#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6EaYGxiuG"
#define BLYNK_TEMPLATE_NAME "lux meter"
#define BLYNK_AUTH_TOKEN "N2vACviNO6OD1sEEnooEcX1bsV4ALzAY"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <DHTesp.h>
#include <ESP32Servo.h>
#include <BlynkSimpleEsp32.h>
#include <WiFiClient.h>


const char* apiEndpoint = "https://super-trout-69r5764wx65h56rr-5000.app.github.dev/sensor_data";
const char* ssid = "Wokwi-GUEST";
const char* password = "";
int pinDHT = 15;
int pinBuzzer = 12;
int pinServo = 4;
DHTesp dht;
Servo servo;
const float GAMMA = 0.7;
const float RL10 = 50;


char auth[] = "N2vACviNO6OD1sEEnooEcX1bsV4ALzAY";
char ssidd[] = "Wokwi- GUEST";
char pass[] = "";

BlynkTimer timer;

// LCD configuration
LiquidCrystal_I2C lcd(0x27, 16, 2);

void sendSensor()
{
  int analogValue = analogRead(36);
  float voltage = analogValue * 5/4095.0;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  Serial.print("Lux: ");
  Serial.println(lux);
  Blynk.virtualWrite(V0, lux); 
}

void setupWifi()
{
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }

  Serial.print(" Connected: ");
  Serial.println(WiFi.localIP());
}

void setup()
{
  Serial.begin(115200);
  dht.setup(pinDHT, DHTesp::DHT22);
  servo.attach(pinServo);
  setupWifi();
  Blynk.begin(auth, ssidd, pass);
  timer.setInterval(1L, sendSensor);

  // Inicializar pines del buzzer
  pinMode(pinBuzzer, OUTPUT);

  // Initialize the LCD
  lcd.init();
  lcd.backlight();
}

void sendData(float temperature, float humidity)
{
  Serial.print("Sending data to API: ");

  HTTPClient http;
  http.begin(apiEndpoint);
  http.addHeader("Content-Type", "application/json");

  StaticJsonDocument<200> doc;
  doc["temperature"] = temperature;
  doc["humidity"] = humidity;
  doc["date_time"] = "2021-01-01 00:00:00";

  String json;
  serializeJson(doc, json);

  int httpResponseCode = http.POST(json);
  if (httpResponseCode > 0)
  {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    String responseString = http.getString();
    Serial.println("Received response: " + responseString);
  }
  else
  {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  http.end();
}

void moveServo(int angle)
{
  servo.write(angle);
  delay(500);
  servo.write(0);
}

void loop()
{
  
  TempAndHumidity data = dht.getTempAndHumidity();

  // Display on Serial Monitor
  Serial.println("Temperature: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");

  // Display on LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(data.temperature, 2) + "C");
  lcd.setCursor(0, 1);
  lcd.print("Humidity: " + String(data.humidity, 1) + "%");

  // Verificar umbrales y activar buzzer y servo
  if (data.temperature > 30.0 || data.humidity > 20.0)
  {
    digitalWrite(pinBuzzer, HIGH);
    moveServo(90);
  }
  else
  {
    digitalWrite(pinBuzzer, LOW);
    moveServo(180);
  }

  delay(1000);
  sendData(data.temperature, data.humidity);
}