/* ------------------------------------------------------------------------------
 *
 *  # Dashboard configuration for boxed layout
 *
 *  Demo dashboard configuration. Contains charts and plugin initializations
 *
 * ---------------------------------------------------------------------------- */


// Setup module
// ------------------------------

var Dashboard = function () {


    //
    // Setup module components
    //

    // Setup Switchery
    var _componentSwitchery = function() {
        if (typeof Switchery == 'undefined') {
            console.warn('Warning - switchery.min.js is not loaded.');
            return;
        }

        // Initialize multiple switches
        var switches = Array.prototype.slice.call(document.querySelectorAll('.form-input-switchery'));
        switches.forEach(function(html) {
            var switchery = new Switchery(html);
        });
    };

    // Setup Daterangepicker
    var _componentDaterange = function() {
        if (!$().daterangepicker) {
            console.warn('Warning - daterangepicker.js is not loaded.');
            return;
        }

        // Initialize
        $('.daterange-ranges').daterangepicker(
            {
                startDate: moment().subtract(29, 'days'),
                endDate: moment(),
                minDate: '01/01/2015',
                maxDate: '12/31/2019',
                dateLimit: { days: 60 },
                ranges: {
                    'Today': [moment(), moment()],
                    'Yesterday': [moment().subtract(1, 'days'), moment().subtract(1, 'days')],
                    'Last 7 Days': [moment().subtract(6, 'days'), moment()],
                    'Last 30 Days': [moment().subtract(29, 'days'), moment()],
                    'This Month': [moment().startOf('month'), moment().endOf('month')],
                    'Last Month': [moment().subtract(1, 'month').startOf('month'), moment().subtract(1, 'month').endOf('month')]
                },
                opens: $('html').attr('dir') == 'rtl' ? 'right' : 'left',
                applyClass: 'btn-sm bg-slate-600 btn-block',
                cancelClass: 'btn-sm btn-light btn-block',
                locale: {
                    format: 'MM/DD/YYYY',
                    direction: $('html').attr('dir') == 'rtl' ? 'rtl' : 'ltr'
                }
            },
            function(start, end) {
                $('.daterange-ranges span').html(start.format('MMMM D') + ' - ' + end.format('MMMM D'));
            }
        );
        $('.daterange-ranges span').html(moment().subtract(29, 'days').format('MMMM D') + ' - ' + moment().format('MMMM D'));
    };

    // Use first letter as an icon
    var _componentIconLetter = function() {

        // Grab first letter and insert to the icon
        $('.table tr').each(function() {

            // Title
            var $title = $(this).find('.letter-icon-title'),
                letter = $title.eq(0).text().charAt(0).toUpperCase();

            // Icon
            var $icon = $(this).find('.letter-icon');
                $icon.eq(0).text(letter);
        });
    };


    //
    // Charts configs
    //

    // Traffic sources stream chart
    var _TrafficSourcesStreamChart = function(element, height) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {

            // Basic setup
            // ------------------------------

            // Define main variables
            var d3Container = d3.select(element),
                margin = {top: 5, right: 50, bottom: 40, left: 50},
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
                height = height - margin.top - margin.bottom,
                tooltipOffset = 30;

            // Tooltip
            var tooltip = d3Container
                .append('div')
                .attr('class', 'd3-tip e')
                .style('display', 'none')

            // Format date
            var format = d3.time.format('%m/%d/%y %H:%M');
            var formatDate = d3.time.format('%H:%M');

            // Colors
            var colorrange = ['#03A9F4', '#29B6F6', '#4FC3F7', '#81D4FA', '#B3E5FC', '#E1F5FE'];



            // Construct scales
            // ------------------------------

            // Horizontal
            var x = d3.time.scale().range([0, width]);

            // Vertical
            var y = d3.scale.linear().range([height, 0]);

            // Colors
            var z = d3.scale.ordinal().range(colorrange);



            // Create axes
            // ------------------------------

            // Horizontal
            var xAxis = d3.svg.axis()
                .scale(x)
                .orient('bottom')
                .ticks(d3.time.hours, 4)
                .innerTickSize(4)
                .tickPadding(8)
                .tickFormat(d3.time.format('%H:%M')); // Display hours and minutes in 24h format

            // Left vertical
            var yAxis = d3.svg.axis()
                .scale(y)
                .ticks(6)
                .innerTickSize(4)
                .outerTickSize(0)
                .tickPadding(8)
                .tickFormat(function (d) { return (d/1000) + 'k'; });

            // Right vertical
            var yAxis2 = yAxis;

            // Dash lines
            var gridAxis = d3.svg.axis()
                .scale(y)
                .orient('left')
                .ticks(6)
                .tickPadding(8)
                .tickFormat('')
                .tickSize(-width, 0, 0);



            // Create chart
            // ------------------------------

            // Container
            var container = d3Container.append('svg')

            // SVG element
            var svg = container
                .attr('width', width + margin.left + margin.right)
                .attr('height', height + margin.top + margin.bottom)
                    .append('g')
                    .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');



            // Construct chart layout
            // ------------------------------

            // Stack
            var stack = d3.layout.stack()
                .offset('silhouette')
                .values(function(d) { return d.values; })
                .x(function(d) { return d.date; })
                .y(function(d) { return d.value; });

            // Nest
            var nest = d3.nest()
                .key(function(d) { return d.key; });

            // Area
            var area = d3.svg.area()
                .interpolate('cardinal')
                .x(function(d) { return x(d.date); })
                .y0(function(d) { return y(d.y0); })
                .y1(function(d) { return y(d.y0 + d.y); });



            // Load data
            // ------------------------------

            d3.csv('../../../../global_assets/demo_data/dashboard/traffic_sources.csv', function (error, data) {

                // Pull out values
                data.forEach(function (d) {
                    d.date = format.parse(d.date);
                    d.value = +d.value;
                });

                // Stack and nest layers
                var layers = stack(nest.entries(data));



                // Set input domains
                // ------------------------------

                // Horizontal
                x.domain(d3.extent(data, function(d, i) { return d.date; }));

                // Vertical
                y.domain([0, d3.max(data, function(d) { return d.y0 + d.y; })]);



                // Add grid
                // ------------------------------

                // Horizontal grid. Must be before the group
                svg.append('g')
                    .attr('class', 'd3-grid-dashed')
                    .call(gridAxis);



                //
                // Append chart elements
                //

                // Stream layers
                // ------------------------------

                // Create group
                var group = svg.append('g')
                    .attr('class', 'streamgraph-layers-group');

                // And append paths to this group
                var layer = group.selectAll('.streamgraph-layer')
                    .data(layers)
                    .enter()
                        .append('path')
                        .attr('class', 'streamgraph-layer')
                        .attr('d', function(d) { return area(d.values); })                    
                        .style('stroke', '#fff')
                        .style('stroke-width', 0.5)
                        .style('fill', function(d, i) { return z(i); });

                // Add transition
                var layerTransition = layer
                    .style('opacity', 0)
                    .transition()
                        .duration(750)
                        .delay(function(d, i) { return i * 50; })
                        .style('opacity', 1)



                // Append axes
                // ------------------------------

                //
                // Left vertical
                //

                svg.append('g')
                    .attr('class', 'd3-axis d3-axis-left d3-axis-solid')
                    .call(yAxis.orient('left'));

                // Hide first tick
                d3.select(svg.selectAll('.d3-axis-left .tick text')[0][0])
                    .style('visibility', 'hidden');


                //
                // Right vertical
                //

                svg.append('g')
                    .attr('class', 'd3-axis d3-axis-right d3-axis-solid')
                    .attr('transform', 'translate(' + width + ', 0)')
                    .call(yAxis2.orient('right'));

                // Hide first tick
                d3.select(svg.selectAll('.d3-axis-right .tick text')[0][0])
                    .style('visibility', 'hidden');


                //
                // Horizontal
                //

                var xaxisg = svg.append('g')
                    .attr('class', 'd3-axis d3-axis-horizontal d3-axis-solid')
                    .attr('transform', 'translate(0,' + height + ')')
                    .call(xAxis);

                // Add extra subticks for hidden hours
                xaxisg.selectAll('.d3-axis-subticks')
                    .data(x.ticks(d3.time.hours), function(d) { return d; })
                    .enter()
                    .append('line')
                    .attr('class', 'd3-axis-subticks')
                    .attr('y1', 0)
                    .attr('y2', 4)
                    .attr('x1', x)
                    .attr('x2', x);



                // Add hover line and pointer
                // ------------------------------

                // Append group to the group of paths to prevent appearance outside chart area
                var hoverLineGroup = group.append('g')
                    .attr('class', 'hover-line');

                // Add line
                var hoverLine = hoverLineGroup
                    .append('line')
                    .attr('y1', 0)
                    .attr('y2', height)
                    .style('fill', 'none')
                    .style('stroke', '#fff')
                    .style('stroke-width', 1)
                    .style('pointer-events', 'none')
                    .style('shape-rendering', 'crispEdges')
                    .style('opacity', 0);

