#include <ESP8266HTTPClient.h>
#include <ESP8266WiFi.h>
#include <SoftwareSerial.h>

SoftwareSerial mySerial(D1, D4);

const byte numChars = 32;
char receivedChars[numChars];
char tempChars[numChars];
char Message[numChars] = { 0 };
boolean newData = false;

/* New Variable`s */
int network_counter;
bool network;
unsigned long led_timer;

/* Function`s */
/* LED Blink */
void led_indication() {
  if(!network) {
    if((millis() - led_timer) >= 500) {
      if(digitalRead(LED_BUILTIN) == LOW) {
        digitalWrite(LED_BUILTIN, HIGH);
      } else {
        digitalWrite(LED_BUILTIN, LOW);
      }
      led_timer = millis();
    }
  }
  if((network) && (digitalRead(LED_BUILTIN)) == HIGH) {
    digitalWrite(LED_BUILTIN, LOW);
  }
}

/* Check network state */
void network_check() {
  if((WiFi.status() != WL_CONNECTED) && (network)) {
    led_timer = millis();
    network = false; // Update network status (Wifi off)
  } else if((WiFi.status() == WL_CONNECTED) && (!network)) {
    network = true; // Update network status (Wifi on)
  }
}

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);
  mySerial.begin(9600);
  digitalWrite(LED_BUILTIN, LOW);
  WiFi.begin("Keenetic-8481", "k3wkfCkd");
  while((WiFi.status() != WL_CONNECTED) && (network_counter <= 5)) {
    delay(300);
    network_counter++;
  }
}

void loop()
{
  delay(5000);
  HTTPClient http;
  http.begin("http://wifitest7410.000webhostapp.com/system.php");
  http.addHeader("Content-Type", "application/x-www-form-urlencoded");
  http.POST("temp1=77");
  http.writeToStream(&Serial);
  http.end();
  /* Check wifi network */
  network_check();
  /* Led blink */
  led_indication();
  /* UART bus */
  recvWithStartEndMarkers();
  if(newData == true) {
   strcpy(tempChars, receivedChars);
   parseData();
   msgData();
   newData = false;
  }
}

// RAPI Message Protocol
void recvWithStartEndMarkers()
{
    static boolean recvInProgress = false;
    static byte ndx = 0;
    char startMarker = '<';
    char endMarker = '>';
    char rc;

    while (mySerial.available() > 0 && newData == false) {
        rc = mySerial.read();

        if (recvInProgress == true) {
            if (rc != endMarker) {
                receivedChars[ndx] = rc;
                ndx++;
                if (ndx >= numChars) {
                    ndx = numChars - 1;
                }
            }
            else {
                receivedChars[ndx] = '\0'; // terminate the string
                recvInProgress = false;
                ndx = 0;
                newData = true;
            }
        }
        else if (rc == startMarker) {
            recvInProgress = true;
        }
    }
}

// RAPI Message Protocol
void parseData()
{ // split the data into its parts
    char* strtokIndx; // this is used by strtok() as an index
    strtokIndx = strtok(tempChars, ","); // get the first part - the string
    strcpy(Message, strtokIndx); // copy it to messageFromPC
}

void msgData() {
  if(Message != "") {
    //Serial.println(Message);
    /*HTTPClient http;
    http.begin("http://wifitest7410.000webhostapp.com/system.php");
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");
    http.POST("temp1=77");
    http.writeToStream(&Serial);
    http.end();*/
  }

  /*if(strcmp("130", Message) == 0) {
    digitalWrite(LED_BUILTIN, HIGH);
  } else if(strcmp("150", Message) == 0) {
	  digitalWrite(LED_BUILTIN, LOW);
  }*/
}