#if defined(ESP8266)
#include <ESP8266WiFi.h>
#elif defined(ESP32)
#include <WiFi.h>
WiFiClient client;
#endif

#define WIFI_SSID           "Wokwi-GUEST"
#define WIFI_PASSWORD       ""

//#define SERIAL_DEBUG_BAUD   115200

#define LED 15
// the Wifi radio's status
int status = WL_IDLE_STATUS;


#define ECHO_PIN 2
#define TRIG_PIN 4
#define Merah 14
#define Kuning 12
#define Hijau 13

String thingSpeakAddress = "api.thingspeak.com";
String writeAPIKey;
String tsfield1Name;
String request_string;

/*void InitWiFi()
{
  Serial.println("Connecting to AP ...");

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {

    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to AP");
}

void reconnect() {
  status = WiFi.status();
  if ( status != WL_CONNECTED) {
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
    Serial.println("Connected to AP");
  }
}*/



void setup() {
  Serial.begin(9600);
  WiFi.disconnect();
  WiFi.begin("Wokwi-GUEST", "");
  while ((!(WiFi.status() == WL_CONNECTED))) {
    delay(300);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  
  //Serial.begin(115200);
  //pinMode(LED_BUILTIN, OUTPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);

  pinMode(Merah, OUTPUT);
  pinMode(Kuning, OUTPUT);
  pinMode(Hijau, OUTPUT);

}

float readDistanceCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034 / 2;
}

void loop() {
   delay(2000);
    //Pembacaan Ultrasonik
    digitalWrite(TRIG_PIN, LOW);
    delayMicroseconds(2);
    digitalWrite(TRIG_PIN, HIGH);
    delayMicroseconds(10);
    digitalWrite(TRIG_PIN, LOW);
    
    int duration = pulseIn(ECHO_PIN, HIGH);
    float distance = duration * 0.034 / 2;

    Serial.print("Jarak: ");
    Serial.println(distance);
    kirim_thingspeak(distance,0);

    if (distance < 100){
      digitalWrite(Merah, HIGH);
      digitalWrite(Kuning, LOW);
      digitalWrite(Hijau, LOW);
    }

    if (distance >= 100 && distance <=150){
      digitalWrite(Merah, LOW);
      digitalWrite(Kuning, HIGH);
      digitalWrite(Hijau, LOW);
    }

    if (distance > 150){
      digitalWrite(Merah, LOW);
      digitalWrite(Kuning, LOW);
      digitalWrite(Hijau, HIGH);
    }
    delay(100);
    
}

void kirim_thingspeak(float jrk, float hum) {
  if (client.connect("api.thingspeak.com", 80)) {
    request_string = "/update?";
    request_string += "key=";
    request_string += "REX5TW1MAQ5LQF47";
    request_string += "&";
    request_string += "field1";
    request_string += "=";
    request_string += jrk;

    Serial.println(String("GET ") + request_string + " HTTP/1.1\r\n" +
                 "Host: " + thingSpeakAddress + "\r\n" +
                 "Connection: close\r\n\r\n");
                 
    client.print(String("GET ") + request_string + " HTTP/1.1\r\n" +
                 "Host: " + thingSpeakAddress + "\r\n" +
                 "Connection: close\r\n\r\n");
    unsigned long timeout = millis();
    while (client.available() == 0) {
      if (millis() - timeout > 5000) {
        Serial.println(">>> Client Timeout !");
        client.stop();
        return;
      }
    }

    while (client.available()) {
      String line = client.readStringUntil('\r');
      Serial.print(line);
    }

    Serial.println();
    Serial.println("closing connection");

  }
}