#include "Arduino.h"
#include "WiFi.h"
#include <HTTPClient.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHT.h"

HTTPClient client;
char nomeWifi[] = "Wokwi-GUEST";
char senhaWifi[] = "";
char serverAddress[] = "https://api.tago.io/data";
char contentHeader[] = "application/json";
char tokenHeader[] = "65060ee2-215e-49e4-8fb1-7e8b1f2cdf70";


DHT dht(15, DHT22);

LiquidCrystal_I2C lcd(0x27, 16, 2);

#define LDR_PIN 4
#define GREEN_LED_PIN 19
#define YELLOW_LED_PIN 18
#define RED_LED_PIN 5
#define BUZZER_PIN 2

int luminosity = 0;
char luminosityP[] = "";
  
int humi = 0;
int temp = 0;

/*
int i = 0;
long acumHumi = 0;
long acumTemp = 0;
*/

int MODO_OK = 870;
int MODO_ALERTA = 950;
int humi_OK = 50;
int humi_ALERTA = 70;
int temp_OK = 10;
int temp_ALERTA = 15;

int systemState = 0;

void setup() {
  lcd.init();
  lcd.clear();
  lcd.backlight();

  dht.begin();

  pinMode(GREEN_LED_PIN, OUTPUT);
  pinMode(YELLOW_LED_PIN, OUTPUT);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  Serial.begin(9600);
  init_wifi();
}

void Temp_Rod() {
  if (temp < temp_OK) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp. Baixa ");
    lcd.setCursor(0, 1);
    lcd.print("Temp. = ");
    lcd.println(temp);
    tone(BUZZER_PIN, 1000, 3000);
    digitalWrite(YELLOW_LED_PIN, HIGH);
  } else if (temp < temp_ALERTA) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp. OK ");
    lcd.setCursor(0, 1);
    lcd.print("Temp. = ");
    lcd.println(temp);
  } else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp. ALTA ");
    lcd.setCursor(0, 1);
    lcd.print("Temp. = ");
    lcd.println(temp);
    tone(BUZZER_PIN, 1000, 3000);
    digitalWrite(RED_LED_PIN, HIGH);
  }
}

void Humi_Rod() {
  if (humi < humi_OK) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Umid. Baixa ");
    lcd.setCursor(0, 1);
    lcd.print("Umid. = ");
    lcd.println(humi);
    tone(BUZZER_PIN, 1000, 3000);
    digitalWrite(YELLOW_LED_PIN, HIGH);
  } else if (humi < humi_ALERTA) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Umid. OK ");
    lcd.setCursor(0, 1);
    lcd.print("Umid. = ");
    lcd.println(humi);
  } else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Umid. ALTA ");
    lcd.setCursor(0, 1);
    lcd.print("Umid. =");
    lcd.println(humi);
    tone(BUZZER_PIN, 1000, 3000);
    digitalWrite(RED_LED_PIN, HIGH);
  }
}

void init_wifi() {
  Serial.println("Conectando WiFi");
  Serial.print("Wifi: ");
  Serial.println(nomeWifi);
  WiFi.begin(nomeWifi, senhaWifi);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(1000);
  }
  Serial.println("WiFi Conectado");
  Serial.print("Meu IP eh: ");
  Serial.println(WiFi.localIP());
}

void send_infos() {
  int statusCode = 0;
  char postData[500];

  // Construa o JSON com os dados a serem enviados
  snprintf(postData, sizeof(postData), "{\n"
                                      "\t\"variable\": \"temperature\",\n"
                                      "\t\"value\": %.2f,\n"
                                      "\t\"unit\": \"ºC\"\n"
                                      "}\n"
                                      "{\n"
                                      "\t\"variable\": \"humidity\",\n"
                                      "\t\"value\": %d,\n"
                                      "\t\"unit\": \"%\"\n"
                                      "}\n"
                                      "{\n"
                                      "\t\"variable\": \"luminosity\",\n"
                                      "\t\"value\": %d\n"
                                      "}\n",
           temp, humi, luminosity);

  client.begin(serverAddress);
  client.addHeader("Content-Type", contentHeader);
  client.addHeader("Device-Token", tokenHeader);
  statusCode = client.POST(postData);
  delay(2000);

  // Leia o código de status e o corpo da resposta
  Serial.print("Status code: ");
  Serial.println(statusCode);
  Serial.println("End of POST to TagoIO");
  Serial.println();
}


void loop() {
  int luminosity = analogRead(LDR_PIN);
  humi = dht.readHumidity();
  temp = dht.readTemperature();
  Serial.print("\n LDR  =  ");
  Serial.print(luminosity);
  Serial.print("\n Temperatura C =  ");
  Serial.print(temp);
  Serial.print("\n Humidade: ");
  Serial.print(humi);
  delay(2000);

	
 if (luminosity <= MODO_OK) {
    systemState = 0;  // OK
   	char luminosityP[] = "Ambiente OK";
  } else if (luminosity <= MODO_ALERTA) {
    systemState = 1;  // Alerta
    char luminosityP[] = "Ambiente Meia Luz";
  } else {
    systemState = 2;  // Problema
   	char luminosityP[] = "Ambiente Claro";
  }
  
  
  switch (systemState) {
    case 0:
      // Ambiente OK
      digitalWrite(GREEN_LED_PIN, HIGH);
      digitalWrite(YELLOW_LED_PIN, LOW);
      digitalWrite(RED_LED_PIN, LOW);
      noTone(BUZZER_PIN);
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Ambiente OK");
      break;

    case 1:
      // Ambiente em Alerta
      digitalWrite(GREEN_LED_PIN, LOW);
      digitalWrite(YELLOW_LED_PIN, HIGH);
      digitalWrite(RED_LED_PIN, LOW);
      noTone(BUZZER_PIN);
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Ambiente a meia");
      lcd.setCursor(0, 1);
      lcd.print("Luz");
      break;

    case 2:
      // Ambiente em Problema
      digitalWrite(GREEN_LED_PIN, LOW);
      digitalWrite(YELLOW_LED_PIN, LOW);
      digitalWrite(RED_LED_PIN, HIGH);
      tone(BUZZER_PIN, 1000, 3000);
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Ambiente muito ");
      lcd.setCursor(0, 1);
      lcd.print("CLARO");
      break;

    default:
      // Estado desconhecido
      printf("Estado desconhecido");
      break;
  }
  
  Temp_Rod();
  delay(1000);
  Humi_Rod();
  delay(1000);

  send_infos(); // Envie a temperatura para o servidor TagoIO
  delay(5000);
}