import type { NodeKey, Position } from "./types";

export function keyFor(row: number, column: number): NodeKey {
  return `${row}:${column}`;
}

export function parseKey(key: string): Position {
  const [row, column] = key.split(":").map(Number);
  return { row, column };
}

export function hexToRgb(hex: string) {
  const value = hex.replace("#", "");
  const normalized = value.length === 3 ? value.split("").map((part) => part + part).join("") : value;
  const int = Number.parseInt(normalized, 16);
  return {
    r: (int >> 16) & 255,
    g: (int >> 8) & 255,
    b: int & 255,
  };
}

export function tint(hex: string, alpha = 0.16) {
  const { r, g, b } = hexToRgb(hex);
  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
}

export function wait(milliseconds: number) {
  return new Promise<void>((resolve) => window.setTimeout(resolve, milliseconds));
}

export function shuffleArray<T>(items: T[]) {
  const next = [...items];

  for (let index = next.length - 1; index > 0; index -= 1) {
    const swapIndex = Math.floor(Math.random() * (index + 1));
    [next[index], next[swapIndex]] = [next[swapIndex], next[index]];
  }

  return next;
}