#pragma once

#include "esp_err.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

typedef void (*mqtt_transport_connected_fn_t)(void *ctx);
typedef void (*mqtt_transport_message_fn_t)(const char *topic, size_t topic_len,
                                             const char *data, size_t data_len, void *ctx);
typedef void (*mqtt_transport_heartbeat_fn_t)(void *ctx);
typedef struct {
    const char *broker_uri;
    const char *client_id;
    const char *last_will_topic;
    const char *last_will_payload;
    uint32_t heartbeat_interval_seconds;
    mqtt_transport_connected_fn_t on_connected;
    mqtt_transport_message_fn_t on_message;
    mqtt_transport_heartbeat_fn_t on_heartbeat;
    void *ctx;
} mqtt_transport_config_t;
esp_err_t mqtt_transport_start(const mqtt_transport_config_t *config);
int mqtt_transport_publish(const char *topic, const char *payload, int qos, bool retain);
int mqtt_transport_subscribe(const char *topic, int qos);