export function clamp(value, min, max) {
  return Math.min(max, Math.max(min, value));
}

export function debounce(callback, delayMs = 150) {
  let timeoutId = null;
  return (...args) => {
    clearTimeout(timeoutId);
    timeoutId = setTimeout(() => callback(...args), delayMs);
  };
}

export function cellCoordsToIndex(row, col, cols) {
  return row * cols + col;
}

export function listLiveCells(buffer, rows, cols) {
  const result = [];
  for (let row = 0; row < rows; row += 1) {
    for (let col = 0; col < cols; col += 1) {
      const idx = row * cols + col;
      if (buffer[idx] === 1) {
        result.push([row, col]);
      }
    }
  }
  return result;
}

export function parsePositiveInt(value, fallback) {
  const parsed = Number.parseInt(value, 10);
  return Number.isFinite(parsed) && parsed > 0 ? parsed : fallback;
}