From 47575f0f809ced9eff24e6a958f0f505324012d0 Mon Sep 17 00:00:00 2001
From: sebi <sebastien.krut@gmail.com>
Date: Mon, 9 Mar 2020 13:24:38 +0100
Subject: [PATCH] New heart rate recorder app

---
 apps.json                    |  14 ++++
 apps/heart/ChangeLog         |   2 +
 apps/heart/app-icon.js       |   1 +
 apps/heart/app-settings.json |   4 +
 apps/heart/app.js            | 100 +++++++++++++++++++++++
 apps/heart/app.png           | Bin 0 -> 883 bytes
 apps/heart/interface.html    | 149 +++++++++++++++++++++++++++++++++++
 apps/heart/widget.js         |  50 ++++++++++++
 8 files changed, 320 insertions(+)
 create mode 100644 apps/heart/ChangeLog
 create mode 100644 apps/heart/app-icon.js
 create mode 100644 apps/heart/app-settings.json
 create mode 100644 apps/heart/app.js
 create mode 100644 apps/heart/app.png
 create mode 100644 apps/heart/interface.html
 create mode 100644 apps/heart/widget.js

diff --git a/apps.json b/apps.json
index b078ea6ae..eb2644df9 100644
--- a/apps.json
+++ b/apps.json
@@ -261,6 +261,20 @@
       {"name":"gpsrec.wid.js","url":"widget.js"}
     ]
   },
+  { "id": "heart",
+    "name": "Heart Rate Recorder",
+    "icon": "app.png",
+    "version":"0.01",
+    "interface": "interface.html",
+    "description": "Application that allows you to record your heart rate. Can run in background",
+    "tags": "tool,health,widget",
+    "storage": [
+      {"name":"heart.app.js","url":"app.js"},
+      {"name":"heart.json","url":"app-settings.json","evaluate":true},
+      {"name":"heart.img","url":"app-icon.js","evaluate":true},
+      {"name":"heart.wid.js","url":"widget.js"}
+    ]
+  },
   { "id": "slevel",
     "name": "Spirit Level",
     "icon": "spiritlevel.png",
diff --git a/apps/heart/ChangeLog b/apps/heart/ChangeLog
new file mode 100644
index 000000000..4c4db83bc
--- /dev/null
+++ b/apps/heart/ChangeLog
@@ -0,0 +1,2 @@
+0.01: New App!
+
diff --git a/apps/heart/app-icon.js b/apps/heart/app-icon.js
new file mode 100644
index 000000000..a7f67291e
--- /dev/null
+++ b/apps/heart/app-icon.js
@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("mEwwhC/AH4AWzIAByAHDhIICCpINDDAgIIFpAADBBQuKE4QIIFxgAKC7g9HABSbIBQQXWGxgXEKQxOMC5AhBC66WMC5AuBJ5h3ICoI3LeAwKBBAICBD4TmHC48ACgQCCfxC/HAgYXDL44vFA4YRDAoiOIHAgXFYRAXFBwwIIOw4OGIxKmIC5ylHGAoXIXpBIGLxxIIIx6IJFxwwNCxQwLFxYwLCxgwJFxowJCxwwHFx4wHCyAwFFyIwFCyQYDCygA/AH4AFA"))
\ No newline at end of file
diff --git a/apps/heart/app-settings.json b/apps/heart/app-settings.json
new file mode 100644
index 000000000..d57d970d0
--- /dev/null
+++ b/apps/heart/app-settings.json
@@ -0,0 +1,4 @@
+{
+  "isRecording":false,
+  "fileNbr":0
+}
diff --git a/apps/heart/app.js b/apps/heart/app.js
new file mode 100644
index 000000000..366a1068d
--- /dev/null
+++ b/apps/heart/app.js
@@ -0,0 +1,100 @@
+Bangle.loadWidgets();
+Bangle.drawWidgets();
+
+var settings = require("Storage").readJSON("heart.json",1)||{};
+
+function getFileNbr(n) {
+  return ".heart"+n.toString(36);
+}
+
+function updateSettings() {
+  require("Storage").write("heart.json", settings);
+  if (WIDGETS["heart"])
+    WIDGETS["heart"].reload();
+}
+
+function showMainMenu() {
+  const mainMenu = {
+    '': { 'title': 'Heart Recorder' },
+    'RECORD': {
+      value: !!settings.isRecording,
+      format: v=>v?"On":"Off",
+      onchange: v => {
+        settings.isRecording = v;
+        updateSettings();
+      }
+    },
+    'File Number': {
+      value: settings.fileNbr|0,
+      min: 0,
+      max: 35,
+      step: 1,
+      onchange: v => {
+        settings.isRecording = false;
+        settings.fileNbr = v;
+        updateSettings();
+      }
+    },
+    'View Records': viewRecords,
+    '< Back': ()=>{load();}
+  };
+  return E.showMenu(mainMenu);
+}
+
+function viewRecords() {
+  const menu = {
+    '': { 'title': 'Heart Records' }
+  };
+  var found = false;
+  for (var n=0;n<36;n++) {
+    var f = require("Storage").open(getFileNbr(n),"r");
+    if (f.readLine()!==undefined) {
+      menu["Record "+n] = viewRecord.bind(null,n);
+      found = true;
+    }
+  }
+  if (!found)
+    menu["No Records Found"] = function(){};
+  menu['< Back'] = showMainMenu;
+  return E.showMenu(menu);
+}
+
+function viewRecord(n) {
+  const menu = {
+    '': { 'title': 'Heart Record '+n }
+  };
+  var heartCount = 0;
+  var heartTime;
+  var f = require("Storage").open(getFileNbr(n),"r");
+  var l = f.readLine();
+  if (l!==undefined) {
+    var c = l.split(",");
+    heartTime = new Date(c[0]*1000);
+  }
+  while (l!==undefined) {
+    heartCount++;
+    // TODO: min/max/average of heart rate?
