#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <Adafruit_NeoPixel.h>

#define PIN            D4
#define NUMPIXELS      4
char* color;
int mode;
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

const char* ssid = "Elyas";
const char* password = "20152015";


ESP8266WebServer server(80);


// SERVER FUNCTIONS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++

void handleRoot() {
  server.send(200, "text/plain", "hello from esp8266!");
  color = "white";
  mode = 0;
}

void handleNotFound(){
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET)?"GET":"POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i=0; i<server.args(); i++){
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }
  server.send(404, "text/plain", message);
}


// PIXEL RGB LED FUNCTIONS ++++++++++++++++++++++++++++++++++++++++++++++++++

void white_f(){
  
pixels.setPixelColor(0, pixels.Color(150,150,150));

pixels.setPixelColor(1, pixels.Color(150,150,150));

pixels.setPixelColor(2, pixels.Color(150,150,150));

pixels.setPixelColor(3, pixels.Color(150,150,150));

pixels.show();

}


void green_f(){
  
pixels.setPixelColor(0, pixels.Color(0,15,0));

pixels.setPixelColor(1, pixels.Color(0,15,0));

pixels.setPixelColor(2, pixels.Color(0,15,0));

pixels.setPixelColor(3, pixels.Color(0,15,0));

pixels.show();

}

// VOID SETUP +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

void setup() {
  pixels.begin();
  pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

 if (MDNS.begin("aq")) {
    Serial.println("MDNS responder started find webpage at http://aq.local/"); // Ne radi, zasad nebitno
  server.begin();
  Serial.println("HTTP server started");
  }
  
  server.on("/", handleRoot);

  server.on("/green", [](){
    server.send(200, "text/plain", "the LEDs are now green! :)");
    color = "green";
    mode = 1;
  });


  server.onNotFound(handleNotFound);

  server.on("/restart", []() {
    server.send(200, "text/plain", "restarting..." );
    ESP.restart();
    });
}

void setMode(){
  if(mode == 0){
    white_f();
    digitalWrite(LED_BUILTIN, HIGH);
    delay(1);
  }
  if(mode == 1){
    green_f();
    digitalWrite(LED_BUILTIN, LOW);
    delay(1);
  }
}
void loop() {
  server.handleClient();
  setMode();
 
}