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

#define buzzer 2
#define red 12
#define green 13
#define yellow 14
#define white 5


#define DHT_PIN 15
unsigned long lastChangeTime = 0; // Milisegundos desde el último cambio 


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

char ssid[] = SECRET_SSID;   // your network SSID (name)
char pass[] = SECRET_PASS;   // your network password

WiFiClient  client;
DHTesp dhtSensor;


void sendData (int temp, int hum) {
  ThingSpeak.setField(1, temp);
  ThingSpeak.setField(2, hum);
  
  int httpCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  
  if (httpCode == 200) {
    Serial.println("Channel write successful.");
  }
  else {
    Serial.println("Problem writing to channel. HTTP error code " + String(httpCode));
  }
}

void sendCritico (int temp, int hum) {
  ThingSpeak.setField(1, temp);
  ThingSpeak.setField(2, hum);
  
  int httpCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  
  if (httpCode == 200) {
    Serial.println("Channel write successful.");
  }
  else {
    Serial.println("Problem writing to channel. HTTP error code " + String(httpCode));
  }
}

std::tuple<float, float> handleResponse()
{
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temperature = (data.temperature);
  float humidity = (data.humidity);
  
  return std::make_tuple(temperature, humidity);
}

//Initialize the LCD display

void setup() {
  // Debug console
  Serial.begin(115200);
  pinMode(buzzer, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(red, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(white, OUTPUT);
  delay(100);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22); // 11 es físico
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  lastChangeTime = millis(); // Reiniciar el tiempo del último cambio
}





void loop() {

  int interval = 120000; 

  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float humidity = (data.humidity);
  float temperature = (data.temperature);

  int value1 = temperature;
  int value2 = humidity;


  Serial.println(value1);
  value1 = map(value1, 0, 4095, 0, 100);

  //4095 = 100 
  //2047 = 50
  
  Serial.println("Valor del Map1: ");
  Serial.println(value1);


  Serial.println(value2);
  value2 = map(value2, 0, 4095, 0, 100);

  //4095 = 100 
  //2047 = 50
  
  Serial.println("Valor del Map2: ");
  Serial.println(value2);

  //Humidity conditions
  if (value2 < 40){
    digitalWrite(white, HIGH);
  }
  if (value2 >= 40 && value2 <= 70){
    digitalWrite(white, HIGH);
    delay(2000);
    digitalWrite(white, LOW);
    delay(2000);
    digitalWrite(white, HIGH);
    delay(2000);
  }
  if (value2 > 70){
    digitalWrite(white, LOW);
  }

  //Temp conditions
  if (value1 <= 28){
    digitalWrite(red, LOW);
    digitalWrite(green, HIGH);
    digitalWrite(yellow, LOW);
  }
  if (value1 > 28 && value1 <= 35){
    digitalWrite(red, HIGH);
    digitalWrite(green, HIGH);
    digitalWrite(yellow, LOW);
  }
  if (value1 > 35){
    digitalWrite(red, HIGH);
    digitalWrite(green, LOW);
    digitalWrite(yellow, LOW);
  }

  //Ahorro Energético
  if (millis() - lastChangeTime > interval) { 
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
    digitalWrite(yellow, LOW);
    digitalWrite(white, LOW);
  }   // Verificar tiempo transcurrido para ahorro

  //Modo Crítico
  if (value2 < 20 && value1 > 40){
    sendCritico(temp,hum);
    digitalWrite(buzzer, HIGH);
    tone(buzzer, 100);
    digitalWrite(white, HIGH);
    digitalWrite(red, HIGH);
    delay(1000);
    digitalWrite(white, LOW);
    digitalWrite(red, LOW);
    delay(1000);
    digitalWrite(white, HIGH);
    digitalWrite(red, HIGH);
    delay(1000);
  } else{
    digitalWrite(buzzer, LOW);
  }


  //Thingspeak
  // 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.");
  }

  auto [temp, hum] = handleResponse();

  sendData(temp,hum);


}