#include <ESP8266WiFi.h>
#include <Adafruit_NeoPixel.h>

#define PIN 15  //  DIN PIN (GPIO15, D8)
#define NUMPIXELS 50  // Number of you led
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

const char* ssid = "YOURSSID";    //  Your Wi-Fi Name
const char* password = "YOURPASSWORD";   // Wi-Fi Password
 
int value = 2;
int wait = 10;
long firstPixelHue = 0;
unsigned long previousMillis = 0;
int r, g, b = 0;

WiFiClient client;
WiFiServer server(80);

String requestClient;
 
void setup()
{
  Serial.begin(115200); //Default Baudrate

  Serial.print("Connecting to the Newtork");

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    //unsigned long currentMillis = millis();
    //if(currentMillis - previousMillis >= 500)
    //{
    //  previousMillis = currentMillis;
      Serial.print(".");
    //}
  }

  Serial.println("WiFi connected"); 

  server.begin();  // Starts the Server

  Serial.println("Server started");

  Serial.print("IP Address of network: "); // will IP address on Serial Monitor
  Serial.println(WiFi.localIP());
  Serial.print("Copy and paste the following URL: http://"); // Will print IP address in URL format
  Serial.print(WiFi.localIP());
  Serial.println("/");

  pixels.begin();
}

void loop()
{
  request();
    
  if(value == 1)
  {
    for(int i=0; i<NUMPIXELS; i++) 
    {
      pixels.setPixelColor(i, pixels.Color(r, g, b));
       
    }pixels.show(); 
  }
  
  if(value == 0)
  {
    unsigned long currentMillis = millis();
    if(currentMillis - previousMillis >= 10)
    {
      previousMillis = currentMillis;
      firstPixelHue += 256;
      for(int i=0; i<pixels.numPixels(); i++) 
      {
        int pixelHue = firstPixelHue + (i * 65536L / pixels.numPixels());
        pixels.setPixelColor(i, pixels.gamma32(pixels.ColorHSV(pixelHue)));   
      }
      pixels.show();
    }//delay(wait);
  }
}

void update()
{
  
}

void request()
{ 
  while(!client.connected())
  {
    client = server.available();
  }
  
  if(client.connected())
  {
    if(client.available())
    {
      String request = client.readStringUntil(' ');
      
      Serial.print("request String: ");
      Serial.println(request);

     
      int colTemp = request.toInt();
      Serial.print("request String als Int: ");
      Serial.println(colTemp);
      if(colTemp != 0)
      {
        Serial.print("Farbtemperatur als Int: ");
        Serial.println(colTemp);
      }
      
      if(request.indexOf("#")>=0) 
      {
        Serial.print("Hex als String gefiltert: ");
        Serial.println(request);

        request.remove(0,1);
        Serial.print("Hex als long: ");
        long color = strtol(request.c_str(), NULL, 16);
        Serial.println(color);  
        r = color / 65536;
        g = (color - r * 65536) / 256;
        b = color - r * 65536 - g * 256;  
      }

      if(request.equals("ON"))
      {
        value = HIGH;
      }
      
      if(request.equals("OFF"))
      {
        value = LOW;
      }
    }
  }
}