Julia Friesel
44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
function getTemperatureStatus(targetDateString, previousDaysInCycle) {
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const tempValues = previousDaysInCycle
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.filter(day => day.temperature)
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.map(day => !day.temperature.exclude && rounded(day.temperature.value, 0.05))
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return tempValues.reduce((acc, curr) => {
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// if we don't yet have 6 lower temps, we just collect
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// if no shift has been detected, we collect low temps
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// after the shift has been detected, we count them as part
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// of the higher temperature phase
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if (acc.low.length < 6 || (!acc.shiftDetected && curr <= acc.ltl)) {
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acc.low.push(curr)
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acc.ltl = Math.max(...acc.low.slice(-6))
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} else {
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acc.high.push(curr)
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}
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// regular rule
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// we round the difference because of JS decimal weirdness
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if (acc.high.length === 3 && rounded(curr - acc.ltl, 0.01) >= 0.2) {
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acc.shiftDetected = true
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}
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// 1st exception rule
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if (acc.high.length === 4 && curr > acc.ltl) {
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acc.shiftDetected = true
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}
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return acc
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}, {
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low: [],
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high: [],
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ltl: null,
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shiftDetected: false
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})
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}
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function rounded(val, step) {
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const inverted = 1 / step
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return Math.round(val * inverted) / inverted
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}
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export {
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getTemperatureStatus
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} |