#include "Arduino.h"
//#include <string>
#include <deque>
//#include <esp_system.h> //mem
using namespace std;
std::deque<String>  v_audioContent;

//void vector_clear_and_shrink(deque<String>&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) {
      String s = v_audioContent[0];
        Serial.printf("%s\n", s);
      v_audioContent.pop_front();
    }
    mem();
    //if (v_audioContent.size() == 0)
    if (v_audioContent.empty())
      vector_clear_and_shrink(v_audioContent); // free memory
    Serial.print("FOR------------------------:");
    Serial.println(f);

  }

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

void loop() {
  delay(1000);
}
//-----------------------------ADD
void add() {
  String ruString = "Привет";  //RU
/*
  char cbuffer[ruString.length() + 1] = "";
  //Serial.println(myString);  // debug
  strcpy( cbuffer, ruString.c_str() );
  v_audioContent.push_back(String(cbuffer));
  String s = "1234Privet;";
  //v_audioContent.insert(v_audioContent.begin(), strdup(s));
  v_audioContent.push_back(s.c_str());
  const char* c = "TESt 1234;2";
  v_audioContent.push_back( String(c));
  c = "HELLO 1234;3";
  v_audioContent.push_back( String(c));
  */
  for (int n = 0; n < 1000; n++)
  {
    ruString = String(n);
  //  char cbuffer[ruString.length() + 1] = "";
    //Serial.println(myString);  // debug
  //  strcpy( cbuffer, ruString.c_str());
    v_audioContent.push_back(ruString.c_str());
    // String nn = String(n);
    //v_audioContent.push_back(n.c_str());
  }
}
//-----------------------------FREE
void vector_clear_and_shrink(deque<String>&vec)
{


  vec.clear();
  vec.shrink_to_fit();
  Serial.println("shrink-----------------------");
  mem();
}
//-----------------------------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);

}