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Legacy worker
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@jplomas
jplomas committed May 12, 2024
1 parent 8470074 commit c4620e0
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Showing 7 changed files with 2,809 additions and 75 deletions.
347 changes: 342 additions & 5 deletions dist/calc.cjs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,336 @@
'use strict';

class Legacy {
constructor(v) {
if (v === '1.0.0') {
this.version = 100;
return;
}
// default to null
this.version = null;
}
startingRate(passedValue) {
if (this.version === 100) {
return this.startingRate100(passedValue);
}
return false;
}
ongoingRate(passedCurrent, passedPrevious, passedRate) {
if (this.version === 100) {
return this.ongoingRate100(passedCurrent, passedPrevious, passedRate);
}
return false;
}
ongoingRate100(passedCurrent, passedPrevious, passedRate) {
const r = {
rateNum: 0,
rate: '',
advice: { text: [''], type: '' },
hex: '',
};
if (
Number.isNaN(parseFloat(passedCurrent)) ||
Number.isNaN(parseFloat(passedPrevious)) ||
Number.isNaN(parseFloat(passedRate))
) {
return false;
}
const current = parseFloat(passedCurrent);
const previous = parseFloat(passedPrevious);
const rate = parseFloat(passedRate);
let A11 = 'LOGIC ERROR';
if (current <= 2.2) {
A11 = '1';
}
if (current >= 2.3 && current <= 4) {
A11 = '2';
}
if (current >= 4.1 && current < 6.1 && previous <= 6) {
A11 = '3';
}
if (current >= 4.1 && current < 6.1 && previous > 6 && current - previous < -1.5) {
A11 = '2';
}
if (current >= 4.1 && current < 6.1 && previous > 6 && current - previous >= -1.5 && current - previous < 0) {
A11 = '3';
}
if (current >= 6.1 && current < 8 && rate < 1.5) {
A11 = '29';
}
if (current >= 6.1 && current < 8 && rate > 1.5) {
A11 = '53';
}
if ((current >= 8 && current < 10.1) || (previous < 8 && previous > 10)) {
A11 = '10';
}
if (current >= 8 && current < 10.1 && previous >= 8 && previous <= 10) {
A11 = '54';
}
if (current >= 10.1 && current < 12.1 && previous <= 12 && current - previous < 0) {
A11 = '17';
}
if (current >= 10.1 && current < 12.1 && previous <= 12 && current - previous >= 0) {
A11 = '36';
}
if (current >= 10.1 && current < 12.1 && previous > 12 && current - previous < 0 && current - previous >= -2) {
A11 = '32';
}
if (current >= 10.1 && current < 12.1 && previous > 12 && current - previous < -2) {
A11 = '33';
}
if (current >= 12.1 && current <= 14 && previous < 12.1) {
A11 = '34';
}
if (current >= 12.1 && current <= 14 && previous >= 12.1 && previous <= 14 && current - previous >= 0) {
A11 = '35';
}
if (
current >= 12.1 &&
current <= 14 &&
previous >= 12.2 &&
previous <= 14.4 &&
current - previous < 0 &&
current - previous >= -1
) {
A11 = '35';
}
if (
current >= 12.1 &&
current <= 14 &&
previous >= 13.2 &&
previous <= 18 &&
current - previous <= -0.5 &&
current - previous >= -3.9
) {
A11 = '37';
}
if (current >= 12.1 && current <= 14 && previous >= 16.1 && previous <= 18 && current - previous <= -4) {
A11 = '33';
}
if (current >= 12.1 && current <= 14 && previous > 18) {
A11 = '33';
}
if (current > 14 && previous < 12.1) {
A11 = '38';
}
if (current > 14 && previous >= 12.1 && previous <= 14) {
A11 = '34';
}
if (current > 14 && previous > 14 && current - previous > 0) {
A11 = '38';
}
if (current > 14 && previous > 14 && current - previous <= 0 && current - previous >= -1.9) {
A11 = '34';
}
if (current > 14 && previous > 14 && current - previous < -1.9 && current - previous > -4) {
A11 = '18';
}
if (current > 14 && previous > 14 && current - previous <= -4) {
A11 = '33';
}
let newR = -1;
if (A11 === '1') {
newR = 0;
}
if (A11 === '2') {
newR = 0;
}
if (A11 === '3') {
newR = 0;
}
if (A11 === '10') {
newR = rate * (current / previous);
}
if (A11 === '17') {
newR = rate;
}
if (A11 === '18') {
newR = rate;
}
if (A11 === '29') {
newR = 0;
}
if (A11 === '32') {
newR = rate;
}
if (A11 === '33') {
newR = rate * (current / previous);
}
if (A11 === '34') {
newR = rate + 2;
}
if (A11 === '35') {
newR = rate + 1;
}
if (A11 === '36') {
newR = rate + 1;
}
if (A11 === '37') {
newR = rate;
}
if (A11 === '38') {
newR = rate + 2 * (current / previous);
}
if (A11 === '53') {
newR = rate * 0.5;
}
if (A11 === '54') {
newR = rate;
}
newR = Math.round(newR * 10) / 10;
if (newR > 18) {
newR = 18;
}
const result = `${newR}ml/hr`;
r.rate = result;
r.rateNum = newR;
if (A11 === '1') {
r.advice = {
type: 'additional',
text: [
'STOP INSULIN FOR AT LEAST 1 HOUR',
'Follow hypoglycaemia protocol.',
'Give IV dextrose immediately & ensure background nutrition or glucose intake.',
'Recheck blood glucose in 15, 30 and 60 minutes until stable.',
],
};
}
if (A11 === '2') {
r.advice = {
type: 'additional',
text: [
'STOP INSULIN FOR AT LEAST 1 HOUR',
'Give IV dextrose immediately if blood glucose < 4mmol/L & ensure background nutrition or glucose intake.',
' If blood glucose is greater than 4mmol/l then it is falling rapidly. Recheck blood glucose in 30 and 60 minutes.',
],
};
}
if (A11 === '3') {
r.advice = {
type: 'additional',
text: [
'STOP INSULIN FOR AT LEAST 1 HOUR',
'Ensure background nutrition or glucose intake. Recheck blood glucose in 1 hour.',
],
};
}
if (A11 === '10') {
r.advice = {
type: 'additional',
text: [
'Recheck blood glucose in 1 hour.',
'If blood glucose has been between 6-10mmol consider 2 hourly blood glucose checks.',
],
};
}
if (A11 === '17') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 1 hour. '] };
}
if (A11 === '18') {
r.advice = {
type: 'additional',
text: ['Recheck blood glucose in 1-2 hours.', '(1 hour if drop in blood glucose > 2 mmol/L in last hour)'],
};
}
if (A11 === '29') {
r.advice = {
type: 'additional',
text: ['STOP INSULIN FOR AT LEAST 1 HOUR', 'Restart insulin if blood glucose > 10mmol/L'],
};
}
if (A11 === '32') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 2 hours.'] };
}
if (A11 === '33') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 1 hour.'] };
}
if (A11 === '34') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 1 hour.'] };
}
if (A11 === '35') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 1 hour.'] };
}
if (A11 === '36') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 2 hours.'] };
}
if (A11 === '37') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 1 hour.'] };
}
if (A11 === '38') {
r.advice = { type: 'additional', text: ['Recheck blood glucose in 1 hour.'] };
}
if (A11 === '53') {
r.advice = {
type: 'additional',
text: ['Recheck blood glucose in 1 hour.', 'Caution as blood glucose is approaching bottom of target range.'],
};
}
if (A11 === '54') {
r.advice = {
type: 'additional',
text: ['If blood glucose and calorie intake have been stable for last 2 hours move to 2 hourly BG checks. '],
};
}
const hex = createGovernance({
f: 'b',
rate,
current,
previous,
});
r.hex = hex;
return r;
}
startingRate100(passedValue) {
if (Number.isNaN(parseFloat(passedValue))) {
return false;
}
const bg = parseFloat(passedValue);
if (bg < 0) {
return false;
}
let result = false;
let rate = '';
let rateNum = 0;
if (bg <= 4) {
result = 'Treat hypoglycaemia according to protocol';
rate = 'N/A';
rateNum = 0;
}
if (bg > 4 && bg <= 10) {
result = 'No insulin required - recheck 4-6 hourly';
rate = 'N/A';
rateNum = 0;
}
if (bg > 10 && bg <= 12) {
result = 'Start insulin at 1 unit/hr';
rate = '1';
rateNum = 1;
}
if (bg > 12 && bg <= 15) {
result = 'Start insulin at 2 units/hr';
rate = '2';
rateNum = 2;
}
if (bg > 15 && bg <= 18) {
result = 'Start insulin at 3 units/hr';
rate = '3';
rateNum = 3;
}
if (bg > 18) {
result = 'Start insulin at 4 units/hr';
rate = '4';
rateNum = 4;
}
const hex = createGovernance({ f: 'a', glucose: bg });
return {
advice: { type: 'normal', text: [result] },
rate,
rateNum,
hex,
};
}
}

