#if defined(ESP32)
  #include <WiFi.h>
  #include <WiFiClientSecure.h>
  // #include <HTTPClient.h>
#elif defined(ESP8266)
  #include <ESP8266WiFi.h>
  #include <WiFiClientSecure.h>
  // #include <ESP8266HTTPClient.h>
#elif defined(CONFIG_PLATFORM_8721D)
  #include <WiFi.h>
  #include <WiFiClient.h>
  // #include <HttpClient.h>
#endif

#define ON_Board_LED 2  //--> Defining an On Board LED, used for indicators when the process of connecting to a wifi router

char ssid[] = "Wokwi-GUEST"; //"********";  //--> Your wifi name or SSID.
char password[] = "";  //"*********";  //--> Your wifi password.

#define host "script.google.com" // API URL
#define port 443 //https
String GSCRIPT_ID = "AKfycbxMjwPXNzdXrWv_sHVLu1oURQuoPP9DQRWAPdYRxRiV7aZFmOG5wuQT_VODvmT7nfUf";  //--> spreadsheet script ID
// Create a URI for the request
String url = "/macros/s/" + GSCRIPT_ID + "/exec";

void wifiConnect(char* Ssid, char* Password);
void printWifiStatus(void);
void sendMessage(String message);

void setup(void) {
  // start serial port:
  Serial.begin(115200);

  pinMode(ON_Board_LED, OUTPUT);     //--> On Board LED port Direction output
  digitalWrite(ON_Board_LED, HIGH);  //--> Turn off Led On Board

  Serial.println("Configuring access point...");
  wifiConnect(ssid, password);  

  // you're connected now, so print out the status:
  printWifiStatus();
}

void loop(void) {
  // Replace with your sensor data
  float temp = random(20, 30);  // Simulated temperature
  float hum = random(40, 60);   // Simulated humidity

  String message = "{\"temperature\": " + String(temp) + ", \"humidity\": " + String(hum) + "}";
  sendMessage(message);
  delay(10000);
}

void wifiConnect(char* Ssid, char* Password){  
#if !defined CONFIG_PLATFORM_8721D
  WiFi.mode(WIFI_STA);
#endif

  WiFi.disconnect();
  delay(100);

  // Attempt to connect to Wifi network:
  Serial.print("Attempting to connect to SSID: ");
  Serial.println(Ssid);
  // Connect to WPA/WPA2 network. Change this line if using open or WEP network:    
  WiFi.begin(Ssid, Password);
  while( WiFi.status() != WL_CONNECTED) {
    // wait 0.5 seconds for connection:
    delay(500);
    Serial.print(".");
  }
  Serial.println("");

  //--Wait for connection
  Serial.print("Connecting");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    //--Make the On Board Flashing LED on the process of connecting to the wifi router.
    digitalWrite(ON_Board_LED, LOW);
    delay(250);
    digitalWrite(ON_Board_LED, HIGH);
    delay(250);
    //--
  }
}

void printWifiStatus(void) {
  // print the SSID of the network you're attached to:
  Serial.print("\r\nSSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi shield's IP address:
  Serial.println("WiFi connected");
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.println("signal strength (RSSI):" + String(rssi) + " dBm");
}

void sendMessage(String message) {
#if (defined ESP32) || (defined ESP8266)
  WiFiClientSecure client;
  client.setInsecure();
#elif defined(CONFIG_PLATFORM_8721D)
  WiFiSSLClient client; // Initialize the Wifi client library
#endif

  // if there's a successful connection:
  if (!client.connect(host, port)) {
    Serial.println("Connection failed");
    return;
  }

  String LEN = String(message.length());
  Serial.print("Host : "); Serial.println(host); Serial.println();
  Serial.println("message=" + message);
  Serial.println("message.length()=" + LEN);

  String request =
          /* Post url */
            "POST " + url + " HTTP/1.1\r\n" +
          /* Headers */
            "Host: " + host + "\r\n" +
            "Connection: close\r\n" +
            "Content-Length: " + LEN +  "\r\n" + 
            "Content-Type: application/json\r\n\r\n" +
          /* Body */   
            message + "\r\n";

  // This will send the request to the server
  client.print(request);
  Serial.println(request);
  delay(50);
  String response = client.readString();
  Serial.println(String(response) + "Updated!"); //Display the result of responsing
}

//==============================================================================