/* This program contains all 20 possible combinations for a lane wich have an orientation.
 * The brightness of the color patterns is set here to 255.
 * Furthermore colors can be transmitted via rrr-ggg-bbb values.
 * It uses serial communication.
 */
#include <Adafruit_NeoPixel.h>
#define LED_PIN 9
#define NUM_LEDS 29

String redString; String greenString; String blueString; String inputString; String color_pattern;

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);

/* Info:
 * set the color of a pixel:
 * strip.setPixelColor(n, red, green, blue); 
 * pixel starts from n=0
 * 
 * Multiple pixels can be set to the same color using the fill() function,
 * which accepts one to three arguments. Typically it’s called like this:
 * strip.fill(color, first, count)
 */

int  pause = 3000; // pause in ms


// Definition of Colors
int led_brightness = 255;
uint32_t red = strip.Color(led_brightness,0,0);
uint32_t green = strip.Color(0,led_brightness,0);
uint32_t blue = strip.Color(0,0,led_brightness);
uint32_t yellow = strip.Color(led_brightness,led_brightness,0);
uint32_t magenta = strip.Color(led_brightness,0,led_brightness);
uint32_t cyan = strip.Color(0,led_brightness,led_brightness);


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  
  strip.begin();
  strip.clear(); strip.show(); // turn off all LEDs
  

}

void loop() {
  // put your main code here, to run repeatedly:
      if (Serial.available()) {
        inputString = Serial.readString();
        color_pattern = inputString;
        Serial.print("Folgender Text wurde empfangen: ");
        Serial.println(inputString);

        //String aufteilen in R G B
        redString=inputString.substring(0,2+1);
        greenString=inputString.substring(4,6+1);
        blueString=inputString.substring(8,10+1);
        }
  
  // define color patterns
  if (color_pattern == "color_pattern_01") {
     SetColorCombination(red, green, blue); // color pattern 01
  }
  else if (color_pattern == "color_pattern_02") {
     SetColorCombination(red, green, yellow); // color pattern 02
  }
  else if (color_pattern == "color_pattern_03") {
     SetColorCombination(red, green, magenta); // color pattern 03
  }
  else if (color_pattern == "color_pattern_04") {
     SetColorCombination(red, green, cyan); // color pattern 04
  }
  else if (color_pattern == "color_pattern_05") {
     SetColorCombination(red, blue, yellow); // color pattern 05
  }
  else if (color_pattern == "color_pattern_06") {
     SetColorCombination(red, blue, magenta); // color pattern 06
  }
  else if (color_pattern == "color_pattern_07") {
     SetColorCombination(red, blue, cyan); // color pattern 07
  }
  else if (color_pattern == "color_pattern_08") {
     SetColorCombination(red, yellow, magenta); // color pattern 08
  }
  else if (color_pattern == "color_pattern_09") {
     SetColorCombination(red, yellow, cyan); // color pattern 09
  }
  else if (color_pattern == "color_pattern_10") {
     SetColorCombination(red, magenta, cyan); // color pattern 10
  }

  else if (color_pattern == "color_pattern_11") {
     SetColorCombination(green, blue, yellow); // color pattern 11
  }
  else if (color_pattern == "color_pattern_12") {
     SetColorCombination(green, blue, magenta); // color pattern 12
  }
  else if (color_pattern == "color_pattern_13") {
     SetColorCombination(green, blue, cyan); // color pattern 13
  }
  else if (color_pattern == "color_pattern_14") {
     SetColorCombination(green, yellow, magenta); // color pattern 14
  }
  else if (color_pattern == "color_pattern_15") {
     SetColorCombination(green, yellow, cyan); // color pattern 15
  }
  else if (color_pattern == "color_pattern_16") {
     SetColorCombination(green, magenta, cyan);  // color pattern 16
  }

  else if (color_pattern == "color_pattern_17") {
     SetColorCombination(blue, yellow, magenta);  // color pattern 17
  }
  else if (color_pattern == "color_pattern_18") {
     SetColorCombination(blue, yellow, cyan);  // color pattern 18
  }
  else if (color_pattern == "color_pattern_19") {
     SetColorCombination(blue, magenta, cyan);  // color pattern 19
  }
  else if (color_pattern == "color_pattern_20") {
     SetColorCombination(yellow, magenta, cyan);  // color pattern 20
  }
  else{
    strip.clear();
    strip.fill(strip.Color(redString.toInt(),greenString.toInt(),blueString.toInt()),0,0);
    strip.show();
  }

}

// Define Functions
void SetColorCombination(uint32_t color_1, uint32_t color_2, uint32_t color_3){
  // Set the color combination for the whole strip

  //determine whole numer of pixels, which can be displayed in a 3-row-constellation
  int number_of_3rowpixels = NUM_LEDS - (NUM_LEDS % 3); // should be 27 if 29 leds are mounted. Modulo = 2: (29 % 3)=(9x3) +2
  int lastpixelindex = number_of_3rowpixels-1; // index starts at 0

  for(int i=0; i<=lastpixelindex; i=i+3){
    strip.setPixelColor(i, color_1);
    strip.setPixelColor(i+1, color_2);
    strip.setPixelColor(i+2, color_3);
  }
  
  strip.show();
  
}