#include <WiFi.h>
#include <NTPClient.h>
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
 #include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

//pin led data lead is connected to
#define LED_PIN    13

// How many NeoPixels are attached to the Arduino?
#define LED_COUNT 104

// Replace with your network credentials
const char* ssid     = "SCOTTCAMPUS";
const char* password = "mavericks";

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);

// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
// Argument 1 = Number of pixels in NeoPixel strip
// Argument 2 = Arduino pin number (most are valid)
// Argument 3 = Pixel type flags, add together as needed:


// Variables to save date and time
String formattedDate;
String dayStamp;
String timeStamp;
String hourStamp;
String minuteStamp;
uint32_t color = strip.Color(255,0,0);

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);
  Serial.print("Connecting to ");
  Serial.println(ssid);
  
   
   
  strip.begin();           // INITIALIZE NeoPixel strip object (REQUIRED)
  colorWipe(strip.Color(0,0,0), 0);
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(100);
  
 
  
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

// Initialize a NTPClient to get time
  timeClient.begin();
  // Set offset time in seconds to adjust for your timezone, for example:
  // GMT +1 = 3600
  // GMT +8 = 28800
  // GMT -1 = -3600
  // GMT 0 = 0
  timeClient.setTimeOffset(-18000);


}


void loop() 
{
  while(!timeClient.update()) 
  {
    timeClient.forceUpdate();
  }

  // The formattedDate comes with the following format:
  // 2018-05-28T16:00:13Z
  // We need to extract date and time
  formattedDate = timeClient.getFormattedDate();

   // Extract date
  int splitT = formattedDate.indexOf("T");
  dayStamp = formattedDate.substring(0, splitT);

  timeStamp = formattedDate.substring(splitT+1, formattedDate.length()-1);

  //Extract hour, minute
  int splitC = timeStamp.indexOf(":");
  hourStamp = timeStamp.substring(0,splitC);
  minuteStamp = timeStamp.substring(splitC+1, timeStamp.length()-3);
 // Serial.println("Time: " + timeStamp);
  Serial.println("Hour: " + hourStamp);
  Serial.println("Minute: " + minuteStamp);

  colorWipe(strip.Color(0,0,0), 0);
  strip.show();            // Turn OFF all pixels ASAP
  showTime(hourStamp.toInt(),minuteStamp.toInt(),color);

  delay(300000);
}

// Fill strip pixels one after another with a color. Strip is NOT cleared
// first; anything there will be covered pixel by pixel. Pass in color
// (as a single 'packed' 32-bit value, which you can get by calling
// strip.Color(red, green, blue) as shown in the loop() function above),
// and a delay time (in milliseconds) between pixels.
void colorWipe(uint32_t color, int wait) {
  for(int i=-1; i<strip.numPixels(); i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
    delay(wait);                           //  Pause for a moment
  }
}


//Sets up a section of the leds, starting at "start" value and ending at "END".
void SectionWrite(uint32_t color, int wait,int start, int END) {
  for(int i=start - 1; i<=END - 1; i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
    delay(wait);                           //  Pause for a moment
  }
  strip.show();
}
 /*
 * I T R I S C T E N H A L F
 * Q U A R T E R T W E N T Y
 * F I V E C M I N U T E S X
 * P A S T T O E O N E T W O
 * T H R E E F O U R F I V E
 * S I X S E V E N E I G H T
 * N I N E T E N E L E V E N
 * T W E L V E L O C L O C K
 */

void showTime(int hour, int minute, uint32_t color)
{
  if(minute >= 35)
  {
    hour++;
  }
  if(hour > 12)
  {
    hour = hour - 12;
  }
  strip.clear();
  
  //Show "it is"
  SectionWrite(color,1,1,2);
  SectionWrite(color,1,4,5);

  
  //FIVE MINUTES
  if((minute >= 5) && (minute < 10) || (minute >= 55) && (minute <= 59))
  {
    SectionWrite(color,1,27,30);
    SectionWrite(color,1,32,38);
  }

  //TEN MINUTES
  if((minute >= 10 && minute < 15) || (minute >= 50) && (minute < 55))
  {
    SectionWrite(color,1,7,9);
    SectionWrite(color,1,32,38);
  }

  //QUARTER
  if((minute >= 15 && minute < 20) || (minute >= 45) && (minute < 50))
  {
    SectionWrite(color,1,20,26);
  }

  //TWENTY MINUTES
  if((minute >= 20 && minute < 25) || (minute >= 40) && (minute < 45))
  {
    SectionWrite(color,1,14,19);
    SectionWrite(color,1,32,38);
  }  

  //TWENTY FIVE MINUTES
  if((minute >= 25 && minute < 30) || (minute >= 35) && (minute < 40))
  {
    SectionWrite(color,1,14,19);
    SectionWrite(color,1,27,30);
    SectionWrite(color,1,32,38);
  }  

  //HALF
  if(minute >= 30 && minute < 35)
  {
    SectionWrite(color,1,10,13);
  }    

  //PAST
  if(minute >= 5 && minute < 35)
  {
    SectionWrite(color,1,49,52);
  }

  //TO
  if(minute >= 35)
  {
    SectionWrite(color,1,47,48);
  }
  
  //hours
  if(hour == 1)
  {
    SectionWrite(color,1,43,45);
  }
  else if(hour == 2)
  {
    SectionWrite(color,1,40,42);
  }
  else if(hour == 3)
  {
    SectionWrite(color,1,53,57);
  }
  else if(hour == 4)
  {
    SectionWrite(color,1,58,61);
  }
  else if(hour == 5)
  {
    SectionWrite(color,1,62,65);
  }
  else if(hour == 6)
  {
    SectionWrite(color,1,76,78);
  }
  else if(hour == 7)
  {
    SectionWrite(color,1,71,75);
  }
  else if(hour == 8)
  {
    SectionWrite(color,1,66,70);
  }
  else if(hour == 9)
  {
    SectionWrite(color,1,79,82);
  }
  else if(hour == 10)
  {
    SectionWrite(color,1,83,85);
  }
  else if(hour == 11)
  {
    SectionWrite(color,1,86,91);
  }
  else if(hour == 12 | hour == 0)
  {
    SectionWrite(color,1,99,104);
  }

  //O CLOCK
  if((minute >= 0) && (minute < 5))
  {
    SectionWrite(color,1,92,97);
  }
}