work in progress on custom fields

shared/fields.js

@@ -0,0 +1,65 @@
+'use strict';
+
+function parseDate(type, text) {
+    const isUs = type === 'us';
+    const trimmedText = text.trim();
+
+    // try international format first YYYY-MM-DD
+    const parts = trimmedText.match(/^(\d{4})\D+(\d{2})(?:\D+(\d{2})\b)$/);
+    let day, month, year;
+    let value;
+
+    if (parts) {
+        year = Number(parts[1]) || 2000;
+        month = Number(parts[2]) || 0;
+        day = Number(parts[3]) || 0;
+        value = new Date(Date.UTC(year, month - 1, day));
+    } else {
+        const parts = trimmedText.match(/^(\d+)\D+(\d+)(?:\D+(\d+)\b)$/);
+        if (!parts) {
+            value = null;
+        } else {
+            day = Number(parts[isUs ? 2 : 1]);
+            month = Number(parts[isUs ? 1 : 2]);
+            year = Number(parts[3]);
+
+            if (!day || !month) {
+                value = null;
+            } else {
+                value = new Date(Date.UTC(year, month - 1, day));
+            }
+        }
+    }
+
+    return value;
+}
+
+function parseBirthday(type, text) {
+    const isUs = type === 'us';
+    const trimmedText = text.trim();
+
+    let day, month, year;
+    let value;
+
+    const parts = trimmedText.match(/^(\d+)\D+(\d+)$/);
+    if (!parts) {
+        value = null;
+    } else {
+        day = Number(parts[isUs ? 2 : 1]);
+        month = Number(parts[isUs ? 1 : 2]);
+
+        if (!day || !month) {
+            value = null;
+        } else {
+            value = new Date(Date.UTC(2000, month - 1, day));
+        }
+    }
+    console.log(value);
+
+    return value;
+}
+
+module.exports = {
+    parseDate,
+    parseBirthday
+};