+    l = f.readLine();
+  }
+  if (heartTime)
+    menu[" "+heartTime.toString().substr(4,17)] = function(){};
+  menu[heartCount+" records"] = function(){};
+  // TODO: option to draw it? Just scan through, project using min/max
+  menu['Erase'] = function() {
+    E.showPrompt("Delete Record?").then(function(v) {
+      if (v) {
+        settings.isRecording = false;
+        updateSettings();
+        var f = require("Storage").open(getFileNbr(n),"r");
+        f.erase();
+        viewRecords();
+      } else
+        viewRecord(n);
+    });
+  };
+  menu['< Back'] = viewRecords;
+  print(menu);
+  return E.showMenu(menu);
+}
+
+showMainMenu();
diff --git a/apps/heart/app.png b/apps/heart/app.png
new file mode 100644
index 0000000000000000000000000000000000000000..72b2805b860448283e7888c0bbd0c81b1d3866b4
GIT binary patch
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diff --git a/apps/heart/interface.html b/apps/heart/interface.html
new file mode 100644
index 000000000..7d56e8461
--- /dev/null
+++ b/apps/heart/interface.html
@@ -0,0 +1,149 @@
+<html>
+  <head>
+    <link rel="stylesheet" href="../../css/spectre.min.css">
+  </head>
+  <body>
+    <div id="records"></div>
+
+    <div class="modal active" id="status-modal">
+      <div class="modal-overlay"></div>
+      <div class="modal-container">
+        <div class="modal-header">
+          <div class="modal-name h5">Please wait</div>
+        </div>
+        <div class="modal-body">
+          <div class="content">
+            Loading...
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <script src="../../lib/interface.js"></script>
+    <script>
+var domRecords = document.getElementById("records");
+var domModal = document.getElementById("status-modal");
+
+function showModal(name) {
+  domModal.querySelector(".content").innerHTML = name;
+  domModal.classList.add("active");
+}
+function hideModal(name) {
+  domModal.classList.remove("active");
+}
+
+function saveRecord(record,name) {
+  var csv = `${record.map(rec=>[rec.time, rec.bpm, rec.confidence].join(",")).join("\n")}`;
+  var a = document.createElement("a"),
+      file = new Blob([csv], {type: "Comma-separated value file"});
+  var url = URL.createObjectURL(file);
+  a.href = url;
+  a.download = name+".csv";
+  document.body.appendChild(a);
+  a.click();
+  setTimeout(function() {
+      document.body.removeChild(a);
+      window.URL.revokeObjectURL(url);
+  }, 0);
+}
+
+
+function recordLineToObject(l, hasRecordNbr) {
+  var t = l.trim().split(",");
+  var n = hasRecordNbr?1:0;
+  var o = {
+    time: parseInt(t[n+0]),
+    bpm: parseFloat(t[n+1]),
+    confidence: parseFloat(t[n+2]),
+  };
+  if (hasRecordNbr)
+    o.number = t[0];
+  return o;
+}
+
+function downloadRecord(recordNbr, callback) {
+  showModal("Downloading heart rate record...");
+  Puck.write(`\x10(function() {
+    var f = require("Storage").open(".heart${recordNbr.toString(36)}","r");
+    var l = f.readLine();
+    while (l!==undefined) { Bluetooth.print(l); l = f.readLine(); }
+  })()\n`,recordList=>{
+    hideModal();
+    var record = recordList.trim().split("\n").map(l=>recordLineToObject(l,false));
+    callback(record);
+  });
+}
+
+function getRecordList() {
+  showModal("Loading heart rate records...");
+  domRecords.innerHTML = "";
+  Puck.write(`\x10(function() {
+    for (var n=0;n<36;n++) {
+      var f = require("Storage").open(".heart"+n.toString(36),"r");
+      var l = f.readLine();
+      if (l!==undefined)
+        Bluetooth.println(n+","+l.trim());
+    }
+  })()\n`,recordList=>{
+    var recordLines = recordList.trim().split("\n");
+    var html = `<div class="container">
+  <div class="columns">\n`;
+    recordLines.forEach(l => {
