import React, { Component } from "react";
import { Group } from '@visx/group';
import { GlyphCircle } from '@visx/glyph';
import { scaleLinear, scaleTime, scaleOrdinal } from '@visx/scale';
import { timeParse, timeFormat } from 'd3-time-format';
import { AxisBottom, AxisLeft } from '@visx/axis';
import { Loader } from "semantic-ui-react";
import { LegendOrdinal} from '@visx/legend';
class ErrorChart extends Component {
  constructor(props) {
    super(props);
  }

  render() {
    var errorData = this.props.data;
    if (!errorData) {
      return (
        <Loader size='large'>Loading</Loader>
      )
    }
    var data = [];
    const parseDate = timeParse("%Y%m%d");
    const format = timeFormat("%b %d");
    const formatDate = (date) => format(parseDate(date));

    // Define the graph dimensions and margins
    const width = this.props.width;
    const height = 500;
    const margin = { top: 20, bottom: 40, left: 40, right: 20 };

    // Then we'll create some bounds
    const xMax = width - margin.left - margin.right;
    const yMax = height - margin.top - margin.bottom;

    // accessors
    const x = d => d.x;
    const y = d => d.y;



    // Compose together the scale and accessor functions to get point functions
    const dotColor = n => {
      var colores_g = ["#3366cc", "#dc3912", "#ff9900", "#109618", "#990099", "#0099c6", "#dd4477", "#66aa00", "#b82e2e", "#316395", "#994499", "#22aa99", "#aaaa11", "#6633cc", "#e67300", "#8b0707", "#651067", "#329262", "#5574a6", "#3b3eac"];
      return colores_g[n % colores_g.length];
    }

    const compose = (scale, accessor) => (data) => scale(accessor(data));
    var zScale = scaleOrdinal({
      domain: errorData.legend,
      range: ["#3366cc", "#dc3912", "#ff9900", "#109618", "#990099", "#0099c6", "#dd4477", "#66aa00", "#b82e2e", "#316395", "#994499", "#22aa99", "#aaaa11", "#6633cc", "#e67300", "#8b0707", "#651067", "#329262", "#5574a6", "#3b3eac"]
    });
    var xScale, yScale, xPoint, yPoint;
    if (errorData) {
      // We'll use some mock data from `@vx/mock-data` for this.
      data = errorData.data;
      // scales
      xScale = scaleTime({
        range: [0, xMax],
        domain: [errorData.minDate, errorData.maxDate],
        tickFormat: () => (val) => formatDate(val)
      });
      yScale = scaleLinear({
        range: [yMax, 0],
        domain: [0, errorData.maxValue],
      });
      zScale = scaleOrdinal({
        domain: errorData.legend,
        range: ["#3366cc", "#dc3912", "#ff9900", "#109618", "#990099", "#0099c6", "#dd4477", "#66aa00", "#b82e2e", "#316395", "#994499", "#22aa99", "#aaaa11", "#6633cc", "#e67300", "#8b0707", "#651067", "#329262", "#5574a6", "#3b3eac"]
      });
      xPoint = compose(xScale, x);
      yPoint = compose(yScale, y);

    }

    return (
      <div style={{
        width: 900
      }}>
        <svg width={width} height={height} style={{
          float: "left"
        }}>
          <Group left={margin.left} top={margin.top} >
            <AxisBottom top={yMax} scale={xScale} numTicks={width > 520 ? 10 : 5} />
            <AxisLeft scale={yScale} />
            {data.map((band, i) => {
              return (
                <Group key={`band-${i}`}>
                  {band.data.map((point, j) => {
                    return (
                      <GlyphCircle
                        className="dot"
                        key={`point-${point.x}-${j}`}
                        fill={dotColor(i)}
                        left={xScale(x(point))}
                        top={yScale(y(point))}
                        size={6.0}
                      />
                    );
                  })}
                </Group>
              );
            })}
          </Group>
        </svg>
        <div
          style={{
            float: "right"
          }}
        >
          <LegendOrdinal
            scale={zScale}
            labelMargin="0 15px 0 0"
            onMouseOver={data => event => {
              console.log(
                `mouse over: ${data.text}`,
                `index: ${data.index}`,
              );
            }}
          />
        </div>
      </div>



    );
  }


}
export default ErrorChart;