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/*
 Created by Rui Santos
 Visit: http://randomnerdtutorials.com for more arduino projects

 Arduino with Ethernet Shield
 */

#include <SPI.h>
#include <Ethernet.h>

int led = 4;
int clock1 = 5;
int clock2 = 3;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };   //physical mac address
byte ip[] = { 192, 168, 1, 178 };                      // ip in lan (that's what you need to use in your browser. ("192.168.1.178")
byte gateway[] = { 192, 168, 1, 1 };                   // internet access via router
byte subnet[] = { 255, 255, 255, 0 };                  //subnet mask
EthernetServer server(80);                             //server port
String readString;

void setup() {
 // Open serial communications and wait for port to open:
  Serial.begin(9600);
   while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }
  pinMode(led, OUTPUT);
  pinMode(clock1, OUTPUT);
  pinMode(clock2, OUTPUT);
  digitalWrite(clock2, HIGH);

  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip, gateway, subnet);
  server.begin();
  Serial.print("Server's ip is ");
  Serial.println(Ethernet.localIP());
}


void loop() {
  // Create a client connection

  EthernetClient client = server.available();
  if (client) {
    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 += c;
          Serial.print(c);
         }

         //if HTTP request has ended
         if (c == '\n') {
           Serial.println(readString); //print to serial monitor for debuging
           client.println("HTTP/1.1 200 OK"); //send new page
           client.println("Content-Type: text/html");
           client.println();
           client.println("<HTML>");
           client.println("<BODY>");
           client.println("<H1>TEST</H1>");
           client.println("<H2>CONTROLS</H2>");
           client.println("<br />");
           client.println("<a href=/?ledOn>Turn LED On</a>");
           client.println("<a href=/?ledOff>Turn LED Off</a>");
           client.println("<br />");
           client.println("<a href=/?on>Turn Clock On</a>");
           client.println("<a href=/?off>Turn Clock Off</a>");
           client.println("</BODY>");
           client.println("</HTML>");
           delay(1);

           //stopping client
           client.stop();
           //controls the Arduino if you press the buttons
           if (readString.indexOf("?ledOn") >0){
               digitalWrite(led, HIGH);
           }
           if (readString.indexOf("?ledOff") >0){
               digitalWrite(led, LOW);
           }
           if (readString.indexOf("?on") >0){
            if (digitalRead(clock1)==0){
               digitalWrite(clock1, HIGH);
               Serial.println(digitalRead(clock1));
            }
            else {
               Serial.println("The clock is already on");
            }
           }

           if (readString.indexOf("?off") >0){
            if (digitalRead(clock1)==1){
               digitalWrite(clock1, LOW);
               Serial.println(digitalRead(clock1));
               Serial.println("Waiting 17 seconds...");
               delay(7000);
               Serial.println("10 seconds...");
               delay(5000);
               for (int x=5; x>0;x--) {
                Serial.print(x);
                Serial.println(" seconds...");
                delay(1000);
               }
               Serial.println("The clock is off");
            }
            else {
               Serial.println("The clock is already off");
            }
           }
            //clearing string for next read
            readString="";

         }
       }
    }
}
}