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Fix "Start+X" OFF time; add more comments

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J.D. Mallen 2022-08-22 20:59:44 -04:00
parent 7abd781d8a
commit 50f7880791
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GPG Key ID: 91A7CC9239E54C92
1 changed files with 22 additions and 7 deletions
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29
time/timeswitch/timeswitch.js
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@ -76,6 +76,7 @@ module.exports = function (RED) {
const currentTimeZone = now.timezone();
const selectedTimeZone = spacetime(now.epoch, this.timezone.toLowerCase()).timezone();
// handler function to convert minute strings (from <option> tags) to spacetime objects, called below
let getSelectedTimeFromMinuteString = minuteString => {
const selectedTimeInMinutesAfterMidnight = Number(minuteString);
let selectedTime = spacetime.now();
@ -83,7 +84,7 @@ module.exports = function (RED) {
if (selectedTimeInMinutesAfterMidnight < 1440) {
// determine offset to get from selected time zone to current timezone
// e.g. current (EDT) is -4, selected (PDT) is -7
// to get from PDT to EDT, you must add 3
// in order to get from PDT to EDT, you must add 3
// (-4) - (-7) = +3
const offset = currentTimeZone.current.offset - selectedTimeZone.current.offset;
const selectedHourValue = Math.floor(selectedTimeInMinutesAfterMidnight / 60);
@ -102,15 +103,25 @@ module.exports = function (RED) {
return selectedTime;
};
let selectedOnTime = getSelectedTimeFromMinuteString(node.startt); // 8/22 22:45
let selectedOffTime = getSelectedTimeFromMinuteString(node.endt); // 8/23 06:31
// our definitive next ON time
let selectedOnTime = getSelectedTimeFromMinuteString(node.startt);
// our definitive next OFF time
let selectedOffTime = getSelectedTimeFromMinuteString(node.endt);
// handle the "Start + X Minutes" cases
if (node.endt >= 10000) {
selectedOffTime = selectedOnTime.add(node.endt - 10000, "minutes");
// even though the next start time might be tomorrow,
// the start time + X minutes might still be coming today,
// so we need to go back a day first
const selectedOnTimeMinus1Day = selectedOnTime.subtract(1, "day");
selectedOffTime = selectedOnTimeMinus1Day.add(node.endt - 10000, "minutes");
// _now_ we can check if the off time is in the past
if (now.isAfter(selectedOffTime)) {
selectedOffTime = selectedOffTime.add(1, "day");
}
}
// handler function for the node payload
// handler function for the node payload, called below
let sendPayload = (payload, nextTime) => {
if (payload == 1) {
node.status({
@ -134,6 +145,7 @@ module.exports = function (RED) {
};
var proceed = true;
// if today is not among the selected days of the week, stop here
switch (nowNative.getDay()) {
case 0 : { if (!node.sun) { proceed &= false; } break; }
@ -171,17 +183,20 @@ module.exports = function (RED) {
return;
}
// if the chronological order is NOW, ON, OFF, then now should be OFF
// if the chronological order is NOW --> ON --> OFF, then now should be OFF
if (proceed && selectedOffTime.isAfter(selectedOnTime)) {
sendPayload(0, selectedOnTime);
return;
}
// if the chronological order is NOW, OFF, ON, then now should be ON
// if the chronological order is NOW --> OFF --> ON, then now should be ON
if (proceed && selectedOffTime.isBefore(selectedOnTime)) {
sendPayload(1, selectedOffTime);
return;
}
// Note: we already ensured that all ON or OFF times would be in the future,
// so there is no midnight wrapping issue.
});
var tock = setTimeout(function () {