/*
 * p9_mkdir_probe.c — target-регрессия validator и libc mkdir/rmdir.
 */

#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include "sc_path.h"

static int result_fd = -1;
static uint8_t failures;
static char cwd_before[256];
static char cwd_after[256];
static char joined[256];

static void log_text(const char *text)
{
    const char *end = text;
    while (*end != '\0') end++;
    if (result_fd >= 0) {
        (void)write(result_fd, text, (uint16_t)(end - text));
    }
}

static void check(uint8_t condition, const char *name)
{
    log_text(condition ? "PASS " : "FAIL ");
    if (!condition) failures++;
    log_text(name);
    log_text("\r\n");
}

int main(void)
{
    int rc;

    result_fd = open("D:\\MKRES.TXT", O_WRONLY | O_CREAT | O_TRUNC);
    check(sc_path_validate_component("A") == 0 &&
          sc_path_validate_component("ABCDEFGH") == 0 &&
          sc_path_validate_component("ABCDEFGH.XYZ") == 0 &&
          sc_path_validate_component("A_B-1.2") == 0,
          "valid DOS 8.3 components accepted");
    check(sc_path_validate_component("") != 0 &&
          sc_path_validate_component(".") != 0 &&
          sc_path_validate_component("..") != 0 &&
          sc_path_validate_component("ABCDEFGHI") != 0 &&
          sc_path_validate_component("A.ABCD") != 0 &&
          sc_path_validate_component("A.B.C") != 0,
          "length and dot violations rejected");
    check(sc_path_validate_component("BAD\\NAME") != 0 &&
          sc_path_validate_component("BAD/NAME") != 0 &&
          sc_path_validate_component("*.BIN") != 0 &&
          sc_path_validate_component("BAD NAME") != 0,
          "path injection and wildcard rejected");
    check(sc_path_join(joined, sizeof(joined),
                       "D:\\MKTEST", "NEWDIR") == 0 &&
          strcmp(joined, "D:\\MKTEST\\NEWDIR") == 0,
          "validated component joins full path");

    check(getcwd(cwd_before, sizeof(cwd_before)) != 0,
          "CWD captured before mkdir");
    (void)rmdir("D:\\MKTEST\\PROBE");
    errno = 0;
    rc = mkdir("D:\\MKTEST\\PROBE");
    check(rc == 0, "mkdir creates directory");
    errno = 0;
    rc = mkdir("D:\\MKTEST\\PROBE");
    check(rc != 0 && (errno == EEXIST || errno == EISDIR),
          "duplicate mkdir is managed error");
    check(rmdir("D:\\MKTEST\\PROBE") == 0,
          "rmdir removes probe directory");
    check(getcwd(cwd_after, sizeof(cwd_after)) != 0 &&
          strcmp(cwd_before, cwd_after) == 0,
          "mkdir/rmdir preserve process CWD");

    if (failures == 0u) log_text("ALL PASS\r\n");
    if (result_fd >= 0) (void)close(result_fd);
    return failures;
}