import type {AxisPointerComponentOption, ECharts, LineSeriesOption} from 'echarts';
import type ReactEchartsCore from 'echarts-for-react/lib/core';

export type SeriesDataUnit = {
  name: string | number;
  value: number;
  itemStyle?: {
    color?: string;
  };
  // number because we sometimes use timestamps
  onClick?: (series: Series, instance: ECharts) => void;
};

export type Series = {
  data: SeriesDataUnit[];
  seriesName: string;
  areaStyle?: {
    color: string;
    opacity: number;
  };
  color?: string;
  id?: string;
  lineStyle?: AxisPointerComponentOption['lineStyle'];
  // https://echarts.apache.org/en/option.html#series-line.z
  markLine?: LineSeriesOption['markLine'];
  stack?: string;
  // https://echarts.apache.org/en/option.html#series-line.stack
  z?: number;
};

export type ReactEchartsRef = ReactEchartsCore & {
  getEchartsInstance: () => ECharts;
};

export type EChartEventHandler<P> = (params: P, instance: ECharts) => void;

export type EChartChartReadyHandler = (instance: ECharts) => void;

export type EChartHighlightHandler = EChartEventHandler<any>;

/**
 * XXX: These are incomplete types and can also vary depending on the component type
 *
 * Taken from https://echarts.apache.org/en/api.html#events.Mouse%20events
 */
interface EChartMouseEventParam {
  // color of component (make sense when componentType is 'series')
  color: string;
  // type of the component to which the clicked glyph belongs
  // i.e., 'series', 'markLine', 'markPoint', 'timeLine'
  componentType: string;
  // incoming raw data item
  data: Record<string, any>;
  // data index in incoming data array
  dataIndex: number;
  // Some series, such as sankey or graph, maintains more than
  // one types of data (nodeData and edgeData), which can be
  // distinguished from each other by dataType with its value
  // 'node' and 'edge'.
  // On the other hand, most series has only one type of data,
  // where dataType is not needed.
  dataType: string;
  // data name, category name
  name: string;

  seriesId: string;
  // series index in incoming option.series (make sense when componentType is 'series')
  seriesIndex: number;
  // series name (make sense when componentType is 'series')
  seriesName: string;
  // series type (make sense when componentType is 'series')
  // i.e., 'line', 'bar', 'pie'
  seriesType: string;
  // incoming data value
  value: number | number[];
}

export type EChartMouseOutHandler = EChartEventHandler<EChartMouseEventParam>;

export type EChartMouseOverHandler = EChartEventHandler<EChartMouseEventParam>;

export type EChartClickHandler = EChartEventHandler<EChartMouseEventParam>;

export type EChartDataZoomHandler = EChartEventHandler<{
  /**
   * percentage of zoom finish position, 0 - 100
   */
  end: number;
  /**
   * percentage of zoom start position, 0 - 100
   */
  start: number;
  type: 'datazoom';
  /**
   * data value of zoom finish position; only exists in zoom event of
   * triggered by toolbar
   */
  endValue?: number;
  /**
   * data value of zoom start position; only exists in zoom event of
   * triggered by toolbar
   */
  startValue?: number;
}>;

export type DataPoint = Pick<SeriesDataUnit, 'name' | 'value'>;

export type EChartRestoreHandler = EChartEventHandler<{type: 'restore'}>;

export type EChartFinishedHandler = EChartEventHandler<{}>;

export type EChartRenderedHandler = EChartEventHandler<{}>;