/**
 * @file ls.c
 * @brief List directory contents.
 *
 * Lists entries in the current working directory (from the CWD
 * environment variable). Uses the SYS_READDIR syscall to enumerate
 * directory entries.
 */

#include "syscalls.h"

int main(void) {
    /* Check for an explicit path argument first */
    char cwd[128];
    if (getenv("ARG1", cwd, sizeof(cwd)) < 0 || cwd[0] == '\0') {
        /* No argument; use the current working directory */
        if (getenv("CWD", cwd, sizeof(cwd)) < 0) {
            cwd[0] = '/';
            cwd[1] = '\0';
        }
    }

    char name[128];
    uint32_t idx = 0;
    int32_t type;

    while ((type = readdir(cwd, idx, name)) >= 0) {
        puts(name);
        if (type == 2) {
            /* Directory: append / indicator */
            putchar('/');
        }
        putchar('\n');
        idx++;
    }

    return 0;
}