From 49cf77abc60370e9cec0fa2082a1ff81fc9c2bcc Mon Sep 17 00:00:00 2001
From: Daniel Smith <rdnlsmith@gmail.com>
Date: Fri, 17 May 2019 21:49:50 -0400
Subject: Add basic heart rate display

---
 app/index.js | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'app')

diff --git a/app/index.js b/app/index.js
index 6c8d4cc..cc64479 100644
--- a/app/index.js
+++ b/app/index.js
@@ -5,6 +5,8 @@ import * as fs from "fs";
 import * as messaging from "messaging";
 import { preferences } from "user-settings";
 import * as util from "./utils";
+import { HeartRateSensor } from "heart-rate";
+import { display } from "display";
 
 // const SETTINGS_TYPE = "cbor";
 // const SETTINGS_FILE = "settings.cbor";
@@ -23,6 +25,11 @@ let day = document.getElementById("day");
 let date1 = document.getElementById("date1");
 let date2 = document.getElementById("date2");
 
+// Heart Rate
+let hr1 = document.getElementById("hr1");
+let hr2 = document.getElementById("hr2");
+let hr3 = document.getElementById("hr3");
+
 clock.granularity = "seconds";
 
 clock.ontick = evt => {
@@ -50,6 +57,21 @@ clock.ontick = evt => {
   setMins(minute);
 }
 
+if (HeartRateSensor && me.permissions.granted("access_heart_rate")) {
+  let hrm = new HeartRateSensor({ frequency: 1 });
+  hrm.addEventListener("reading", () => {
+    setHeartRate(hrm.heartRate);
+  });
+  display.addEventListener("change", () => {
+    display.on ? hrm.start() : hrm.stop();
+  });
+  hrm.start();
+} else {
+  hr1.style.visibility = "hidden";
+  hr2.style.visibility = "hidden";
+  hr3.style.visibility = "hidden";
+}
+
 // Apply theme colors to elements
 function applyTheme(background, foreground) {
   let items = document.getElementsByClassName("background");
@@ -87,17 +109,27 @@ function setDay(val) {
   day.image = getDayImg(val);
 }
 
+function setHeartRate(val) {
+  drawDateDigit(val % 10, hr3);
+  val = Math.floor(val / 10);
+
+  drawDateDigit(val % 10, hr2);
+  val = Math.floor(val / 10);
+
+  drawDateDigit(val % 10, hr1);
+}
+
 function drawDigit(val, place) {
   place.image = `numerals/${val}.png`;
 }
 
 function drawDateDigit(val, place) {
-  place.image = `dates/${val}.png`
+  place.image = `quantifier/${val}.png`
 }
 
 function getDayImg(index) {
   let days = ["sun", "mon", "tue", "wed", "thu", "fri", "sat"];
-  return `dates/${days[index]}.png`;
+  return `quantifier/${days[index]}.png`;
 }
 
 // Listen for the onmessage event
-- 
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