/**
*     Copyright (c) 2023, Nations Technologies Inc.
* 
*     All rights reserved.
*
*     This software is the exclusive property of Nations Technologies Inc. (Hereinafter 
* referred to as NATIONS). This software, and the product of NATIONS described herein 
* (Hereinafter referred to as the Product) are owned by NATIONS under the laws and treaties
* of the People's Republic of China and other applicable jurisdictions worldwide.
*
*     NATIONS does not grant any license under its patents, copyrights, trademarks, or other 
* intellectual property rights. Names and brands of third party may be mentioned or referred 
* thereto (if any) for identification purposes only.
*
*     NATIONS reserves the right to make changes, corrections, enhancements, modifications, and 
* improvements to this software at any time without notice. Please contact NATIONS and obtain 
* the latest version of this software before placing orders.

*     Although NATIONS has attempted to provide accurate and reliable information, NATIONS assumes 
* no responsibility for the accuracy and reliability of this software.
* 
*     It is the responsibility of the user of this software to properly design, program, and test 
* the functionality and safety of any application made of this information and any resulting product. 
* In no event shall NATIONS be liable for any direct, indirect, incidental, special,exemplary, or 
* consequential damages arising in any way out of the use of this software or the Product.
*
*     NATIONS Products are neither intended nor warranted for usage in systems or equipment, any
* malfunction or failure of which may cause loss of human life, bodily injury or severe property 
* damage. Such applications are deemed, "Insecure Usage".
*
*     All Insecure Usage shall be made at user's risk. User shall indemnify NATIONS and hold NATIONS 
* harmless from and against all claims, costs, damages, and other liabilities, arising from or related 
* to any customer's Insecure Usage.

*     Any express or implied warranty with regard to this software or the Product, including,but not 
* limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement
* are disclaimed to the fullest extent permitted by law.

*     Unless otherwise explicitly permitted by NATIONS, anyone may not duplicate, modify, transcribe
* or otherwise distribute this software for any purposes, in whole or in part.
*
*     NATIONS products and technologies shall not be used for or incorporated into any products or systems
* whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 
* User shall comply with any applicable export control laws and regulations promulgated and administered by 
* the governments of any countries asserting jurisdiction over the parties or transactions.
**/

/**
*\*\file main.c
*\*\author Nations
*\*\version v1.0.0
*\*\copyright Copyright (c) 2023, Nations Technologies Inc. All rights reserved.
**/

#include "main.h"
#include "tcp_server.h"

#include <lwip/opt.h>
#include <lwip/arch.h>
#include "tcpip.h"
#include "lwip/init.h"
#include "lwip/netif.h"
#include "ethernetif.h"
#include "netif/ethernet.h"
#include "lwip/def.h"
#include "lwip/stats.h"
#include "lwip/etharp.h"
#include "lwip/ip.h"
#include "lwip/timeouts.h"

#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"

struct netif sNetif;
ip4_addr_t ipaddr;
ip4_addr_t netmask;
ip4_addr_t gw;

/* Creating task handle */
static TaskHandle_t NetworkApplicationTaskHandle = NULL;


/* configCHECK_FOR_STACK_OVERFLOW is defined in the FreeRTOSConfig.h file */
#if configCHECK_FOR_STACK_OVERFLOW
/**
*\*\name    vApplicationStackOverflowHook.
*\*\fun     The application stack overflow hook is called when a stack
*\*\        overflow is detected for a task.
*\*\param   xTask
*\*\         - The task that just exceeded its stack boundaries
*\*\param   pcTaskName
*\*\         - A character string containing the name of the offending task
*\*\return  none
**/
void vApplicationStackOverflowHook(TaskHandle_t xTask, char *pcTaskName)
{
    printf("Stack overflow!!\n");
}
#endif

