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//---------------  Servo Motor -------------------------------------

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

#include <Servo.h>
Servo microservo;
int pos = 0;

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 1, 188 };
byte gateway[] = { 192, 168, 1, 1 };
byte subnet[] = { 255, 255, 255, 0 };
EthernetServer server(8089);
String readString;

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);

  microservo.attach(7);


  Ethernet.begin(mac, ip, gateway, subnet);
  server.begin();
  Serial.print("server is at ");
  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 (c == '\n') {
          Serial.println(readString);

          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          client.println("<HTML>");
          client.println("<HEAD>");
          client.println("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no\">");
          client.println("<meta name='apple-mobile-web-app-status-bar-style' content='black-translucent' />");
          client.println("<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css\">");
          //<!-- Optional theme -->
          client.println("<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css\">");
          //<!-- Latest compiled and minified JavaScript -->
          client.println("<script src=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js\"></script>");


          client.println("</HEAD>");
          client.println("<BODY>");
          client.println("<center>");
          client.println("<H1>Arduino Servo Motor</H1>");
          client.println("<hr />");
          client.println("<br />");

          client.println("<br />");
          client.println("<br />");
          client.println("<a href=\"/?button2on\" class=\"btn btn-primary\">SERVO</a>");
          client.println("<a href=\"/?button2off\" class=\"btn btn-primary\">SERVO</a>");
          client.println("<br />");
          client.println("<br />");
          client.println("<br />");
          client.println("<br />");

          client.println("<br />");

          client.println("<br />");
          client.println("<br />");
          client.println("<br />");
          client.println("</center>");
          client.println("</BODY>");
          client.println("</HTML>");

          delay(1);

          client.stop();
          //controls the Arduino if you press the buttons


          if (readString.indexOf("?button2on") > 0) {
            for (pos = 0; pos < 180; pos += 3)              // goes from 0 degrees to 180 degrees
            {                                               // in steps of 1 degree
              microservo.write(pos);                        // tell servo to go to position in variable 'pos'
              delay(15);                                    // waits 15ms for the servo to reach the position
            }
          }
          if (readString.indexOf("?button2off") > 0) {
            for (pos = 180; pos >= 1; pos -= 3)             // goes from 180 degrees to 0 degrees
            {
              microservo.write(pos);                        // tell servo to go to position in variable 'pos'
              delay(15);                                    // waits 15ms for the servo to reach the position
            }
          }
          //clearing string for next read
          readString = "";

        }
      }
    }
  }
}