                // Add pointer
                var hoverPointer = hoverLineGroup
                    .append('rect')
                    .attr('x', 2)
                    .attr('y', 2)
                    .attr('width', 6)
                    .attr('height', 6)
                    .style('fill', '#03A9F4')
                    .style('stroke', '#fff')
                    .style('stroke-width', 1)
                    .style('shape-rendering', 'crispEdges')
                    .style('pointer-events', 'none')
                    .style('opacity', 0);



                // Append events to the layers group
                // ------------------------------

                layerTransition.each('end', function() {
                    layer
                        .on('mouseover', function (d, i) {
                            svg.selectAll('.streamgraph-layer')
                                .transition()
                                .duration(250)
                                .style('opacity', function (d, j) {
                                    return j != i ? 0.75 : 1; // Mute all except hovered
                                });
                        })

                        .on('mousemove', function (d, i) {
                            mouse = d3.mouse(this);
                            mousex = mouse[0];
                            mousey = mouse[1];
                            datearray = [];
                            var invertedx = x.invert(mousex);
                            invertedx = invertedx.getHours();
                            var selected = (d.values);
                            for (var k = 0; k < selected.length; k++) {
                                datearray[k] = selected[k].date
                                datearray[k] = datearray[k].getHours();
                            }
                            mousedate = datearray.indexOf(invertedx);
                            pro = d.values[mousedate].value;


                            // Display mouse pointer
                            hoverPointer
                                .attr('x', mousex - 3)
                                .attr('y', mousey - 6)
                                .style('opacity', 1);

                            hoverLine
                                .attr('x1', mousex)
                                .attr('x2', mousex)
                                .style('opacity', 1);

                            //
                            // Tooltip
                            //

                            // Tooltip data
                            tooltip.html(
                                '<ul class="list-unstyled mb-1">' +
                                    '<li>' + '<div class="font-size-base my-1"><i class="icon-circle-left2 mr-2"></i>' + d.key + '</div>' + '</li>' +
                                    '<li>' + 'Visits: &nbsp;' + "<span class='font-weight-semibold float-right'>" + pro + '</span>' + '</li>' +
                                    '<li>' + 'Time: &nbsp; ' + '<span class="font-weight-semibold float-right">' + formatDate(d.values[mousedate].date) + '</span>' + '</li>' + 
                                '</ul>'
                            )
                            .style('display', 'block');

                            // Tooltip arrow
                            tooltip.append('div').attr('class', 'd3-tip-arrow');
                        })

                        .on('mouseout', function (d, i) {

                            // Revert full opacity to all paths
                            svg.selectAll('.streamgraph-layer')
                                .transition()
                                .duration(250)
                                .style('opacity', 1);

                            // Hide cursor pointer
                            hoverPointer.style('opacity', 0);

                            // Hide tooltip
                            tooltip.style('display', 'none');

                            hoverLine.style('opacity', 0);
                        });
                    });



                // Append events to the chart container
                // ------------------------------

                d3Container
                    .on('mousemove', function (d, i) {
                        mouse = d3.mouse(this);
                        mousex = mouse[0];
                        mousey = mouse[1];

                        // Move tooltip vertically
                        tooltip.style('top', (mousey - ($('.d3-tip').outerHeight() / 2)) - 2 + 'px') // Half tooltip height - half arrow width

                        // Move tooltip horizontally
                        if(mousex >= ($(element).outerWidth() - $('.d3-tip').outerWidth() - margin.right - (tooltipOffset * 2))) {
                            tooltip
                                .style('left', (mousex - $('.d3-tip').outerWidth() - tooltipOffset) + 'px') // Change tooltip direction from right to left to keep it inside graph area
                                .attr('class', 'd3-tip w');
                        }
                        else {
                            tooltip
                                .style('left', (mousex + tooltipOffset) + 'px' )
                                .attr('class', 'd3-tip e');
                        }
                    });
            });



            // Resize chart
            // ------------------------------

            // Call function on window resize
            $(window).on('resize', resizeStream);

            // Call function on sidebar width change
            $(document).on('click', '.sidebar-control', resizeStream);

            // Resize function
            // 
            // Since D3 doesn't support SVG resize by default,
            // we need to manually specify parts of the graph that need to 
            // be updated on window resize
            function resizeStream() {

                // Layout
                // -------------------------

                // Define width
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;

                // Main svg width
                container.attr('width', width + margin.left + margin.right);

                // Width of appended group
                svg.attr('width', width + margin.left + margin.right);

                // Horizontal range
                x.range([0, width]);


                // Chart elements
                // -------------------------

                // Horizontal axis
                svg.selectAll('.d3-axis-horizontal').call(xAxis);

                // Horizontal axis subticks
                svg.selectAll('.d3-axis-subticks').attr('x1', x).attr('x2', x);

                // Grid lines width
                svg.selectAll('.d3-grid-dashed').call(gridAxis.tickSize(-width, 0, 0))

                // Right vertical axis
                svg.selectAll('.d3-axis-right').attr('transform', 'translate(' + width + ', 0)');

                // Area paths
                svg.selectAll('.streamgraph-layer').attr('d', function(d) { return area(d.values); });
            }
        }
    };

    // App sales line chart
    var _AppSalesLinesChart = function(element, height) {
        if (typeof d3 == 'undefined' || typeof d3.tip == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Define main variables
            var d3Container = d3.select(element),
                margin = {top: 5, right: 30, bottom: 30, left: 50},
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
                height = height - margin.top - margin.bottom;

            // Tooltip
            var tooltip = d3.tip()
                .attr('class', 'd3-tip')
                .html(function (d) {
                    return '<ul class="list-unstyled mb-1">' +
                        '<li>' + '<div class="font-size-base my-1"><i class="icon-circle-left2 mr-2"></i>' + d.name + ' app' + '</div>' + '</li>' +
                        '<li>' + 'Sales: &nbsp;' + '<span class="font-weight-semibold float-right">' + d.value + '</span>' + '</li>' +
                        '<li>' + 'Revenue: &nbsp; ' + '<span class="font-weight-semibold float-right">' + '$' + (d.value * 25).toFixed(2) + '</span>' + '</li>' + 
                    '</ul>';
                });

            // Format date
            var parseDate = d3.time.format('%Y/%m/%d').parse,
                formatDate = d3.time.format('%b %d, %y');

            // Line colors
            var scale = ['#4CAF50', '#FF5722', '#5C6BC0'],
                color = d3.scale.ordinal().range(scale);


            // Create chart
            // ------------------------------

            // Container
            var container = d3Container.append('svg');

            // SVG element
            var svg = container
                .attr('width', width + margin.left + margin.right)
                .attr('height', height + margin.top + margin.bottom)
                .append('g')
                    .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
                    .call(tooltip);



            // Add date range switcher
            // ------------------------------

            // Menu
            var menu = $('#select_date').multiselect({
                buttonClass: 'text-default font-weight-semibold bg-transparent border-0 cursor-pointer outline-0 py-0 pl-0',
                enableHTML: true,
                dropRight: $('html').attr('dir') == 'rtl' ? false : true,
                onChange: function() {
                    change();
                },
                buttonText: function (options, element) {
                    var selected = '';
                    options.each(function() {
                        selected += $(this).html() + ', ';
                    });
                    return '<span class="badge badge-mark border-warning mr-2"></span>' + selected.substr(0, selected.length -2);
                }
            });



            // Load data
            // ------------------------------

            d3.csv('../../../../global_assets/demo_data/dashboard/app_sales.csv', function(error, data) {
                formatted = data;
                redraw();
            });


            // Construct layout
            // ------------------------------

            // Add events
            var altKey;
            d3.select(window)
                .on('keydown', function() { altKey = d3.event.altKey; })
                .on('keyup', function() { altKey = false; });
        
            // Set terms of transition on date change   
            function change() {
              d3.transition()
                  .duration(altKey ? 7500 : 500)
                  .each(redraw);
            }



            // Main chart drawing function
            // ------------------------------

            function redraw() {

                // Construct chart layout
                // ------------------------------

                // Create data nests
                var nested = d3.nest()
                    .key(function(d) { return d.type; })
                    .map(formatted)
                
                // Get value from menu selection
                // the option values correspond
                //to the [type] value we used to nest the data  
                var series = menu.val();
                
                // Only retrieve data from the selected series using nest
                var data = nested[series];
                
                // For object constancy we will need to set 'keys', one for each type of data (column name) exclude all others.
                color.domain(d3.keys(data[0]).filter(function(key) { return (key !== 'date' && key !== 'type'); }));

                // Setting up color map
                var linedata = color.domain().map(function(name) {
                    return {
                                name: name,
                                values: data.map(function(d) {
                                    return {name: name, date: parseDate(d.date), value: parseFloat(d[name], 10)};
                                })
                            };
                        });

                // Draw the line
                var line = d3.svg.line()
                    .x(function(d) { return x(d.date); })
                    .y(function(d) { return y(d.value); })
                    .interpolate('cardinal');



