/**
 * @license Highcharts JS v5.0.12 (2017-05-24)
 * Exporting module
 *
 * (c) 2010-2017 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */
'use strict';
(function(factory) {
    if (typeof module === 'object' && module.exports) {
        module.exports = factory;
    } else {
        factory(Highcharts);
    }
}(function(Highcharts) {
    (function(Highcharts) {
        /**
         * Expoerimental data export module for Highcharts
         *
         * (c) 2010-2017 Torstein Honsi
         *
         * License: www.highcharts.com/license
         */

        // docs
        // - After experimental release:
        // - Move info in repo readme to docs/API.
        // - Deprecate repo and plugins page
        // - Update demos (esp accessibility) to use new URL
        // - Before official release, set up systematic tests for all series types

        /* eslint indent:0 */

        var each = Highcharts.each,
            pick = Highcharts.pick,
            win = Highcharts.win,
            doc = win.document,
            seriesTypes = Highcharts.seriesTypes,
            downloadAttrSupported = doc.createElement('a').download !== undefined;

        Highcharts.setOptions({
            lang: {
                downloadCSV: 'Download CSV',
                downloadXLS: 'Download XLS',
                viewData: 'View data table'
            }
        });

        /**
         * Get the data rows as a two dimensional array
         */
        Highcharts.Chart.prototype.getDataRows = function() {
            var options = (this.options.exporting || {}).csv || {},
                xAxis,
                xAxes = this.xAxis,
                rows = {},
                rowArr = [],
                dataRows,
                names = [],
                i,
                x,
                xTitle,
                // Options
                dateFormat = options.dateFormat || '%Y-%m-%d %H:%M:%S',
                columnHeaderFormatter = options.columnHeaderFormatter || function(item, key, keyLength) {
                    if (item instanceof Highcharts.Axis) {
                        return (item.options.title && item.options.title.text) ||
                            (item.isDatetimeAxis ? 'DateTime' : 'Category');
                    }
                    return item ?
                        item.name + (keyLength > 1 ? ' (' + key + ')' : '') :
                        'Category';
                },
                xAxisIndices = [];

            // Loop the series and index values
            i = 0;
            each(this.series, function(series) {
                var keys = series.options.keys,
                    pointArrayMap = keys || series.pointArrayMap || ['y'],
                    valueCount = pointArrayMap.length,
                    requireSorting = series.requireSorting,
                    categoryMap = {},
                    xAxisIndex = Highcharts.inArray(series.xAxis, xAxes),
                    j;

                // Map the categories for value axes
                each(pointArrayMap, function(prop) {
                    categoryMap[prop] = (series[prop + 'Axis'] && series[prop + 'Axis'].categories) || [];
                });

                if (series.options.includeInCSVExport !== false && series.visible !== false) { // #55

                    // Build a lookup for X axis index and the position of the first
                    // series that belongs to that X axis. Includes -1 for non-axis
                    // series types like pies.
                    if (!Highcharts.find(xAxisIndices, function(index) {
                            return index[0] === xAxisIndex;
                        })) {
                        xAxisIndices.push([xAxisIndex, i]);
                    }

                    // Add the column headers, usually the same as series names
                    j = 0;
                    while (j < valueCount) {
                        names.push(columnHeaderFormatter(series, pointArrayMap[j], pointArrayMap.length));
                        j++;
                    }

                    each(series.points, function(point, pIdx) {
                        var key = requireSorting ? point.x : pIdx,
                            prop,
                            val;

                        j = 0;

                        if (!rows[key]) {
                            // Generate the row
                            rows[key] = [];
                            // Contain the X values from one or more X axes
                            rows[key].xValues = [];
                        }
                        rows[key].x = point.x;
                        rows[key].xValues[xAxisIndex] = point.x;

                        // Pies, funnels, geo maps etc. use point name in X row
                        if (!series.xAxis || series.exportKey === 'name') {
                            rows[key].name = point.name;
                        }

