#include <Arduino.h>
#include <ArduinoJson.h>
#include <HTTPClient.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include "time.h"


#include "thingProperties.h"


// WiFi Credentials
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""

// Firebase things
#define DATABASE_URL "https://bentowokwi-default-rtdb.firebaseio.com/.json"
HTTPClient client;

//definir los pines
#define trigPin 5
#define echoPin 18
#define ledV 2
#define ledR 4
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

//variables
int prev = 0;
String tempText = "";
String payload = "";
String sensorID = "HC001";
char timeStringBuff[20];
String ledVBool;
String ledRBool;
String safeDistBool;

void setup()
{
	Serial.begin(115200);

	LCD.init();
  LCD.backlight();
	LCD.setCursor(0, 0);
  LCD.print("Connecting to ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");

	// WIFI
	WiFi.mode(WIFI_STA);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
	Serial.print("connecting");
	while (WiFi.status() != WL_CONNECTED) {
		Serial.print(".");
		delay(500);
	}
	Serial.println();
	Serial.print("connected: ");
	Serial.println(WiFi.localIP());

	LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Online");
	delay(500);
	LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Connecting to");
  LCD.setCursor(0, 1);
  LCD.println("Firebase...");
	Serial.println("connecting...");

	// Firebase
	client.begin(DATABASE_URL);
	int httpResponseCode=client.GET();
	
	if (httpResponseCode>0) {
		LCD.clear();
		LCD.setCursor(0, 0);
		LCD.println("Connected");
		Serial.println("connected, Firebase payload:");
		payload = client.getString();
		Serial.println(payload);
		Serial.println();
	}

	// Componentes
	pinMode(trigPin, OUTPUT); //definir como salida
  pinMode(echoPin, INPUT); //definir como entrada
	pinMode(ledV, OUTPUT);
	pinMode(ledR, OUTPUT);

	Serial.println("Verde = DISTANCIA SEGURA");
	Serial.println("Rojo = NO SEGURA");

	// Indica comienzo de Transmisión de Datos
	for (int i=0; i<5; i++) {
  	digitalWrite(ledV, HIGH);
		digitalWrite(ledR, HIGH);
		delay(200);
		digitalWrite(ledV, LOW);
		digitalWrite(ledR, LOW);
		delay(200);
	}

	// Time
	configTime(-9000, -9000, "1.mx.pool.ntp.org");


	// Defined in thingProperties.h
  initProperties();

  // Connect to Arduino IoT Cloud
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
  
  /*
     The following function allows you to obtain more information
     related to the state of network and IoT Cloud connection and errors
     the higher number the more granular information you’ll get.
     The default is 0 (only errors).
     Maximum is 4
 */
  setDebugMessageLevel(2);
  ArduinoCloud.printDebugInfo();
}

void loop()
{
	long sure, mesafe;
	digitalWrite(trigPin, LOW);
	delayMicroseconds(2);
	digitalWrite(trigPin, HIGH);
	delayMicroseconds(2);
	digitalWrite(trigPin, LOW);
	sure=pulseIn(echoPin, HIGH);
	mesafe=(sure/2)/29.1;


	if(prev!=mesafe) {
		if(mesafe>200 || mesafe<0){
			digitalWrite(ledV, HIGH);
			digitalWrite(ledR, LOW);
			tempText = "DISTANCIA SEGURA: ";
			ledVBool = "true";
			ledRBool = "false";
			safeDistBool = "true";
		}
		else {
			digitalWrite(ledV, LOW);
			digitalWrite(ledR, HIGH);
			tempText = "NO SEGURA: ";
			ledVBool = "false";
			ledRBool = "true";
			safeDistBool = "false";
		}

		struct tm timeinfo;
		if (!getLocalTime(&timeinfo)) {
			Serial.println("Time Err");
		}
		strftime(timeStringBuff, sizeof(timeStringBuff), "%d/%m/%Y %H:%M", &timeinfo);
		Serial.println(String(timeStringBuff));

		client.PATCH("{\"Sensores/time\":\"" + String(timeStringBuff) + "\"}");
		client.PATCH("{\"Sensores/LedTrue\":" + ledVBool + "}");
		client.PATCH("{\"Sensores/LedFalse\":" + ledRBool + "}");
		client.PATCH("{\"Sensores/DistanceCm\":" + String(mesafe) + "}");
		client.PATCH("{\"Sensores/safeDist\":" + safeDistBool + "}");
		client.PATCH("{\"Sensores/id\":" + sensorID + "}");

		LCD.clear();
		LCD.setCursor(0,0);
		LCD.print(tempText);
		LCD.setCursor(0,1);
		LCD.print(mesafe);

		Serial.print(tempText);
		Serial.print(mesafe);
		Serial.println(" cm");
	}

  prev = mesafe;
  delay(500);
}