/* *
 * (c) 2010-2018 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */

'use strict';

import H from './Globals.js';
import './Utilities.js';

var defaultPlotOptions = H.defaultPlotOptions,
    merge = H.merge,
    seriesType = H.seriesType,
    seriesTypes = H.seriesTypes;

/**
 * A candlestick chart is a style of financial chart used to describe price
 * movements over time.
 *
 * @sample stock/demo/candlestick/
 *         Candlestick chart
 *
 * @extends      plotOptions.ohlc
 * @excluding    borderColor,borderRadius,borderWidth
 * @product      highstock
 * @optionparent plotOptions.candlestick
 */
var candlestickOptions = {

    /**
     * The specific line color for up candle sticks. The default is to inherit
     * the general `lineColor` setting.
     *
     * @sample {highstock} stock/plotoptions/candlestick-linecolor/
     *         Candlestick line colors
     *
     * @type      {Highcharts.ColorString}
     * @since     1.3.6
     * @product   highstock
     * @apioption plotOptions.candlestick.upLineColor
     */

    /**
     * @type      {string|Function}
     * @default   ohlc
     * @product   highstock
     * @apioption plotOptions.candlestick.dataGrouping.approximation
     */

    states: {

        /**
         * @extends plotOptions.column.states.hover
         * @product highstock
         */
        hover: {

            /**
             * The pixel width of the line/border around the candlestick.
             *
             * @product highstock
             */
            lineWidth: 2
        }
    },

    /**
     * @extends plotOptions.ohlc.tooltip
     */
    tooltip: defaultPlotOptions.ohlc.tooltip,

    /**
     * @type    {number|null}
     * @product highstock
     */
    threshold: null,

    /**
     * The color of the line/border of the candlestick.
     *
     * In styled mode, the line stroke can be set with the
     * `.highcharts-candlestick-series .highcahrts-point` rule.
     *
     * @see [upLineColor](#plotOptions.candlestick.upLineColor)
     *
     * @sample {highstock} stock/plotoptions/candlestick-linecolor/
     *         Candlestick line colors
     *
     * @type    {Highcharts.ColorString}
     * @default #000000
     * @product highstock
     */
    lineColor: '#000000',

    /**
     * The pixel width of the candlestick line/border. Defaults to `1`.
     *
     *
     * In styled mode, the line stroke width can be set with the
     * `.highcharts-candlestick-series .highcahrts-point` rule.
     *
     * @product highstock
     */
    lineWidth: 1,

    /**
     * The fill color of the candlestick when values are rising.
     *
     * In styled mode, the up color can be set with the
     * `.highcharts-candlestick-series .highcharts-point-up` rule.
     *
     * @sample {highstock} stock/plotoptions/candlestick-color/
     *         Custom colors
     * @sample {highstock} highcharts/css/candlestick/
     *         Colors in styled mode
     *
     * @type    {Highcharts.ColorString}
     * @default #ffffff
     * @product highstock
     */
    upColor: '#ffffff',

    /**
     * @product highstock
     */
    stickyTracking: true

};

/**
 * The candlestick series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.candlestick
 *
 * @augments Highcharts.seriesTypes.ohlc
 */
seriesType('candlestick', 'ohlc', merge(
    defaultPlotOptions.column,
    candlestickOptions
), /** @lends seriesTypes.candlestick */ {

    /**
     * Postprocess mapping between options and SVG attributes
     *
     * @private
     * @function Highcharts.seriesTypes.candlestick#pointAttribs
     *
     * @param {Highcharts.Point} point
     *
     * @param {string} [state]
     *
     * @return {Highcharts.SVGAttributes}
     */
    pointAttribs: function (point, state) {
        var attribs = seriesTypes.column.prototype.pointAttribs.call(
                this,
                point,
                state
            ),
            options = this.options,
            isUp = point.open < point.close,
            stroke = options.lineColor || this.color,
            stateOptions;

        attribs['stroke-width'] = options.lineWidth;

        attribs.fill = point.options.color ||
            (isUp ? (options.upColor || this.color) : this.color);
        attribs.stroke = point.lineColor ||
            (isUp ? (options.upLineColor || stroke) : stroke);

