/***************************************************************************
 *
 * Copyright 2015-2020 BES.
 * All rights reserved. All unpublished rights reserved.
 *
 * No part of this work may be used or reproduced in any form or by any
 * means, or stored in a database or retrieval system, without prior written
 * permission of BES.
 *
 * Use of this work is governed by a license granted by BES.
 * This work contains confidential and proprietary information of
 * BES. which is protected by copyright, trade secret,
 * trademark and other intellectual property rights.
 *
 ****************************************************************************/
#ifdef BTIF_HID_DEVICE
#include <stdio.h>
#include "cmsis_os.h"
#include "hal_uart.h"
#include "hal_timer.h"
#include "lockcqueue.h"
#include "hal_trace.h"
#include "hal_cmu.h"
#include "hal_chipid.h"
#include "analog.h"
#include "app_audio.h"
#include "app_battery.h"
#include "hal_trace.h"
#include "app_status_ind.h"
#include "bluetooth.h"
#include "nvrecord.h"
#include "nvrecord_env.h"
#include "nvrecord_dev.h"
#if defined(NEW_NV_RECORD_ENABLED)
#include "nvrecord_bt.h"
#endif
#include "besbt.h"
#include "cqueue.h"
#include "btapp.h"
#include "app_bt.h"
#include "apps.h"
#include "resources.h"
#include "bt_if.h"
#include "os_api.h"
#include "app_bt_func.h"
#include "bt_drv_interface.h"
#include "app.h"
#include "bt_drv_reg_op.h"
#include "besbt_cfg.h"
#include "me_api.h"
#include "app_tws_ibrt.h"
#include "app_bt_hid.h"
#include "hid_api.h"

static bool shutter_mode = false;
static bool send_capture_pending = false;

#define APP_BT_HID_DELAY_SEND_CAPTURE_MS 500
osTimerId app_bt_hid_delay_send_timer_id = 0;
static void app_bt_hid_delay_send_timer_handler(void const *param);
osTimerDef (APP_BT_HID_DELAY_SEND_CAPTURE_TIMER, app_bt_hid_delay_send_timer_handler);

extern struct BT_DEVICE_T  app_bt_device;

static void app_bt_hid_delay_send_timer_handler(void const *param)
{
    hid_channel_t chan = (hid_channel_t)param;
    app_bt_start_custom_function_in_bt_thread((uint32_t)&chan, (uint32_t)NULL, (uint32_t)app_bt_hid_send_capture);
}

static void app_bt_hid_delay_send_capture(hid_channel_t chan)
{
    if (app_bt_hid_delay_send_timer_id)
    {
        osTimerStop(app_bt_hid_delay_send_timer_id);
        osTimerDelete(app_bt_hid_delay_send_timer_id);
        app_bt_hid_delay_send_timer_id = 0;
    }

    app_bt_hid_delay_send_timer_id = osTimerCreate(osTimer(APP_BT_HID_DELAY_SEND_CAPTURE_TIMER), osTimerOnce, chan);

    if (!app_bt_hid_delay_send_timer_id)
    {
        TRACE(1, "%s create timer failed", __func__);
        return;
    }

    TRACE(2, "%s channel %p", __func__, chan);

    osTimerStart(app_bt_hid_delay_send_timer_id, APP_BT_HID_DELAY_SEND_CAPTURE_MS);
}

static void app_bt_hid_callback(hid_channel_t chan, const hid_callback_parms_t *param)
{
    btif_hid_callback_param_t *info = (btif_hid_callback_param_t *)param;

    TRACE(9, "%s channel %p event %d errno %02x %02x:%02x:%02x:%02x:%02x:%02x",
                __func__, chan, info->event, info->error_code,
                info->remote.address[0], info->remote.address[1], info->remote.address[2],
                info->remote.address[3], info->remote.address[4], info->remote.address[5]);

    switch (info->event)
    {
        case BTIF_HID_EVENT_CONN_OPENED:
            shutter_mode = true;
            if (send_capture_pending)
            {
                app_bt_hid_delay_send_capture(chan);
                send_capture_pending = false;
            }
            break;
        case BTIF_HID_EVENT_CONN_CLOSED:
            shutter_mode = false;
            break;
        default:
            break;
    }
    app_tws_ibrt_profile_callback(BTIF_APP_HID_PROFILE_ID, (void *)chan, (void *)param);
}