/* configUSE_MALLOC_FAILED_HOOK is defined in the FreeRTOSConfig.h file */
#if configUSE_MALLOC_FAILED_HOOK
/**
*\*\name    vApplicationMallocFailedHook.
*\*\fun     Hook function called when memory allocation fails.
*\*\param   none
*\*\return  none
**/
void vApplicationMallocFailedHook(void)
{
    printf("Malloc failed!!\n");
}
#endif

/**
*\*\name    NetworkInitialize.
*\*\fun     Network initialization, including add network interfaces,
*\*\        Initialize and configure ETH, Initialize LwIP stack, etc.
*\*\param   none
*\*\return  none
**/
void NetworkInitialize(void)
{
    /* IP addresses initialization */
    IP4_ADDR(&ipaddr, IP_ADDR0, IP_ADDR1, IP_ADDR2, IP_ADDR3);
    IP4_ADDR(&netmask, NETMASK_ADDR0, NETMASK_ADDR1, NETMASK_ADDR2, NETMASK_ADDR3);
    IP4_ADDR(&gw, GW_ADDR0, GW_ADDR1, GW_ADDR2, GW_ADDR3);
    
    /* Initializes the LwIP stack and starts the tcpip_thread thread */
    tcpip_init(NULL, NULL);

    /* Add the network interface (IPv4/IPv6) */
    netif_add(&sNetif, &ipaddr, &netmask, &gw, NULL, &ethernetif_init, &tcpip_input);

    /* Registers the default network interface */
    netif_set_default(&sNetif);

    if (netif_is_link_up(&sNetif))
    {
        /* When the netif is fully configured this function must be called */
        netif_set_up(&sNetif);
    }
    else
    {
        /* When the netif link is down this function must be called */
        netif_set_down(&sNetif);
    }
}

/**
*\*\name    NetworkApplicationTask.
*\*\fun     Task entry function, called when creating a thread.
*\*\param   none
*\*\return  none
**/
static void NetworkApplicationTask(void)
{
    /* Network initialization, adding network interfaces */
    NetworkInitialize();
    
    /* Link successful, print local IP information */
    if (netif_is_up(&sNetif))
    {
        log_info("Network connection successful\n");
        log_info("Local IP: %s\n", ipaddr_ntoa(&sNetif.ip_addr));
        log_info("Netmask: %s\n", ipaddr_ntoa(&sNetif.netmask));
        log_info("Gateway: %s\n", ipaddr_ntoa(&sNetif.gw));
    }
    else
    {
        log_info("Network not connected\n");
        while (1)
        {
            /* System can switch to other tasks */
            vTaskDelay(5);
        }
    }
    
    /* Initialize TCP server task */
    tcp_server_init();
    
    /* Close the task */
    vTaskDelete(NetworkApplicationTaskHandle);
}

/**
*\*\name    main.
*\*\fun     Main program.
*\*\param   none
*\*\return  none
**/
int main(void)
{
    BaseType_t xReturn = pdFAIL;
    
    log_init();
    
    log_info("ETH TCP server (with FreeRTOS) demo go...\r\n\r\n");
    
    /* Creates a Network Application Task */
    xReturn = xTaskCreate( /* Task entry function */
                          (TaskFunction_t)NetworkApplicationTask,
                           /* Task name */
                          (const char *)"NetworkApplicationTask",
                           /* Task stack size */
                          (uint16_t)NETWORK_APP_TASK_STACK_SIZE,
                           /* Task entry function parameter */
                          (void *)NULL,
                           /* Task priority */
                          (UBaseType_t)NETWORK_APP_TASK_PRIORITY,
                           /* Task handle pointer */
                          (TaskHandle_t *)&NetworkApplicationTaskHandle);
    
    if (xReturn == pdPASS)
    {
        /* Task created successfully, start scheduling */
        vTaskStartScheduler();
    }
    else
    {
        /* Task creation failed, print message */
        log_info("Task <<NetworkApplicationTask>> creation failed!!\r\n");
    }
    
    while (1);
}

