#define BLYNK_TEMPLATE_ID "TMPLGPQ7WQGV"
#define BLYNK_TEMPLATE_NAME "IoT Project"
#define BLYNK_AUTH_TOKEN "UqYjzXMux1QpSOm6SiPA6O1F9lQjgR3z"

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <uri/UriBraces.h>
#include <HTTPClient.h>
#include <Wire.h>
#include "DHT.h"
#include <LiquidCrystal_I2C.h>
#include <BlynkSimpleEsp32.h>
#include <ESP32Servo.h>

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
// Defining the WiFi channel speeds up the connection:
#define WIFI_CHANNEL 6

#define DHT_PIN 33
#define LED_PIN 21
#define LSR_PIN 26
#define SRV_PIN 17
#define OFF_BTN_PIN 35
#define ON_BTN_PIN 32

DHT dhtSensor(DHT_PIN, DHT22);
Servo servo;

BlynkTimer timer;

float temperature;
float humidity;
bool lastFoldStatus = false;

void connectWifi(void) {
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, WIFI_CHANNEL);
  Serial.print("Connecting to WiFi ");
  Serial.print(WIFI_SSID);
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

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

void sendDryingStatus(bool status) {
  if (status == true) {
    Blynk.virtualWrite(V1, 1);
  } else {
    Blynk.virtualWrite(V1, 0);
  }
}

void toggleDrying(bool status) {
  if (status == true) {
    servo.write(0);
    digitalWrite(LED_PIN, HIGH);
  } else {
    servo.write(90);
    digitalWrite(LED_PIN, LOW);
  }
}

void readButtons(void) {
  if (digitalRead(OFF_BTN_PIN) == HIGH && lastFoldStatus == true) {
    Serial.println("[Manual] Received Fold OFF");
    toggleDrying(false);
    sendDryingStatus(false);
    lastFoldStatus = false;
  }
  if (digitalRead(ON_BTN_PIN) == HIGH && lastFoldStatus == false) {
    Serial.println("[Manual] Received Fold ON");
    toggleDrying(true);
    sendDryingStatus(true);
    lastFoldStatus = true;
  }
}

void readData(void) {
  temperature = dhtSensor.readTemperature();
  humidity = dhtSensor.readHumidity();
  Serial.print("Temperature: ");
  Serial.println(temperature);
  Serial.print("Humidity: ");
  Serial.println(humidity);
}

void sendDataToBlynk() {
  Blynk.virtualWrite(V6, temperature);
  Blynk.virtualWrite(V4, humidity);
}

BLYNK_WRITE(V1) {
  if (param.asInt() == 1) {
    toggleDrying(true);
    Serial.println("[Blynk] Received Fold ON");
  } else {
    toggleDrying(false);
    Serial.println("[Blynk] Received Fold OFF");
  }
}

void setup(void) {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);

  connectWifi();

  Blynk.begin(BLYNK_AUTH_TOKEN, WIFI_SSID, WIFI_PASSWORD);

  dhtSensor.begin();
  pinMode(DHT_PIN, INPUT);

  servo.attach(SRV_PIN, 500, 2400);

  timer.setInterval(1000, readData);
  timer.setInterval(2000, sendDataToBlynk);
}

void loop(void) {
  readButtons();
  timer.run();
}