#pragma once

#include <c-rbtree.h>

#include <c-stdaux.h>

#include <inttypes.h>

#include <stdlib.h>

#include <time.h>

#include <unistd.h>

typedef struct Timer Timer;

typedef struct Timeout Timeout;

enum {

        _TIMER_E_SUCCESS,

        TIMER_E_TRIGGERED,

        _TIMER_E_N,

};

struct Timer {

        int fd;

        clockid_t clock;

        CRBTree tree;

        uint64_t scheduled_timeout;

};

#define TIMER_NULL(_x) {                                                        \

                .fd = -1,                                                       \

                .tree = C_RBTREE_INIT,                                          \

        }

struct Timeout {

        Timer *timer;

        CRBNode node;

        uint64_t timeout;

};

#define TIMEOUT_INIT(_x) {                                                      \

                .node = C_RBNODE_INIT((_x).node),                               \

        }

int timer_init(Timer *timer);

void timer_deinit(Timer *timer);

void timer_now(Timer *timer, uint64_t *nowp);

int timer_pop_timeout(Timer *timer, uint64_t now, Timeout **timerp);

void timer_rearm(Timer *timer);

int timer_read(Timer *timer);

void timeout_schedule(Timeout *timeout, Timer *timer, uint64_t time);

void timeout_unschedule(Timeout *timeout);