first commit

packages/nodes-base/nodes/DateTime/V2/GenericFunctions.ts

@@ -0,0 +1,58 @@
+import { DateTime } from 'luxon';
+import moment from 'moment-timezone';
+import type { IExecuteFunctions } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
+
+export function parseDate(
+	this: IExecuteFunctions,
+	date: string | number | DateTime,
+	options: Partial<{
+		timezone: string;
+		fromFormat: string;
+	}> = {},
+) {
+	let parsedDate;
+
+	if (date instanceof DateTime) {
+		parsedDate = date;
+	} else {
+		// Check if the input is a number, don't convert to number if fromFormat is set
+		if (!Number.isNaN(Number(date)) && !options.fromFormat) {
+			//input is a number, convert to number in case it is a string formatted number
+			date = Number(date);
+			// check if the number is a timestamp in float format and convert to integer
+			if (!Number.isInteger(date)) {
+				date = date * 1000;
+			}
+		}
+
+		let timezone = options.timezone;
+		if (Number.isInteger(date)) {
+			const timestampLengthInMilliseconds1990 = 12;
+			// check if the number is a timestamp in seconds or milliseconds and create a moment object accordingly
+			if (date.toString().length < timestampLengthInMilliseconds1990) {
+				parsedDate = DateTime.fromSeconds(date as number);
+			} else {
+				parsedDate = DateTime.fromMillis(date as number);
+			}
+		} else {
+			if (!timezone && (date as string).includes('+')) {
+				const offset = (date as string).split('+')[1].slice(0, 2) as unknown as number;
+				timezone = `Etc/GMT-${offset * 1}`;
+			}
+
+			if (options.fromFormat) {
+				parsedDate = DateTime.fromFormat(date as string, options.fromFormat);
+			} else {
+				parsedDate = DateTime.fromISO(moment(date).toISOString());
+			}
+		}
+
+		parsedDate = parsedDate.setZone(timezone || 'Etc/UTC');
+
+		if (parsedDate.invalidReason === 'unparsable') {
+			throw new NodeOperationError(this.getNode(), 'Invalid date format');
+		}
+	}
+	return parsedDate;
+}