import { Graph, mxDomHelpers } from '@maxgraph/core';

import { globalTypes } from '../.storybook/preview';

export default {
  title: 'Zoom_OffPage/LoD',
  argTypes: {
    ...globalTypes,
  },
};

const Template = ({ label, ...args }) => {
  const div = document.createElement('div');

  const container = document.createElement('div');
  container.style.position = 'relative';
  container.style.overflow = 'hidden';
  container.style.width = `${args.width}px`;
  container.style.height = `${args.height}px`;
  container.style.background = 'url(/images/grid.gif)';
  container.style.cursor = 'default';
  div.appendChild(container);

  // Creates the graph inside the given container
  const graph = new Graph(container);
  graph.centerZoom = false;

  // Links level of detail to zoom level but can be independent of zoom
  const isVisible = function () {
    return this.lod == null || this.lod / 2 < graph.view.scale;
  };

  // Gets the default parent for inserting new cells. This
  // is normally the first child of the root (ie. layer 0).
  const parent = graph.getDefaultParent();

  // Adds cells to the model in a single step
  graph.batchUpdate(() => {
    const v1 = graph.insertVertex(parent, null, '1', 20, 20, 80, 30);
    v1.lod = 1;
    v1.isVisible = isVisible;

    const v2 = graph.insertVertex(parent, null, '1', 200, 150, 80, 30);
    v2.lod = 1;
    v2.isVisible = isVisible;

    const v3 = graph.insertVertex(parent, null, '2', 20, 150, 40, 20);
    v3.lod = 2;
    v3.isVisible = isVisible;

    const v4 = graph.insertVertex(parent, null, '3', 200, 10, 20, 20);
    v4.lod = 3;
    v4.isVisible = isVisible;

    const e1 = graph.insertEdge(parent, null, '2', v1, v2, 'strokeWidth=2');
    e1.lod = 2;
    e1.isVisible = isVisible;

    const e2 = graph.insertEdge(parent, null, '2', v3, v4, 'strokeWidth=2');
    e2.lod = 2;
    e2.isVisible = isVisible;

    const e3 = graph.insertEdge(parent, null, '3', v1, v4, 'strokeWidth=1');
    e3.lod = 3;
    e3.isVisible = isVisible;
  });

  const buttons = document.createElement('div');
  div.appendChild(buttons);

  buttons.appendChild(
    mxDomHelpers.button('+', function () {
      graph.zoomIn();
    })
  );

  buttons.appendChild(
    mxDomHelpers.button('-', function () {
      graph.zoomOut();
    })
  );

  return div;
};

export const Default = Template.bind({});