#include "arena.h"
#include "ll.h"
#include "encryption.h"
#include "scanner.h"
#include "shared.h"
#include "threadpool.h"

#include <errno.h>
#include <error.h>
#include <threads.h>
#include <unistd.h>
#include <string.h>

typedef int (*thingcb)(void*);
struct thing {
    thingcb cb;
    void *arg;
};

typedef struct queue {
    mtx_t *cqmutex;
    cnd_t *cqcnd;
    unsigned char cstatus;
    
    int len;
    int used;
    
    struct thing **queue;
} ccqueue;

#define QUEUE_LEN 10

int consumer(void *queue) {
    if(!queue)
        thrd_exit(-1);

    ccqueue *real = (ccqueue *)queue;
    for(struct thing *thing = NULL;;) {
        cnd_wait(real->cqcnd, real->cqmutex);
        if(real->cstatus)
            thrd_exit(-1);

        if(real->used > 0) {
            thing = real->queue[real->used - 1];
            real->used--;
        }

        if(thing != NULL)
            if(thing->arg != NULL)
                thing->cb(thing->arg);
    }

    thrd_exit(0);
}

int testcb(void *data) {
    if(!data)
        return -1;

    printf("%s\n", (char*)data);
    return 0;
}

int main() {
    // error(1, ENOTSUP, "No main file lol");

    // Manually implement a threadpool and consumer in a "dumb" way to make sure I'm doing the correct thing
    ccqueue *cqueue = xcalloc(1, sizeof(*cqueue));
    cqueue->cqmutex = xcalloc(1, sizeof(*cqueue->cqmutex)); mtx_init(cqueue->cqmutex, mtx_plain);
    cqueue->cqcnd = xcalloc(1, sizeof(*cqueue->cqcnd)); cnd_init(cqueue->cqcnd);
    cqueue->cstatus = 0;
    cqueue->len = QUEUE_LEN;
    cqueue->used = 0;
    cqueue->queue = xcalloc(cqueue->len, sizeof(struct thing *));

    thrd_t *thread = xcalloc(1, sizeof(*thread));
    thrd_create(thread, consumer, (void *)cqueue);

    mtx_lock(cqueue->cqmutex);
    cqueue->queue[cqueue->used] = xcalloc(1, sizeof(struct thing));
    cqueue->queue[cqueue->used]->cb = testcb;
    cqueue->queue[cqueue->used]->arg = "This is some data";
    cqueue->used++;
    mtx_unlock(cqueue->cqmutex);
    cnd_signal(cqueue->cqcnd);

    sleep(1);
    
    mtx_lock(cqueue->cqmutex);
    cqueue->cstatus++;
    mtx_unlock(cqueue->cqmutex);
    cnd_broadcast(cqueue->cqcnd);

    // Destroy and free everything
    mtx_destroy(cqueue->cqmutex); cnd_destroy(cqueue->cqcnd);
    free(cqueue->cqmutex); free(cqueue->cqcnd);
    free(cqueue->queue);
    free(cqueue);

    return 0;
}

// Ok well now I'm pissed. The canceling works fine but it's not actually consuming the thing