#include "key.h"
static zkey_module_t *s_module;
static bool s_inited;

static void prv_zkey_process_each_after_filter(zkey_t *each, bool now_io_state) {
  if (now_io_state != each->last_io_state) {
    if (now_io_state) {
      each->keep_state_count = 0;
      each->hasProcessed = false;
      each->cur_state = zks_rising_edge;
      s_module->onkey(each, each->cur_state);
    } else {
      each->cur_state = zks_falling_edge;
      s_module->onkey(each, each->cur_state);
      each->keep_state_count = 0;
    }
    each->last_io_state = now_io_state;
  } else {
    each->cur_state = zks_keep;
    if (now_io_state) {
      s_module->onkey(each, each->cur_state);
    }
  }
}

void zkey_process_each(zkey_t *each);

void zkey_init(zkey_module_t *module) {
  /**
   * @brief 按键初始化，三个状态的初始化，之前的，现在的，之后的
   *
   */
  s_module = module;
  s_inited = true;  //标志位说明按键初始化完成

  for (int i = 0; i < s_module->nkey; i++) {
    s_module->keys[i].cur_state = zks_keep;
    s_module->keys[i].last_io_state = s_module->keys[i].get_key_state();
    s_module->keys[i].after_filter_state = s_module->keys[i].get_key_state();
  }
}
void zkey_process_each(zkey_t *each) {
  /**
   * @brief 按键是否发生变换，没变换的时候进行时间记录
   *
   * @param each
   */
  each->keep_state_count++;

  bool now_io_state = each->get_key_state();  //获取现在的按键io状态
  if (each->currentstatekeep_count < 1000) {
    each->currentstatekeep_count++;
  }
  if (now_io_state != each->last_real_state)  //发生变换
  {
    each->currentstatekeep_count = 0;
  }
  if (each->currentstatekeep_count >= 1)  //按键状态保持时间大于20ms,更新按键状态
  {
    each->after_filter_state = now_io_state;
  }
  each->last_real_state = now_io_state;
  prv_zkey_process_each_after_filter(each, each->after_filter_state);
}

void zkey_do_loop_in_each_period(void *_null) { /**
                                                 * @brief 循环查询按键的状态
                                                 *
                                                 */
  if (!s_inited) return;
  for (int i = 0; i < s_module->nkey; i++)  //开始对每个按键进行查询
  {
    zkey_process_each(&s_module->keys[i]);
  }
}