/**
 * Copyright (c) 2019, Freqchip
 * 
 * All rights reserved.
 * 
 * 
 */
 
 /*
 * INCLUDES (包含头文件)
 */
#include <stdbool.h>

#include "co_log.h"

#include "gap_api.h"
#include "gatt_api.h"

#include "simple_gatt_service.h"
#include "ble_simple_peripheral.h"

/*
 * MACROS (宏定义)
 */
#undef LOG_LOCAL_LEVEL
#define LOG_LOCAL_LEVEL        (LOG_LEVEL_INFO)
extern const char *app_tag;

/*
 * CONSTANTS (常量定义)
 */

// GAP - Advertisement data (max size = 31 bytes, though this is
// best kept short to conserve power while advertisting)
// GAP-广播包的内容,最长31个字节.短一点的内容可以节省广播时的系统功耗.
static uint8_t adv_data[] =
{
    // service UUID, to notify central devices what services are included
    // in this peripheral. 告诉central本机有什么服务, 但这里先只放一个主要的.
    0x03,   // length of this data
    GAP_ADVTYPE_16BIT_MORE,      // some of the UUID's, but not all
    0xFF,
    0xFE,
};

// GAP - Scan response data (max size = 31 bytes, though this is
// best kept short to conserve power while advertisting)
// GAP-Scan response内容,最长31个字节.短一点的内容可以节省广播时的系统功耗.
static uint8_t scan_rsp_data[] =
{
    // complete name 设备名字
    0x12,   // length of this data
    GAP_ADVTYPE_LOCAL_NAME_COMPLETE,
    'S','i','m','p','l','e',' ','P','e','r','i','p','h','e','r','a','l',

    // Tx power level 发射功率
    0x02,   // length of this data
    GAP_ADVTYPE_POWER_LEVEL,
    0,      // 0dBm
};

/*
 * TYPEDEFS (类型定义)
 */

/*
 * GLOBAL VARIABLES (全局变量)
 */

/*
 * LOCAL VARIABLES (本地变量)
 */


 
/*
 * LOCAL FUNCTIONS (本地函数)
 */
static void sp_start_adv(void);
/*
 * EXTERN FUNCTIONS (外部函数)
 */

/*
 * PUBLIC FUNCTIONS (全局函数)
 */

/** @function group ble peripheral device APIs (ble外设相关的API)
 * @{
 */

/*********************************************************************
 * @fn      app_gap_evt_cb
 *
 * @brief   Application layer GAP event callback function. Handles GAP evnets.
 *
 * @param   p_event - GAP events from BLE stack.
 *       
 *
 * @return  None.
 */
void app_gap_evt_cb(gap_event_t *p_event)
{
    switch(p_event->type)
    {
        case GAP_EVT_ADV_END:
        {
            LOG_INFO(app_tag, "adv_end,status:0x%02x\r\n",p_event->param.adv_end.status);
        }
        break;
        
        case GAP_EVT_ALL_SVC_ADDED:
        {
            LOG_INFO(app_tag, "All service added\r\n");
            sp_start_adv();
        }
        break;

        case GAP_EVT_SLAVE_CONNECT:
        {
            LOG_INFO(app_tag, "slave[%d],connect. link_num:%d\r\n",p_event->param.slave_connect.conidx,gap_get_connect_num());
        }
        break;

        case GAP_EVT_DISCONNECT:
        {
            LOG_INFO(app_tag, "Link[%d] disconnect,reason:0x%02X\r\n",p_event->param.disconnect.conidx
                      ,p_event->param.disconnect.reason);
            gap_start_advertising(0);
        }
        break;

        case GAP_EVT_LINK_PARAM_REJECT:
            LOG_INFO(app_tag, "Link[%d]param reject,status:0x%02x\r\n"
                      ,p_event->param.link_reject.conidx,p_event->param.link_reject.status);
            break;

        case GAP_EVT_LINK_PARAM_UPDATE:
            LOG_INFO(app_tag, "Link[%d]param update,interval:%d,latency:%d,timeout:%d\r\n",p_event->param.link_update.conidx
                      ,p_event->param.link_update.con_interval,p_event->param.link_update.con_latency,p_event->param.link_update.sup_to);
            break;

        case GAP_EVT_PEER_FEATURE:
            LOG_INFO(app_tag, "peer[%d] feats ind\r\n",p_event->param.peer_feature.conidx);
            break;

        case GAP_EVT_MTU:
            LOG_INFO(app_tag, "mtu update,conidx=%d,mtu=%d\r\n"
                      ,p_event->param.mtu.conidx,p_event->param.mtu.value);
            break;
        
        case GAP_EVT_LINK_RSSI:
            LOG_INFO(app_tag, "link rssi %d\r\n",p_event->param.link_rssi);
            break;
                
        case GAP_SEC_EVT_SLAVE_ENCRYPT:
            LOG_INFO(app_tag, "slave[%d]_encrypted\r\n",p_event->param.slave_encrypt_conidx);
            break;

        default:
            break;
    }
}

/*********************************************************************
 * @fn      sp_start_adv
 *
 * @brief   Set advertising data & scan response & advertising parameters and start advertising
 *
 * @param   None. 
 *       
 *
 * @return  None.
 */
static void sp_start_adv(void)
{
    // Set advertising parameters
    gap_adv_param_t adv_param;
    adv_param.adv_mode = GAP_ADV_MODE_UNDIRECT;
    adv_param.adv_addr_type = GAP_ADDR_TYPE_PUBLIC;
    adv_param.adv_chnl_map = GAP_ADV_CHAN_ALL;
    adv_param.adv_filt_policy = GAP_ADV_ALLOW_SCAN_ANY_CON_ANY;
    adv_param.adv_intv_min = 300;
    adv_param.adv_intv_max = 300;
        
    gap_set_advertising_param(&adv_param);
    
    // Set advertising data & scan response data
    gap_set_advertising_data(adv_data, sizeof(adv_data));
    gap_set_advertising_rsp_data(scan_rsp_data, sizeof(scan_rsp_data));
    // Start advertising
    LOG_INFO(app_tag, "Start advertising...\r\n");
    gap_start_advertising(0);
}


/*********************************************************************
 * @fn      simple_peripheral_init
 *
 * @brief   Initialize simple peripheral profile, BLE related parameters.
 *
 * @param   None. 
 *       
 *
 * @return  None.
 */
void simple_peripheral_init(void)
{
    // set local device name
    uint8_t local_name[] = "Simple Peripheral";
    gap_dev_name_set(local_name, sizeof(local_name));
    
    // Initialize security related settings.
    gap_security_param_t param =
    {
        .mitm = false,
        .ble_secure_conn = false,
        .io_cap = GAP_IO_CAP_NO_INPUT_NO_OUTPUT,
        .pair_init_mode = GAP_PAIRING_MODE_WAIT_FOR_REQ,
        .bond_auth = true,
        .password = 0,
    };
    
    gap_security_param_init(&param);
    
    gap_set_cb_func(app_gap_evt_cb);
    
    mac_addr_t addr;
    enum ble_addr_type addr_type;
    gap_address_get(&addr, &addr_type);
    LOG_INFO(app_tag, "Local BDADDR: 0x%2X%2X%2X%2X%2X%2X\r\n", addr.addr[5], addr.addr[4], addr.addr[3], addr.addr[2], addr.addr[1], addr.addr[0]);
    
    // Adding services to database
    sp_gatt_add_service();  
}