ESM: Ported DateTime operations

src/core/operations/TranslateDateTimeFormat.mjs

@@ -0,0 +1,78 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import moment from "moment-timezone";
+import {DATETIME_FORMATS, FORMAT_EXAMPLES} from "../lib/DateTime";
+
+/**
+ * Translate DateTime Format operation
+ */
+class TranslateDateTimeFormat extends Operation {
+
+    /**
+     * TranslateDateTimeFormat constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Translate DateTime Format";
+        this.module = "Default";
+        this.description = "Parses a datetime string in one format and re-writes it in another.<br><br>Run with no input to see the relevant format string examples.";
+        this.inputType = "string";
+        this.outputType = "html";
+        this.args = [
+            {
+                "name": "Built in formats",
+                "type": "populateOption",
+                "value": DATETIME_FORMATS,
+                "target": 1
+            },
+            {
+                "name": "Input format string",
+                "type": "binaryString",
+                "value": "DD/MM/YYYY HH:mm:ss"
+            },
+            {
+                "name": "Input timezone",
+                "type": "option",
+                "value": ["UTC"].concat(moment.tz.names())
+            },
+            {
+                "name": "Output format string",
+                "type": "binaryString",
+                "value": "dddd Do MMMM YYYY HH:mm:ss Z z"
+            },
+            {
+                "name": "Output timezone",
+                "type": "option",
+                "value": ["UTC"].concat(moment.tz.names())
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {html}
+     */
+    run(input, args) {
+        const [inputFormat, inputTimezone, outputFormat, outputTimezone] = args;
+        let date;
+
+        try {
+            date = moment.tz(input, inputFormat, inputTimezone);
+            if (!date || date.format() === "Invalid date") throw Error;
+        } catch (err) {
+            return "Invalid format.\n\n" + FORMAT_EXAMPLES;
+        }
+
+        return date.tz(outputTimezone).format(outputFormat);
+    }
+
+}
+
+export default TranslateDateTimeFormat;