#include <LedControl.h>

const int DIN = 12;
const int CLK = 10;
const int CS  = 11;

LedControl lc = LedControl(DIN, CLK, CS, 1);

// --- FACE PATTERNS ---
// Happy face (eyes open, smiling)
byte happyOpen[8] = {
  B00000000,
  B01100110, // eyes row 0
  B01100110, // eyes row 1
  B00000000,
  B01000010,
  B01111110,
  B00111100,
  B00000000 // mouth row 4
};

// Happy face (eyes closed, smiling)
byte happyClosed[8] = {
  B00000000,
  B00000000,
  B00000000,
  B00000000,
  B01000010,
  B01111110,
  B00111100,
  B00000000 // mouth row 4
};

// Surprised face (eyes open, round mouth)
byte surprisedOpen[8] = {
  B00011000,
  B00011000,
  B00000000,
  B00000000,
  B00011000,
  B00100100,
  B00011000,
  B00000000
};

// Surprised face (eyes closed, round mouth)
byte surprisedClosed[8] = {
  B00000000,
  B00000000,
  B00000000,
  B00000000,
  B00011000,
  B00100100,
  B00011000,
  B00000000
};

void setup() {
  lc.shutdown(0, false);
  lc.setIntensity(0, 8);
  lc.clearDisplay(0);
}

void displayFace(byte face[8]) {
  for (int row = 0; row < 8; row++) {
    lc.setRow(0, row, face[row]);
  }
}

void loop() {
  // --- HAPPY face animation ---
  displayFace(happyOpen);
  delay(2000); // eyes open for 2 seconds
  displayFace(happyClosed);
  delay(200); // blink
  displayFace(happyOpen);
  delay(2000); // open again

  // // --- Switch to SURPRISED face ---
  // displayFace(surprisedOpen);
  // delay(2000);
  // displayFace(surprisedClosed);
  // delay(200); // blink
  // displayFace(surprisedOpen);
  // delay(2000);
}