Add bar graphs

apps/health/README.md

@@ -49,3 +49,7 @@ and run `EspruinoDocs/bin/minify.js lib.js lib.min.js`
   * Yearly view
   * Heart rate 'zone' graph
   * .. other
+
+## License
+
+The graphs on the web interface use Chart.js, licensed under MIT License.

apps/health/interface.html

@@ -6,6 +6,7 @@
     <div id="content"></div>
 
     <script src="../../core/lib/interface.js"></script>
+    <script type="module" src="chart.min.js"></script>
     <script>
 const DB_RECORD_LEN = 4;
 const DB_RECORDS_PER_HR = 6;
@@ -83,7 +84,8 @@ function getMonthList() {
         <td>${f.str}</td>
         <td>
           <button class="btn btn-primary" filename="${f.filename}" date="${f.date}" task="downloadcsv">Download CSV</button>
-          <button class="btn btn-primary" filename="${f.filename}" date="${f.date}" task="viewmonth">View</button>
+          <button class="btn btn-primary" filename="${f.filename}" date="${f.date}" monthstr="${f.str}" task="monthtable">Table</button>
+          <button class="btn btn-primary" filename="${f.filename}" date="${f.date}" monthstr="${f.str}" task="monthgraph">Graph</button>
           <button class="btn btn-error" filename="${f.filename}" date="${f.date}" task="delete" style="float: right;margin-right: 5px;">Delete</button>
         </td>
       </tr>
@@ -109,6 +111,7 @@ function getMonthList() {
         var filename = button.getAttribute("filename");
         var date = button.getAttribute("date");
         if (!filename || !date) return;
+        var monthstr = button.getAttribute("monthstr");
         var task = button.getAttribute("task");
         if (task=="delete") {
           Util.showModal("Deleting...");
@@ -120,21 +123,56 @@ function getMonthList() {
         if (task=="downloadcsv") {
           downloadHealth(filename, data => saveCSV(data, date, `Bangle.js Health ${date}`));
         }
-        if (task=="viewmonth") {
-          viewMonthlyData(filename, date);
+        if (task=="monthtable") {
+          viewMonthDataAsTable(filename, date, monthstr);
+        }
+        if (task=="monthgraph") {
+          viewMonthDataAsGraph(filename, date, monthstr);
         }
       });
     }
   })
 }
 
-function viewMonthlyData(filename, date) {
-Util.showModal("Reading Health info...");
-Util.readStorage(
+function getDailyData(data) {
+  var dailyData = [];
+  var idx = DB_HEADER_LEN;
+  for (var day = 0; day < 31; day++) {
+    var dayData = {steps: 0, bpm: 0, movement: 0};
+    for (var hr = 0; hr < 24; hr++) { // actually 25, see below
+      for (var m = 0; m < DB_RECORDS_PER_HR; m++) {
+        var h = data.substr(idx, DB_RECORD_LEN);
+        if (h != "\xFF\xFF\xFF\xFF") {
+          var h = {
+            day : day + 1,
+            hr : hr,
+            min : m * 10,
+            steps : (h.charCodeAt(0) << 8) | h.charCodeAt(1),
+            bpm : h.charCodeAt(2),
+            movement : h.charCodeAt(3)
+          };
+          dayData.steps += h.steps; // sum
+          dayData.bpm = (dayData.bpm + h.bpm) / 2; // average
+          dayData.movement += h.movement; // sum
+        }
+        idx += DB_RECORD_LEN;
+      }
+    }
+    idx += DB_RECORD_LEN; // +1 because we have an extra record with totals
+                          // for the end of the day
+                          
+    dailyData[day + 1] = dayData;
+   }
+   return dailyData;
+}
+
+function viewMonthDataAsTable(filename, date, monthstr) {
+  Util.showModal("Reading Health info...");
+  Util.readStorage(
     filename, data => {
       Util.hideModal();
       
-      var htmlOverview = `<h1> Month ` + date + `: </ h1>
+      var htmlOverview = `<h1>` + monthstr + `</ h1>
       <button class="btn btn-primary" id="backtomonth" style="float: right;margin-right: 5px;">Back</button>
       <table class="table table-striped table-hover">
       <thead>
@@ -147,36 +185,16 @@ Util.readStorage(
       </thead>
       <tbody>\n`;
 
