#include <FastLED.h>

#define NUM_LEDS 49                   // Neopixel ring with 12 LEDs
#define DATA_PIN 0                    // Pin connected to the data input of the ring
#define LED_TYPE WS2812B              // Neopixel rings use WS2812B
#define COLOR_ORDER GRB               // Color order for Neopixel rings

CRGB leds[NUM_LEDS];

unsigned long previousMillis = 0;     // Timer variable for delay
unsigned long currentMillis = 0;      // To track time for switching colors
int switchInterval = 7000;            // Initial delay of 7000ms (7 seconds)
int cycles = 0;                       // Count of how many color changes have happened
int cycleThreshold = 4;               // Number of cycles after which the delay decreases
int decreaseAmount = 2000;             // Amount by which to decrease the delay (in milliseconds)
bool colorToggle = false;             // To track which color to show

void setup() {
    FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
    FastLED.clear();
    FastLED.show();
}

void loop() {
    currentMillis = millis();  // Get the current time
    
    // Check if the switch interval has passed
    if (currentMillis - previousMillis >= switchInterval) {
        previousMillis = currentMillis;  // Reset the timer
        colorToggle = !colorToggle;      // Toggle color
        cycles++;                        // Increment the cycle counter

        // After every 'cycleThreshold' cycles, reduce the delay by 'decreaseAmount'
        if (cycles >= cycleThreshold) {
            cycles = 0;  // Reset cycle counter
            if (switchInterval > decreaseAmount) {  // Prevent the delay from going too low
                switchInterval -= decreaseAmount;  // Reduce delay by 'decreaseAmount' milliseconds
            }
        }
    }

    // Set the color based on the toggle state
    if (colorToggle) {
        fill_solid(leds, NUM_LEDS, CRGB(175, 21, 83));  // Color 1
    } else {
        fill_solid(leds, NUM_LEDS, CRGB(40, 185, 115));  // Color 2
    }

    FastLED.show();  // Display the color
}