#include <WiFi.h>
#include <HTTPClient.h>
#include <DHTesp.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* apiKey = "Q1F6CB4T59MES1BC";

#define DHT_PIN 15
#define VIB_PIN 34
#define DEF_PIN 35

DHTesp dht;

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

  dht.setup(DHT_PIN, DHTesp::DHT22);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("\nWiFi conectado");
}

void loop() {

  // Lectura DHT22
  TempAndHumidity data = dht.getTempAndHumidity();

  float temperatura = data.temperature;
  float humedad = data.humidity;

  // Lectura sensores simulados
  int vibRaw = analogRead(VIB_PIN);
  int defRaw = analogRead(DEF_PIN);

  float vibracion = map(vibRaw, 0, 4095, 0, 100);
  float deformacion = map(defRaw, 0, 4095, 0, 50);

  // ==================================================
  // FIELD5 - ESTADO ESTRUCTURAL
  // 0 = Óptimo
  // 1 = Regular
  // 2 = Crítico
  // ==================================================

  int estadoEstructural;

  if (vibracion < 30 && deformacion < 15) {
    estadoEstructural = 0;
  }
  else if (vibracion < 70 && deformacion < 35) {
    estadoEstructural = 1;
  }
  else {
    estadoEstructural = 2;
  }

  // ==================================================
  // FIELD6 - RIESGO
  // 0 = Bajo
  // 1 = Medio
  // 2 = Alto
  // ==================================================

  int riesgo;

  if (estadoEstructural == 0) {
    riesgo = 0;
  }
  else if (estadoEstructural == 1) {
    riesgo = 1;
  }
  else {
    riesgo = 2;
  }

  // ==================================================
  // FIELD7 - TRANSITO
  // Vehículos/hora simulados
  // ==================================================

  int transito = random(20, 121);

  // ==================================================
  // FIELD8 - NIVEL DE ALERTA
  // 0 = Normal
  // 1 = Preventiva
  // 2 = Advertencia
  // 3 = Emergencia
  // ==================================================

  int alerta;

  if (riesgo == 0) {
    alerta = 0;
  }
  else if (riesgo == 1) {
    alerta = 1;
  }
  else {
    if (transito > 80) {
      alerta = 3;
    } else {
      alerta = 2;
    }
  }

  // Monitor Serie

  Serial.println("===============");

  Serial.print("Temperatura: ");
  Serial.println(temperatura);

  Serial.print("Humedad: ");
  Serial.println(humedad);

  Serial.print("Vibracion: ");
  Serial.println(vibracion);

  Serial.print("Deformacion: ");
  Serial.println(deformacion);

  Serial.print("Estado Estructural: ");
  Serial.println(estadoEstructural);

  Serial.print("Riesgo: ");
  Serial.println(riesgo);

  Serial.print("Transito: ");
  Serial.println(transito);

  Serial.print("Nivel de Alerta: ");
  Serial.println(alerta);

  // Envío a ThingSpeak

  HTTPClient http;

  String url =
    String("https://api.thingspeak.com/update?api_key=") +
    apiKey +
    "&field1=" + String(temperatura, 2) +
    "&field2=" + String(humedad, 2) +
    "&field3=" + String(vibracion, 2) +
    "&field4=" + String(deformacion, 2) +
    "&field5=" + String(estadoEstructural) +
    "&field6=" + String(riesgo) +
    "&field7=" + String(transito) +
    "&field8=" + String(alerta);

  http.begin(url);

  int httpCode = http.GET();

  Serial.print("HTTP: ");
  Serial.println(httpCode);

  http.end();

  delay(20000);
}