#include "key.h"

#include <stdio.h>

static bool s_inited;

key_module_t *key_module_s;

void key_init(key_module_t *key_module) {
  key_module_s = key_module;
  s_inited = true;  //标志位说明按键初始化完成

  for (int i = 0; i < key_module_s->nkey; i++) {
    key_module_s->keys[i].cur_state = zks_keep;
    key_module_s->keys[i].last_io_state = key_module_s->keys[i].get_key_state();
    key_module_s->keys[i].after_filter_state = key_module_s->keys[i].get_key_state();
  }
}

void key_do_loop_in_each_period() {
  //如果没初始化则不进行按键扫描
  if (!s_inited) {
    return;
  }

  //按键扫描
  for (int i = 0; i < key_module_s->nkey; i++) {
    // printf("key_name:%s\n", key_module_s->keys[i].name);
    key_process_each(&key_module_s->keys[i]);
  }
}

static void prv_zkey_process_each_after_filter(key_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;
      key_module_s->onkey(each, each->cur_state);
    } else {
      each->cur_state = zks_falling_edge;
      key_module_s->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) {
      key_module_s->onkey(each, each->cur_state);
    }
  }
}

void key_process_each(key_t *each) {
  each->keep_state_count++;

  bool now_io_state = each->get_key_state();  //获取现在的按键io状态 true未按下 false按下

//   if (now_io_state != each->last_io_state) {
//     each->keep_state_count = 0;
//   }

  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);
}