import * as select from '../../../instrumented/svgcanvas/select.js';
import { NS } from '../../../instrumented/common/namespaces.js';

describe('select', function () {
  const sandbox = document.createElement('div');
  sandbox.id = 'sandbox';

  let svgroot;
  let svgcontent;
  const mockConfig = {
    dimensions: [ 640, 480 ]
  };
  const dataStorage = {
    _storage: new WeakMap(),
    put: function (element, key, obj) {
      if (!this._storage.has(element)) {
        this._storage.set(element, new Map());
      }
      this._storage.get(element).set(key, obj);
    },
    get: function (element, key) {
      return this._storage.get(element).get(key);
    },
    has: function (element, key) {
      return this._storage.has(element) && this._storage.get(element).has(key);
    },
    remove: function (element, key) {
      const ret = this._storage.get(element).delete(key);
      if (!this._storage.get(element).size === 0) {
        this._storage.delete(element);
      }
      return ret;
    }
  };

  /**
  * @implements {module:select.SVGFactory}
  */
  const mockFactory = {
    createSVGElement (jsonMap) {
      const elem = document.createElementNS(NS.SVG, jsonMap.element);
      Object.entries(jsonMap.attr).forEach(([ attr, value ]) => {
        elem.setAttribute(attr, value);
      });
      return elem;
    },
    svgRoot () { return svgroot; },
    svgContent () { return svgcontent; },
    getDataStorage () { return dataStorage; }
  };

  /**
   * Potentially reusable test set-up.
   * @returns {void}
   */
  beforeEach(() => {
    svgroot = mockFactory.createSVGElement({
      element: 'svg',
      attr: { id: 'svgroot' }
    });
    svgcontent = mockFactory.createSVGElement({
      element: 'svg',
      attr: { id: 'svgcontent' }
    });

    svgroot.append(svgcontent);
    /* const rect = */ svgcontent.append(
      mockFactory.createSVGElement({
        element: 'rect',
        attr: {
          id: 'rect',
          x: '50',
          y: '75',
          width: '200',
          height: '100'
        }
      })
    );
    sandbox.append(svgroot);
  });

  /*
  function setUpWithInit () {
    select.init(mockConfig, mockFactory);
  }
  */

  /**
   * Tear down the test by emptying our sandbox area.
   * @returns {void}
   */
  afterEach(() => {
    while (sandbox.hasChildNodes()) {
      sandbox.firstChild.remove();
    }
  });

  it('Test svgedit.select package', function () {
    assert.ok(select);
    assert.ok(select.Selector);
    assert.ok(select.SelectorManager);
    assert.ok(select.init);
    assert.ok(select.getSelectorManager);
    assert.equal(typeof select, typeof {});
    assert.equal(typeof select.Selector, typeof function () { /* empty fn */ });
    assert.equal(typeof select.SelectorManager, typeof function () { /* empty fn */ });
    assert.equal(typeof select.init, typeof function () { /* empty fn */ });
    assert.equal(typeof select.getSelectorManager, typeof function () { /* empty fn */ });
  });

  it('Test Selector DOM structure', function () {
    assert.ok(svgroot);
    assert.ok(svgroot.hasChildNodes());

    // Verify non-existence of Selector DOM nodes
    assert.equal(svgroot.childNodes.length, 1);
    assert.equal(svgroot.childNodes.item(0), svgcontent);
    assert.ok(!svgroot.querySelector('#selectorParentGroup'));

    select.init(mockConfig, mockFactory);

    assert.equal(svgroot.childNodes.length, 3);

    // Verify existence of canvas background.
    const cb = svgroot.childNodes.item(0);
    assert.ok(cb);
    assert.equal(cb.id, 'canvasBackground');

    assert.ok(svgroot.childNodes.item(1));
    assert.equal(svgroot.childNodes.item(1), svgcontent);

    // Verify existence of selectorParentGroup.
    const spg = svgroot.childNodes.item(2);
    assert.ok(spg);
    assert.equal(svgroot.querySelector('#selectorParentGroup'), spg);
    assert.equal(spg.id, 'selectorParentGroup');
    assert.equal(spg.tagName, 'g');

    // Verify existence of all grip elements.
    assert.ok(spg.querySelector('#selectorGrip_resize_nw'));
    assert.ok(spg.querySelector('#selectorGrip_resize_n'));
    assert.ok(spg.querySelector('#selectorGrip_resize_ne'));
    assert.ok(spg.querySelector('#selectorGrip_resize_e'));
    assert.ok(spg.querySelector('#selectorGrip_resize_se'));
    assert.ok(spg.querySelector('#selectorGrip_resize_s'));
    assert.ok(spg.querySelector('#selectorGrip_resize_sw'));
    assert.ok(spg.querySelector('#selectorGrip_resize_w'));
    assert.ok(spg.querySelector('#selectorGrip_rotateconnector'));
    assert.ok(spg.querySelector('#selectorGrip_rotate'));
  });
});