#include <WiFi.h>
#include "DHTesp.h"
#include "ThingSpeak.h"

int ledPin1 = 5;         // LED 1 connected to digital pin 5
int ledPin2 = 18;        // LED 2 connected to digital pin 18
int ledPin3 = 19;        // LED 3 connected to digital pin 19
int potensioPin1 = 4;    // Potentiometer 1 connected to analog pin 4
int potensioPin2 = 2;    // Potentiometer 2 connected to analog pin 2
int potensioPin3 = 15;   // Potentiometer 3 connected to analog pin 15
int val1 = 0;            // Variable to store the potentiometer 1 value
int val2 = 0;            // Variable to store the potentiometer 2 value
int val3 = 0;            // Variable to store the potentiometer 3 value

const int DHT_PIN = 15;
const int LED_PIN = 13;
const int LDR_PIN = 32;
#define LIGHT_SENSOR_PIN 35
#define GAS_PIN 34   // Analog pin for gas sensor

// Define threshold values
const float THRESHOLD_VALUE = 300.0; // Example threshold for gas sensor; adjust as needed

float gasValue = 0;
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = 2555314;
const char* myApiKey = "D2KZTE61AXPF6CJL";
const char* server = "api.thingspeak.com";

DHTesp dhtSensor;
WiFiClient client;

// Define the number of weeks for the forecast
const int NUM_WEEKS = 8;
int currentWeek = 5; // Week 6
int currentDay = 0;

// Ventilation rate for week 6 in m²/h
const float ventilationRate = 1.18;

// Duration of LED operation in seconds
const int LED_DURATION = 23 * 3600; // 23 hours in seconds

// Variables to track LED operation
unsigned long previousMillis = 0;
bool ledOn = false;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LED_PIN, OUTPUT);
  pinMode(LIGHT_SENSOR_PIN, INPUT);
  pinMode(ledPin1, OUTPUT);  // Set the ledPin1 as an OUTPUT
  pinMode(ledPin2, OUTPUT);  // Set the ledPin2 as an OUTPUT
  pinMode(ledPin3, OUTPUT);  // Set the ledPin3 as an OUTPUT

  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected!");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  unsigned long currentMillis = millis();

  if (currentWeek == 5) { // Only for week 6
    // Define parameters for week 6
    float minTemperature = 18;
    float maxTemperature = 21;
    float minHumidity = 60;
    float maxHumidity = 70;
    int lightDuration = 23 * 3600; // 23 hours in seconds
    
    // Simulate temperature and humidity readings within the specified range
    float temperature = random(minTemperature * 10, (maxTemperature + 1) * 10) / 10.0;
    float humidity = random(minHumidity * 10, (maxHumidity + 1) * 10) / 10.0;

    TempAndHumidity data;
    data.temperature = temperature;
    data.humidity = humidity;

    ThingSpeak.setField(1, data.temperature);
    ThingSpeak.setField(2, data.humidity);

    // Read analog values from the gas sensor
    gasValue = analogRead(GAS_PIN);
    ThingSpeak.setField(3, gasValue);

    // Read analog value from the light sensor
    int lightValue = analogRead(LIGHT_SENSOR_PIN);
    ThingSpeak.setField(4, lightValue);

    // Set the ventilation rate for week 6
    ThingSpeak.setField(5, ventilationRate);

    // Control the LED based on the conditions
    if (data.temperature > 35 || data.temperature < 12 || data.humidity > 70 || data.humidity < 40 || gasValue > THRESHOLD_VALUE) {
      digitalWrite(LED_PIN, HIGH);
      ledOn = true;
      previousMillis = currentMillis;
    } else {
      // Turn off LED after 23 hours
      if (ledOn && currentMillis - previousMillis >= LED_DURATION) {
        digitalWrite(LED_PIN, LOW);
        ledOn = false;
      }
    }

    // Control the LED based on potentiometer values
    val1 = analogRead(potensioPin1);
    val2 = analogRead(potensioPin2);
    val3 = analogRead(potensioPin3);

    // Control LED 1
    if (val1 > 0 && val1 < 750) {
      analogWrite(ledPin1, 255);  // Turn LED 1 fully on
    } else {
      analogWrite(ledPin1, 0);    // Turn LED 1 off
    }

    // Control LED 2
    if (val2 > 0 && val2 < 400) {
      analogWrite(ledPin2, 255);  // Turn LED 2 fully on
    } else {
      analogWrite(ledPin2, 0);    // Turn LED 2 off
    }

    // Control LED 3
    if (val3 > 0 && val3 < 20) {
      analogWrite(ledPin3, 255);  // Turn LED 3 fully on
    } else {
      analogWrite(ledPin3, 0);    // Turn LED 3 off
    }

    // Write fields to ThingSpeak
    int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);

    // Print sensor values to the Serial Monitor
    Serial.println("Temp: " + String(data.temperature, 2) + "°C");
    Serial.println("Humidity: " + String(data.humidity, 1) + "%");
    Serial.println("Gas Value: " + String(gasValue));
    Serial.println("Light Value: " + String(lightValue));
    Serial.println("Ventilation Rate: " + String(ventilationRate) + " m²/h");

    if (x == 200) {
      Serial.println("Data pushed successfully");
    } else {
      Serial.println("Push error: " + String(x));
    }
    Serial.println("---");
  }
  
  delay(10000); // Delay for 10 seconds between each data transmission
}