Move karvonnen code into the run app

as discussed in https://forum.espruino.com/conversations/383175/#comment16875073

apps/run/app.js

@@ -1,16 +1,24 @@
-var ExStats = require("exstats");
+// Use widget utils to show/hide widgets
-var B2 = process.env.HWVERSION===2;
+let wu = require("widget_utils");
-var Layout = require("Layout");
-var locale = require("locale");
-var fontHeading = "6x8:2";
-var fontValue = B2 ? "6x15:2" : "6x8:3";
-var headingCol = "#888";
-var fixCount = 0;
-var isMenuDisplayed = false;
 
-g.clear();
+let runInterval;
+let karvonnenActive = false;
+// Run interface wrapped in a function
+//function run() {
+let ExStats = require("exstats");
+let B2 = process.env.HWVERSION===2;
+let Layout = require("Layout");
+let locale = require("locale");
+let fontHeading = "6x8:2";
+let fontValue = B2 ? "6x15:2" : "6x8:3";
+let headingCol = "#888";
+let fixCount = 0;
+let isMenuDisplayed = false;
+
+g.reset().clear();
 Bangle.loadWidgets();
 Bangle.drawWidgets();
+wu.show();
 
 // ---------------------------
 let settings = Object.assign({
@@ -37,14 +45,14 @@ let settings = Object.assign({
     },
   },
 }, require("Storage").readJSON("run.json", 1) || {});
-var statIDs = [settings.B1,settings.B2,settings.B3,settings.B4,settings.B5,settings.B6].filter(s=>s!=="");
+let statIDs = [settings.B1,settings.B2,settings.B3,settings.B4,settings.B5,settings.B6].filter(s=>s!=="");
-var exs = ExStats.getStats(statIDs, settings);
+let exs = ExStats.getStats(statIDs, settings);
 // ---------------------------
 
 // Called to start/stop running
 function onStartStop() {
-  var running = !exs.state.active;
+  let running = !exs.state.active;
-  var prepPromises = [];
+  let prepPromises = [];
 
   // start/stop recording
   // Do this first in case recorder needs to prompt for
@@ -86,11 +94,11 @@ function onStartStop() {
   });
 }
 