                // Construct scales
                // ------------------------------

                // Horizontal
                var x = d3.time.scale()
                    .domain([
                        d3.min(linedata, function(c) { return d3.min(c.values, function(v) { return v.date; }); }),
                        d3.max(linedata, function(c) { return d3.max(c.values, function(v) { return v.date; }); })
                    ])
                    .range([0, width]);

                // Vertical
                var y = d3.scale.linear()
                    .domain([
                        d3.min(linedata, function(c) { return d3.min(c.values, function(v) { return v.value; }); }),
                        d3.max(linedata, function(c) { return d3.max(c.values, function(v) { return v.value; }); })
                    ])
                    .range([height, 0]);



                // Create axes
                // ------------------------------

                // Horizontal
                var xAxis = d3.svg.axis()
                    .scale(x)
                    .orient('bottom')
                    .tickPadding(8)
                    .ticks(d3.time.days)
                    .innerTickSize(4)
                    .tickFormat(d3.time.format('%a')); // Display hours and minutes in 24h format

                // Vertical
                var yAxis = d3.svg.axis()
                    .scale(y)
                    .orient('left')
                    .ticks(6)
                    .tickSize(0 -width)
                    .tickPadding(8);
                


                //
                // Append chart elements
                //

                // Append axes
                // ------------------------------

                // Horizontal
                svg.append('g')
                    .attr('class', 'd3-axis d3-axis-horizontal d3-axis-solid')
                    .attr('transform', 'translate(0,' + height + ')');

                // Vertical
                svg.append('g')
                    .attr('class', 'd3-axis d3-axis-vertical d3-axis-transparent');



                // Append lines
                // ------------------------------

                // Bind the data
                var lines = svg.selectAll('.lines')
                    .data(linedata)
             
                // Append a group tag for each line
                var lineGroup = lines
                    .enter()
                    .append('g')
                        .attr('class', 'lines')
                        .attr('id', function(d){ return d.name + '-line'; });

                // Append the line to the graph
                lineGroup.append('path')
                    .attr('class', 'd3-line d3-line-medium')
                    .style('stroke', function(d) { return color(d.name); })
                    .style('opacity', 0)
                    .attr('d', function(d) { return line(d.values[0]); })
                    .transition()
                        .duration(500)
                        .delay(function(d, i) { return i * 200; })
                        .style('opacity', 1);
              


                // Append circles
                // ------------------------------

                var circles = lines.selectAll('circle')
                    .data(function(d) { return d.values; })
                    .enter()
                    .append('circle')
                        .attr('class', 'd3-line-circle d3-line-circle-medium')
                        .attr('cx', function(d,i){return x(d.date)})
                        .attr('cy',function(d,i){return y(d.value)})
                        .attr('r', 3)
                        .style('fill', '#fff')
                        .style('stroke', function(d) { return color(d.name); });

                // Add transition
                circles
                    .style('opacity', 0)
                    .transition()
                        .duration(500)
                        .delay(500)
                        .style('opacity', 1);



                // Append tooltip
                // ------------------------------

                // Add tooltip on circle hover
                circles
                    .on('mouseover', function (d) {
                        tooltip.offset([-15, 0]).show(d);

                        // Animate circle radius
                        d3.select(this).transition().duration(250).attr('r', 4);
                    })
                    .on('mouseout', function (d) {
                        tooltip.hide(d);

                        // Animate circle radius
                        d3.select(this).transition().duration(250).attr('r', 3);
                    });

                // Change tooltip direction of first point
                // to always keep it inside chart, useful on mobiles
                lines.each(function (d) { 
                    d3.select(d3.select(this).selectAll('circle')[0][0])
                        .on('mouseover', function (d) {
                            tooltip.offset([0, 15]).direction('e').show(d);

                            // Animate circle radius
                            d3.select(this).transition().duration(250).attr('r', 4);
                        })
                        .on('mouseout', function (d) {
                            tooltip.direction('n').hide(d);

                            // Animate circle radius
                            d3.select(this).transition().duration(250).attr('r', 3);
                        });
                })

                // Change tooltip direction of last point
                // to always keep it inside chart, useful on mobiles
                lines.each(function (d) { 
                    d3.select(d3.select(this).selectAll('circle')[0][d3.select(this).selectAll('circle').size() - 1])
                        .on('mouseover', function (d) {
                            tooltip.offset([0, -15]).direction('w').show(d);

                            // Animate circle radius
                            d3.select(this).transition().duration(250).attr('r', 4);
                        })
                        .on('mouseout', function (d) {
                            tooltip.direction('n').hide(d);

                            // Animate circle radius
                            d3.select(this).transition().duration(250).attr('r', 3);
                        })
                })



                // Update chart on date change
                // ------------------------------

                // Set variable for updating visualization
                var lineUpdate = d3.transition(lines);
                
                // Update lines
                lineUpdate.select('path')
                    .attr('d', function(d, i) { return line(d.values); });

                // Update circles
                lineUpdate.selectAll('circle')
                    .attr('cy',function(d,i){return y(d.value)})
                    .attr('cx', function(d,i){return x(d.date)});

                // Update vertical axes
                d3.transition(svg)
                    .select('.d3-axis-vertical')
                    .call(yAxis);   

                // Update horizontal axes
                d3.transition(svg)
                    .select('.d3-axis-horizontal')
                    .attr('transform', 'translate(0,' + height + ')')
                    .call(xAxis);



                // Resize chart
                // ------------------------------

                // Call function on window resize
                $(window).on('resize', appSalesResize);

                // Call function on sidebar width change
                $(document).on('click', '.sidebar-control', appSalesResize);

                // Resize function
                // 
                // Since D3 doesn't support SVG resize by default,
                // we need to manually specify parts of the graph that need to 
                // be updated on window resize
                function appSalesResize() {

                    // Layout
                    // -------------------------

                    // Define width
                    width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;

                    // Main svg width
                    container.attr('width', width + margin.left + margin.right);

                    // Width of appended group
                    svg.attr('width', width + margin.left + margin.right);

                    // Horizontal range
                    x.range([0, width]);

                    // Vertical range
                    y.range([height, 0]);


                    // Chart elements
                    // -------------------------

                    // Horizontal axis
                    svg.select('.d3-axis-horizontal').call(xAxis);

                    // Vertical axis
                    svg.select('.d3-axis-vertical').call(yAxis.tickSize(0-width));

                    // Lines
                    svg.selectAll('.d3-line').attr('d', function(d, i) { return line(d.values); });

                    // Circles
                    svg.selectAll('.d3-line-circle').attr('cx', function(d,i){return x(d.date)})
                }
            }
        }
    };

    // Monthly sales area chart
    var _MonthlySalesAreaChart = function(element, height, color) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Define main variables
            var d3Container = d3.select(element),
                margin = {top: 20, right: 35, bottom: 40, left: 35},
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
                height = height - margin.top - margin.bottom;

            // Date and time format
            var parseDate = d3.time.format('%Y-%m-%d').parse,
                bisectDate = d3.bisector(function(d) { return d.date; }).left,
                formatDate = d3.time.format('%b %d');


            // Create SVG
            // ------------------------------

            // Container
            var container = d3Container.append('svg');

            // SVG element
            var svg = container
                .attr('width', width + margin.left + margin.right)
                .attr('height', height + margin.top + margin.bottom)
                .append('g')
                    .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')



            // Construct chart layout
            // ------------------------------

            // Area
            var area = d3.svg.area()
                .x(function(d) { return x(d.date); })
                .y0(height)
                .y1(function(d) { return y(d.value); })
                .interpolate('monotone')


            // Construct scales
            // ------------------------------

            // Horizontal
            var x = d3.time.scale().range([0, width ]);

            // Vertical
            var y = d3.scale.linear().range([height, 0]);


            // Create axes
            // ------------------------------

            // Horizontal
            var xAxis = d3.svg.axis()
                .scale(x)
                .orient('bottom')
                .ticks(d3.time.days, 6)
                .innerTickSize(4)
                .tickPadding(8)
                .tickFormat(d3.time.format('%b %d'));


            // Load data
            // ------------------------------

            d3.json('../../../../global_assets/demo_data/dashboard/monthly_sales.json', function (error, data) {

                // Show what's wrong if error
                if (error) return console.error(error);

                // Pull out values
                data.forEach(function (d) {
                    d.date = parseDate(d.date);
                    d.value = +d.value;
                });

                // Get the maximum value in the given array
                var maxY = d3.max(data, function(d) { return d.value; });

                // Reset start data for animation
                var startData = data.map(function(datum) {
                    return {
                        date: datum.date,
                        value: 0
                    };
                });


                // Set input domains
                // ------------------------------

                // Horizontal
                x.domain(d3.extent(data, function(d, i) { return d.date; }));

                // Vertical
                y.domain([0, d3.max( data, function(d) { return d.value; })]);



