#include "Arduino.h"
#include <deque>
#include <esp_system.h> //mem
std::deque<char*>  v_audioContent;
using namespace std;
void vector_clear_and_shrink(deque<char*>&vec);

void setup() {
  Serial.begin(115200);
  uint32_t ms = millis();
  Serial.println("BEGIN------------------------");

  mem();

  for (uint8_t f = 0; f < 10; f++)
  {
    add();
    while (v_audioContent.size() > 0) {
      //     const char* s = (const char*)v_audioContent.front();
      //     Serial.printf("%s\n", s);
      Serial.printf("%s\n", v_audioContent.front());
      v_audioContent.pop_front();
    }


    if (v_audioContent.empty())
      vector_clear_and_shrink(v_audioContent); // free memory

    Serial.print("FOR------------------------:");
    Serial.println(f);
    mem();
  }

  Serial.println("END deque------------------------");
  mem();

  Serial.print("TIME:"); Serial.println(millis() - ms);
}

void loop() {
  delay(1000);
}
//-----------------------------ADD
void add() {
  String ruString;
  /*
    //v_audioContent.insert(v_audioContent.begin(), strdup(file.path()));
    String s = "Привет 1234ж;";
    //v_audioContent.insert(v_audioContent.begin(), strdup(s));
    v_audioContent.push_back(strdup(s.c_str()));
    const char* c = "2Привет 1234ж;2";
    v_audioContent.push_back( strdup(c));
    c = "3Привет 1234ж;3";

    v_audioContent.push_back( strdup(c));
  */
  char* p;
  for (int n = 0; n < 1000; n++)
  {
    ruString = String(n);
    p = strdup (ruString.c_str());
    v_audioContent.push_back((char*)p);
    // Serial.println(v_audioContent.back());
    //Serial.println(p);
    //free(p);

  }
  // free(p);
  //Serial.println("END-------ADD");
}
//-----------------------------FREE
void vector_clear_and_shrink(deque<char*>&vec)
{

  uint16_t size = vec.size();
  for (int i = 0; i < size; i++)
  {
    if (vec[i]) {
      free(vec[i]);
      vec[i] = NULL;
    }
   Serial.println("shrink-----------------------");
  }

  vec.clear();
  vec.shrink_to_fit();
 
}
//-----------------------------MEM
void mem()
{

  uint32_t freeHeapBytes = heap_caps_get_free_size(MALLOC_CAP_DEFAULT);
  uint32_t totalHeapBytes = heap_caps_get_total_size(MALLOC_CAP_DEFAULT);
  float percentageHeapFree = freeHeapBytes * 100.0f / (float)totalHeapBytes;
  // Print to serial
  Serial.printf("[Memory] %.1f%% free - %d of %d bytes free\n", percentageHeapFree, freeHeapBytes, totalHeapBytes);
  uint32_t Free = ESP.getFreeHeap();
  uint32_t  alloc = ESP.getMaxAllocHeap();
  Serial.print("Free:"); Serial.print(Free);
  Serial.print(" alloc:"); Serial.println(alloc);

}