#include <TM1637Display.h>
#include <SPI.h>
#include <Ethernet.h>
#include <Servo.h>

#define relay_pin 2
#define servo_pin 6
#define clock_pin 7
#define data_pin 8
#define button_pin 3

/**
 * pin | text
 *   2 | light
 *   3 | button
 *   4 | ethernet?
 *   6 | servo audio
 *   7 | clock screen
 *   8 | data screen
 *  10 | ethernet shield
 *  11 | ethernet
 *  12 | ethernet
 *  13 | ethernet
 */


// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
// the router's gateway address:
byte gateway[] = { 10, 0, 0, 1 };
// the subnet:
byte subnet[] = { 255, 255, 0, 0 };

IPAddress ip(10, 3, 1, 1);
EthernetServer server(7979);//protocoll: [a/l][n/f/t/v] -> audio / light , on / off / toggle / toggle var
Servo servo;
TM1637Display display(clock_pin, data_pin);

boolean audio_ = false;//stadi
boolean light_ = false;

int pos = 0;//leer klein
int pos_ = 17;//triggered klein

unsigned long dispon = 0;
boolean isdispon = false;

void setup() {
  disabledisp();
  
  pinMode(relay_pin, OUTPUT);//relay

  servo.attach(servo_pin);//servo
  servo.write(pos);//reset servo
  delay(200);

  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip, gateway, subnet);
  server.begin();
}


void loop() {
  handle_screen();
  
  // listen for incoming clients
  EthernetClient client = server.available();
  boolean audio = false;
  boolean light = false;
  if (client) {
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        
        if(c == 'a')//select audio
          audio = true;
        else if(c =='l') //select light
          light = true;
        else if(c == 'n') {//on
          if(audio && !audio_) {//turn audio on
            toggle_audio();
          }
          if(light && !light_) {//turn light on
            toggle_light();
          }
          //reset
          audio = false;
          light = false;
        }else if(c == 'f') {//off
          if(audio && audio_) {//turn audio off
            toggle_audio();
          }
          if(light && light_) {//turn light off
            toggle_light();
          }
          audio = false;
          light = false;
        }else if( c == 't') {//toggle
          if(audio) {//togle audio
            toggle_audio();
          }
          if(light) {//toggle light
            toggle_light();
          }
          audio = false;
          light = false;
        }else if(c == 'v') {//toggle var
            if(audio)
              audio_ = !audio_;
            if(light)
              light_ = !light_;
          audio = false;
          light = false;
        } else {
          //client.print("FAILED");
        }
        //client.print("OK");
        //client.flush();
      }
    }
    // give the client time to receive the data
    delay(15);
    // close the connection:
    client.stop();
    //Ethernet.maintain();
  }
}


void handle_screen() {
  if(digitalRead(button_pin)) {
     dispon = millis();
  }

  
  if((millis() - dispon)/1000 < 5) {
    //diplay on
    if(!isdispon)//falls es noch nicht on ist
      enabledisp();

      
  } else {
    //display off
    if(isdispon)//falls es noch nicht off ist
      disabledisp();
  }
}

void enabledisp() {
  //set light
  display.setBrightness(0x0f);
  dispon = true;
}
void disabledisp() {
  //set dark
  display.setBrightness(0x00);
  dispon = false;
}

void toggle_audio() {
  servo.write(pos_);//kleiner (stereo anlage)
  delay(200);
  servo.write(pos);//reset kleine
  audio_ = !audio_;
}

void toggle_light() {
  light_ = !light_;
  if(light_)
    digitalWrite(relay_pin, HIGH);
   else
     digitalWrite(relay_pin, LOW);
}