#include <TM1637Display.h>
#include <RTClib.h>
#include <DHT.h>
#include <FastLED.h>

// TM1637 Display
const int PIN_CLK = 2;
const int PIN_DIO = 3;
TM1637Display display(PIN_CLK, PIN_DIO);

// NeoPixel Streifen
const int NUM_LEDS = 10;
CRGB ledsTemp[NUM_LEDS];   // Pin 5
CRGB ledsHumid[NUM_LEDS];  // Pin 6

// Sensoren
DHT dht(4, DHT22);
RTC_DS1307 rtc;

// Farbe basierend auf Position (0-9) in der Skala
CRGB getScaleColor(int position) {
    // Mitte (4,5) = Grün, Ränder (0,9) = Rot
    int distFromCenter = abs(position - 4);

    switch (distFromCenter) {
        case 0: return CRGB::Green;     // Optimal
        case 1: return CRGB::GreenYellow;
        case 2: return CRGB::Yellow;
        case 3: return CRGB::Orange;
        default: return CRGB::Red;    // Zu extrem
    }
}

// Wert auf Position (0-9) mappen
int mapToScale(float value, float min, float max) {
    int pos = map(value, min, max, 0, 9);
    return constrain(pos, 0, 9);
}

void updateTempLeds(float temp) {
    int activePos = mapToScale(temp, 15.0, 30.0);

    for (int i = 0; i < NUM_LEDS; i++) {
        if (i <= activePos) {
            ledsTemp[i] = getScaleColor(i);
        } else {
            ledsTemp[i] = CRGB::Black;
        }
    }
    FastLED.show();
}

void updateHumidLeds(float humid) {
    int activePos = mapToScale(humid, 30.0, 70.0);

    for (int i = 0; i < NUM_LEDS; i++) {
        if (i <= activePos) {
            ledsHumid[i] = getScaleColor(i);
        } else {
            ledsHumid[i] = CRGB::Black;
        }
    }
    FastLED.show();
}

void loop() {
    // Uhrzeit auf TM1637 anzeigen
    DateTime now = rtc.now();
    int displayTime = now.hour() * 100 + now.minute();
    display.showNumberDecEx(displayTime, 0b01000000,
                            true);  // Doppelpunkt an

    // Alle 2 Sekunden Sensor lesen
    static unsigned long lastRead = 0;
    if (millis() - lastRead > 2000) {
        lastRead = millis();

        float temp = dht.readTemperature();
        float humid = dht.readHumidity();

        if (!isnan(temp) && !isnan(humid)) {
            updateTempLeds(temp);
            updateHumidLeds(humid);
        }
    }
    delay(500);  // Doppelpunkt-Blinken
}