#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/time.h>

int main(int argc, char *argv[]) {
    if (argc < 2) {
        printf("Usage: debug <command> [args...]\n");
        return 1;
    }

    struct timeval start, end;
    
    gettimeofday(&start, NULL);

    pid_t pid = fork();

    if (pid < 0) {
        perror("debug: fork failed");
        return 1;
    }

    if (pid == 0) {
        execvp(argv[1], &argv[1]);
        
        perror("debug: exec failed");
        exit(127);
    } 
    else {
        int status;
        
        waitpid(pid, &status, 0);

        gettimeofday(&end, NULL);

        long seconds = end.tv_sec - start.tv_sec;
        long micros = end.tv_usec - start.tv_usec;
        if (micros < 0) {
            seconds -= 1;
            micros += 1000000;
        }
        double elapsed = seconds + micros / 1000000.0;

        printf("\n\033[1;33m[Debug Report]\033[0m\n");
        printf("Target       : %s\n", argv[1]);
        printf("PID          : %d\n", pid);
        printf("Time Elapsed : %.6f sec\n", elapsed);

        if (WIFEXITED(status)) {
            printf("Exit Code    : %d\n", WEXITSTATUS(status));
        } else if (WIFSIGNALED(status)) {
            printf("Terminated by Signal : %d\n", WTERMSIG(status));
        }
        printf("------------------------------\n");
    }

    return 0;
}