#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <Timers.h>
#include <DNSServer.h>

const char *ssid = "DataJugling";
const char *password = "jugle123";
const char *url = "dataserver.local";

DNSServer dnsServer;
ESP8266WebServer server(80);

Timer ledTimer, aliveTimer;
bool ledState = LOW;

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, HIGH);
  ledTimer.begin(SECS(1));
  aliveTimer.begin(SECS(2.5));

  WiFi.mode(WIFI_AP);
  WiFi.softAP(ssid, password);

  dnsServer.setTTL(300);
  dnsServer.setErrorReplyCode(DNSReplyCode::ServerFailure);
  dnsServer.start(53, url, WiFi.softAPIP());

  server.on("/", []() {
    server.send(200, "text/html", String("{\"state\": ") + String(ledState) + String("}"));
  });

  server.begin();
}

void loop() {
  dnsServer.processNextRequest();
  server.handleClient();

  if (ledTimer.available()) {
    ledState = !ledState;
    ledTimer.restart();
  }

  if (aliveTimer.available()) {
    digitalWrite(LED_BUILTIN, LOW);
    delay(100);
    digitalWrite(LED_BUILTIN, HIGH);
    aliveTimer.restart();
  }
}