                //
                // Append chart elements
                //

                // Append axes
                // -------------------------

                // Horizontal
                var horizontalAxis = svg.append('g')
                    .attr('class', 'd3-axis d3-axis-horizontal d3-axis-solid')
                    .attr('transform', 'translate(0,' + height + ')')
                    .call(xAxis);

                // Add extra subticks for hidden hours
                horizontalAxis.selectAll('.d3-axis-subticks')
                    .data(x.ticks(d3.time.days), function(d) { return d; })
                    .enter()
                        .append('line')
                        .attr('class', 'd3-axis-subticks')
                        .attr('y1', 0)
                        .attr('y2', 4)
                        .attr('x1', x)
                        .attr('x2', x);



                // Append area
                // -------------------------

                // Add area path
                svg.append('path')
                    .datum(data)
                    .attr('class', 'd3-area')
                    .attr('d', area)
                    .style('fill', color)
                    .transition() // begin animation
                        .duration(1000)
                        .attrTween('d', function() {
                            var interpolator = d3.interpolateArray(startData, data);
                            return function (t) {
                                return area(interpolator (t));
                            }
                        });



                // Append crosshair and tooltip
                // -------------------------

                //
                // Line
                //

                // Line group
                var focusLine = svg.append('g')
                    .attr('class', 'd3-crosshair-line')
                    .style('display', 'none');

                // Line element
                focusLine.append('line')
                    .attr('class', 'vertical-crosshair')
                    .attr('y1', 0)
                    .attr('y2', -maxY)
                    .style('stroke', '#e5e5e5')
                    .style('shape-rendering', 'crispEdges')


                //
                // Pointer
                //

                // Pointer group
                var focusPointer = svg.append('g')
                    .attr('class', 'd3-crosshair-pointer')
                    .style('display', 'none');

                // Pointer element
                focusPointer.append('circle')
                    .attr('r', 3)
                    .style('fill', '#fff')
                    .style('stroke', color)
                    .style('stroke-width', 1)


                //
                // Text
                //

                // Text group
                var focusText = svg.append('g')
                    .attr('class', 'd3-crosshair-text')
                    .style('display', 'none');

                // Text element
                focusText.append('text')
                    .attr('dy', -10)
                    .style('font-size', 12);


                //
                // Overlay with events
                //

                svg.append('rect')
                    .attr('class', 'd3-crosshair-overlay')
                    .style('fill', 'none')
                    .style('pointer-events', 'all')
                    .attr('width', width)
                    .attr('height', height)
                        .on('mouseover', function() {
                            focusPointer.style('display', null);        
                            focusLine.style('display', null)
                            focusText.style('display', null);
                        })
                        .on('mouseout', function() {
                            focusPointer.style('display', 'none'); 
                            focusLine.style('display', 'none');
                            focusText.style('display', 'none');
                        })
                        .on('mousemove', mousemove);


                // Display tooltip on mousemove
                function mousemove() {

                    // Define main variables
                    var mouse = d3.mouse(this),
                        mousex = mouse[0],
                        mousey = mouse[1],
                        x0 = x.invert(mousex),
                        i = bisectDate(data, x0),
                        d0 = data[i - 1],
                        d1 = data[i],
                        d = x0 - d0.date > d1.date - x0 ? d1 : d0;

                    // Move line
                    focusLine.attr('transform', 'translate(' + x(d.date) + ',' + height + ')');

                    // Move pointer
                    focusPointer.attr('transform', 'translate(' + x(d.date) + ',' + y(d.value) + ')');

                    // Reverse tooltip at the end point
                    if(mousex >= (d3Container.node().getBoundingClientRect().width - focusText.select('text').node().getBoundingClientRect().width - margin.right - margin.left)) {
                        focusText.select('text').attr('text-anchor', 'end').attr('x', function () { return (x(d.date) - 15) + 'px' }).text(formatDate(d.date) + ' - ' + d.value + ' sales');
                    }
                    else {
                        focusText.select('text').attr('text-anchor', 'start').attr('x', function () { return (x(d.date) + 15) + 'px' }).text(formatDate(d.date) + ' - ' + d.value + ' sales');
                    }
                }



                // Resize chart
                // ------------------------------

                // Call function on window resize
                $(window).on('resize', monthlySalesAreaResize);

                // Call function on sidebar width change
                $(document).on('click', '.sidebar-control', monthlySalesAreaResize);

                // Resize function
                // 
                // Since D3 doesn't support SVG resize by default,
                // we need to manually specify parts of the graph that need to 
                // be updated on window resize
                function monthlySalesAreaResize() {

                    // Layout variables
                    width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;


                    // Layout
                    // -------------------------

                    // Main svg width
                    container.attr('width', width + margin.left + margin.right);

                    // Width of appended group
                    svg.attr('width', width + margin.left + margin.right);


                    // Axes
                    // -------------------------

                    // Horizontal range
                    x.range([0, width]);

                    // Horizontal axis
                    svg.selectAll('.d3-axis-horizontal').call(xAxis);

                    // Horizontal axis subticks
                    svg.selectAll('.d3-axis-subticks').attr('x1', x).attr('x2', x);


                    // Chart elements
                    // -------------------------

                    // Area path
                    svg.selectAll('.d3-area').datum(data).attr('d', area);

                    // Crosshair
                    svg.selectAll('.d3-crosshair-overlay').attr('width', width);
                }
            });
        }
    };

    // Messages area chart
    var _MessagesAreaChart = function(element, height, color) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Define main variables
            var d3Container = d3.select(element),
                margin = {top: 0, right: 0, bottom: 0, left: 0},
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
                height = height - margin.top - margin.bottom;

            // Date and time format
            var parseDate = d3.time.format('%Y-%m-%d').parse;


            // Create SVG
            // ------------------------------

            // Container
            var container = d3Container.append('svg');

            // SVG element
            var svg = container
                .attr('width', width + margin.left + margin.right)
                .attr('height', height + margin.top + margin.bottom)
                .append('g')
                    .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')


            // Construct chart layout
            // ------------------------------

            // Area
            var area = d3.svg.area()
                .x(function(d) { return x(d.date); })
                .y0(height)
                .y1(function(d) { return y(d.value); })
                .interpolate('monotone')


            // Construct scales
            // ------------------------------

            // Horizontal
            var x = d3.time.scale().range([0, width ]);

            // Vertical
            var y = d3.scale.linear().range([height, 0]);


            // Load data
            // ------------------------------

            d3.json('../../../../global_assets/demo_data/dashboard/monthly_sales.json', function (error, data) {

                // Show what's wrong if error
                if (error) return console.error(error);

                // Pull out values
                data.forEach(function (d) {
                    d.date = parseDate(d.date);
                    d.value = +d.value;
                });

                // Get the maximum value in the given array
                var maxY = d3.max(data, function(d) { return d.value; });

                // Reset start data for animation
                var startData = data.map(function(datum) {
                    return {
                        date: datum.date,
                        value: 0
                    };
                });


                // Set input domains
                // ------------------------------

                // Horizontal
                x.domain(d3.extent(data, function(d, i) { return d.date; }));

                // Vertical
                y.domain([0, d3.max( data, function(d) { return d.value; })]);



                //
                // Append chart elements
                //

                // Add area path
                svg.append('path')
                    .datum(data)
                    .attr('class', 'd3-area')
                    .style('fill', color)
                    .attr('d', area)
                    .transition() // begin animation
                        .duration(1000)
                        .attrTween('d', function() {
                            var interpolator = d3.interpolateArray(startData, data);
                            return function (t) {
                                return area(interpolator (t));
                            }
                        });


                // Resize chart
                // ------------------------------

                // Call function on window resize
                $(window).on('resize', messagesAreaResize);

                // Call function on sidebar width change
                $(document).on('click', '.sidebar-control', messagesAreaResize);

                // Resize function
                // 
                // Since D3 doesn't support SVG resize by default,
                // we need to manually specify parts of the graph that need to 
                // be updated on window resize
                function messagesAreaResize() {

                    // Layout variables
                    width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;


                    // Layout
                    // -------------------------

                    // Main svg width
                    container.attr('width', width + margin.left + margin.right);

                    // Width of appended group
                    svg.attr('width', width + margin.left + margin.right);

                    // Horizontal range
                    x.range([0, width]);


                    // Chart elements
                    // -------------------------

                    // Area path
                    svg.selectAll('.d3-area').datum( data ).attr('d', area);
                }
            });
        }
    };

    // Sparklines chart
    var _chartSparkline = function(element, chartType, qty, height, interpolation, duration, interval, color) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Define main variables
            var d3Container = d3.select(element),
                margin = {top: 0, right: 0, bottom: 0, left: 0},
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
                height = height - margin.top - margin.bottom;


            // Generate random data (for demo only)
            var data = [];
            for (var i=0; i < qty; i++) {
                data.push(Math.floor(Math.random() * qty) + 5)
            }


            // Construct scales
            // ------------------------------

            // Horizontal
            var x = d3.scale.linear().range([0, width]);

