#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <SPI.h>
#include <Ethernet.h>
#include <PubSubClient.h>
#include <MPU6050_tockn.h>
#include <Wire.h>

MPU6050 mpu6050(Wire);

const char* ssid = "";
const char* password = "";
const char* mqtt_server = "";

WiFiClient espClient;
PubSubClient client(espClient);

long lastMsg = 0;
char msg[50];
int value = 0;
char angle_val[8];
int val = 0;

void setup_wifi() {

  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }

  randomSeed(micros());

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();
}

void reconnect() {

  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str())) {
      Serial.println("connected");
      client.publish("outTopic", "hello world");
      client.subscribe("inTopic");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 3 seconds");
      delay(3000);
    }
  }
}

void setup() {
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);

}

void loop()
{
  if(!client.connected())
  {
  client.reconnect();
  }
  
  long now = millis();
  if (now - lastMsg > 1000) {
    lastMsg = now;
    ++value;

    mpu6050.update();

    Serial.print("angleX : ");
    val = mpu6050.getAngleX();
    dtostrf(val, 4, 2, angle_valX);
    Serial.println(angle_valX);
    client.publish("angle_X", angle_valX);

    client.loop();

  }
}