/*
 * ESPRESSIF MIT License
 *
 * Copyright (c) 2018 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
 *
 * Permission is hereby granted for use on all ESPRESSIF SYSTEMS products, in
 * which case, it is free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the
 * Software without restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#include "periph_adc_button.h"

#include <string.h>

#include "audio_error.h"
#include "audio_mem.h"
#include "esp_log.h"

static const char *TAG = "PERIPH_ADC_BUTTON";

typedef struct {
  int adc_channels;
  adc_btn_list *list;
  adc_btn_task_cfg_t task_cfg;
} periph_adc_btn_t;

static void btn_cb(void *user_data, int adc, int id, adc_btn_state_t state) {
  esp_periph_handle_t self = (esp_periph_handle_t)user_data;
  periph_adc_button_event_id_t event_id = PERIPH_ADC_BUTTON_IDLE;
  if (state == ADC_BTN_STATE_PRESSED) {
    event_id = PERIPH_ADC_BUTTON_PRESSED;
  } else if (state == ADC_BTN_STATE_LONG_PRESSED) {
    event_id = PERIPH_ADC_BUTTON_LONG_PRESSED;
  } else if (state == ADC_BTN_STATE_RELEASE) {
    event_id = PERIPH_ADC_BUTTON_RELEASE;
  } else if (state == ADC_BTN_STATE_LONG_RELEASE) {
    event_id = PERIPH_ADC_BUTTON_LONG_RELEASE;
  }
  // Send ID as data and ADC as data_len
  esp_periph_send_event(self, event_id, (void *)id, adc);
}

static esp_err_t _adc_button_destroy(esp_periph_handle_t self) {
  periph_adc_btn_t *periph_adc_btn = esp_periph_get_data(self);
  adc_btn_delete_task();
  adc_btn_destroy_list(periph_adc_btn->list);
  audio_free(periph_adc_btn);
  return ESP_OK;
}

static esp_err_t _adc_button_init(esp_periph_handle_t self) {
  periph_adc_btn_t *periph_adc_btn = esp_periph_get_data(self);
  adc_btn_init((void *)self, btn_cb, periph_adc_btn->list,
               &periph_adc_btn->task_cfg);
  return ESP_OK;
}

esp_periph_handle_t periph_adc_button_init(periph_adc_button_cfg_t *config) {
  esp_periph_handle_t periph =
      esp_periph_create(PERIPH_ID_ADC_BTN, "periph_adc_btn");
  AUDIO_MEM_CHECK(TAG, periph, return NULL);

  periph_adc_btn_t *periph_adc_btn = audio_calloc(1, sizeof(periph_adc_btn_t));
  AUDIO_MEM_CHECK(TAG, periph_adc_btn, {
    audio_free(periph);
    return NULL;
  });
  periph_adc_btn->adc_channels = config->arr_size;
  periph_adc_btn->list = adc_btn_create_list(config->arr, config->arr_size);
  memcpy(&periph_adc_btn->task_cfg, &config->task_cfg,
         sizeof(adc_btn_task_cfg_t));
  AUDIO_MEM_CHECK(TAG, periph_adc_btn->list, {
    audio_free(periph);
    audio_free(periph_adc_btn);
    return NULL;
  });

  esp_periph_set_data(periph, periph_adc_btn);
  esp_periph_set_function(periph, _adc_button_init, NULL, _adc_button_destroy);
  return periph;
}