import { CallbackDataParams } from 'echarts/types/src/util/types';
import { LegendOrientation } from './types';
import { TOOLTIP_POINTER_MARGIN, TOOLTIP_OVERFLOW_MARGIN } from './constants';

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
export const defaultGrid = {
  containLabel: true,
};

export const defaultTooltip = {
  position: (
    canvasMousePos: [number, number],
    params: CallbackDataParams,
    tooltipDom: HTMLElement,
    rect: any,
    sizes: { contentSize: [number, number]; viewSize: [number, number] },
  ) => {
    // algorithm copy-pasted from here:
    // https://github.com/apache/echarts/issues/5004#issuecomment-559668309

    // The chart canvas position
    const canvasRect = tooltipDom.parentElement
      ?.getElementsByTagName('canvas')[0]
      .getBoundingClientRect();

    // The mouse coordinates relative to the whole window
    // The first parameter to the position function is the mouse position relative to the canvas
    const mouseX = canvasMousePos[0] + (canvasRect?.x || 0);
    const mouseY = canvasMousePos[1] + (canvasRect?.y || 0);

    // The width and height of the tooltip dom element
    const tooltipWidth = sizes.contentSize[0];
    const tooltipHeight = sizes.contentSize[1];

    // Start by placing the tooltip top and right relative to the mouse position
    let xPos = mouseX + TOOLTIP_POINTER_MARGIN;
    let yPos = mouseY - TOOLTIP_POINTER_MARGIN - tooltipHeight;

    // The tooltip is overflowing past the right edge of the window
    if (xPos + tooltipWidth >= document.documentElement.clientWidth) {
      // Attempt to place the tooltip to the left of the mouse position
      xPos = mouseX - TOOLTIP_POINTER_MARGIN - tooltipWidth;

      // The tooltip is overflowing past the left edge of the window
      if (xPos <= 0)
        // Place the tooltip a fixed distance from the left edge of the window
        xPos = TOOLTIP_OVERFLOW_MARGIN;
    }

    // The tooltip is overflowing past the top edge of the window
    if (yPos <= 0) {
      // Attempt to place the tooltip to the bottom of the mouse position
      yPos = mouseY + TOOLTIP_POINTER_MARGIN;

      // The tooltip is overflowing past the bottom edge of the window
      if (yPos + tooltipHeight >= document.documentElement.clientHeight)
        // Place the tooltip a fixed distance from the top edge of the window
        yPos = TOOLTIP_OVERFLOW_MARGIN;
    }

    // Return the position (converted back to a relative position on the canvas)
    return [xPos - (canvasRect?.x || 0), yPos - (canvasRect?.y || 0)];
  },
};

export const defaultYAxis = {
  scale: true,
};

export const defaultLegendPadding = {
  [LegendOrientation.Top]: 20,
  [LegendOrientation.Bottom]: 20,
  [LegendOrientation.Left]: 170,
  [LegendOrientation.Right]: 170,
};