#include <Arduino.h>
#include "segman.hh"

void setup() {
    Serial.begin(9600);

    pinMode(LED_BUILTIN, OUTPUT);

    pinMode(PIN_D1, OUTPUT);
    pinMode(PIN_D2, OUTPUT);
    pinMode(PIN_D3, OUTPUT);
    pinMode(PIN_D4, OUTPUT);

    pinMode(PIN_SA, OUTPUT);
    pinMode(PIN_SB, OUTPUT);
    pinMode(PIN_SC, OUTPUT);
    pinMode(PIN_SD, OUTPUT);
    pinMode(PIN_SE, OUTPUT);
    pinMode(PIN_SF, OUTPUT);
    pinMode(PIN_SG, OUTPUT);

    digitalWrite(PIN_D1, HIGH);
    digitalWrite(PIN_D2, HIGH);
    digitalWrite(PIN_D3, HIGH);
    digitalWrite(PIN_D4, HIGH);

    // digitalWrite(PIN_SA, HIGH);
}

int displayedValue = 0;
void displayValue() {
    int temp = displayedValue;

    for (int i = 0; i < 3; ++i) {
        int digit = temp % 10;

        writeDigit(3 - i, digit);

        temp /= 10;
    }
}

void measureLight() {
    int value = analogRead(PIN_LDR);
    displayedValue = 100 - (int)(value / 10);
}

unsigned long lastMillis = 0;
const int minDelta = 10;

void loop() {
    if (millis() - lastMillis >= minDelta) {
        measureLight();
        lastMillis = millis();
    }

    displayValue();
}