void app_bt_hid_init(void)
{
    //TRACE(2, "%s sink_enable %d", __func__, besbt_cfg.sink_enable);
    //if (besbt_cfg.sink_enable)
    {
        btif_hid_init(app_bt_hid_callback, HID_DEVICE_ROLE);

        for (int i = 0; i < BT_DEVICE_NUM; ++i)
        {
            app_bt_device.hid_channel[i] = btif_hid_channel_alloc();
            TRACE(2, "app_bt_hid_init device: %d hid_channle: %p", i, app_bt_device.hid_channel[i]);
        }
    }
}

void app_bt_hid_profile_connect(bt_bdaddr_t *bdaddr)
{
    static bt_bdaddr_t remote;

    remote = *bdaddr;

    TRACE(7, "%s address %02x:%02x:%02x:%02x:%02x:%02x", __func__,
        remote.address[0], remote.address[1], remote.address[2],
        remote.address[3], remote.address[4], remote.address[5]);

    app_bt_start_custom_function_in_bt_thread((uint32_t)&remote, (uint32_t)NULL, (uint32_t)btif_hid_connect);
}

void app_bt_hid_profile_disconnect(hid_channel_t chnl)
{
    TRACE(1, "%s channel %p", __func__, chnl);

    app_bt_start_custom_function_in_bt_thread((uint32_t)chnl, (uint32_t)NULL, (uint32_t)btif_hid_disconnect);
}

int app_bt_nvrecord_get_latest_device_addr(bt_bdaddr_t *addr)
{
    btif_device_record_t record;
    int found_addr_count = 0;
    int paired_dev_count = nv_record_get_paired_dev_count();

    if (paired_dev_count > 0 && BT_STS_SUCCESS == nv_record_enum_dev_records(0, &record))
    {
        *addr = record.bdAddr;
        found_addr_count = 1;
    }

    return found_addr_count;
}

void app_bt_hid_enter_shutter_mode(void)
{
    bt_bdaddr_t remote;

    TRACE(1, "%s", __func__);

    if (!app_bt_nvrecord_get_latest_device_addr(&remote))
    {
        TRACE(1, "%s latest device not found", __func__);
        return;
    }

    if (!shutter_mode)
    {
        app_bt_hid_profile_connect(&remote);
        shutter_mode = true;
    }
    else
    {
        TRACE(1, "%s already in shutter mode", __func__);
    }
}

void app_bt_hid_exit_shutter_mode(void)
{
    hid_channel_t chnl = NULL;
    int i = 0;

    TRACE(0, "%s", __func__);

    for (; i < BT_DEVICE_NUM; ++i)
    {
        chnl = app_bt_device.hid_channel[i];
        if (btif_hid_is_connected(chnl))
        {
            app_bt_hid_profile_disconnect(chnl);
        }
    }

    shutter_mode = false;
}

void app_bt_hid_send_capture(hid_channel_t chnl)
{
    for (int i = 0; i < BT_DEVICE_NUM; ++i)
    {
        if (btif_hid_is_connected(app_bt_device.hid_channel[i]))
        {
            chnl = app_bt_device.hid_channel[i];
            break;
        }
    }

    TRACE(3, "%s channel %p state %d", __func__, chnl, btif_hid_get_state(chnl));

    if (btif_hid_is_connected(chnl))
    {
        send_capture_pending = false;

        btif_hid_keyboard_input_report(chnl, HID_MOD_KEY_NULL, HID_KEY_CODE_ENTER);
        btif_hid_keyboard_input_report(chnl, HID_MOD_KEY_NULL, HID_KEY_CODE_NULL);

        btif_hid_keyboard_send_ctrl_key(chnl, HID_CTRL_KEY_VOLUME_INC);
        btif_hid_keyboard_send_ctrl_key(chnl, HID_CTRL_KEY_NULL);
    }
    else
    {
        send_capture_pending = true;

        app_bt_hid_enter_shutter_mode();
    }

}

#endif /* BTIF_HID_DEVICE */