#pragma once

#include <cstdint>

namespace kvida {

// Starts mDNS-based MQTT broker discovery (_mqtt._tcp) and, once found,
// connects the MQTT client and publishes Home Assistant MQTT Discovery
// for a diagnostic "connectivity" entity. Safe to call multiple times
// (no-op if already connecting/connected). No public-facing semantic
// publish(topic, value) API yet -- deferred until `profiles` has real
// sensor data to publish (see components/transport/README.md).
void start_mqtt();

bool mqtt_connected();

// Publishes (retained) Home Assistant MQTT Discovery for a diagnostic
// "Chip temperature" sensor on first call, then the reading itself.
// Quick end-to-end proof that a real Sensor implementation's data can
// reach MQTT/HA -- not the eventual generic publish(topic, value) API.
void publish_chip_temperature(float celsius);

// Registered by main to receive "set LED color" commands from Home
// Assistant (an RGB light entity) without transport depending on
// `drivers` directly.
using LedColorHandler = void (*)(uint8_t red, uint8_t green, uint8_t blue);
void set_led_color_handler(LedColorHandler handler);

} // namespace kvida