        // Select or hover states
        if (state) {
            stateOptions = options.states[state];
            attribs.fill = stateOptions.color || attribs.fill;
            attribs.stroke = stateOptions.lineColor || attribs.stroke;
            attribs['stroke-width'] =
                stateOptions.lineWidth || attribs['stroke-width'];
        }


        return attribs;
    },

    /**
     * Draw the data points.
     *
     * @private
     * @function Highcharts.seriesTypes.candlestick#drawPoints
     */
    drawPoints: function () {
        var series = this,
            points = series.points,
            chart = series.chart,
            reversedYAxis = series.yAxis.reversed;


        points.forEach(function (point) {

            var graphic = point.graphic,
                plotOpen,
                plotClose,
                topBox,
                bottomBox,
                hasTopWhisker,
                hasBottomWhisker,
                crispCorr,
                crispX,
                path,
                halfWidth,
                isNew = !graphic;

            if (point.plotY !== undefined) {

                if (!graphic) {
                    point.graphic = graphic = chart.renderer.path()
                        .add(series.group);
                }

                if (!series.chart.styledMode) {
                    graphic
                        .attr(
                            series.pointAttribs(
                                point,
                                point.selected && 'select'
                            )
                        ) // #3897
                        .shadow(series.options.shadow);
                }

                // Crisp vector coordinates
                crispCorr = (graphic.strokeWidth() % 2) / 2;
                crispX = Math.round(point.plotX) - crispCorr; // #2596
                plotOpen = point.plotOpen;
                plotClose = point.plotClose;
                topBox = Math.min(plotOpen, plotClose);
                bottomBox = Math.max(plotOpen, plotClose);
                halfWidth = Math.round(point.shapeArgs.width / 2);
                hasTopWhisker = reversedYAxis ?
                    bottomBox !== point.yBottom :
                    Math.round(topBox) !== Math.round(point.plotHigh);
                hasBottomWhisker = reversedYAxis ?
                    Math.round(topBox) !== Math.round(point.plotHigh) :
                    bottomBox !== point.yBottom;
                topBox = Math.round(topBox) + crispCorr;
                bottomBox = Math.round(bottomBox) + crispCorr;

                // Create the path. Due to a bug in Chrome 49, the path is first
                // instanciated with no values, then the values pushed. For
                // unknown reasons, instanciating the path array with all the
                // values would lead to a crash when updating frequently
                // (#5193).
                path = [];
                path.push(
                    'M',
                    crispX - halfWidth, bottomBox,
                    'L',
                    crispX - halfWidth, topBox,
                    'L',
                    crispX + halfWidth, topBox,
                    'L',
                    crispX + halfWidth, bottomBox,
                    'Z', // Ensure a nice rectangle #2602
                    'M',
                    crispX, topBox,
                    'L',
                    // #460, #2094
                    crispX, hasTopWhisker ?
                        Math.round(
                            reversedYAxis ? point.yBottom : point.plotHigh
                        ) :
                        topBox,
                    'M',
                    crispX, bottomBox,
                    'L',
                    // #460, #2094
                    crispX, hasBottomWhisker ?
                        Math.round(
                            reversedYAxis ? point.plotHigh : point.yBottom
                        ) :
                        bottomBox
                );

                graphic[isNew ? 'attr' : 'animate']({ d: path })
                    .addClass(point.getClassName(), true);

            }
        });
    }


});

/**
 * A `candlestick` series. If the [type](#series.candlestick.type)
 * option is not specified, it is inherited from [chart.type](
 * #chart.type).
 *
 * @type      {*}
 * @extends   series,plotOptions.candlestick
 * @excluding dataParser, dataURL
 * @product   highstock
 * @apioption series.candlestick
 */

/**
 * An array of data points for the series. For the `candlestick` series
 * type, points can be given in the following ways:
 *
 * 1. An array of arrays with 5 or 4 values. In this case, the values correspond
 *    to `x,open,high,low,close`. If the first value is a string, it is applied
 *    as the name of the point, and the `x` value is inferred. The `x` value can
 *    also be omitted, in which case the inner arrays should be of length 4.
 *    Then the `x` value is automatically calculated, either starting at 0 and
 *    incremented by 1, or from `pointStart` and `pointInterval` given in the
 *    series options.
 *    ```js
 *    data: [
 *        [0, 7, 2, 0, 4],
 *        [1, 1, 4, 2, 8],
 *        [2, 3, 3, 9, 3]
 *    ]
 *    ```
 *
 * 2. An array of objects with named values. The following snippet shows only a
 *    few settings, see the complete options set below. If the total number of
 *    data points exceeds the series'
 *    [turboThreshold](#series.candlestick.turboThreshold), this option is not
 *    available.
 *    ```js
 *    data: [{
 *        x: 1,
 *        open: 9,
 *        high: 2,
 *        low: 4,
 *        close: 6,
 *        name: "Point2",
 *        color: "#00FF00"
 *    }, {
 *        x: 1,
 *        open: 1,
 *        high: 4,
 *        low: 7,
 *        close: 7,
 *        name: "Point1",
 *        color: "#FF00FF"
 *    }]
 *    ```
 *
 * @type      {Array<Array<(number|string),number,number,number>|Array<(number|string),number,number,number,number>|*>}
 * @extends   series.ohlc.data
 * @excluding y
 * @product   highstock
 * @apioption series.candlestick.data
 */
