#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>
#include <Adafruit_NeoPixel.h>

#ifndef STASSID
#define STASSID ""
#define STAPSK  ""
#endif

int neoPixelPin = 2;
// How many NeoPixels we will be using, charge accordingly
int numPixels = 8;

// Instatiate the NeoPixel from the ibrary
Adafruit_NeoPixel strip = Adafruit_NeoPixel(numPixels, neoPixelPin, NEO_GRB + NEO_KHZ800);


const char* ssid = STASSID;
const char* password = STAPSK;

void setup() {
  Serial.begin(115200);
  Serial.println("Booting");
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.waitForConnectResult() != WL_CONNECTED) {
    Serial.println("Connection Failed! Rebooting...");
    delay(5000);
    ESP.restart();
  }
  ArduinoOTA.begin();
  Serial.println("Ready");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());



  strip.begin();  // initialize the strip
  strip.show();   // make sure it is visible
  strip.clear();  // Initialize all pixels to 'off'

  uint8_t red1 = 0, green1 = 255, blue1 = 0;
  uint8_t red2 = 255, green2 = 100, blue2 = 100;

  for (int i = 0; i < 50; i++)
  {
      uint8_t red = mix(red1, red2, i, 50);
      uint8_t green = mix(green1, green2, i, 50);
      uint8_t blue = mix(blue1, blue2, i, 50);
      strip.setPixelColor(i, red, green, blue);
  }
}

void loop() {
  ArduinoOTA.handle();
}

uint8_t mix(uint8_t a, uint8_t b, int pct, int range) {
    if (pct <= 0) return a;
    if (pct >= range) return b;
    return (((int32_t)a * (range-pct)) / range) + (((uint32_t)b * pct) / range);
}