                        while (j < valueCount) {
                            prop = pointArrayMap[j]; // y, z etc
                            val = point[prop];
                            // Pick a Y axis category if present
                            rows[key][i + j] = pick(categoryMap[prop][val], val);
                            j++;
                        }

                    });
                    i = i + j;
                }
            });

            // Make a sortable array
            for (x in rows) {
                if (rows.hasOwnProperty(x)) {
                    rowArr.push(rows[x]);
                }
            }

            var xAxisIndex, column;
            dataRows = [names];

            i = xAxisIndices.length;
            while (i--) { // Start from end to splice in
                xAxisIndex = xAxisIndices[i][0];
                column = xAxisIndices[i][1];
                xAxis = xAxes[xAxisIndex];

                // Sort it by X values
                rowArr.sort(function(a, b) { // eslint-disable-line no-loop-func
                    return a.xValues[xAxisIndex] - b.xValues[xAxisIndex];
                });

                // Add header row
                xTitle = columnHeaderFormatter(xAxis);
                //dataRows = [[xTitle].concat(names)];
                dataRows[0].splice(column, 0, xTitle);

                // Add the category column
                each(rowArr, function(row) { // eslint-disable-line no-loop-func
                    var category = row.name;
                    if (!category) {
                        if (xAxis.isDatetimeAxis) {
                            if (row.x instanceof Date) {
                                row.x = row.x.getTime();
                            }
                            category = Highcharts.dateFormat(dateFormat, row.x);
                        } else if (xAxis.categories) {
                            category = pick(
                                xAxis.names[row.x],
                                xAxis.categories[row.x],
                                row.x
                            );
                        } else {
                            category = row.x;
                        }
                    }

                    // Add the X/date/category
                    row.splice(column, 0, category);
                });
            }
            dataRows = dataRows.concat(rowArr);

            return dataRows;
        };

        /**
         * Get a CSV string
         */
        Highcharts.Chart.prototype.getCSV = function(useLocalDecimalPoint) {
            var csv = '',
                rows = this.getDataRows(),
                options = (this.options.exporting || {}).csv || {},
                itemDelimiter = options.itemDelimiter || ',', // use ';' for direct to Excel
                lineDelimiter = options.lineDelimiter || '\n'; // '\n' isn't working with the js csv data extraction

            // Transform the rows to CSV
            each(rows, function(row, i) {
                var val = '',
                    j = row.length,
                    n = useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.';
                while (j--) {
                    val = row[j];
                    if (typeof val === 'string') {
                        val = '"' + val + '"';
                    }
                    if (typeof val === 'number') {
                        if (n === ',') {
                            val = val.toString().replace('.', ',');
                        }
                    }
                    row[j] = val;
                }
                // Add the values
                csv += row.join(itemDelimiter);

                // Add the line delimiter
                if (i < rows.length - 1) {
                    csv += lineDelimiter;
                }
            });
            return csv;
        };

        /**
         * Build a HTML table with the data
         */
        Highcharts.Chart.prototype.getTable = function(useLocalDecimalPoint) {
            var html = '<table><thead>',
                rows = this.getDataRows();

            // Transform the rows to HTML
            each(rows, function(row, i) {
                var tag = i ? 'td' : 'th',
                    val,
                    j,
                    n = useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.';

                html += '<tr>';
                for (j = 0; j < row.length; j = j + 1) {
                    val = row[j];
                    // Add the cell
                    if (typeof val === 'number') {
                        val = val.toString();
                        if (n === ',') {
                            val = val.replace('.', n);
                        }
                        html += '<' + tag + ' class="number">' + val + '</' + tag + '>';

                    } else {
                        html += '<' + tag + '>' + (val === undefined ? '' : val) + '</' + tag + '>';
                    }
                }

                html += '</tr>';

                // After the first row, end head and start body
                if (!i) {
                    html += '</thead><tbody>';
                }

            });
            html += '</tbody></table>';

            return html;
        };

