#include "WiFi.h" // ESP32 WiFi include

#include <HTTPClient.h>
#include <ArduinoJson.h>

const char* ssid = "aaa";
const char* password = "aaa";

WiFiClient client;
HTTPClient httpClient;
const char *url = "http://192.168.43.154/path-to-folder/send_receive_data.php";



//===============================(ConnectToWiFi)
void ConnectToWiFi()
{

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to "); Serial.println(ssid);

  uint8_t i = 0;
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print('.');
    delay(500);

    if ((++i % 16) == 0)
    {
      Serial.println(F(" still trying to connect"));
    }
  }

  Serial.print(F("Connected. My IP address is: "));
  Serial.println(WiFi.localIP());
}
//===============================(/ConnectToWiFi)


void setup() 
{
  Serial.begin(115200);

  ConnectToWiFi();
  Serial.print("localIP: ");
  Serial.println(WiFi.localIP());
  delay(1000);
}



void loop() 
{

  //-------------------------------(wifi_status)
  switch (WiFi.status())
  {
    case WL_NO_SSID_AVAIL:
    Serial.println("Configured SSID cannot be reached");
    break;
    case WL_CONNECTED:
    Serial.println("Connection successfully established");
    Serial.println(WiFi.localIP());
    break;
    case WL_CONNECT_FAILED:
    Serial.println("Connection failed");
    break;
  }
  Serial.printf("Connection status: %dn", WiFi.status());
  Serial.print("RRSI: ");
  Serial.println(WiFi.RSSI());

  //-------------------------------(/wifi_status)


  //-----------------------------(send&fetch data)
  String data =  "temperture_val=" +String(22) + "&humidity_val=" +  String(99)+"";
  httpClient.begin(client, url);
  httpClient.addHeader("Content-Type", "application/x-www-form-urlencoded");
  httpClient.POST(data);
  String string_json_fetched = httpClient.getString();
  httpClient.end();
  Serial.println(string_json_fetched);

  StaticJsonDocument<500> doc;
  // Deserialize the JSON document
  DeserializationError error = deserializeJson(doc, string_json_fetched);

  // Test if parsing succeeds.
  if (error) 
  {
    Serial.print(F("deserializeJson() failed: "));
    Serial.println(error.f_str());
    return;
  }
  //-----------------------------(/send&fetch data)
  
  
  delay(3000);


}