#include "ff.h"
#include "FatfsTask.h"

#include "RTCTask.h"

#include "os.h"

#include <stdio.h>
#include <string.h>

FATFS fs;
FIL file;
FRESULT res;

// 初始化，挂载文件系统
void InitFileSystem() {

    // 尝试挂载文件系统
    res = f_mount(&fs, "", 1);
    if (res != FR_OK) {
        // 如果挂载失败，尝试创建文件系统
        MKFS_PARM fs_params = {FM_ANY, 0, 0, 0, 0};
        BYTE work[FF_MAX_SS]; // 工作缓冲区
        res = f_mkfs("", &fs_params, work, sizeof(work));
        if (res != FR_OK) {
            // printf("Failed to create filesystem: %d\n", res);
            return;
        }

        // 重新挂载文件系统
        res = f_mount(&fs, "", 1);
        if (res != FR_OK) {
            // printf("Failed to mount filesystem after creation: %d\n", res);
            return;
        }
    }

    // 创建目录“RTCData”
    res = f_mkdir("RTCData");
    if (res != FR_OK && res != FR_EXIST) {
        // printf("Failed to create directory: %d\n", res);
        return;
    }
}

// 将timeStr放入RTC.txt文件中
void FATFSTask() {
    UINT bw;
    char timeStr[12];
	
//	int i = sizeof(file);
//	printf("Size of file structure: %d bytes\n", i);

    while (1) {
        // 打开文件
        res = f_open(&file, "RTCData/RTC.txt", FA_WRITE | FA_OPEN_ALWAYS);
        if (res != FR_OK) {
            OSTimeDlyHMSM(0, 0, 1, 0);
            continue;
        }

        // 移动到文件末尾
        res = f_lseek(&file, f_size(&file));
        if (res != FR_OK) {
            f_close(&file);
            OSTimeDlyHMSM(0, 0, 1, 0);
            continue;
        }

        while (1) {
            // 获取时间并格式化
            sprintf(timeStr, "%02u:%02u:%02u\n", time.hour, time.minute, time.second);

            // 写入文件
            res = f_write(&file, timeStr, strlen(timeStr), &bw);
            if (res != FR_OK || bw != strlen(timeStr)) {
                break;
            }

            // 刷新文件缓冲区
            res = f_sync(&file);
            if (res != FR_OK) {
                break;
            }

            // 延迟1秒
            OSTimeDlyHMSM(0, 0, 1, 0);
        }

        // 确保文件关闭
         f_close(&file);

        // 延迟1秒后重试
        OSTimeDlyHMSM(0, 0, 1, 0);
    }
}