-var lc = [];
+let lc = [];
 // Load stats in pair by pair
-for (var i=0;i<statIDs.length;i+=2) {
+for (let i=0;i<statIDs.length;i+=2) {
-  var sa = exs.stats[statIDs[i+0]];
+  let sa = exs.stats[statIDs[i+0]];
-  var sb = exs.stats[statIDs[i+1]];
+  let sb = exs.stats[statIDs[i+1]];
   lc.push({ type:"h", filly:1, c:[
     sa?{type:"txt", font:fontHeading, label:sa.title.toUpperCase(), fillx:1, col:headingCol }:{},
     sb?{type:"txt", font:fontHeading, label:sb.title.toUpperCase(), fillx:1, col:headingCol }:{}
@@ -108,7 +116,7 @@ lc.push({ type:"h", filly:1, c:[
   {type:"txt", font:fontHeading, label:"STOP", id:"status", fillx:1 }
 ]});
 // Now calculate the layout
-var layout = new Layout( {
+let layout = new Layout( {
   type:"v", c: lc
 },{lazy:true, btns:[{ label:"START", cb: onStartStop, id:"button"}]});
 delete lc;
@@ -138,8 +146,156 @@ Bangle.on("GPS", function(fix) {
     Bangle.buzz(); // first fix, does not need to respect quiet mode
   }
 });
+
+// run() function used to switch between traditional run UI and karvonnen UI
+function run() {
+  if (karvonnenActive) g.reset().clear();
+  karvonnenActive = false;
+  wu.show();
+  layout.lazy = false;
+  layout.render();
+  layout.lazy = true;
   // We always call ourselves once a second to update
-setInterval(function() {
+  if (!runInterval){
+    runInterval = setInterval(function() {
+      print(runInterval);
       layout.clock.label = locale.time(new Date(),1);
-  if (!isMenuDisplayed) layout.render();
+      if (!isMenuDisplayed && !karvonnenActive) layout.render();
     }, 1000);
+  }
+}
+run();
+
+///////////////////////////////////////////////
+//                Karvonnen
+///////////////////////////////////////////////
+
+// Korvonnen pasted inside a function
+function karvonnen() {
+  // Attempt to stop listening to button
+  //clearWatch();
+  clearInterval(runInterval);
+  runInterval = undefined;
+  karvonnenActive = true;
+  //This app is an extra feature implementation for the Run.app of the bangle.js. It's called run+
+  //The calculation of the Heart Rate Zones is based on the Karvonnen method. It requires to know maximum and minimum heart rates. More precise calculation methods require a lab.
+  //Other methods are even more approximative.
+  wu.hide();
+  let R = Bangle.appRect;
+  
+  g.reset().clearRect(R);
+  
+  g.drawLine(40,64,88,52,136,64);
+  g.drawLine(88,52,136,64);
+  g.drawLine(40,112,88,124);
+  g.drawLine(88,124,132,112);
+  g.setFont("Vector",20);
+  
+  //To calculate Heart rate zones, we need to know the heart rate reserve (HRR)
+  // HRR = maximum HR - Minimum HR. minhr is minimum hr, maxhr is maximum hr.
+  //get the hrr (heart rate reserve).
+  // I put random data here, but this has to come as a menu in the settings section so that users can change it.
+  let minhr = 48;
+  let maxhr = 187;
+  
+  function calculatehrr(minhr, maxhr) {
+    return maxhr - minhr;}
+  
+  //test input for hrr (it works).
+  let hrr = calculatehrr(minhr, maxhr);
+  console.log(hrr);
+  
+  //Test input to verify the zones work. The following value for "hr" has to be deleted and replaced with the Heart Rate Monitor input.
+  let hr = 174;
+  let hr1 = hr;
+  // These letiables display next and previous HR zone.
+  //get the hrzones right. The calculation of the Heart rate zones here is based on the Karvonnen method
+  //60-70% of HRR+minHR = zone2. //70-80% of HRR+minHR = zone3. //80-90% of HRR+minHR = zone4. //90-99% of HRR+minHR = zone5. //=>99% of HRR+minHR = serious risk of heart attack
+  let minzone2 = hrr * 0.6 + minhr;
+  let maxzone2 = hrr * 0.7 + minhr;
+  let maxzone3 = hrr * 0.8 + minhr;
+  let maxzone4 = hrr * 0.9 + minhr;
+  let maxzone5 = hrr * 0.99 + minhr;
+  
+  // HR data: large, readable, in the middle of the screen
+  g.setFont("Vector",50);
+  g.drawString(hr1, 62,66);
+  //These functions call arcs to show different HR zones.
+  
+  //To shorten the code, I'll reference some letiables and reuse them.
+  let centreX = R.x + 0.5 * R.w; //g.getWidth();
+  let centreY = R.y + 0.5 * R.h; //g.getWidth();
+  let minRadius = 0.38 * R.h; //g.getWidth();
