import { Pen, Node, Rect, PenType, getRect } from '@topology/core';

export function alignNodes(pens, rect, align)
{
  for (const item of pens)
  {
    if (!(item instanceof Node))
    {
      continue;
    }
    switch (align)
    {
      case 'left':
        item.rect.x = rect.x;
        break;
      case 'right':
        item.rect.x = rect.ex - item.rect.width;
        break;
      case 'top':
        item.rect.y = rect.y;
        break;
      case 'bottom':
        item.rect.y = rect.ey - item.rect.height;
        break;
      case 'center':
        item.rect.x = rect.center.x - item.rect.width / 2;
        break;
      case 'middle':
        item.rect.y = rect.center.y - item.rect.height / 2;
        break;
    }

    item.rect.floor();
    item.rect.calcCenter();
    item.init();
    item.calcChildrenRect();
  }
}

export function spaceBetween(pens, width)
{
  let space = 0;
  let cnt = 0;
  for (const item of pens)
  {
    if (!(item instanceof Node))
    {
      continue;
    }

    space += item.rect.width;
    ++cnt;
  }
  space = (width - space) / (cnt - 1);

  let left = 0;
  for (const item of pens)
  {
    if (!(item instanceof Node))
    {
      continue;
    }

    if (!left)
    {
      left = item.rect.x;
    }
    item.rect.x = left;
    left += item.rect.width + space;

    item.rect.floor();
    item.rect.calcCenter();
    item.init();
    item.calcChildrenRect();
  }
}