/* eslint no-console: 0, max-len: 0 */
function hexDateConvert(fr) {
const dt = new Date();
Expand Down Expand Up @@ -63,6 +394,9 @@ function governance(hex) {
curr = hexToFloat(codes[0].substr(2, 3));
last = hexToFloat(codes[0].substr(5, 3));
}
if (version === null) {
return null;
}
return {
function: f,
current: curr,
Expand All @@ -74,12 +408,14 @@ function governance(hex) {
}
function createGovernance(obj) {
const n = new Date();
if (obj.f === 'a') {
const hex = `${glucoseToHex(obj.glucose)}-a${getHexDate(n)}`;
if (obj.f === 'a' || obj.f === 'd') {
const hex = `${glucoseToHex(obj.glucose)}-${obj.f}${getHexDate(n)}`;
return hex;
}
if (obj.f === 'b') {
const h = `${rateToHex(obj.rate) + glucoseToHex(obj.current) + glucoseToHex(obj.previous)}-c${getHexDate(n)}`;
if (obj.f === 'b' || obj.f === 'c') {
const h = `${rateToHex(obj.rate) + glucoseToHex(obj.current) + glucoseToHex(obj.previous)}-${obj.f}${getHexDate(
n
)}`;
return h;
}
return false;
Expand Down Expand Up @@ -125,7 +461,7 @@ function startingRate(passedValue) {
rate = '4';
rateNum = 4;
}
const hex = createGovernance({ f: 'a', glucose: bg });
const hex = createGovernance({ f: 'd', glucose: bg });
return {
advice: { type: 'normal', text: [result] },
rate,
Expand Down Expand Up @@ -396,6 +732,7 @@ const ongoingRate = (passedCurrent, passedPrevious, passedRate) => {
return r;
};

exports.Legacy = Legacy;
exports.createGovernance = createGovernance;
exports.getHexDate = getHexDate;
exports.glucoseToHex = glucoseToHex;
Expand Down
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