homeassistant_number.cpp

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#include "homeassistant_number.h"
 
#include <cstring>
 
#include "esphome/components/api/api_pb2.h"
#include "esphome/components/api/api_server.h"
#include "esphome/core/log.h"
#include "esphome/core/string_ref.h"
 
namespace esphome::homeassistant {
 
static const char *const TAG = "homeassistant.number";
 
void HomeassistantNumber::state_changed_(StringRef state) {
  auto number_value = parse_number<float>(state.c_str());
  if (!number_value.has_value()) {
    ESP_LOGW(TAG, "'%s': Can't convert '%s' to number!", this->entity_id_, state.c_str());
    this->publish_state(NAN);
    return;
  }
  if (this->state == number_value.value()) {
    return;
  }
  ESP_LOGD(TAG, "'%s': Got state %s", this->entity_id_, state.c_str());
  this->publish_state(number_value.value());
}
 
void HomeassistantNumber::min_retrieved_(StringRef min) {
  auto min_value = parse_number<float>(min.c_str());
  if (!min_value.has_value()) {
    ESP_LOGE(TAG, "'%s': Can't convert 'min' value '%s' to number!", this->entity_id_, min.c_str());
    return;
  }
  ESP_LOGD(TAG, "'%s': Min retrieved: %s", get_name().c_str(), min.c_str());
  this->traits.set_min_value(min_value.value());
}
 
void HomeassistantNumber::max_retrieved_(StringRef max) {
  auto max_value = parse_number<float>(max.c_str());
  if (!max_value.has_value()) {
    ESP_LOGE(TAG, "'%s': Can't convert 'max' value '%s' to number!", this->entity_id_, max.c_str());
    return;
  }
  ESP_LOGD(TAG, "'%s': Max retrieved: %s", get_name().c_str(), max.c_str());
  this->traits.set_max_value(max_value.value());
}
 
void HomeassistantNumber::step_retrieved_(StringRef step) {
  auto step_value = parse_number<float>(step.c_str());
  if (!step_value.has_value()) {
    ESP_LOGE(TAG, "'%s': Can't convert 'step' value '%s' to number!", this->entity_id_, step.c_str());
    return;
  }
  ESP_LOGD(TAG, "'%s': Step Retrieved %s", get_name().c_str(), step.c_str());
  this->traits.set_step(step_value.value());
}
 
void HomeassistantNumber::setup() {
  api::global_api_server->subscribe_home_assistant_state(this->entity_id_, nullptr,
                                                         [this](StringRef state) { this->state_changed_(state); });
 
  api::global_api_server->get_home_assistant_state(this->entity_id_, "min",
                                                   [this](StringRef min) { this->min_retrieved_(min); });
  api::global_api_server->get_home_assistant_state(this->entity_id_, "max",
                                                   [this](StringRef max) { this->max_retrieved_(max); });
  api::global_api_server->get_home_assistant_state(this->entity_id_, "step",
                                                   [this](StringRef step) { this->step_retrieved_(step); });
}
 
void HomeassistantNumber::dump_config() {
  LOG_NUMBER("", "Homeassistant Number", this);
  ESP_LOGCONFIG(TAG, "  Entity ID: '%s'", this->entity_id_);
}
 
float HomeassistantNumber::get_setup_priority() const { return setup_priority::AFTER_CONNECTION; }
 
void HomeassistantNumber::control(float value) {
  if (!api::global_api_server->is_connected()) {
    ESP_LOGE(TAG, "No clients connected to API server");
    return;
  }
 
#ifdef USE_API_WIZARD_LINKED_INPUTS
  if (this->entity_id_[0] == '\0') {
    ESP_LOGW(TAG, "'%s': No entity ID set yet", this->get_name().c_str());
    return;
  }
#endif
 
  this->publish_state(value);
 
  static constexpr auto NUMBER_SERVICE_NAME = StringRef::from_lit("number.set_value");
  static constexpr auto INPUT_NUMBER_SERVICE_NAME = StringRef::from_lit("input_number.set_value");
  static constexpr char INPUT_PREFIX[] = "input_";
  static constexpr auto ENTITY_ID_KEY = StringRef::from_lit("entity_id");
  static constexpr auto VALUE_KEY = StringRef::from_lit("value");
 
  api::HomeassistantActionRequest resp;
  // input_number entities have their own set_value action
  if (strncmp(this->entity_id_, INPUT_PREFIX, sizeof(INPUT_PREFIX) - 1) == 0) {
    resp.service = INPUT_NUMBER_SERVICE_NAME;
  } else {
    resp.service = NUMBER_SERVICE_NAME;
  }
 
  resp.data.init(2);
  auto &entity_id = resp.data.emplace_back();
  entity_id.key = ENTITY_ID_KEY;
  entity_id.value = StringRef(this->entity_id_);
 
  auto &entity_value = resp.data.emplace_back();
  entity_value.key = VALUE_KEY;
  // Stack buffer - no heap allocation; %g produces shortest representation
  char value_buf[16];
  buf_append_printf(value_buf, sizeof(value_buf), 0, "%g", value);
  entity_value.value = StringRef(value_buf);
 
  api::global_api_server->send_homeassistant_action(resp);
}
 
}  // namespace esphome::homeassistant