            // Vertical
            var y = d3.scale.linear().range([height - 5, 5]);


            // Set input domains
            // ------------------------------

            // Horizontal
            x.domain([1, qty - 3])

            // Vertical
            y.domain([0, qty])
                


            // Construct chart layout
            // ------------------------------

            // Line
            var line = d3.svg.line()
                .interpolate(interpolation)
                .x(function(d, i) { return x(i); })
                .y(function(d, i) { return y(d); });

            // Area
            var area = d3.svg.area()
                .interpolate(interpolation)
                .x(function(d, i) { 
                    return x(i); 
                })
                .y0(height)
                .y1(function(d) { 
                    return y(d); 
                });



            // Create SVG
            // ------------------------------

            // Container
            var container = d3Container.append('svg');

            // SVG element
            var svg = container
                .attr('width', width + margin.left + margin.right)
                .attr('height', height + margin.top + margin.bottom)
                .append("g")
                    .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');



            // Add mask for animation
            // ------------------------------

            // Add clip path
            var clip = svg.append('defs')
                .append('clipPath')
                .attr('id', function(d, i) { return 'load-clip-' + element.substring(1) })

            // Add clip shape
            var clips = clip.append('rect')
                .attr('class', 'load-clip')
                .attr('width', 0)
                .attr('height', height);

            // Animate mask
            clips
                .transition()
                    .duration(1000)
                    .ease('linear')
                    .attr('width', width);



            //
            // Append chart elements
            //

            // Main path
            var path = svg.append('g')
                .attr('clip-path', function(d, i) { return 'url(#load-clip-' + element.substring(1) + ')'})
                .append('path')
                    .datum(data)
                    .attr('transform', 'translate(' + x(0) + ',0)');

            // Add path based on chart type
            if(chartType == 'area') {
                path.attr('d', area).attr('class', 'd3-area').style('fill', color); // area
            }
            else {
                path.attr('d', line).attr('class', 'd3-line d3-line-medium').style('stroke', color); // line
            }

            // Animate path
            path
                .style('opacity', 0)
                .transition()
                    .duration(750)
                    .style('opacity', 1);



            // Set update interval. For demo only
            // ------------------------------

            setInterval(function() {

                // push a new data point onto the back
                data.push(Math.floor(Math.random() * qty) + 5);

                // pop the old data point off the front
                data.shift();

                update();

            }, interval);



            // Update random data. For demo only
            // ------------------------------

            function update() {

                // Redraw the path and slide it to the left
                path
                    .attr('transform', null)
                    .transition()
                        .duration(duration)
                        .ease('linear')
                        .attr('transform', 'translate(' + x(0) + ',0)');

                // Update path type
                if(chartType == 'area') {
                    path.attr('d', area).attr('class', 'd3-area').style('fill', color)
                }
                else {
                    path.attr('d', line).attr('class', 'd3-line d3-line-medium').style('stroke', color);
                }
            }



            // Resize chart
            // ------------------------------

            // Call function on window resize
            $(window).on('resize', resizeSparklines);

            // Call function on sidebar width change
            $(document).on('click', '.sidebar-control', resizeSparklines);

            // Resize function
            // 
            // Since D3 doesn't support SVG resize by default,
            // we need to manually specify parts of the graph that need to 
            // be updated on window resize
            function resizeSparklines() {

                // Layout variables
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;


                // Layout
                // -------------------------

                // Main svg width
                container.attr('width', width + margin.left + margin.right);

                // Width of appended group
                svg.attr('width', width + margin.left + margin.right);

                // Horizontal range
                x.range([0, width]);


                // Chart elements
                // -------------------------

                // Clip mask
                clips.attr('width', width);

                // Line
                svg.select('.d3-line').attr('d', line);

                // Area
                svg.select('.d3-area').attr('d', area);
            }
        }
    };

    // Daily revenue line chart
    var _DailyRevenueLineChart = function(element, height) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Add data set
            var dataset = [
                {
                    'date': '04/13/14',
                    'alpha': '60'
                }, {
                    'date': '04/14/14',
                    'alpha': '35'
                }, {
                    'date': '04/15/14',
                    'alpha': '65'
                }, {
                    'date': '04/16/14',
                    'alpha': '50'
                }, {
                    'date': '04/17/14',
                    'alpha': '65'
                }, {
                    'date': '04/18/14',
                    'alpha': '20'
                }, {
                    'date': '04/19/14',
                    'alpha': '60'
                }
            ];

            // Main variables
            var d3Container = d3.select(element),
                margin = {top: 0, right: 0, bottom: 0, left: 0},
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
                height = height - margin.top - margin.bottom,
                padding = 20;

            // Format date
            var parseDate = d3.time.format('%m/%d/%y').parse,
                formatDate = d3.time.format('%a, %B %e');



            // Add tooltip
            // ------------------------------

            var tooltip = d3.tip()
                .attr('class', 'd3-tip')
                .html(function (d) {
                    return '<ul class="list-unstyled mb-1">' +
                        '<li>' + '<div class="font-size-base my-1"><i class="icon-check2 mr-2"></i>' + formatDate(d.date) + '</div>' + '</li>' +
                        '<li>' + 'Sales: &nbsp;' + '<span class="font-weight-semibold float-right">' + d.alpha + '</span>' + '</li>' +
                        '<li>' + 'Revenue: &nbsp; ' + '<span class="font-weight-semibold float-right">' + '$' + (d.alpha * 25).toFixed(2) + '</span>' + '</li>' + 
                    '</ul>';
                });



            // Create chart
            // ------------------------------

            // Add svg element
            var container = d3Container.append('svg');

            // Add SVG group
            var svg = container
                    .attr('width', width + margin.left + margin.right)
                    .attr('height', height + margin.top + margin.bottom)
                    .append('g')
                        .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
                        .call(tooltip);



            // Load data
            // ------------------------------

            dataset.forEach(function (d) {
                d.date = parseDate(d.date);
                d.alpha = +d.alpha;
            });



            // Construct scales
            // ------------------------------

            // Horizontal
            var x = d3.time.scale()
                .range([padding, width - padding]);

            // Vertical
            var y = d3.scale.linear()
                .range([height, 5]);



            // Set input domains
            // ------------------------------

            // Horizontal
            x.domain(d3.extent(dataset, function (d) {
                return d.date;
            }));

            // Vertical
            y.domain([0, d3.max(dataset, function (d) {
                return Math.max(d.alpha);
            })]);



            // Construct chart layout
            // ------------------------------

            // Line
            var line = d3.svg.line()
                .x(function(d) {
                    return x(d.date);
                })
                .y(function(d) {
                    return y(d.alpha)
                });



            //
            // Append chart elements
            //

            // Add mask for animation
            // ------------------------------

            // Add clip path
            var clip = svg.append('defs')
                .append('clipPath')
                .attr('id', 'clip-line-small');

            // Add clip shape
            var clipRect = clip.append('rect')
                .attr('class', 'clip')
                .attr('width', 0)
                .attr('height', height);

            // Animate mask
            clipRect
                  .transition()
                      .duration(1000)
                      .ease('linear')
                      .attr('width', width);



            // Line
            // ------------------------------

            // Path
            var path = svg.append('path')
                .attr({
                    'd': line(dataset),
                    'clip-path': 'url(#clip-line-small)',
                    'class': 'd3-line d3-line-medium'
                })
                .style('stroke', '#fff');

            // Animate path
            svg.select('.line-tickets')
                .transition()
                    .duration(1000)
                    .ease('linear');



            // Add vertical guide lines
            // ------------------------------

            // Bind data
            var guide = svg.append('g')
                .selectAll('.d3-line-guides-group')
                .data(dataset);

            // Append lines
            guide
                .enter()
                .append('line')
                    .attr('class', 'd3-line-guides')
                    .attr('x1', function (d, i) {
                        return x(d.date);
                    })
                    .attr('y1', function (d, i) {
                        return height;
                    })
                    .attr('x2', function (d, i) {
                        return x(d.date);
                    })
                    .attr('y2', function (d, i) {
                        return height;
                    })
                    .style('stroke', 'rgba(255,255,255,0.3)')
                    .style('stroke-dasharray', '4,2')
                    .style('shape-rendering', 'crispEdges');

            // Animate guide lines
            guide
                .transition()
                    .duration(1000)
                    .delay(function(d, i) { return i * 150; })
                    .attr('y2', function (d, i) {
                        return y(d.alpha);
                    });



            // Alpha app points
            // ------------------------------

            // Add points
            var points = svg.insert('g')
                .selectAll('.d3-line-circle')
                .data(dataset)
                .enter()
                .append('circle')
                    .attr('class', 'd3-line-circle d3-line-circle-medium')
                    .attr('cx', line.x())
                    .attr('cy', line.y())
                    .attr('r', 3)
                    .style('stroke', '#fff')
                    .style('fill', '#29B6F6');



