//Nama : Daffa
//Mapel : E3
//Kelas : XITKJ3

//ALARM PENCURIAN
//project IoT menggunakan ESP32 dan sensor HC-SR04 Ultrasonic

//define variabel
#define trigerPin 12
#define echoPin 13
#define ledPin 14
#define speakerPin 15
#define pitch 262
#define CM_TO_INCH 0.393701
#define alarm 15

#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd (0x27, 16, 2);

#define ldrPin 2 
//int intensity;


long duration;
float distance;
float distanceInch;

//menghubungkan ke wifi
#include <WiFi.h>

const char* ssid = "Wokwi-GUEST";
const char* pass = "";

WiFiClient alfa;

//memakai library thingspeak
#include <ThingSpeak.h>

unsigned long ChannelID = 2299657;
const char * WriteAPI = "UKK956KQ420BLR9E";


void setup() {
  //setup untuk sensor
  Serial.begin(115200);
  pinMode(trigerPin, OUTPUT);
  pinMode(echoPin, INPUT);

  //untuk LDR
  Serial.println("LDR readings...");
  pinMode(ldrPin, INPUT);

  //setup untuk led
  pinMode(ledPin, OUTPUT);

  //setup untuk speaker
  pinMode(speakerPin, OUTPUT);
  pinMode(alarm, OUTPUT);

  //scan WiFi
  Serial.println("Scan WiFi...");
  int networks = WiFi.scanNetworks();
  if(networks == 0){
    Serial.println("No WiFi Networks!");
  }
  else{
    Serial.print(networks);
    Serial.println("Networks Found!");
    for(int i = 0; i < networks; i++)
      Serial.println(WiFi.SSID());
      delay(10);
  }

  //menyambungkan ke wifi
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED){
    delay(100);
    Serial.println(".");
  }
  Serial.println("WiFi Connected!");
  Serial.println(WiFi.localIP());

  //memulai program thingspeak
  ThingSpeak.begin(alfa);

}

void loop() {
  
 //looping sensor (membuat sensor wave)
  digitalWrite(trigerPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigerPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigerPin, LOW);

  //membuat durasi
  duration = pulseIn(echoPin, HIGH);

  //mengkalkulasi jarak
  distance = (duration/2) * 0.0343;

  // Convert to inches
  distanceInch = distance * CM_TO_INCH;

  //concider max width of the door = 200 cm
  if(distance>10){
    digitalWrite(ledPin, HIGH);
    delay(500);

    digitalWrite(ledPin, LOW);
    delay(500);
  }
  else{
    digitalWrite(ledPin, LOW);
  }

 int x = ThingSpeak.writeField (ChannelID, 1, distance, WriteAPI);

  //mengambil data dari thingspeak
  if(distance>10){
    Serial.println("WARNING!");
    Serial.println("distance(cm): " + String(distance));   
    tone(alarm, pitch); // Plays 262Hz tone for 0.250 seconds 
  }
  else{
    Serial.println("AMAN");
     noTone(alarm);
  }


  delay(2000);

  int intensity = analogRead(ldrPin);
  if (intensity < 250) {
    lcd.setCursor(0, 0);
    lcd.print("Warna :");
    lcd.setCursor(0, 1);
    lcd.println("Kuning");
    Serial.print("Intensitas : ");
    Serial.println(intensity);
    Serial.println("Warna : Kuning");
  } else if (intensity >= 250 && intensity < 500) {
    lcd.setCursor(0, 0);
    lcd.print("Warna :");
    lcd.setCursor(0, 1);
    lcd.println("Hijau");
    Serial.print("Intensitas : ");
    Serial.println(intensity);
    Serial.println("Warna : Hijau");
  } else if (intensity >= 500 && intensity < 750) {
    lcd.setCursor(0, 0);
    lcd.print("Warna :");
    lcd.setCursor(0, 1);
    lcd.println("Merah");
    Serial.print("Intensitas : ");
    Serial.println(intensity);
    Serial.println("Warna : Merah");
  } else if (intensity >= 750) {
    lcd.setCursor(0, 0);
    lcd.print("Warna :");
    lcd.setCursor(0, 1);
    lcd.println("Biru");
    Serial.print("Intensitas : ");
    Serial.println(intensity);
    Serial.println("Warna : Biru");
  }
}