ESP32 HTTP Server Copy - Wokwi ESP32, STM32, Arduino Simulator

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <uri/UriBraces.h>
#include <HTTPClient.h>

// WiFi config
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
#define WIFI_CHANNEL 6

WebServer server(80);

// LED demo
const int LED1 = 26;
const int LED2 = 27;

// Sensore simulato cancello (pulsante)
const int GATE_SENSOR = 25;

bool led1State = false;
bool led2State = false;

bool lastGateState = LOW;

// debounce
unsigned long lastTrigger = 0;
const int debounceMs = 3000;

// 🔥 endpoint simulazione (NO AWS)
const char* lambdaUrl = "https://httpbin.org/post";

// ===================== HTML =====================
void sendHtml() {
  String response = R"(
    <!DOCTYPE html><html>
      <head>
        <title>ESP32 Web Server Demo</title>
      </head>
      <body>
        <h1>ESP32 Web Server</h1>

        <p>Premi il pulsante su pin 25 per simulare il cancello</p>

        <a href="/toggle/1">Toggle LED1</a><br><br>
        <a href="/toggle/2">Toggle LED2</a>
      </body>
    </html>
  )";

  server.send(200, "text/html", response);
}

// ===================== SIMULAZIONE LAMBDA =====================
void callLambda(const char* eventType) {
  if (WiFi.status() == WL_CONNECTED) {

    HTTPClient http;
    http.begin(lambdaUrl);  // ✔ ora client esiste

    http.setTimeout(5000);
    http.addHeader("Content-Type", "application/json");

    String payload = String("{\"event\":\"") + eventType + "\"}";

    int httpResponseCode = http.POST(payload);

    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);

    if (httpResponseCode > 0) {
      Serial.println(http.getString());
    } else {
      Serial.println(http.errorToString(httpResponseCode));
    }

    http.end();
  }
}

// ===================== SETUP =====================
void setup(void) {
  Serial.begin(115200);

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(GATE_SENSOR, INPUT_PULLUP);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, WIFI_CHANNEL);

  Serial.print("Connessione WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }

  Serial.println(" Connesso!");
  Serial.print("IP: ");
  Serial.println(WiFi.localIP());

  server.on("/", sendHtml);

  server.on(UriBraces("/toggle/{}"), []() {
    String led = server.pathArg(0);

    switch (led.toInt()) {
      case 1:
        led1State = !led1State;
        digitalWrite(LED1, led1State);
        break;
      case 2:
        led2State = !led2State;
        digitalWrite(LED2, led2State);
        break;
    }

    sendHtml();
  });

  server.begin();
  Serial.println("HTTP server avviato");
}

// ===================== LOOP =====================
void loop(void) {
  server.handleClient();

  bool currentState = digitalRead(GATE_SENSOR);

  // debug temporaneo — rimuovilo dopo
  static unsigned long lastPrint = 0;
  if (millis() - lastPrint > 1000) {
    Serial.print("PIN 25: ");
    Serial.println(currentState);
    lastPrint = millis();
  }

  if (currentState == LOW && lastGateState == HIGH) {
    if (millis() - lastTrigger > debounceMs) {
      Serial.println("🚪 Cancello aperto!");
      callLambda("gate_open");
      lastTrigger = millis();
    }
  }

  lastGateState = currentState;
  delay(50);
}