            // Animate points on page load
            points
                .style('opacity', 0)
                .transition()
                    .duration(250)
                    .ease('linear')
                    .delay(1000)
                    .style('opacity', 1);


            // Add user interaction
            points
                .on('mouseover', function (d) {
                    tooltip.offset([-10, 0]).show(d);

                    // Animate circle radius
                    d3.select(this).transition().duration(250).attr('r', 4);
                })

                // Hide tooltip
                .on('mouseout', function (d) {
                    tooltip.hide(d);

                    // Animate circle radius
                    d3.select(this).transition().duration(250).attr('r', 3);
                });

            // Change tooltip direction of first point
            d3.select(points[0][0])
                .on('mouseover', function (d) {
                    tooltip.offset([0, 10]).direction('e').show(d);

                    // Animate circle radius
                    d3.select(this).transition().duration(250).attr('r', 4);
                })
                .on('mouseout', function (d) {
                    tooltip.direction('n').hide(d);

                    // Animate circle radius
                    d3.select(this).transition().duration(250).attr('r', 3);
                });

            // Change tooltip direction of last point
            d3.select(points[0][points.size() - 1])
                .on('mouseover', function (d) {
                    tooltip.offset([0, -10]).direction('w').show(d);

                    // Animate circle radius
                    d3.select(this).transition().duration(250).attr('r', 4);
                })
                .on('mouseout', function (d) {
                    tooltip.direction('n').hide(d);

                    // Animate circle radius
                    d3.select(this).transition().duration(250).attr('r', 3);
                })



            // Resize chart
            // ------------------------------

            // Call function on window resize
            $(window).on('resize', revenueResize);

            // Call function on sidebar width change
            $(document).on('click', '.sidebar-control', revenueResize);

            // Resize function
            // 
            // Since D3 doesn't support SVG resize by default,
            // we need to manually specify parts of the graph that need to 
            // be updated on window resize
            function revenueResize() {

                // Layout variables
                width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;


                // Layout
                // -------------------------

                // Main svg width
                container.attr('width', width + margin.left + margin.right);

                // Width of appended group
                svg.attr('width', width + margin.left + margin.right);

                // Horizontal range
                x.range([padding, width - padding]);


                // Chart elements
                // -------------------------

                // Mask
                clipRect.attr('width', width);

                // Line path
                svg.selectAll('.d3-line').attr('d', line(dataset));

                // Circles
                svg.selectAll('.d3-line-circle').attr('cx', line.x());

                // Guide lines
                svg.selectAll('.d3-line-guides')
                    .attr('x1', function (d, i) {
                        return x(d.date);
                    })
                    .attr('x2', function (d, i) {
                        return x(d.date);
                    });
            }
        }
    };

    // Small progress pie chart
    var _ProgressPieChart = function(element, width, height, color) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Main variables
            var d3Container = d3.select(element),
                border = 2,
                radius = Math.min(width / 2, height / 2) - border,
                twoPi = 2 * Math.PI,
                progress = $(element).data('progress'),
                total = 100;



            // Construct chart layout
            // ------------------------------

            // Arc
            var arc = d3.svg.arc()
                .startAngle(0)
                .innerRadius(0)
                .outerRadius(radius)
                .endAngle(function(d) {
                  return (d.value / d.size) * 2 * Math.PI; 
                })



            // Create chart
            // ------------------------------

            // Add svg element
            var container = d3Container.append('svg');

            // Add SVG group
            var svg = container
                .attr('width', width)
                .attr('height', height)
                .append('g')
                    .attr('transform', 'translate(' + width / 2 + ',' + height / 2 + ')');



            //
            // Append chart elements
            //

            // Progress group
            var meter = svg.append('g')
                .attr('class', 'progress-meter');

            // Background
            meter.append('path')
                .attr('d', arc.endAngle(twoPi))
                .style('fill', '#fff')
                .style('stroke', color)
                .style('stroke-width', 1.5);

            // Foreground
            var foreground = meter.append('path')
                .style('fill', color);

            // Animate foreground path
            foreground
                .transition()
                    .ease('cubic-out')
                    .duration(2500)
                    .attrTween('d', arcTween);


            // Tween arcs
            function arcTween() {
                var i = d3.interpolate(0, progress);
                return function(t) {
                    var currentProgress = progress / (100/t);
                    var endAngle = arc.endAngle(twoPi * (currentProgress));
                    return arc(i(endAngle));
                };
            }
        }
    };

    // Marketing campaigns donut chart
    var _MarketingCampaignsDonutChart = function(element, size) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Add data set
            var data = [
                {
                    "browser": "Google Adwords",
                    "icon": "<i class='icon-google mr-2'></i>",
                    "value": 1047,
                    "color" : "#66BB6A"
                }, {
                    "browser": "Social media",
                    "icon": "<i class='icon-share4 mr-2'></i>",
                    "value": 2948,
                    "color": "#9575CD"
                }, {
                    "browser": "Youtube video",
                    "icon": "<i class='icon-youtube mr-2'></i>",
                    "value": 3909,
                    "color": "#FF7043"
                }
            ];

            // Main variables
            var d3Container = d3.select(element),
                distance = 2, // reserve 2px space for mouseover arc moving
                radius = (size/2) - distance,
                sum = d3.sum(data, function(d) { return d.value; });



            // Tooltip
            // ------------------------------

            var tip = d3.tip()
                .attr('class', 'd3-tip')
                .offset([-10, 0])
                .direction('e')
                .html(function (d) {
                    return '<ul class="list-unstyled mb-1">' +
                        '<li>' + '<div class="font-size-base mb-1 mt-1">' + d.data.icon + d.data.browser + '</div>' + '</li>' +
                        '<li>' + 'Visits: &nbsp;' + '<span class="font-weight-semibold float-right">' + d.value + '</span>' + '</li>' +
                        '<li>' + 'Share: &nbsp;' + '<span class="font-weight-semibold float-right">' + (100 / (sum / d.value)).toFixed(2) + '%' + '</span>' + '</li>' +
                    '</ul>';
                });


            // Create chart
            // ------------------------------

            // Add svg element
            var container = d3Container.append('svg').call(tip);
            
            // Add SVG group
            var svg = container
                .attr('width', size)
                .attr('height', size)
                .append('g')
                    .attr('transform', 'translate(' + (size / 2) + ',' + (size / 2) + ')');  



            // Construct chart layout
            // ------------------------------

            // Pie
            var pie = d3.layout.pie()
                .sort(null)
                .startAngle(Math.PI)
                .endAngle(3 * Math.PI)
                .value(function (d) { 
                    return d.value;
                }); 

            // Arc
            var arc = d3.svg.arc()
                .outerRadius(radius)
                .innerRadius(radius / 2);



            //
            // Append chart elements
            //

            // Group chart elements
            var arcGroup = svg.selectAll('.d3-arc')
                .data(pie(data))
                .enter()
                .append('g') 
                    .attr('class', 'd3-arc')
                    .style('stroke', '#fff')
                    .style('cursor', 'pointer');
            
            // Append path
            var arcPath = arcGroup
                .append('path')
                .style('fill', function (d) { return d.data.color; });

            // Add tooltip
            arcPath
                .on('mouseover', function (d, i) {

                    // Transition on mouseover
                    d3.select(this)
                    .transition()
                        .duration(500)
                        .ease('elastic')
                        .attr('transform', function (d) {
                            d.midAngle = ((d.endAngle - d.startAngle) / 2) + d.startAngle;
                            var x = Math.sin(d.midAngle) * distance;
                            var y = -Math.cos(d.midAngle) * distance;
                            return 'translate(' + x + ',' + y + ')';
                        });
                })

                .on('mousemove', function (d) {
                    
                    // Show tooltip on mousemove
                    tip.show(d)
                        .style('top', (d3.event.pageY - 40) + 'px')
                        .style('left', (d3.event.pageX + 30) + 'px');
                })

                .on('mouseout', function (d, i) {

                    // Mouseout transition
                    d3.select(this)
                    .transition()
                        .duration(500)
                        .ease('bounce')
                        .attr('transform', 'translate(0,0)');

                    // Hide tooltip
                    tip.hide(d);
                });

            // Animate chart on load
            arcPath
                .transition()
                    .delay(function(d, i) { return i * 500; })
                    .duration(500)
                    .attrTween('d', function(d) {
                        var interpolate = d3.interpolate(d.startAngle,d.endAngle);
                        return function(t) {
                            d.endAngle = interpolate(t);
                            return arc(d);  
                        }; 
                    });
        }
    };

    // Campaign status donut chart
    var _CampaignStatusDonutChart = function(element, size) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Add data set
            var data = [
                {
                    "status": "Active campaigns",
                    "icon": "<span class='status-mark border-blue-300 mr-2'></span>",
                    "value": 439,
                    "color": "#29B6F6"
                }, {
                    "status": "Closed campaigns",
                    "icon": "<span class='status-mark border-danger-300 mr-2'></span>",
                    "value": 290,
                    "color": "#EF5350"
                }, {
                    "status": "Pending campaigns",
                    "icon": "<span class='status-mark border-success-300 mr-2'></span>",
                    "value": 190,
                    "color": "#81C784"
                }, {
                    "status": "Campaigns on hold",
                    "icon": "<span class='status-mark border-grey-300 mr-2'></span>",
                    "value": 148,
                    "color": "#999"
                }
            ];

