/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* 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.
*/
/**
  ******************************************************************************
  * @file    BlueNRGGattServer.cpp
  * @author  STMicroelectronics
  * @brief   Header file for BLE_API GattServer Class
  ******************************************************************************
  * @copy
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
  */

#ifndef __BLUENRG_GATT_SERVER_H__
#define __BLUENRG_GATT_SERVER_H__

#ifdef YOTTA_CFG_MBED_OS
    #include "mbed-drivers/mbed.h"
#else
    #include "mbed.h"
#endif 
#include "ble/blecommon.h"
#include "btle.h"
#include "ble/GattService.h"
#include "ble/GattServer.h"
#include <vector>
#include <map>

#define BLE_TOTAL_CHARACTERISTICS 10

using namespace std;

class BlueNRGGattServer : public GattServer
{
public:
    static BlueNRGGattServer &getInstance() {
        static BlueNRGGattServer m_instance;
        return m_instance;
    }

    enum HandleEnum_t {
        CHAR_HANDLE = 0,
        CHAR_VALUE_HANDLE,
        CHAR_DESC_HANDLE
    };

    /* Functions that must be implemented from GattServer */
    virtual ble_error_t addService(GattService &);
    virtual ble_error_t read(GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP);
    virtual ble_error_t read(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP);
    virtual ble_error_t write(GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false);
    virtual ble_error_t write(Gap::Handle_t connectionHandle, GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false);
    virtual ble_error_t initializeGATTDatabase(void);

    virtual bool isOnDataReadAvailable() const {
        return true;
    }

    virtual ble_error_t reset(void);

    /* BlueNRG Functions */
    void eventCallback(void);
    //void hwCallback(void *pckt);
    ble_error_t Read_Request_CB(uint16_t attributeHandle);
    uint8_t Write_Request_CB(
        uint16_t connection_handle, uint16_t attr_handle,
        uint8_t data_length, const uint8_t* data
    );
    GattCharacteristic* getCharacteristicFromHandle(uint16_t charHandle);
    void HCIDataWrittenEvent(const GattWriteCallbackParams *params);
    void HCIDataReadEvent(const GattReadCallbackParams *params);
    void HCIEvent(GattServerEvents::gattEvent_e type, uint16_t charHandle);
    void HCIDataSentEvent(unsigned count);

private:

    // compute the number of attribute record needed by a service
    static uint16_t computeAttributesRecord(GattService& service);


    static const int MAX_SERVICE_COUNT = 10;
    uint8_t serviceCount;
    uint8_t characteristicCount;
    uint16_t servHandle, charHandle;

    std::map<uint16_t, uint16_t> bleCharHandleMap;  // 1st argument is characteristic, 2nd argument is service
    GattCharacteristic *p_characteristics[BLE_TOTAL_CHARACTERISTICS];
    uint16_t bleCharacteristicHandles[BLE_TOTAL_CHARACTERISTICS];

    BlueNRGGattServer() {
        serviceCount = 0;
        characteristicCount = 0;
    };

    BlueNRGGattServer(BlueNRGGattServer const &);
    void operator=(BlueNRGGattServer const &);

    static const int CHAR_DESC_TYPE_16_BIT=0x01;
    static const int CHAR_DESC_TYPE_128_BIT=0x02;
    static const int CHAR_DESC_SECURITY_PERMISSION=0x00;
    static const int CHAR_DESC_ACCESS_PERMISSION=0x03;
    static const int CHAR_ATTRIBUTE_LEN_IS_FIXED=0x00;
};

#endif