Add "Clients (over time)" graph (needs FTL on branch "new/clientsovertime")

scripts/pi-hole/js/index.js

@@ -7,7 +7,7 @@
 // Define global variables
 /* global Chart */
 var timeLineChart, queryTypeChart, forwardDestinationChart;
-var queryTypePieChart, forwardDestinationPieChart;
+var queryTypePieChart, forwardDestinationPieChart, clientsChart;
 
 function padNumber(num) {
     return ("00" + num).substr(-2,2);
@@ -261,6 +261,86 @@ function updateForwardedOverTime() {
     });
 }
 
+
+function updateClientsOverTime() {
+    $.getJSON("api.php?overTimeDataClients&getClientNames", function(data) {
+
+        if("FTLnotrunning" in data)
+        {
+            return;
+        }
+
+        // convert received objects to arrays
+        data.over_time = objectToArray(data.over_time);
+        var timestamps = data.over_time[0];
+        var plotdata  = data.over_time[1];
+        var labels = [];
+        var key, i, j;
+        for (key in data.clients)
+        {
+            if (!{}.hasOwnProperty.call(data.clients, key)) continue;
+            if(key.indexOf("|") > -1)
+            {
+                var idx = key.indexOf("|");
+                key = key.substr(0, idx);
+            }
+            labels.push(key);
+        }
+        // Get colors from AdminLTE
+        var colors = [];
+        $.each($.AdminLTE.options.colors, function(key, value) { colors.push(value); });
+        var v = [], c = [], k = [];
+
+        // Remove possibly already existing data
+        clientsChart.data.labels = [];
+        clientsChart.data.datasets[0].data = [];
+        for (i = 1; i < clientsChart.data.datasets.length; i++)
+        {
+            clientsChart.data.datasets[i].data = [];
+        }
+
+        // Collect values and colors, and labels
+        clientsChart.data.datasets[0].backgroundColor = colors[0];
+        clientsChart.data.datasets[0].pointRadius = 0;
+        clientsChart.data.datasets[0].pointHitRadius = 5;
+        clientsChart.data.datasets[0].pointHoverRadius = 5;
+        clientsChart.data.datasets[0].label = labels[0];
+
+        for (i = clientsChart.data.datasets.length; i < plotdata[0].length; i++)
+        {
+            clientsChart.data.datasets.push({data: [], backgroundColor: colors[i], pointRadius: 0, pointHitRadius: 5, pointHoverRadius: 5, label: labels[i]});
+        }
+
+        // Add data for each dataset that is available
+        for (j in timestamps)
+        {
+            if (!{}.hasOwnProperty.call(timestamps, j)) continue;
+            for (key in plotdata[j])
+            {
+                if (!{}.hasOwnProperty.call(plotdata[j], key)) continue;
+                clientsChart.data.datasets[key].data.push(1e-2*plotdata[j][key]);
+            }
+
+            var d = new Date(1000*parseInt(timestamps[j]));
+            clientsChart.data.labels.push(d);
+        }
+        $("#clients .overlay").hide();
+        clientsChart.update();
+    }).done(function() {
+        // Reload graph after 10 minutes
+        failures = 0;
+        setTimeout(updateClientsOverTime, 600000);
+    }).fail(function() {
+        failures++;
+        if(failures < 5)
+        {
+            // Try again after 1 minute only if this has not failed more
+            // than five times in a row
+            setTimeout(updateClientsOverTime, 60000);
+        }
+    });
+}
+
 function updateForwardDestinationsPie() {
     $.getJSON("api.php?getForwardDestinations=unsorted", function(data) {
 
@@ -625,6 +705,69 @@ $(document).ready(function() {
     {
         ctx = document.getElementById("forwardDestinationChart").getContext("2d");
         forwardDestinationChart = new Chart(ctx, {
+            type: "line",
+            data: {
+                labels: [],
+                datasets: [{ data: [] }]
+            },
+            options: {
+                tooltips: {
+                    enabled: true,
+                    mode: "x-axis",
+                    callbacks: {
+                        title: function(tooltipItem, data) {
+                            var label = tooltipItem[0].xLabel;
+                            var time = label.match(/(\d?\d):?(\d?\d?)/);
+                            var h = parseInt(time[1], 10);
+                            var m = parseInt(time[2], 10) || 0;
+                            var from = padNumber(h)+":"+padNumber(m-5)+":00";
+                            var to = padNumber(h)+":"+padNumber(m+4)+":59";
+                            return "Client activity from "+from+" to "+to;
+                        },
+                        label: function(tooltipItems, data) {
+                            return data.datasets[tooltipItems.datasetIndex].label + ": " + (100.0*tooltipItems.yLabel).toFixed(1) + "%";
+                        }
+                    }
+                },
+                legend: {
+                    display: false
+                },
+                scales: {
+                    xAxes: [{
+                        type: "time",
+                        time: {
+                            unit: "hour",
+                            displayFormats: {
+                                hour: "HH:mm"
+                            },
+                            tooltipFormat: "HH:mm"
+                        }
+                    }],
+                    yAxes: [{
+                        ticks: {
+                            mix: 0.0,
+                            max: 1.0,
+                            beginAtZero: true,
+                            callback: function(value, index, values) {
+                                return Math.round(value*100) + " %";
+                            }
+                        },
+                        stacked: true
+                    }]
+                },
+                maintainAspectRatio: true
+            }
+        });
+
+        // Pull in data via AJAX
+        updateClientsOverTime();
+    }
+
+    // Create / load "Top Clients over Time" only if authorized
+    if(document.getElementById("clientsChart"))
+    {
+        ctx = document.getElementById("clientsChart").getContext("2d");
+        clientsChart = new Chart(ctx, {
             type: "line",
             data: {
                 labels: [],