            // Main variables
            var d3Container = d3.select(element),
                distance = 2, // reserve 2px space for mouseover arc moving
                radius = (size/2) - distance,
                sum = d3.sum(data, function(d) { return d.value; })



            // Tooltip
            // ------------------------------

            var tip = d3.tip()
                .attr('class', 'd3-tip')
                .offset([-10, 0])
                .direction('e')
                .html(function (d) {
                    return '<ul class="list-unstyled mb-1">' +
                        '<li>' + '<div class="font-size-base mb-1 mt-1">' + d.data.icon + d.data.status + '</div>' + '</li>' +
                        '<li>' + 'Total: &nbsp;' + '<span class="font-weight-semibold float-right">' + d.value + '</span>' + '</li>' +
                        '<li>' + 'Share: &nbsp;' + '<span class="font-weight-semibold float-right">' + (100 / (sum / d.value)).toFixed(2) + '%' + '</span>' + '</li>' +
                    '</ul>';
                });



            // Create chart
            // ------------------------------

            // Add svg element
            var container = d3Container.append('svg').call(tip);
            
            // Add SVG group
            var svg = container
                .attr('width', size)
                .attr('height', size)
                .append('g')
                    .attr('transform', 'translate(' + (size / 2) + ',' + (size / 2) + ')');  



            // Construct chart layout
            // ------------------------------

            // Pie
            var pie = d3.layout.pie()
                .sort(null)
                .startAngle(Math.PI)
                .endAngle(3 * Math.PI)
                .value(function (d) { 
                    return d.value;
                }); 

            // Arc
            var arc = d3.svg.arc()
                .outerRadius(radius)
                .innerRadius(radius / 2);



            //
            // Append chart elements
            //

            // Group chart elements
            var arcGroup = svg.selectAll('.d3-arc')
                .data(pie(data))
                .enter()
                .append('g') 
                    .attr('class', 'd3-arc')
                    .style('stroke', '#fff')
                    .style('cursor', 'pointer');
            
            // Append path
            var arcPath = arcGroup
                .append('path')
                .style('fill', function (d) { return d.data.color; });

            // Add tooltip
            arcPath
                .on('mouseover', function (d, i) {

                    // Transition on mouseover
                    d3.select(this)
                    .transition()
                        .duration(500)
                        .ease('elastic')
                        .attr('transform', function (d) {
                            d.midAngle = ((d.endAngle - d.startAngle) / 2) + d.startAngle;
                            var x = Math.sin(d.midAngle) * distance;
                            var y = -Math.cos(d.midAngle) * distance;
                            return 'translate(' + x + ',' + y + ')';
                        });
                })

                .on('mousemove', function (d) {
                    
                    // Show tooltip on mousemove
                    tip.show(d)
                        .style('top', (d3.event.pageY - 40) + 'px')
                        .style('left', (d3.event.pageX + 30) + 'px');
                })

                .on('mouseout', function (d, i) {

                    // Mouseout transition
                    d3.select(this)
                    .transition()
                        .duration(500)
                        .ease('bounce')
                        .attr('transform', 'translate(0,0)');

                    // Hide tooltip
                    tip.hide(d);
                });

            // Animate chart on load
            arcPath
                .transition()
                    .delay(function(d, i) { return i * 500; })
                    .duration(500)
                    .attrTween('d', function(d) {
                        var interpolate = d3.interpolate(d.startAngle,d.endAngle);
                        return function(t) {
                            d.endAngle = interpolate(t);
                            return arc(d);  
                        }; 
                    });
        }
    };

    // Tickets status donut chart
    var _TicketStatusDonutChart = function(element, size) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Add data set
            var data = [
                {
                    "status": "Pending tickets",
                    "icon": "<i class='status-mark border-blue-300 mr-2'></i>",
                    "value": 295,
                    "color": "#29B6F6"
                }, {
                    "status": "Resolved tickets",
                    "icon": "<i class='status-mark border-success-300 mr-2'></i>",
                    "value": 189,
                    "color": "#66BB6A"
                }, {
                    "status": "Closed tickets",
                    "icon": "<i class='status-mark border-danger-300 mr-2'></i>",
                    "value": 277,
                    "color": "#EF5350"
                }
            ];

            // Main variables
            var d3Container = d3.select(element),
                distance = 2, // reserve 2px space for mouseover arc moving
                radius = (size/2) - distance,
                sum = d3.sum(data, function(d) { return d.value; })



            // Tooltip
            // ------------------------------

            var tip = d3.tip()
                .attr('class', 'd3-tip')
                .offset([-10, 0])
                .direction('e')
                .html(function (d) {
                    return '<ul class="list-unstyled mb-1">' +
                        '<li>' + '<div class="font-size-base mb-1 mt-1">' + d.data.icon + d.data.status + '</div>' + '</li>' +
                        '<li>' + 'Total: &nbsp;' + '<span class="font-weight-semibold float-right">' + d.value + '</span>' + '</li>' +
                        '<li>' + 'Share: &nbsp;' + '<span class="font-weight-semibold float-right">' + (100 / (sum / d.value)).toFixed(2) + '%' + '</span>' + '</li>' +
                    '</ul>';
                })



            // Create chart
            // ------------------------------

            // Add svg element
            var container = d3Container.append('svg').call(tip);
            
            // Add SVG group
            var svg = container
                .attr('width', size)
                .attr('height', size)
                .append('g')
                    .attr('transform', 'translate(' + (size / 2) + ',' + (size / 2) + ')');  



            // Construct chart layout
            // ------------------------------

            // Pie
            var pie = d3.layout.pie()
                .sort(null)
                .startAngle(Math.PI)
                .endAngle(3 * Math.PI)
                .value(function (d) { 
                    return d.value;
                }); 

            // Arc
            var arc = d3.svg.arc()
                .outerRadius(radius)
                .innerRadius(radius / 2);



            //
            // Append chart elements
            //

            // Group chart elements
            var arcGroup = svg.selectAll('.d3-arc')
                .data(pie(data))
                .enter()
                .append('g') 
                    .attr('class', 'd3-arc')
                    .style('stroke', '#fff')
                    .style('cursor', 'pointer');
            
            // Append path
            var arcPath = arcGroup
                .append('path')
                .style('fill', function (d) { return d.data.color; });

            // Add tooltip
            arcPath
                .on('mouseover', function (d, i) {

                    // Transition on mouseover
                    d3.select(this)
                    .transition()
                        .duration(500)
                        .ease('elastic')
                        .attr('transform', function (d) {
                            d.midAngle = ((d.endAngle - d.startAngle) / 2) + d.startAngle;
                            var x = Math.sin(d.midAngle) * distance;
                            var y = -Math.cos(d.midAngle) * distance;
                            return 'translate(' + x + ',' + y + ')';
                        });
                })

                .on('mousemove', function (d) {
                    
                    // Show tooltip on mousemove
                    tip.show(d)
                        .style('top', (d3.event.pageY - 40) + 'px')
                        .style('left', (d3.event.pageX + 30) + 'px');
                })

                .on('mouseout', function (d, i) {

                    // Mouseout transition
                    d3.select(this)
                    .transition()
                        .duration(500)
                        .ease('bounce')
                        .attr('transform', 'translate(0,0)');

                    // Hide tooltip
                    tip.hide(d);
                });

            // Animate chart on load
            arcPath
                .transition()
                    .delay(function(d, i) { return i * 500; })
                    .duration(500)
                    .attrTween('d', function(d) {
                        var interpolate = d3.interpolate(d.startAngle,d.endAngle);
                        return function(t) {
                            d.endAngle = interpolate(t);
                            return arc(d);  
                        }; 
                    });
        }
    };

    // Bar charts
    var _BarChart = function(element, barQty, height, animate, easing, duration, delay, color, tooltip) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Add data set
            var bardata = [];
            for (var i=0; i < barQty; i++) {
                bardata.push(Math.round(Math.random()*10) + 10);
            }

            // Main variables
            var d3Container = d3.select(element),
                width = d3Container.node().getBoundingClientRect().width;
            


            // Construct scales
            // ------------------------------

            // Horizontal
            var x = d3.scale.ordinal()
                .rangeBands([0, width], 0.3);

            // Vertical
            var y = d3.scale.linear()
                .range([0, height]);



            // Set input domains
            // ------------------------------

            // Horizontal
            x.domain(d3.range(0, bardata.length));

            // Vertical
            y.domain([0, d3.max(bardata)]);



            // Create chart
            // ------------------------------

            // Add svg element
            var container = d3Container.append('svg');

