/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

import {
  sharedTestSetup,
  sharedTestTeardown,
} from './test_helpers/setup_teardown.js';

suite('WidgetDiv', function () {
  setup(function () {
    sharedTestSetup.call(this);
  });
  teardown(function () {
    sharedTestTeardown.call(this);
  });

  suite('positionWithAnchor', function () {
    function makeBBox(left, top, width, height) {
      return {
        left: left,
        right: left + width,
        top: top,
        bottom: top + height,
        width: width,
        height: height,
      };
    }

    setup(function () {
      Blockly.WidgetDiv.createDom();
      this.viewportBBox = makeBBox(0, 0, 1000, 1003);
      this.widgetSize = {
        width: 100,
        height: 102,
      };
      this.anchorSize = {
        width: 90,
        height: 91,
      };

      this.testWidgetPosition = function (
        anchorBBox,
        rtl,
        expectedX,
        expectedY,
        expectedHeight,
      ) {
        Blockly.WidgetDiv.positionWithAnchor(
          this.viewportBBox,
          anchorBBox,
          this.widgetSize,
          rtl,
        );
        const style = Blockly.WidgetDiv.getDiv().style;
        chai.assert.equal(style.left, expectedX + 'px', 'Left');
        chai.assert.equal(style.top, expectedY + 'px', 'Top');
        chai.assert.equal(style.height, expectedHeight + 'px', 'Height');
      };
    });

    suite('LTR', function () {
      test('noConflict', function () {
        // Anchor placed in the middle.
        const anchorBBox = makeBBox(
          500,
          500,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed just below at the left side of the
        // anchor.
        const expectedX = anchorBBox.left;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          false,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('topConflict', function () {
        // Anchor close to the top.
        const anchorBBox = makeBBox(
          500,
          50,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed just below the anchor.
        const expectedX = anchorBBox.left;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          false,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('bottomConflict', function () {
        // Anchor placed close to the bottom.
        const anchorBBox = makeBBox(
          500,
          900,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed just above the anchor.
        const expectedX = anchorBBox.left;
        const expectedY = anchorBBox.top - this.widgetSize.height;
        this.testWidgetPosition(
          anchorBBox,
          false,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('leftConflict', function () {
        // Anchor placed close to the left side.
        const anchorBBox = makeBBox(
          50,
          500,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed at the anchor.
        const expectedX = anchorBBox.left;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          false,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('rightConflict', function () {
        // Anchor placed close to the right side.
        const anchorBBox = makeBBox(
          950,
          500,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed as far right as possible--at the edge of
        // the screen.
        const expectedX = this.viewportBBox.width - this.widgetSize.width;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          false,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });
    });
    suite('RTL', function () {
      test('noConflict', function () {
        // Anchor placed in the middle
        const anchorBBox = makeBBox(
          500,
          500,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed at the right side of the anchor.
        const expectedX = anchorBBox.right - this.widgetSize.width;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          true,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('topConflict', function () {
        // Anchor close to the top.
        const anchorBBox = makeBBox(
          500,
          50,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed just below the anchor.
        const expectedX = anchorBBox.right - this.widgetSize.width;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          true,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('bottomConflict', function () {
        // Anchor placed close to the bottom.
        const anchorBBox = makeBBox(
          500,
          900,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed just above the anchor.
        const expectedX = anchorBBox.right - this.widgetSize.width;
        const expectedY = anchorBBox.top - this.widgetSize.height;
        this.testWidgetPosition(
          anchorBBox,
          true,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('leftConflict', function () {
        // Anchor placed close to the left side.
        const anchorBBox = makeBBox(
          10,
          500,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed as far left as possible--at the edge of
        // the screen.
        const expectedX = 0;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          true,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });

      test('rightConflict', function () {
        // Anchor placed close to the right side.
        const anchorBBox = makeBBox(
          950,
          500,
          this.anchorSize.width,
          this.anchorSize.height,
        );
        // The widget div should be placed as far right as possible--at the edge of
        // the screen.
        const expectedX = this.viewportBBox.width - this.widgetSize.width;
        const expectedY = anchorBBox.top + this.anchorSize.height;
        this.testWidgetPosition(
          anchorBBox,
          true,
          expectedX,
          expectedY,
          this.widgetSize.height,
        );
      });
    });
  });
});