni_thread_wrapper(base::Callback<R(Args...)> cb) {
  return base::Bind(
          [](base::Callback<R(Args...)> cb, Args... args) {
            do_in_jni_thread(base::BindOnce(cb, std::forward<Args>(args)...));
          },
          std::move(cb));
}

tBTA_SERVICE_MASK btif_get_enabled_services_mask(void);
void btif_enable_service(tBTA_SERVICE_ID service_id);
void btif_disable_service(tBTA_SERVICE_ID service_id);
int btif_is_enabled(void);

/**
 * BTIF_Events
 */
void btif_enable_bluetooth_evt();
void btif_adapter_properties_evt(bt_status_t status, uint32_t num_props, bt_property_t* p_props);
void btif_remote_properties_evt(bt_status_t status, RawAddress* remote_addr, uint32_t num_props,
                                bt_property_t* p_props);

bt_status_t btif_transfer_context(tBTIF_CBACK* p_cback, uint16_t event, char* p_params,
                                  int param_len, tBTIF_COPY_CBACK* p_copy_cback);

void btif_init_ok();

void invoke_adapter_state_changed_cb(bt_state_t state);
void invoke_adapter_properties_cb(bt_status_t status, int num_properties,
                                  bt_property_t* properties);
void invoke_remote_device_properties_cb(bt_status_t status, RawAddress bd_addr, int num_properties,
                                        bt_property_t* properties);
void invoke_device_found_cb(int num_properties, bt_property_t* properties);
void invoke_discovery_state_changed_cb(bt_discovery_state_t state);
void invoke_pin_request_cb(RawAddress bd_addr, bt_bdname_t bd_name, uint32_t cod,
                           bool min_16_digit);
void invoke_ssp_request_cb(RawAddress bd_addr, bt_ssp_variant_t pairing_variant, uint32_t pass_key);
void invoke_oob_data_request_cb(tBT_TRANSPORT t, bool valid, Octet16 c, Octet16 r,
                                RawAddress raw_address, uint8_t address_type);
void invoke_bond_state_changed_cb(bt_status_t status, RawAddress bd_addr, bt_bond_state_t state,
                                  int fail_reason);
void invoke_address_consolidate_cb(RawAddress main_bd_addr, RawAddress secondary_bd_addr);
void invoke_le_address_associate_cb(RawAddress main_bd_addr, RawAddress secondary_bd_addr,
                                    uint8_t identity_address_type);
void invoke_acl_state_changed_cb(bt_status_t status, RawAddress bd_addr, bt_acl_state_t state,
                                 int transport_link_type, bt_hci_error_code_t hci_reason,
                                 bt_conn_direction_t direction, uint16_t acl_handle);
void invoke_thread_evt_cb(bt_cb_thread_evt event);
void invoke_le_test_mode_cb(bt_status_t status, uint16_t count);
void invoke_energy_info_cb(bt_activity_energy_info energy_info, bt_uid_traffic_t* uid_data);
void invoke_link_quality_report_cb(uint64_t timestamp, int report_id, int rssi, int snr,
                                   int retransmission_count, int packets_not_receive_count,
                                   int negative_acknowledgement_count);

void invoke_switch_buffer_size_cb(bool is_low_latency_buffer_size);
void invoke_switch_codec_cb(bool is_low_latency_buffer_size);
void invoke_key_missing_cb(RawAddress bd_addr);
void invoke_encryption_change_cb(bt_encryption_change_evt encryption_change);
#endif /* BTIF_COMMON_H */