-      var idx = DB_HEADER_LEN;
-      for (var day = 0; day < 31; day++) {
-        var dayData = {steps: 0, bpm: 0, movement: 0};
-        for (var hr = 0; hr < 24; hr++) { // actually 25, see below
-          for (var m = 0; m < DB_RECORDS_PER_HR; m++) {
-            var h = data.substr(idx, DB_RECORD_LEN);
-            if (h != "\xFF\xFF\xFF\xFF") {
-              var h = {
-                day : day + 1,
-                hr : hr,
-                min : m * 10,
-                steps : (h.charCodeAt(0) << 8) | h.charCodeAt(1),
-                bpm : h.charCodeAt(2),
-                movement : h.charCodeAt(3)
-              };
-              dayData.steps += h.steps; // sum
-              dayData.bpm = (dayData.bpm + h.bpm) / 2; // average
-              dayData.movement += h.movement; // sum
-            }
-            idx += DB_RECORD_LEN;
+       var dailyData = getDailyData(data);
+       for (var i = 1; i < dailyData.length + 1; i++) {
+          var dayData = dailyData[i];
+          if (dayData) {
+            htmlOverview += `<tr>
+            <td>${i}</td>
+            <td>${dayData.steps}</td>
+            <td>${Math.round(dayData.bpm)}</td>
+            <td>${dayData.movement}</td></tr>`
           }
-        }
-        idx += DB_RECORD_LEN; // +1 because we have an extra record with totals
-                              // for the end of the day
-                              
-        htmlOverview += `<tr>
-                <td>${day + 1}</td>
-                <td>${dayData.steps}</td>
-                <td>${Math.round(dayData.bpm)}</td>
-                <td>${dayData.movement}</td></tr>`
       }
       htmlOverview += `</tbody></table>`;
       domContent.innerHTML = htmlOverview;
@@ -186,6 +204,98 @@ Util.readStorage(
     });
 }
 
+function viewMonthDataAsGraph(filename, date, monthstr) {
+  Util.showModal("Reading Health info...");
+  Util.readStorage(
+    filename, data => {
+      Util.hideModal();
+      
+      var html = `<h1>` + monthstr + `</ h1>
+      <button class="btn btn-primary" id="backtomonth" style="float: right;margin-right: 5px;">Back</button>
+      <h2>Steps</h2>
+      <canvas id="chartSteps"></canvas>
+      <h2>BPM</h2>
+      <canvas id="chartBPM"></canvas>
+      <h2>Movement</h2>
+      <canvas id="chartMovement"></canvas>`
+      domContent.innerHTML = html;
+       domContent.querySelector("#backtomonth").addEventListener("click",event => {
+         getMonthList();
+      });
+      
+      var labels = [];
+      var dataSteps = [], dataBPM = [], dataMovement = [];
+      
+      var dailyData = getDailyData(data);
+      for (var i = 1; i < dailyData.length + 1; i++) {
+         var dayData = dailyData[i];
+         if (dayData) {
+           labels.push(i);
+           dataSteps.push(dayData.steps);
+           dataBPM.push(dayData.bpm);
+           dataMovement.push(dayData.movement);
+        }
+      }
+      
+      new Chart(document.getElementById("chartSteps"), {
+          type: 'bar',
+          data: {
+            labels: labels,
+            datasets: [{
+              label: '# of steps',
+              data: dataSteps,
+              borderWidth: 1
+            }]
+          },
+          options: {
+            scales: {
+              y: {
+                beginAtZero: true
+              }
+            }
+          }
+        });
+        
+       new Chart(document.getElementById("chartBPM"), {
+          type: 'bar',
+          data: {
+            labels: labels,
+            datasets: [{
+              label: 'Beats per minute',
+              data: dataBPM,
+              borderWidth: 1
+            }]
+          },
+          options: {
+            scales: {
+              y: {
+                beginAtZero: true
+              }
+            }
+          }
+        });
+        
+       new Chart(document.getElementById("chartMovement"), {
+          type: 'bar',
+          data: {
+            labels: labels,
+            datasets: [{
+              label: 'Movement',
+              data: dataMovement,
+              borderWidth: 1
+            }]
+          },
+          options: {
+            scales: {
+              y: {
+                beginAtZero: true
+              }
+            }
+          }
+        });
+    });
+}
+
 function onInit() {
   getMonthList();
 }