#include <Arduino.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <ESPmDNS.h>

#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
#define ETH_PHY_POWER 12

#include <ETH.h>

static bool eth_connected = false;
AsyncWebServer server(80);

const char *PARAM_MESSAGE = "message";

void notFound(AsyncWebServerRequest *request) { request->send(404, "text/plain", "Not found"); }

void WiFiEvent(WiFiEvent_t event) {
  switch (event) {
  case SYSTEM_EVENT_ETH_START:
    Serial.println("ETH Started");
    // set eth hostname here
    ETH.setHostname("esp32-ethernet");
    break;
  case SYSTEM_EVENT_ETH_CONNECTED:
    Serial.println("ETH Connected");
    break;
  case SYSTEM_EVENT_ETH_GOT_IP:
    Serial.print("ETH MAC: ");
    Serial.print(ETH.macAddress());
    Serial.print(", IPv4: ");
    Serial.print(ETH.localIP());
    if (ETH.fullDuplex()) {
      Serial.print(", FULL_DUPLEX");
    }
    Serial.print(", ");
    Serial.print(ETH.linkSpeed());
    Serial.println("Mbps");
    eth_connected = true;
    break;
  case SYSTEM_EVENT_ETH_DISCONNECTED:
    Serial.println("ETH Disconnected");
    eth_connected = false;
    break;
  case SYSTEM_EVENT_ETH_STOP:
    Serial.println("ETH Stopped");
    eth_connected = false;
    break;
  default:
    break;
  }
}

void setup() {
  Serial.begin(115200);
  WiFi.onEvent(WiFiEvent);
  ETH.begin();

  while (!eth_connected) {
    delay(1000);
  }

  if (!MDNS.begin("a2clcontroller")) {
    Serial.println("Error setting up MDNS responder!, system halt");
    while (1) {
      delay(1000);
    }
  }
  Serial.println("mDNS responder started");

  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) { request->send(200, "text/plain", "Hello, world"); });

  // Send a GET request to <IP>/get?message=<message>
  server.on("/get", HTTP_GET, [](AsyncWebServerRequest *request) {
    String message;
    if (request->hasParam(PARAM_MESSAGE)) {
      message = request->getParam(PARAM_MESSAGE)->value();
    } else {
      message = "No message sent";
    }
    request->send(200, "text/plain", "Hello, GET: " + message);
  });

  // Send a POST request to <IP>/post with a form field message set to <message>
  server.on("/post", HTTP_POST, [](AsyncWebServerRequest *request) {
    String message;
    if (request->hasParam(PARAM_MESSAGE, true)) {
      message = request->getParam(PARAM_MESSAGE, true)->value();
    } else {
      message = "No message sent";
    }
    request->send(200, "text/plain", "Hello, POST: " + message);
  });

  server.onNotFound(notFound);

  server.begin();
  // Add service to MDNS-SD
  MDNS.addService("http", "tcp", 80);
}

void loop() {}