/*
 * tcp_client.c
 *
 *  Created on: Nov 29, 2023
 *      Author: marcr
 */

#include "lwip/opt.h"
#include "lwip/sockets.h"
#include "lwip/api.h"
#include "lwip/sys.h"

#include "tcp_client.h"
#include "string.h"

#define TARGET_HOST_ADDR "192.168.1.46"

#define TARGET_PORT 50000

// Print err via UART and light up LED
void ReportErr(GPIO_TypeDef* LED_PORT, uint16_t LED_PIN, int err);

extern UART_HandleTypeDef huart3;

// Tâche TCP
static void TcpThread(void *arg)
{
	struct sockaddr_in addr;
	int s;
	int err;
//	char numbuf[5];
//	static uint32_t conn_count = 0;

	memset(&addr, 0, sizeof(addr)); // Initialiser adresse comme vide
	addr.sin_len = sizeof(addr); // Taille de l'adresse
	addr.sin_family = AF_INET; // Type d'adresse: adresse Internet IPv4
	addr.sin_port = PP_HTONS(TARGET_PORT); // Mettre dans le bon ordre (endianess) le port de destination
	addr.sin_addr.s_addr = inet_addr(TARGET_HOST_ADDR); // Transformer addresse de chaine de charactère en entier pour pouvoir l'utiliser

	// Créer le socket
	s = lwip_socket(AF_INET, SOCK_STREAM, 0);
	if(s >= 0)
	{
		HAL_UART_Transmit(&huart3, (uint8_t *)"Created\n\r", 10, 5*sizeof(char));
		//LWIP_ASSERT("s >= 0", s >= 0); // Verifie que le socket est bien crée
	}
	else
	{
		HAL_UART_Transmit(&huart3, (uint8_t *)"Could not create socket\n\r", 26*sizeof(char), 6);
		HAL_GPIO_WritePin(LD1_GPIO_Port, LD1_Pin, GPIO_PIN_SET);
	}
	// Connect
	err = lwip_connect(s, (struct sockaddr *)&addr, sizeof(addr));
	if (err == 0)
		HAL_UART_Transmit(&huart3, (uint8_t *)"Connected!\n\r", 13*sizeof(char), 5);
	else
	{
		err = lwip_close(s);
		HAL_UART_Transmit(&huart3, (uint8_t *)"Could not Connect\n\r", 20*sizeof(char), 5);
		ReportErr(LD1_GPIO_Port, LD2_Pin, err);
	}
	err = lwip_write(s, "I3", 2);
	if (err==2)
		HAL_UART_Transmit(&huart3, (uint8_t *)"Sent!\n\r", 8*sizeof(char), 5);
	else
	{
		err = lwip_close(s);
		HAL_UART_Transmit(&huart3, (uint8_t *)"Could not send\n\r", 17*sizeof(char), 5);
		ReportErr(LD2_GPIO_Port, LD3_Pin, err);
	}
	err = lwip_close(s);
	if (err==0)
		HAL_UART_Transmit(&huart3, (uint8_t *)"Closed!\n\r", 10*sizeof(char), 5);
	else
	{
		HAL_UART_Transmit(&huart3, (uint8_t *)"Could not close\n\r", 18*sizeof(char), 5);
		ReportErr(LD3_GPIO_Port, LD3_Pin, err);
	}

	vTaskDelete(NULL);
}

void TcpInit(void)
{
	TaskHandle_t tcp_thread_id;
	xTaskCreate(TcpThread, "TCP", 128 * 4, NULL, osPriorityNormal, &tcp_thread_id);
}

void ReportErr(GPIO_TypeDef* LED_PORT, uint16_t LED_PIN, int err)
{
	char err_buf[10];
	char report_buf[30] = "Error code : ";
	sprintf(err_buf, "%d\n\r", err);
	strcat(report_buf, err_buf);
	HAL_UART_Transmit(&huart3, (uint8_t *)report_buf, sizeof(report_buf), 5);
	HAL_GPIO_WritePin(LED_PORT, LED_PIN, GPIO_PIN_SET);
}