/*
 * Copyright (c) 2006-2019, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author          Notes
 * 2019-08-15     xiangxistu      the first version
 */

#ifndef __PPP_DEVICE_H__
#define __PPP_DEVICE_H__

#include <rtdef.h>

#include <netif/ppp/ppp.h>
#include <netif/ppp/pppos.h>
#include <netif/ppp/pppapi.h>
#include <lwip/dns.h>
#include <lwip/netif.h>

//#define PPP_DEVICE_DEBUG
//#define PPP_DEVICE_DEBUG_TX
//#define PPP_DEVICE_DEBUG_RX

#ifndef PPP_DEVICE_NAME
#define PPP_DEVICE_NAME "pp"
#endif

#define PPP_DAIL_CMD         "ATD*99#"                                  /* common dailing cmd */
#ifndef PPP_USING_PUBLIC_APN
#define PPP_APN_CMD          "AT+CGDCONT=1,\"IP\","PPP_PRIVATE_APN
#else
#ifdef  PPP_APN_CMCC
#define PPP_APN_CMD          "AT+CGDCONT=1,\"IP\",\"CMNET\""            /* China Mobile Communication Company */
#endif
#ifdef  PPP_APN_CUCC
#define PPP_APN_CMD          "AT+CGDCONT=1,\"IP\",\"UNINET\""           /* China Unicom Communication Company */
#endif
#ifdef  PPP_APN_CTCC
#define PPP_APN_CMD          "AT+CGDCONT=1,\"IP\",\"CTNET\""            /* China Telecom Communication Company */
#endif
#endif
#define PPP_CTL_GET_CSQ      1
#define PPP_CTL_GET_IEMI     2
#define PPP_CTL_GET_TYPE     3
#define PPP_CTL_PREPARE      10

#define PPP_FRAME_MAX       1550
#define PPP_DROP_BUF        PPP_FRAME_MAX


#define PPP_DEVICE_SW_VERSION           "1.2.0"
#define PPP_DEVICE_SW_VERSION_NUM       0x10200

enum ppp_trans_type
{
    PPP_TRANS_CHAT,
    PPP_TRANS_AT_CLIENT
};

enum ppp_conn_type
{
    PPP_CONNET_UART,                            /* using uart connect ppp */
    PPP_CONNET_USB                              /* using  usb connect ppp */
};

/**
 * @brief PPPoS Client IP Information
 *
 */
struct ppp_device
{
    struct rt_device parent;                    /* join rt_device frame */
    rt_device_t uart;                           /* low-level uart device object */
    const struct ppp_device_ops *ops;           /* ppp device ops interface */
    enum ppp_conn_type conn_type;               /* using usb or uart */
    rt_base_t power_pin;                        /* power pin, if device need hardware reset */

    ppp_pcb *pcb;                               /* ppp protocol control block */
    struct netif pppif;

#ifdef PPP_DEVICE_DEBUG_DROP
    rt_size_t  dropcnt;                         /* counter of drop bytes */
    rt_size_t  droppos;                         /* valid size of drop buffer */
    rt_uint8_t dropbuf[PPP_DROP_BUF];           /* drop buffer */
#endif

    rt_size_t  rxpos;                           /* valid size of receive frame buffer */
    rt_uint8_t rxbuf[PPP_FRAME_MAX];            /* receive frame buffer */
    rt_uint8_t state;                           /* internal state */

    struct rt_event event;                      /* interthread communication */

    rt_thread_t recv_tid;                       /* recieve thread point */
    void *user_data;                            /* reserve */
};

struct ppp_device_ops
{
    rt_err_t  (*prepare)   (struct ppp_device *dev);
};

enum ppp_reci_status
{
    PPP_DATA_VERIFY,
    PPP_DATA_START,
    PPP_DATA_END
};

/* store at_client rx_callback function */
typedef  rt_err_t (*uart_rx_cb)(rt_device_t dev, rt_size_t size);

/* offer register funciton to user */
int ppp_device_register(struct ppp_device *ppp_device, const char *dev_name, const char *uart_name, void *user_data);
int ppp_device_attach(struct ppp_device *ppp_device, const char *uart_name, void *user_data);
int ppp_device_detach(struct ppp_device *ppp_device);

#endif /* __PPP_DEVICE_H__ */