/*
 * Copyright (C) 2014 BlueKitchen GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 4. Any redistribution, use, or modification is done solely for
 *    personal benefit and not for any commercial purpose or for
 *    monetary gain.
 *
 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Please inquire about commercial licensing options at 
 * contact@bluekitchen-gmbh.com
 *
 */

#define __BTSTACK_FILE__ "main.c"

// *****************************************************************************
//
// minimal setup for HCI code
//
// *****************************************************************************

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>

#include "btstack_config.h"

#include "btstack_audio.h"
#include "btstack_debug.h"
#include "btstack_event.h"
#include "ble/le_device_db_tlv.h"
#include "classic/btstack_link_key_db_tlv.h"
#include "btstack_memory.h"
#include "btstack_run_loop.h"
#include "btstack_run_loop_posix.h"
#include "btstack_uart.h"
#include "btstack_uart_block.h"
#include "bluetooth_company_id.h"
#include "hci.h"
#include "hci_dump.h"
#include "hci_dump_posix_fs.h"
#include "hci_transport.h"
#include "hci_transport_h4.h"
#include "btstack_stdin.h"
#include "btstack_tlv_posix.h"

#include "btstack_chipset_bcm.h"
#include "btstack_chipset_csr.h"

#define TLV_DB_PATH_PREFIX "/tmp/btstack_"
#define TLV_DB_PATH_POSTFIX ".tlv"
#define LOG_FILE_PATH "logs/hci_dump.pklg"

static char tlv_db_path[100];
static const btstack_tlv_t *tlv_impl;
static btstack_tlv_posix_t tlv_context;

extern "C" int btstack_main(int argc, const char *argv[]);
static void local_version_information_handler(uint8_t *packet);

static hci_transport_config_uart_t config = {
    HCI_TRANSPORT_CONFIG_UART,
    921600,
    0, // main baudrate
    0, // flow control
    NULL,
};

static btstack_packet_callback_registration_t hci_event_callback_registration;

static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size)
{
    bd_addr_t addr;
    if (packet_type != HCI_EVENT_PACKET)
        return;
    switch (hci_event_packet_get_type(packet))
    {
    case BTSTACK_EVENT_STATE:
        if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING)
            break;
        gap_local_bd_addr(addr);
        printf("BTstack up and running at %s\n", bd_addr_to_str(addr));
        // setup TLV
        strcpy(tlv_db_path, TLV_DB_PATH_PREFIX);
        strcat(tlv_db_path, bd_addr_to_str(addr));
        strcat(tlv_db_path, TLV_DB_PATH_POSTFIX);
        tlv_impl = btstack_tlv_posix_init_instance(&tlv_context, tlv_db_path);
        btstack_tlv_set_instance(tlv_impl, &tlv_context);
#ifdef ENABLE_CLASSIC
        hci_set_link_key_db(btstack_link_key_db_tlv_get_instance(tlv_impl, &tlv_context));
#endif
#ifdef ENABLE_BLE
        le_device_db_tlv_configure(tlv_impl, &tlv_context);
#endif
        break;
    case HCI_EVENT_COMMAND_COMPLETE:
        if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_read_local_name))
        {
            if (hci_event_command_complete_get_return_parameters(packet)[0])
                break;
            // terminate, name 248 chars
            packet[6 + 248] = 0;
            printf("Local name: %s\n", &packet[6]);
        }
        if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_read_local_version_information))
        {
            local_version_information_handler(packet);
        }
        break;
    default:
        break;
    }
}

static void sigint_handler(int param)
{
    UNUSED(param);

    printf("CTRL-C - SIGINT received, shutting down..\n");
    log_info("sigint_handler: shutting down");

    // reset anyway
    btstack_stdin_reset();

    // power down
    hci_power_control(HCI_POWER_OFF);
    hci_close();
    log_info("Good bye, see you.\n");
    exit(0);
}

static int led_state = 0;
void hal_led_toggle(void)
{
    led_state = 1 - led_state;
    printf("LED State %u\n", led_state);
}

static void local_version_information_handler(uint8_t *packet)
{
    printf("Local version information:\n");
    uint16_t hci_version = packet[6];
    uint16_t hci_revision = little_endian_read_16(packet, 7);
    uint16_t lmp_version = packet[9];
    uint16_t manufacturer = little_endian_read_16(packet, 10);
    uint16_t lmp_subversion = little_endian_read_16(packet, 12);
    printf("- HCI Version    0x%04x\n", hci_version);
    printf("- HCI Revision   0x%04x\n", hci_revision);
    printf("- LMP Version    0x%04x\n", lmp_version);
    printf("- LMP Subversion 0x%04x\n", lmp_subversion);
    printf("- Manufacturer 0x%04x\n", manufacturer);
}

int main(int argc, const char *argv[])
{

    /// GET STARTED with BTstack ///
    btstack_memory_init();
    btstack_run_loop_init(btstack_run_loop_posix_get_instance());

    // log into file using HCI_DUMP_PACKETLOGGER format
    hci_dump_posix_fs_open(LOG_FILE_PATH, HCI_DUMP_PACKETLOGGER);
    const hci_dump_t *hci_dump_impl = hci_dump_posix_fs_get_instance();
    hci_dump_init(hci_dump_impl);
    printf("Packet Log: %s\n", LOG_FILE_PATH);

    // pick serial port
    config.device_name = "/dev/ttyUSB0";

    // accept path from command line
    if (argc >= 3 && strcmp(argv[1], "-u") == 0)
    {
        config.device_name = argv[2];
        argc -= 2;
        memmove(&argv[1], &argv[3], (argc - 1) * sizeof(char *));
    }
    printf("H4 device: %s\n", config.device_name);

    // init HCI
    const btstack_uart_t *uart_driver = btstack_uart_posix_instance();
    const hci_transport_t *transport = hci_transport_h4_instance_for_uart(uart_driver);
    hci_init(transport, (void *)&config);

#ifdef HAVE_PORTAUDIO
    btstack_audio_sink_set_instance(btstack_audio_portaudio_sink_get_instance());
    btstack_audio_source_set_instance(btstack_audio_portaudio_source_get_instance());
#endif

    // set BD_ADDR for CSR without Flash/unique address
    // bd_addr_t own_address = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
    // btstack_chipset_csr_set_bd_addr(own_address);

    // inform about BTstack state
    hci_event_callback_registration.callback = &packet_handler;
    hci_add_event_handler(&hci_event_callback_registration);

    // handle CTRL-c
    signal(SIGINT, sigint_handler);

    // setup app
    btstack_main(argc, argv);

    // go
    btstack_run_loop_execute();

    return 0;
}