#include <ESP8266WiFi.h>
#include "secrets.h"
#include "ThingSpeak.h" // always include thingspeak header file after other header files and custom macros
int ldr = A0;
#define LED1 D4
#define LED2 D5
#define LED3 D6
#include <LCD_I2C.h>

LCD_I2C lcd(0x27, 16, 2);

char ssid[] = SECRET_SSID;   // your network SSID (name) 
char pass[] = SECRET_PASS;   // your network password
int keyIndex = 0;            // your network key Index number (needed only for WEP)
WiFiClient  client;

unsigned long myChannelNumber = SECRET_CH_ID;
const char * myWriteAPIKey = SECRET_WRITE_APIKEY;

void setup() {
  Serial.begin(9600);
  WiFi.mode(WIFI_STA); 
  ThingSpeak.begin(client);  // Initialize ThingSpeak

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  lcd.begin();
  lcd.backlight();
}

void loop() {
  // Connect or reconnect to WiFi
  if(WiFi.status() != WL_CONNECTED){
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(SECRET_SSID);
    while(WiFi.status() != WL_CONNECTED){
      WiFi.begin(ssid, pass);  // Connect to WPA/WPA2 network. Change this line if using open or WEP network
      Serial.print(".");
      delay(5000);     
    } 
    Serial.println("\nConnected.");
  }

  int nilai_ldr = analogRead(ldr);
  ThingSpeak.setField(1, nilai_ldr);
  int x = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  if (x == 200){
    Serial.println("Channel update succesful.");
    Serial.print("Nilai ADC: ");
    Serial.println(nilai_ldr);
    //delay(500);
    
    lcd.setCursor(0, 0);
    lcd.print("Nilai LDR: ");
    lcd.print(nilai_ldr);
    lcd.print(" ");

    if (nilai_ldr > 600){
    digitalWrite(LED1, HIGH);
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, HIGH);
    digitalWrite(LED3, LOW);
    lcd.setCursor(0, 1);
    lcd.print("Kondisi LED: ON");
    lcd.print(" ");
    }
  
    else {
    digitalWrite(LED1, LOW);
    lcd.setCursor(0, 1);
    lcd.print("Kondisi LED: OFF");
    lcd.print(" ");
    }
  }
    
  else {Serial.println("Problem updating channel. HTTP error code " + String(x));
  }
  delay(15000);
}