#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include "shared.h"

int main(int argc, char *argv[]) {
    if (argc != 2) {
        fprintf(stderr, "Usage: %s <path-to-job-binary>\n", argv[0]);
        return 1;
    }

    int shm_fd = shm_open(SHM_NAME, O_RDWR, 0666);
    if (shm_fd == -1) {
        perror("shm_open");
        return 1;
    }

    JobQueue *queue = mmap(NULL, sizeof(JobQueue), PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
    if (queue == MAP_FAILED) {
        perror("mmap");
        return 1;
    }

    pthread_mutex_lock(&queue->mutex);
    if ((queue->tail + 1) % MAX_JOBS == queue->head) {
        printf("[addjob] Queue full\n");
    } else {
        strncpy(queue->jobs[queue->tail], argv[1], MAX_PATH);
        queue->tail = (queue->tail + 1) % MAX_JOBS;
        printf("[addjob] Queued job: %s\n", argv[1]);
    }
    pthread_mutex_unlock(&queue->mutex);

    munmap(queue, sizeof(JobQueue));
    close(shm_fd);
    return 0;
}