/*
    cli Task
    模拟命令行
*/

/* Includes ----------------------------------------------------------------- */
#include "task/user_task.h"
/* USER INCLUDE BEGIN*/
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>

#include "FreeRTOS.h"
#include "bsp/usb.h"
#include "component/FreeRTOS_CLI.h"
#include "task.h"

/* USER INCLUDE END*/

/* Private typedef ---------------------------------------------------------- */
/* Private define ----------------------------------------------------------- */
/* Private macro ------------------------------------------------------------ */
/* Private variables -------------------------------------------------------- */
/* USER STRUCT BEGIN*/
#define CLI_INPUT_BUF_SIZE 128
#define CLI_PROMPT "mr> "
static char cli_input_buf[CLI_INPUT_BUF_SIZE];
static uint16_t cli_input_len = 0;

/* htop命令实现 */
static BaseType_t htop_cmd(char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString) {
    (void)pcCommandString;
    // vTaskList(pcWriteBuffer); // FreeRTOS自带任务列表
    return pdFALSE;
}

/* 注册htop命令 */
static void cli_register_commands(void) {
    static const CLI_Command_Definition_t htop_cmd_def = {
        "htop",
        "htop: 显示FreeRTOS任务状态\r\n",
        htop_cmd,
        0
    };
    FreeRTOS_CLIRegisterCommand(&htop_cmd_def);
}

/* USER STRUCT END*/

/* Private function --------------------------------------------------------- */
/* Exported functions ------------------------------------------------------- */
void Task_cli(void *argument) {
  (void)argument; /* 未使用argument，消除警告 */

  
  osDelay(CLI_INIT_DELAY); /* 延时一段时间再开启任务 */

  /* USER CODE INIT BEGIN*/

  cli_register_commands();

  BSP_USB_Printf("\r\n欢迎使用命令行，输入 help 查看命令\r\n");
  BSP_USB_Printf(CLI_PROMPT);
  /* USER CODE INIT END*/

  while (1) {
    /* USER CODE BEGIN */
        char ch = BSP_USB_ReadChar();

        if (ch) {
            // 回显
            BSP_USB_Printf("%c", ch);

            // 处理回车
            if (ch == '\r' || ch == '\n') {
                BSP_USB_Printf("\r\n");
                cli_input_buf[cli_input_len] = '\0';

                if (cli_input_len > 0) {
                    char *output_buf = FreeRTOS_CLIGetOutputBuffer();
                    BaseType_t more_output;
                    do {
                        more_output = FreeRTOS_CLIProcessCommand(cli_input_buf, output_buf, configCOMMAND_INT_MAX_OUTPUT_SIZE);
                        BSP_USB_Printf("%s", output_buf);
                    } while (more_output != pdFALSE);
                }

                cli_input_len = 0;
                memset(cli_input_buf, 0, sizeof(cli_input_buf));
                BSP_USB_Printf(CLI_PROMPT);
            }
            // 处理退格
            else if (ch == 0x7F || ch == '\b') {
                if (cli_input_len > 0) {
                    cli_input_len--;
                    BSP_USB_Printf("\b \b"); // 退格回显
                }
            }
            // 普通字符
            else if (cli_input_len < CLI_INPUT_BUF_SIZE - 1 && ch >= 32 && ch <= 126) {
                cli_input_buf[cli_input_len++] = ch;
            }
        }
    /* USER CODE END */
  }
  
}