+      var record = recordLineToObject(l, true /*has record number*/);
+      html += `
+        <div class="column col-12">
+          <div class="card-header">
+            <div class="card-title h5">Heart Rate Record ${record.number}</div>
+            <div class="card-subtitle text-gray">${(new Date(record.time*1000)).toString().substr(0,24)}</div>
+          </div>
+          <div class="card-body"></div>
+          <div class="card-footer">
+            <button class="btn btn-primary" recordNbr="${record.number}" task="download">Download</button>
+            <button class="btn btn-default" recordNbr="${record.number}" task="delete">Delete</button>
+          </div>
+        </div>
+      `;
+    });
+    if (recordLines.length==0) {
+      html += `
+        <div class="column col-12">
+          <div class="card-header">
+            <div class="card-title h5">No record</div>
+            <div class="card-subtitle text-gray">No heart rate record found</div>
+          </div>
+        </div>
+        `;
+    }
+    html += `
+    </div>
+  </div>`;
+    domRecords.innerHTML = html;
+    hideModal();
+    var buttons = domRecords.querySelectorAll("button");
+    for (var i=0;i<buttons.length;i++) {
+      buttons[i].addEventListener("click",event => {
+        var button = event.currentTarget;
+        var recordNbr = button.getAttribute("recordNbr");
+        var task = button.getAttribute("task");
+        if (task=="delete") {
+          showModal("Deleting record...");
+          Puck.write(`\x10require("Storage").open(".heart${recordNbr.toString(36)}","r").erase()\n`,()=>{
+            hideModal();
+            getRecordList();
+          });
+        }
+        if (task=="download") {
+          downloadRecord(recordNbr, record => saveRecord(record, `HeartRateRecord${recordNbr}`));
+        }
+      });
+    }
+  })
+}
+
+function onInit() {
+  getRecordList();
+}
+
+    </script>
+  </body>
+</html>
diff --git a/apps/heart/widget.js b/apps/heart/widget.js
new file mode 100644
index 000000000..7d46aa239
--- /dev/null
+++ b/apps/heart/widget.js
@@ -0,0 +1,50 @@
+(() => {
+  var settings = {};
+  var hrmToggle = true; // toggles once for each reading
+  var recFile; // file for heart rate recording
+
+  // draw your widget
+  function draw() {
+    if (!settings.isRecording) return;
+    g.reset();
+    g.setFontAlign(0,0);
+    g.clearRect(this.x,this.y,this.x+23,this.y+23);
+    g.setColor(hrmToggle?"#ff0000":"#ff8000");
+    g.fillCircle(this.x+6,this.y+6,4); // draw heart left circle
+    g.fillCircle(this.x+16,this.y+6,4); // draw heart right circle
+    g.fillPoly([this.x+2,this.y+8,this.x+20,this.y+8,this.x+11,this.y+18]); // draw heart bottom triangle
+    g.setColor(-1); // change color back to be nice to other apps
+  }
+
+  function onHRM(hrm) {
+    hrmToggle = !hrmToggle;
+    WIDGETS["heart"].draw();
+    if (recFile) recFile.write([getTime().toFixed(0),hrm.bpm,hrm.confidence].join(",")+"\n");
+  }
+
+  // Called by the heart app to reload settings and decide what's
+  function reload() {
+    settings = require("Storage").readJSON("heart.json",1)||{};
+    settings.fileNbr |= 0;
+
+    Bangle.removeListener('HRM',onHRM);
+    if (settings.isRecording) {
+      WIDGETS["heart"].width = 24;
+      Bangle.on('HRM',onHRM);
+      Bangle.setHRMPower(1);
+      var n = settings.fileNbr.toString(36);
+      recFile = require("Storage").open(".heart"+n,"a");
+    } else {
+      WIDGETS["heart"].width = 0;
+      Bangle.setHRMPower(0);
+      recFile = undefined;
+    }
+  }
+  // add the widget
+  WIDGETS["heart"]={area:"tl",width:24,draw:draw,reload:function() {
+    reload();
+    Bangle.drawWidgets(); // relayout all widgets
+  }};
+  // load settings, set correct widget width
+  reload();
+})()