        Highcharts.Chart.prototype.fileDownload = function(href, extension, content, MIME) {
            var a,
                blobObject,
                name,
                options = (this.options.exporting || {}).csv || {},
                url = options.url || 'http://www.highcharts.com/studies/csv-export/download.php';

            if (this.options.exporting.filename) {
                name = this.options.exporting.filename;
            } else if (this.title) {
                name = this.title.textStr.replace(/ /g, '-').toLowerCase();
            } else {
                name = 'chart';
            }

            // MS specific. Check this first because of bug with Edge (#76)
            if (win.Blob && win.navigator.msSaveOrOpenBlob) {
                // Falls to msSaveOrOpenBlob if download attribute is not supported
                blobObject = new win.Blob([content]);
                win.navigator.msSaveOrOpenBlob(blobObject, name + '.' + extension);

                // Download attribute supported
            } else if (downloadAttrSupported) {
                a = doc.createElement('a');
                a.href = href;
                a.target = '_blank';
                a.download = name + '.' + extension;
                this.container.append(a); // #111
                a.click();
                a.remove();

            } else {
                // Fall back to server side handling
                Highcharts.post(url, {
                    data: content,
                    type: MIME,
                    extension: extension
                });
            }
        };

        /**
         * Call this on click of 'Download CSV' button
         */
        Highcharts.Chart.prototype.downloadCSV = function() {
            var csv = this.getCSV(true);
            this.fileDownload(
                'data:text/csv,\uFEFF' + encodeURIComponent(csv),
                'csv',
                csv,
                'text/csv'
            );
        };

        /**
         * Call this on click of 'Download XLS' button
         */
        Highcharts.Chart.prototype.downloadXLS = function() {
            var uri = 'data:application/vnd.ms-excel;base64,',
                template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40">' +
                '<head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet>' +
                '<x:Name>Ark1</x:Name>' +
                '<x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]-->' +
                '<style>td{border:none;font-family: Calibri, sans-serif;} .number{mso-number-format:"0.00";}</style>' +
                '<meta name=ProgId content=Excel.Sheet>' +
                '<meta charset=UTF-8>' +
                '</head><body>' +
                this.getTable(true) +
                '</body></html>',
                base64 = function(s) {
                    return win.btoa(unescape(encodeURIComponent(s))); // #50
                };
            this.fileDownload(
                uri + base64(template),
                'xls',
                template,
                'application/vnd.ms-excel'
            );
        };

        /**
         * View the data in a table below the chart
         */
        Highcharts.Chart.prototype.viewData = function() {
            if (!this.dataTableDiv) {
                this.dataTableDiv = doc.createElement('div');
                this.dataTableDiv.className = 'highcharts-data-table';

                // Insert after the chart container
                this.renderTo.parentNode.insertBefore(
                    this.dataTableDiv,
                    this.renderTo.nextSibling
                );
            }

            this.dataTableDiv.innerHTML = this.getTable();
        };


        // Add "Download CSV" to the exporting menu. Use download attribute if supported, else
        // run a simple PHP script that returns a file. The source code for the PHP script can be viewed at
        // https://raw.github.com/highslide-software/highcharts.com/master/studies/csv-export/csv.php
        if (Highcharts.getOptions().exporting) {
            Highcharts.getOptions().exporting.buttons.contextButton.menuItems.push({
                textKey: 'downloadCSV',
                onclick: function() {
                    this.downloadCSV();
                }
            }, {
                textKey: 'downloadXLS',
                onclick: function() {
                    this.downloadXLS();
                }
            }, {
                textKey: 'viewData',
                onclick: function() {
                    this.viewData();
                }
            });
        }

        // Series specific
        if (seriesTypes.map) {
            seriesTypes.map.prototype.exportKey = 'name';
        }
        if (seriesTypes.mapbubble) {
            seriesTypes.mapbubble.prototype.exportKey = 'name';
        }
        if (seriesTypes.treemap) {
            seriesTypes.treemap.prototype.exportKey = 'name';
        }


    }(Highcharts));
}));
