34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
/**
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* Return the data range for the given time period
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* Accepted values are numbers followed by the unit 'm', 'h', 'd', e.g. '5m', '3h', '7d'
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*
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* e.g. timePerdio: '5m'
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* returns: { min: Date(_now - 5min_), max: Date(_now_) }
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*
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* @param {String} timePeriod The 'period' string
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* @returns {{max: Date, min: Date}|{}} where max, min are Date objects representing the period range
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* It returns {} if the period filter does not represent any range (invalid range, etc)
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*/
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export const periodToDate = (timePeriod) => {
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const maxMs = Date.now();
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let minMs;
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const periodValue = parseInt(timePeriod.slice(0, -1), 10);
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if (Number.isNaN(periodValue) || periodValue <= 0) return {};
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const unit = timePeriod[timePeriod.length - 1];
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switch (unit) {
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case 'm':
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minMs = periodValue * 60 * 1000;
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break;
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case 'h':
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minMs = periodValue * 60 * 1000 * 60;
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break;
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case 'd':
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minMs = periodValue * 60 * 1000 * 60 * 24;
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break;
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default:
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return {};
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}
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return { min: new Date(maxMs - minMs), max: new Date(maxMs) };
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};
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