/* *
 * Highcharts variwide module
 *
 * (c) 2010-2019 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */

'use strict';

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

import U from '../parts/Utilities.js';
var isNumber = U.isNumber;

import '../parts/AreaSeries.js';

var addEvent = H.addEvent,
    seriesType = H.seriesType,
    seriesTypes = H.seriesTypes,
    pick = H.pick;

/**
 * @private
 * @class
 * @name Highcharts.seriesTypes.variwide
 *
 * @augments Highcharts.Series
 */
seriesType('variwide', 'column'

    /**
     * A variwide chart (related to marimekko chart) is a column chart with a
     * variable width expressing a third dimension.
     *
     * @sample {highcharts} highcharts/demo/variwide/
     *         Variwide chart
     * @sample {highcharts} highcharts/series-variwide/inverted/
     *         Inverted variwide chart
     * @sample {highcharts} highcharts/series-variwide/datetime/
     *         Variwide columns on a datetime axis
     *
     * @extends      plotOptions.column
     * @since        6.0.0
     * @product      highcharts
     * @excluding    boostThreshold, crisp, depth, edgeColor, edgeWidth,
     *               groupZPadding
     * @optionparent plotOptions.variwide
     */
    , {
        /**
         * In a variwide chart, the point padding is 0 in order to express the
         * horizontal stacking of items.
         */
        pointPadding: 0,
        /**
         * In a variwide chart, the group padding is 0 in order to express the
         * horizontal stacking of items.
         */
        groupPadding: 0
    }, {
        irregularWidths: true,
        pointArrayMap: ['y', 'z'],
        parallelArrays: ['x', 'y', 'z'],
        processData: function (force) {
            this.totalZ = 0;
            this.relZ = [];
            seriesTypes.column.prototype.processData.call(this, force);

            (this.xAxis.reversed ?
                this.zData.slice().reverse() :
                this.zData).forEach(
                function (z, i) {
                    this.relZ[i] = this.totalZ;
                    this.totalZ += z;
                },
                this
            );

            if (this.xAxis.categories) {
                this.xAxis.variwide = true;
                this.xAxis.zData = this.zData; // Used for label rank
            }
        },

        /**
         * Translate an x value inside a given category index into the distorted
         * axis translation.
         *
         * @private
         * @function Highcharts.Series#postTranslate
         *
         * @param {number} index
         *        The category index
         *
         * @param {number} x
         *        The X pixel position in undistorted axis pixels
         *
         * @return {number}
         *         Distorted X position
         */
        postTranslate: function (index, x, point) {

            var axis = this.xAxis,
                relZ = this.relZ,
                i = axis.reversed ? relZ.length - index : index,
                goRight = axis.reversed ? -1 : 1,
                len = axis.len,
                totalZ = this.totalZ,
                linearSlotLeft = i / relZ.length * len,
                linearSlotRight = (i + goRight) / relZ.length * len,
                slotLeft = (pick(relZ[i], totalZ) / totalZ) * len,
                slotRight = (pick(relZ[i + goRight], totalZ) / totalZ) * len,
                xInsideLinearSlot = x - linearSlotLeft,
                ret;

            // Set crosshairWidth for every point (#8173)
            if (point) {
                point.crosshairWidth = slotRight - slotLeft;
            }

            ret = slotLeft +
            xInsideLinearSlot * (slotRight - slotLeft) /
            (linearSlotRight - linearSlotLeft);

            return ret;
        },

        // Extend translation by distoring X position based on Z.
        translate: function () {

            // Temporarily disable crisping when computing original shapeArgs
            var crispOption = this.options.crisp,
                xAxis = this.xAxis;

            this.options.crisp = false;

            seriesTypes.column.prototype.translate.call(this);

            // Reset option
            this.options.crisp = crispOption;

            var inverted = this.chart.inverted,
                crisp = this.borderWidth % 2 / 2;

            // Distort the points to reflect z dimension
            this.points.forEach(function (point, i) {
                var left, right;

                if (xAxis.variwide) {
                    left = this.postTranslate(
                        i,
                        point.shapeArgs.x,
                        point
                    );

                    right = this.postTranslate(
                        i,
                        point.shapeArgs.x + point.shapeArgs.width
                    );

                    // For linear or datetime axes, the variwide column should
                    // start with X and extend Z units, without modifying the
                    // axis.
                } else {
                    left = point.plotX;
                    right = xAxis.translate(
                        point.x + point.z,
                        0,
                        0,
                        0,
                        1
                    );
                }

                if (this.options.crisp) {
                    left = Math.round(left) - crisp;
                    right = Math.round(right) - crisp;
                }

                point.shapeArgs.x = left;
                point.shapeArgs.width = right - left;

                // Crosshair position (#8083)
                point.plotX = (left + right) / 2;

                // Adjust the tooltip position
                if (!inverted) {
                    point.tooltipPos[0] =
                    point.shapeArgs.x + point.shapeArgs.width / 2;
                } else {
                    point.tooltipPos[1] =
                    xAxis.len - point.shapeArgs.x - point.shapeArgs.width / 2;
                }
            }, this);

            if (this.options.stacking) {
                this.correctStackLabels();
            }
        },

