#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <ArduinoOTA.h>

// Temperature Stuff
// Set GPIO for DS18B20
#define ONE_WIRE_BUS 2
// OneWire Instance
OneWire oneWire(ONE_WIRE_BUS);
// Use Dallas stuff
DallasTemperature sensors(&oneWire);

// Wifi Stuff
const char *ssid = "*******"; // Your SSID
const char *password = "*******"; // Your Password
WiFiUDP ntpUDP;
IPAddress ipMulti(10, 0, 1, 255); // My network happens to be 10.0.1.XXX, change to whatever your network is
unsigned int portMulti = 12345;

// NTP Client
NTPClient timeClient(ntpUDP, -18000);

// Timer instead of delay (delay messes up OTA)
unsigned long previousMillis = 0;
const long interval = 60000;

void setup() {
  Serial.begin(115200);
  Serial.println("Initializing");
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);
  // Start temperature library
  sensors.begin();
  // Start Wifi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Start NTP
  timeClient.begin();
  // All the OTA Stuff
  ArduinoOTA.onStart([]() {
    Serial.println("Start");
  });
  ArduinoOTA.onEnd([]() {
    Serial.println("\nEnd");
  });
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
  });
  ArduinoOTA.onError([](ota_error_t error) {
    Serial.printf("Error[%u]: ", error);
    if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed");
    else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed");
    else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed");
    else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed");
    else if (error == OTA_END_ERROR) Serial.println("End Failed");
  });
  ArduinoOTA.begin();
  Serial.println("Ready");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

}

void loop() {
  // Timer code
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis > interval) {
    previousMillis = currentMillis;
    getTimeandTemp();
  }
  ArduinoOTA.handle();
}

char sendudp(String sendit) {
  ntpUDP.beginPacket(ipMulti, portMulti);
  ntpUDP.println(sendit);
  ntpUDP.endPacket();
}

void getTimeandTemp() {
  String str;
  timeClient.update();
  sensors.requestTemperatures();
  str = "(Downstairs) at: " + String(timeClient.getFormattedTime()) + "/" + String(timeClient.getEpochTime()) + " -> " + String(sensors.getTempFByIndex(0)) + "F";// Change the label (Downstairs) to whatever you like
  sendudp(str);
}