#include "WiFi.h"
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <ESP32Servo.h>
#include <DHTesp.h> //DHT sensor library for ESPx

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

#define LED1 15
#define LED2 2
#define SW1 12
#define SW2 13
#define SPK 32
//LDR Photoresistor Sensor Module (T88)
#define AnalogIN 33
#define GAMMA 0.7
#define RL10 50
//Temperature and Humidity Sensor Module (DHT)
#define DHT_PIN 25
DHTesp dhtSensor;

Servo Myservo1, Myservo2, Myservo3; // https://wokwi.com/projects/398557335194012673
const byte ServoPin1 = 19;
const byte ServoPin2 = 18;
const byte ServoPin3 = 5;

byte GO = 0;
String MessageTMP = ""; 

void Function1() {
  digitalWrite(LED1, 1);  GO = 2; 
}

void Function2() {
  digitalWrite(LED1, 1);  GO = 1;
}

void Beep(int F,int L) {
  for (int i = 0; i <= L; i++) {
    digitalWrite(SPK, 1); delayMicroseconds(F);
    digitalWrite(SPK, 0); delayMicroseconds(F);
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(SPK, OUTPUT);
  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);
  attachInterrupt(SW1, Function1, FALLING);
  attachInterrupt(SW2, Function2, FALLING);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  Myservo1.attach(ServoPin1);
  Myservo2.attach(ServoPin2);
  Myservo3.attach(ServoPin3);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, pass);
  Serial.print("Connecting to WiFi .");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print('.');  delay(100);
  }
  Serial.println(WiFi.localIP());
}
// https://docs.google.com/spreadsheets/d/1rxxUN-9b81o5--xSpeghYOKFeKWsULGeGBvPBdl-2yk
// https://x.thunkable.com/copy/70a66df71fc73b67b59e7931f85858e2
void loop() {
  float voltage = analogRead(AnalogIN) / 4095. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  //Serial.println("illuminance " + String(lux, 2) + " lux");
  
  TempAndHumidity  DHT = dhtSensor.getTempAndHumidity();
  //Serial.println("Temp: " + String(DHT.temperature, 2) + "°C");
  //Serial.println("Humidity: " + String(DHT.humidity, 1) + "%");

  String URL = "https://script.google.com/macros/s/AKfycbxHPcLeIX5eOydXdVy1h2RAErkzojNW4_Cc3lgoHZUE7MMvEb_WEbJAFpqm19tPt1uRdg/exec";
         URL = URL + "?i1=" + String(lux, 2) + "&i2=" + String(DHT.temperature, 2);
  if (GO == 1) {
    URL = URL + "&i4=0";  Beep(800, 5);
  }
  else if (GO == 2) {
    URL = URL + "&i4=1";  Beep(500, 5);
  }
  GO = 0;
  HTTPClient http;
  http.begin(URL);
  http.setFollowRedirects(HTTPC_STRICT_FOLLOW_REDIRECTS);
  int httpCode = http.GET();
  if (httpCode == 200) {
    String Message = http.getString();
    if (!MessageTMP.equals(Message)){
      MessageTMP = Message;
      StaticJsonDocument<200> JP;
      deserializeJson(JP, Message);
      int j1 = JP["o1"];
      int j2 = JP["o2"];
      int j3 = JP["o3"];
      int j4 = JP["o4"]; 
      
      Myservo1.write(map(j1,0.1,100881.09,0,180));
      Myservo2.write(map(j2,-40,80,0,180));
      Myservo3.write(j3);

      if (j4 >= 1) {
        digitalWrite(LED2, 1);
      }
      else {
        digitalWrite(LED2, 0);
      }
      
      Beep(1000, 4);
    }
    digitalWrite(LED1, 0);
  } else {
    Serial.println("HTTP ERROR " + String(httpCode));
    Beep(2000, 10); Beep(300, 50);
    delay(1000);
  }
}