Files
esphome/esphome/components/mqtt/mqtt_light.cpp
J. Nick Koston bf92d94863 [mqtt] Use stack buffers for publish_state() topic building (#13434)
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
2026-01-26 17:25:02 -10:00

102 lines
3.8 KiB
C++

#include "mqtt_light.h"
#include "esphome/core/log.h"
#include "mqtt_const.h"
#ifdef USE_JSON
#ifdef USE_MQTT
#ifdef USE_LIGHT
#include "esphome/components/light/light_json_schema.h"
namespace esphome::mqtt {
static const char *const TAG = "mqtt.light";
using namespace esphome::light;
MQTT_COMPONENT_TYPE(MQTTJSONLightComponent, "light")
const EntityBase *MQTTJSONLightComponent::get_entity() const { return this->state_; }
void MQTTJSONLightComponent::setup() {
this->subscribe_json(this->get_command_topic_(), [this](const std::string &topic, JsonObject root) {
LightCall call = this->state_->make_call();
LightJSONSchema::parse_json(*this->state_, call, root);
call.perform();
});
this->state_->add_remote_values_listener(this);
}
void MQTTJSONLightComponent::on_light_remote_values_update() {
this->defer("send", [this]() { this->publish_state_(); });
}
MQTTJSONLightComponent::MQTTJSONLightComponent(LightState *state) : state_(state) {}
bool MQTTJSONLightComponent::publish_state_() {
char topic_buf[MQTT_DEFAULT_TOPIC_MAX_LEN];
return this->publish_json(this->get_state_topic_to_(topic_buf), [this](JsonObject root) {
// NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
LightJSONSchema::dump_json(*this->state_, root);
});
}
LightState *MQTTJSONLightComponent::get_state() const { return this->state_; }
void MQTTJSONLightComponent::send_discovery(JsonObject root, mqtt::SendDiscoveryConfig &config) {
// NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
root[ESPHOME_F("schema")] = ESPHOME_F("json");
auto traits = this->state_->get_traits();
root[MQTT_COLOR_MODE] = true;
// NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
JsonArray color_modes = root[ESPHOME_F("supported_color_modes")].to<JsonArray>();
if (traits.supports_color_mode(ColorMode::ON_OFF))
color_modes.add(ESPHOME_F("onoff"));
if (traits.supports_color_mode(ColorMode::BRIGHTNESS))
color_modes.add(ESPHOME_F("brightness"));
if (traits.supports_color_mode(ColorMode::WHITE))
color_modes.add(ESPHOME_F("white"));
if (traits.supports_color_mode(ColorMode::COLOR_TEMPERATURE) ||
traits.supports_color_mode(ColorMode::COLD_WARM_WHITE))
color_modes.add(ESPHOME_F("color_temp"));
if (traits.supports_color_mode(ColorMode::RGB))
color_modes.add(ESPHOME_F("rgb"));
if (traits.supports_color_mode(ColorMode::RGB_WHITE) ||
// HA doesn't support RGBCT, and there's no CWWW->CT emulation in ESPHome yet, so ignore CT control for now
traits.supports_color_mode(ColorMode::RGB_COLOR_TEMPERATURE))
color_modes.add(ESPHOME_F("rgbw"));
if (traits.supports_color_mode(ColorMode::RGB_COLD_WARM_WHITE))
color_modes.add(ESPHOME_F("rgbww"));
// legacy API
if (traits.supports_color_capability(ColorCapability::BRIGHTNESS))
root[ESPHOME_F("brightness")] = true;
if (traits.supports_color_mode(ColorMode::COLOR_TEMPERATURE) ||
traits.supports_color_mode(ColorMode::COLD_WARM_WHITE)) {
root[MQTT_MIN_MIREDS] = traits.get_min_mireds();
root[MQTT_MAX_MIREDS] = traits.get_max_mireds();
}
if (this->state_->supports_effects()) {
root[ESPHOME_F("effect")] = true;
JsonArray effect_list = root[MQTT_EFFECT_LIST].to<JsonArray>();
for (auto *effect : this->state_->get_effects()) {
// c_str() is safe as effect names are null-terminated strings from codegen
effect_list.add(effect->get_name().c_str());
}
effect_list.add(ESPHOME_F("None"));
}
}
bool MQTTJSONLightComponent::send_initial_state() { return this->publish_state_(); }
void MQTTJSONLightComponent::dump_config() {
ESP_LOGCONFIG(TAG, "MQTT Light '%s':", this->state_->get_name().c_str());
LOG_MQTT_COMPONENT(true, true);
}
} // namespace esphome::mqtt
#endif
#endif // USE_MQTT
#endif // USE_JSON