/*
 * Web Server for receiving values for 7dgit-LED shiftout through three registers
 * Sparkfun WiFly shield and library necessary
 * used call  http://ip-address/&123 with browser or wget
 * character 7,8,9 on URL Call is used
 */

#include "WiFly.h"
#include "Credentials.h"

const int CLOCK_PIN = 2; //common clock for shiftout
const int DATA_PIN = 3; //common data for shiftout
const int LATCH_PIN_1 = 4; //Latch for Digit 1 for shiftout
const int LATCH_PIN_2 = 5; //Latch for Digit 2 for shiftout
const int LATCH_PIN_3 = 6; //Latch for Digit 3 for shiftout

Server server(80);
String readString = String(100);
String shstring1; // shortened string for digit1
String shstring2; // shortened string for digit2
String shstring3; // shortened string for digit3

void setup() {
  WiFly.begin();
  if (!WiFly.join(ssid, passphrase)) {
    while (1) {
      // Hang on failure.
    }
  }

  Serial.begin(9600);
  Serial.print("IP: ");
  Serial.println(WiFly.ip());
  pinMode(LATCH_PIN_1, OUTPUT);
  pinMode(LATCH_PIN_2, OUTPUT);
  pinMode(LATCH_PIN_3, OUTPUT);
  pinMode(DATA_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);        

  server.begin();
}

void loop() {
  Client client = server.available();
  if (client) {
    // an http request ends with a blank line
    boolean current_line_is_blank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();

 //read char by char HTTP request
if (readString.length() < 100) {

//store characters to string
readString = readString + c;
}       
        if (c == '\n' && current_line_is_blank) {
shstring1 = readString.substring(6,7);
shstring2 = readString.substring(7,8);
shstring3 = readString.substring(8,9);
    Serial.println("this was the recognized number" );   
    Serial.println("digit 1=");
    Serial.println(shstring1);
    Serial.println("digit 2=");
    Serial.println(shstring2);
    Serial.println("digit 3=");
    Serial.println(shstring3);    

          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();

          client.print("received_via_url=");
          client.print("digit 1=");
          client.print(shstring1);
          client.print("digit 2=");
          client.print(shstring2);
          client.print("digit 3=");
          client.print(shstring3);

//controlling of shiftout for three digits 
if (shstring1.equals("0")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00111111);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("1")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00000110);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("2")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01011011);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("3")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01001111);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("4")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01100110);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("5")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01101101);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("6")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01111101);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("7")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00000111);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("8")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01111111);digitalWrite(LATCH_PIN_1, HIGH);}
if (shstring1.equals("9")){digitalWrite(LATCH_PIN_1, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01101111);digitalWrite(LATCH_PIN_1, HIGH);}

if (shstring2.equals("0")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00111111);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("1")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00000110);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("2")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01011011);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("3")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01001111);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("4")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01100110);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("5")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01101101);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("6")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01111101);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("7")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00000111);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("8")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01111111);digitalWrite(LATCH_PIN_2, HIGH);}
if (shstring2.equals("9")){digitalWrite(LATCH_PIN_2, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01101111);digitalWrite(LATCH_PIN_2, HIGH);}

if (shstring3.equals("0")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00111111);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("1")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00000110);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("2")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01011011);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("3")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01001111);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("4")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01100110);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("5")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01101101);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("6")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01111101);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("7")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B00000111);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("8")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01111111);digitalWrite(LATCH_PIN_3, HIGH);}
if (shstring3.equals("9")){digitalWrite(LATCH_PIN_3, LOW);shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, B01101111);digitalWrite(LATCH_PIN_3, HIGH);}

          break;
        }
        if (c == '\n') {
          // we're starting a new line
          current_line_is_blank = true;
        } else if (c != '\r') {
          // we've gotten a character on the current line
          current_line_is_blank = false;
        }
      }
    }
    // give the web browser time to receive the data
readString="";
delay(100);
    client.stop();
  }
}