        // Function that corrects stack labels positions
        correctStackLabels: function () {
            var series = this,
                options = series.options,
                yAxis = series.yAxis,
                pointStack,
                pointWidth,
                stack,
                xValue;

            series.points.forEach(function (point) {
                xValue = point.x;
                pointWidth = point.shapeArgs.width;
                stack = yAxis.stacks[(series.negStacks &&
                    point.y <
                        (options.startFromThreshold ? 0 : options.threshold) ?
                    '-' :
                    '') + series.stackKey];
                pointStack = stack[xValue];

                if (stack && pointStack && !point.isNull) {
                    pointStack.setOffset(
                        -(pointWidth / 2) || 0,
                        pointWidth || 0,
                        undefined,
                        undefined,
                        point.plotX
                    );
                }
            });
        }

        // Point functions
    }, {
        isValid: function () {
            return isNumber(this.y) && isNumber(this.z);
        }
    });

H.Tick.prototype.postTranslate = function (xy, xOrY, index) {
    var axis = this.axis,
        pos = xy[xOrY] - axis.pos;

    if (!axis.horiz) {
        pos = axis.len - pos;
    }
    pos = axis.series[0].postTranslate(index, pos);

    if (!axis.horiz) {
        pos = axis.len - pos;
    }
    xy[xOrY] = axis.pos + pos;
};

// Same width as the category (#8083)
addEvent(H.Axis, 'afterDrawCrosshair', function (e) {
    if (this.variwide && this.cross) {
        this.cross.attr('stroke-width', e.point && e.point.crosshairWidth);
    }
});

// On a vertical axis, apply anti-collision logic to the labels.
addEvent(H.Axis, 'afterRender', function () {
    var axis = this;

    if (!this.horiz && this.variwide) {
        this.chart.labelCollectors.push(function () {
            return axis.tickPositions.map(function (pos, i) {
                var label = axis.ticks[pos].label;

                label.labelrank = axis.zData[i];
                return label;
            });
        });
    }
});

addEvent(H.Tick, 'afterGetPosition', function (e) {
    var axis = this.axis,
        xOrY = axis.horiz ? 'x' : 'y';

    if (axis.variwide) {
        this[xOrY + 'Orig'] = e.pos[xOrY];
        this.postTranslate(e.pos, xOrY, this.pos);
    }
});

H.wrap(H.Tick.prototype, 'getLabelPosition', function (
    proceed,
    x,
    y,
    label,
    horiz,
    labelOptions,
    tickmarkOffset,
    index
) {
    var args = Array.prototype.slice.call(arguments, 1),
        xy,
        xOrY = horiz ? 'x' : 'y';

    // Replace the x with the original x
    if (this.axis.variwide && typeof this[xOrY + 'Orig'] === 'number') {
        args[horiz ? 0 : 1] = this[xOrY + 'Orig'];
    }

    xy = proceed.apply(this, args);

    // Post-translate
    if (this.axis.variwide && this.axis.categories) {
        this.postTranslate(xy, xOrY, index);
    }
    return xy;
});


/**
 * A `variwide` series. If the [type](#series.variwide.type) option is not
 * specified, it is inherited from [chart.type](#chart.type).
 *
 * @extends   series,plotOptions.variwide
 * @product   highcharts
 * @apioption series.variwide
 */

/**
 * An array of data points for the series. For the `variwide` series type,
 * points can be given in the following ways:
 *
 * 1. An array of arrays with 3 or 2 values. In this case, the values correspond
 *    to `x,y,z`. 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 2. 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, 1, 2],
 *           [1, 5, 5],
 *           [2, 0, 2]
 *       ]
 *    ```
 *
 * 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.variwide.turboThreshold), this option is not
 *    available.
 *    ```js
 *       data: [{
 *           x: 1,
 *           y: 1,
 *           z: 1,
 *           name: "Point2",
 *           color: "#00FF00"
 *       }, {
 *           x: 1,
 *           y: 5,
 *           z: 4,
 *           name: "Point1",
 *           color: "#FF00FF"
 *       }]
 *    ```
 *
 * @sample {highcharts} highcharts/series/data-array-of-arrays/
 *         Arrays of numeric x and y
 * @sample {highcharts} highcharts/series/data-array-of-arrays-datetime/
 *         Arrays of datetime x and y
 * @sample {highcharts} highcharts/series/data-array-of-name-value/
 *         Arrays of point.name and y
 * @sample {highcharts} highcharts/series/data-array-of-objects/
 *         Config objects
 *
 * @type      {Array<Array<(number|string),number>|Array<(number|string),number,number>|*>}
 * @extends   series.line.data
 * @excluding marker
 * @product   highcharts
 * @apioption series.variwide.data
 */

/**
 * The relative width for each column. On a category axis, the widths are
 * distributed so they sum up to the X axis length. On linear and datetime axes,
 * the columns will be laid out from the X value and Z units along the axis.
 *
 * @type      {number}
 * @product   highcharts
 * @apioption series.variwide.data.z
 */