            // Add SVG group
            var svg = container
                .attr('width', width)
                .attr('height', height)
                .append('g');



            //
            // Append chart elements
            //

            // Bars
            var bars = svg.selectAll('rect')
                .data(bardata)
                .enter()
                .append('rect')
                    .attr('class', 'd3-random-bars')
                    .attr('width', x.rangeBand())
                    .attr('x', function(d,i) {
                        return x(i);
                    })
                    .style('fill', color);



            // Tooltip
            // ------------------------------

            var tip = d3.tip()
                .attr('class', 'd3-tip')
                .offset([-10, 0]);

            // Show and hide
            if(tooltip == 'hours' || tooltip == 'goal' || tooltip == 'members') {
                bars.call(tip)
                    .on('mouseover', tip.show)
                    .on('mouseout', tip.hide);
            }

            // Daily meetings tooltip content
            if(tooltip == 'hours') {
                tip.html(function (d, i) {
                    return '<div class="text-center">' +
                            '<h6 class="m-0">' + d + '</h6>' +
                            '<span class="font-size-sm">meetings</span>' +
                            '<div class="font-size-sm">' + i + ':00' + '</div>' +
                        '</div>'
                });
            }

            // Statements tooltip content
            if(tooltip == 'goal') {
                tip.html(function (d, i) {
                    return '<div class="text-center">' +
                            '<h6 class="m-0">' + d + '</h6>' +
                            '<span class="font-size-sm">statements</span>' +
                            '<div class="font-size-sm">' + i + ':00' + '</div>' +
                        '</div>'
                });
            }

            // Online members tooltip content
            if(tooltip == 'members') {
                tip.html(function (d, i) {
                    return '<div class="text-center">' +
                            '<h6 class="m-0">' + d + '0' + '</h6>' +
                            '<span class="font-size-sm">members</span>' +
                            '<div class="font-size-sm">' + i + ':00' + '</div>' +
                        '</div>'
                });
            }



            // Bar loading animation
            // ------------------------------

            // Choose between animated or static
            if(animate) {
                withAnimation();
            } else {
                withoutAnimation();
            }

            // Animate on load
            function withAnimation() {
                bars
                    .attr('height', 0)
                    .attr('y', height)
                    .transition()
                        .attr('height', function(d) {
                            return y(d);
                        })
                        .attr('y', function(d) {
                            return height - y(d);
                        })
                        .delay(function(d, i) {
                            return i * delay;
                        })
                        .duration(duration)
                        .ease(easing);
            }

            // Load without animateion
            function withoutAnimation() {
                bars
                    .attr('height', function(d) {
                        return y(d);
                    })
                    .attr('y', function(d) {
                        return height - y(d);
                    })
            }



            // Resize chart
            // ------------------------------

            // Call function on window resize
            $(window).on('resize', barsResize);

            // Call function on sidebar width change
            $(document).on('click', '.sidebar-control', barsResize);

            // Resize function
            // 
            // Since D3 doesn't support SVG resize by default,
            // we need to manually specify parts of the graph that need to 
            // be updated on window resize
            function barsResize() {

                // Layout variables
                width = d3Container.node().getBoundingClientRect().width;


                // Layout
                // -------------------------

                // Main svg width
                container.attr('width', width);

                // Width of appended group
                svg.attr('width', width);

                // Horizontal range
                x.rangeBands([0, width], 0.3);


                // Chart elements
                // -------------------------

                // Bars
                svg.selectAll('.d3-random-bars')
                    .attr('width', x.rangeBand())
                    .attr('x', function(d,i) {
                        return x(i);
                    });
            }
        }
    };

    // Rounded progress charts
    var _RoundedProgressChart = function(element, radius, border, color, end, iconClass, textTitle, textAverage) {
        if (typeof d3 == 'undefined') {
            console.warn('Warning - d3.min.js is not loaded.');
            return;
        }

        // Initialize chart only if element exsists in the DOM
        if($(element).length > 0) {


            // Basic setup
            // ------------------------------

            // Main variables
            var d3Container = d3.select(element),
                startPercent = 0,
                iconSize = 32,
                endPercent = end,
                twoPi = Math.PI * 2,
                formatPercent = d3.format('.0%'),
                boxSize = radius * 2;

            // Values count
            var count = Math.abs((endPercent - startPercent) / 0.01);

            // Values step
            var step = endPercent < startPercent ? -0.01 : 0.01;



            // Create chart
            // ------------------------------

            // Add SVG element
            var container = d3Container.append('svg');

            // Add SVG group
            var svg = container
                .attr('width', boxSize)
                .attr('height', boxSize)
                .append('g')
                    .attr('transform', 'translate(' + (boxSize / 2) + ',' + (boxSize / 2) + ')');



            // Construct chart layout
            // ------------------------------

            // Arc
            var arc = d3.svg.arc()
                .startAngle(0)
                .innerRadius(radius)
                .outerRadius(radius - border);



            //
            // Append chart elements
            //

            // Paths
            // ------------------------------

            // Background path
            svg.append('path')
                .attr('class', 'd3-progress-background')
                .attr('d', arc.endAngle(twoPi))
                .style('fill', '#eee');

            // Foreground path
            var foreground = svg.append('path')
                .attr('class', 'd3-progress-foreground')
                .attr('filter', 'url(#blur)')
                .style('fill', color)
                .style('stroke', color);

            // Front path
            var front = svg.append('path')
                .attr('class', 'd3-progress-front')
                .style('fill', color)
                .style('fill-opacity', 1);



            // Text
            // ------------------------------

            // Percentage text value
            var numberText = d3.select(element)
                .append('h2')
                    .attr('class', 'pt-1 mt-2 mb-1')

            // Icon
            d3.select(element)
                .append('i')
                    .attr('class', iconClass + ' counter-icon')
                    .attr('style', 'top: ' + ((boxSize - iconSize) / 2) + 'px');

            // Title
            d3.select(element)
                .append('div')
                    .text(textTitle);

            // Subtitle
            d3.select(element)
                .append('div')
                    .attr('class', 'font-size-sm text-muted mb-3')
                    .text(textAverage);



            // Animation
            // ------------------------------

            // Animate path
            function updateProgress(progress) {
                foreground.attr('d', arc.endAngle(twoPi * progress));
                front.attr('d', arc.endAngle(twoPi * progress));
                numberText.text(formatPercent(progress));
            }

            // Animate text
            var progress = startPercent;
            (function loops() {
                updateProgress(progress);
                if (count > 0) {
                    count--;
                    progress += step;
                    setTimeout(loops, 10);
                }
            })();
        }
    };


    //
    // Return objects assigned to module
    //

    return {
        initComponents: function() {
            _componentSwitchery();
            _componentDaterange();
            _componentIconLetter();
        },
        initCharts: function() {

            // Sparklines
            _chartSparkline('#new-visitors', 'line', 30, 35, 'basis', 750, 2000, '#26A69A');
            _chartSparkline('#new-sessions', 'line', 30, 35, 'basis', 750, 2000, '#FF7043');
            _chartSparkline('#total-online', 'line', 30, 35, 'basis', 750, 2000, '#5C6BC0');
            _chartSparkline('#server-load', 'area', 30, 50, 'basis', 750, 2000, 'rgba(255,255,255,0.5)');

            // Streamgraph
            _TrafficSourcesStreamChart('#traffic-sources', 330);

            // Line charts
            _AppSalesLinesChart('#app_sales', 255);
            _DailyRevenueLineChart('#today-revenue', 50);

            // Area charts
            _MonthlySalesAreaChart('#monthly-sales-stats', 100, '#4DB6AC');
            _MessagesAreaChart('#messages-stats', 40, '#5C6BC0');

            // Progress charts
            _ProgressPieChart('#today-progress', 20, 20, '#7986CB');
            _ProgressPieChart('#yesterday-progress', 20, 20, '#7986CB');
            _RoundedProgressChart('#hours-available-progress', 38, 2, '#F06292', 0.68, 'icon-watch text-pink-400', 'Hours available', '64% average');
            _RoundedProgressChart('#goal-progress', 38, 2, '#5C6BC0', 0.82, 'icon-trophy3 text-indigo-400', 'Productivity goal', '87% average');

            // Donut charts
            _MarketingCampaignsDonutChart('#campaigns-donut', 42);
            _CampaignStatusDonutChart('#campaign-status-pie', 42);
            _TicketStatusDonutChart('#tickets-status', 42);

            // Bar charts
            _BarChart('#hours-available-bars', 24, 40, true, 'elastic', 1200, 50, '#EC407A', 'hours');
            _BarChart('#goal-bars', 24, 40, true, 'elastic', 1200, 50, '#5C6BC0', 'goal');
            _BarChart('#members-online', 24, 50, true, 'elastic', 1200, 50, 'rgba(255,255,255,0.5)', 'members');
        }
    }
}();


// Initialize module
// ------------------------------

document.addEventListener('DOMContentLoaded', function() {
    Dashboard.initComponents();
    Dashboard.initCharts();
});