+  let maxRadius = 0.50 * R.h; //g.getWidth();
+  
+  //####### A function to simplify a bit the code ######
+  function simplify (sA, eA, Z) {
+  const zone= require("graphics_utils");
+  let startAngle = zone.degreesToRadians(sA);
+  let endAngle = zone.degreesToRadians(eA);
+  zone.fillArc(g, centreX, centreY, minRadius, maxRadius, startAngle, endAngle);
+  g.drawString(Z, 29,80);}
+  
+  //####### A function to simplify next&previous zones ######
+  function zoning (max, min) {
+  g.drawString(max, 56,28);g.drawString(min, 60,128);}
+  
+  //draw background image (dithered green zones)(I should draw different zones in different dithered colors)
+   const HRzones= require("graphics_utils");
+   let minRadiusz = 0.44 * g.getWidth();
+   let startAngle = HRzones.degreesToRadians(-88.5);
+   let endAngle = HRzones.degreesToRadians(268.5);
+   g.setColor("#002200");
+   HRzones.fillArc(g, centreX, centreY, minRadiusz, maxRadius, startAngle, endAngle);
+   g.setFont("Vector",24);
+  
+  function getzone1() {g.setColor("#00ffff");{(simplify (-88.5, -20, "Z1"));}zoning(minzone2, minhr);}
+  function getzone2a() {g.setColor("#00ff00");{(simplify (-43.5, -21.5, "Z2"));}zoning(maxzone2, minzone2);}
+  function getzone2b() {g.setColor("#00ff00");{(simplify (-20, 1.5, "Z2"));}zoning(maxzone2, minzone2);}
+  function getzone2c() {g.setColor("#00ff00");{(simplify (3, 24, "Z2"));}zoning(maxzone2, minzone2);}
+  function getzone3a() {g.setColor("#ffff00");{(simplify (25.5, 46.5, "Z3"));}zoning(maxzone3, maxzone2);}
+  function getzone3b() {g.setColor("#ffff00");{(simplify (48, 69, "Z3"));}zoning(maxzone3, maxzone2);}
+  function getzone3c() {g.setColor("#ffff00");{(simplify (70.5, 91.5, "Z3"));}zoning(maxzone3, maxzone2);}
+  function getzone4a() {g.setColor("#ff8000");{(simplify (91, 114.5, "Z4"));}zoning(maxzone4, maxzone3);}
+  function getzone4b() {g.setColor("#ff8000");{(simplify (116, 137.5, "Z4"));}zoning(maxzone4, maxzone3);}
+  function getzone4c() {g.setColor("#ff8000");{(simplify (139, 160, "Z4"));}zoning(maxzone4, maxzone3);}
+  function getzone5a() {g.setColor("#ff0000");{(simplify (161.5, 182.5, "Z5"));}zoning(maxzone5, maxzone4);}
+  function getzone5b() {g.setColor("#ff0000");{(simplify (184, 205, "Z5"));}zoning(maxzone5, maxzone4);}
+  function getzone5c() {g.setColor("#ff0000");{(simplify (206.5, 227.5, "Z5"));}zoning(maxzone5, maxzone4);}
+  
+  function getzonealert() {
+   const HRzonemax = require("graphics_utils");
+   let centreX1,centreY1,maxRadius1 = 1;
+   let minRadius = 0.40 * g.getWidth();
+   let startAngle1 = HRzonemax.degreesToRadians(-90);
+   let endAngle1 = HRzonemax.degreesToRadians(270);
+   g.setFont("Vector",38);g.setColor("#ff0000");
+   HRzonemax.fillArc(g, centreX, centreY, minRadius, maxRadius, startAngle1, endAngle1);
+   g.drawString("ALERT", 26,66);
+  }
+  //Subdivided zones for better readability of zones when calling the images. //Changing HR zones will trigger the function with the image and previous&next HR zones.
+  
+    if (hr <= hrr*0.6 + minhr) {(getzone1());
+  } else if (hr <= hrr*0.64 + minhr) {(getzone2a());
+  } else if (hr <= hrr*0.67+minhr) {(getzone2b());
+  } else if (hr <= hrr * 0.7 + minhr) {(getzone2c());
+  } else if (hr <= hrr * 0.74 + minhr) {(getzone3a());
+  } else if (hr <= hrr * 0.77 + minhr) {(getzone3b());
+  } else if (hr <= hrr * 0.8 + minhr) {(getzone3c());
+  } else if (hr <= hrr * 0.84 + minhr) {(getzone4a());
+  } else if (hr <= hrr * 0.87 + minhr) {(getzone4b());
+  } else if (hr <= hrr * 0.9 + minhr) {(getzone4c());
+  } else if (hr <= hrr * 0.94 + minhr) {(getzone5a());
+  } else if (hr <= hrr * 0.96 + minhr) {(getzone5b());
+  } else if (hr <= hrr * 0.98 + minhr) {(getzone5c());
+  } else if (hr >= maxhr - 2) {g.clear();(getzonealert());}
+}
+
+// Define the function to go back and foth between the different UI's
+function swipeHandler(LR,_) {
+  if (LR==-1 && karvonnenActive && !isMenuDisplayed) run();
+  if (LR==1 && !karvonnenActive && !isMenuDisplayed) karvonnen();
+}
+
+// Listen for swipes with the swipeHandler
+Bangle.on("swipe", swipeHandler);