////////////////////////////////////
// PIÑATA TWITTER                 //
// Developed by MID               //
// Programmed by Alex Posada      //
////////////////////////////////////

// time betwen every petition
#define postingInterval  8000
// time for every tweet
//#define timeTweet        1000


#include <SPI.h>
#include <Ethernet.h>
#include <TextFinder.h>
//#include <stdlib.h>

// assign a MAC address for the ethernet controller.
// fill in your address here:
byte mac[] = { 
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};

// for manual configuration:
IPAddress ip(10,0,1,20);

// initialize the library instance:
EthernetClient client;

long lastConnectionTime = 0;        // last time you connected to the server, in milliseconds
boolean lastConnected = false;      // state of the connection last time through the main loop

int globoPin = 7;
int timeTweet = 1000;
unsigned long newTweets = 0;
unsigned long timerTweet = 0;
unsigned long timeLimit = 0;

TextFinder  finder( client ); 

void setup() {

  pinMode(globoPin, OUTPUT);
  digitalWrite(globoPin, HIGH);
  // start serial port:
  Serial.begin(9600);
  // give the ethernet module time to boot up:
  // start the Ethernet connection:
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // Configure manually:
    Ethernet.begin(mac, ip);
  }

  // print your local IP address:
  Serial.print("My IP address: ");
  for (byte thisByte = 0; thisByte < 4; thisByte++) {
    // print the value of each byte of the IP address:
    Serial.print(Ethernet.localIP()[thisByte], DEC);
    Serial.print("."); 
  }
  Serial.println();

  connectToserver();
  
  digitalWrite(globoPin, LOW);

}

void loop() {

  while (client.connected()) 
  {

    newTweets = 0;

    while (client.available()) //while
    {  
      
      //char c = client.read();
      //Serial.print(c);

      //finder.findUntil("utf-8", "\n\r");
      finder.find("Connection:");
      newTweets = finder.getValue(); // get numeric value
      Serial.print(newTweets);
      Serial.println(" tweets");

      lastConnected = 0;

    }
  }


  if( ((!client.connected()) && !lastConnected) ) 
  {
    Serial.println();
    Serial.println("Disconnecting by server");
    lastConnected = 1;
    client.flush();
    client.stop();
  }
  else
  {
    Serial.print('.'); 
    delay(1000);
  }


  // si no hay nuevos hashtags!!!
  if(newTweets == 0)
  {
    if ( (!client.connected() ) && (millis() - lastConnectionTime > postingInterval) )
    {
      Serial.println();
      Serial.println("Disconnecting by timer");
      lastConnected = 1;
      client.flush();
      client.stop();
      connectToserver();
    }
  }
  else  // si hay nuevos hashtags!!!
  {
    //newTweets = 50;
    Serial.print(newTweets);
    Serial.println(" new tweets detected!!!");
    Serial.print("Inflating ");
    //Serial.print(newTweets*2);
    //Serial.println(" seconds");

    timerTweet = millis();
    timeLimit = newTweets * timeTweet;
    Serial.print(timeLimit);
    Serial.println(" miliseconds");
    while(millis() - timerTweet < timeLimit )  // numero de tweets nuevos por 2 seg cada uno
    {  
      digitalWrite(globoPin, HIGH);
      Serial.print('='); 
      delay(1000);
    }
    Serial.println("> Inflated!");
    digitalWrite(globoPin, LOW);
    newTweets = 0;
  }

}



// this method makes a HTTP connection to the server:
void connectToserver() {

  //////////////////////////////////////////////////////////
  // tweet petition
  //////////////////////////////////////////////////////////

  if (client.connect("pinyata.mediainteractivedesign.com", 3000)) {
    Serial.println("connecting...");
    Serial.println();
    // send the HTTP PUT request. 
    // fill in your feed address here:
    //client.println("GET /list/ HTTP/1.0");
    client.println("GET /t2p/ HTTP/1.0");
    client.println("host: pinyata.mediainteractivedesign.com");
    client.println();

    // note the time that the connection was made:
    lastConnectionTime = millis();
  } 
  else {
    // if you couldn't make a connection:
    Serial.println("connection failed");
  }

}