Complete UserProfileFormFields

src/tools/formatNumber.ts

@@ -0,0 +1,48 @@
+export const formatNumber = (input: string, format: string): string => {
+    if (!input) {
+        return "";
+    }
+
+    // array holding the patterns for the number of expected digits in each part
+    const digitPattern = format.match(/{\d+}/g);
+
+    if (!digitPattern) {
+        return "";
+    }
+
+    // calculate the maximum size of the given pattern based on the sum of the expected digits
+    const maxSize = digitPattern.reduce((total, p) => total + parseInt(p.replace("{", "").replace("}", "")), 0);
+
+    // keep only digits
+    let rawValue = input.replace(/\D+/g, "");
+
+    // make sure the value is a number
+    if (`${parseInt(rawValue)}` !== rawValue) {
+        return "";
+    }
+
+    // make sure the number of digits does not exceed the maximum size
+    if (rawValue.length > maxSize) {
+        rawValue = rawValue.substring(0, maxSize);
+    }
+
+    // build the regex based based on the expected digits in each part
+    const formatter = digitPattern.reduce((result, p) => result + `(\\d${p})`, "^");
+
+    // if the current digits match the pattern we have each group of digits in an array
+    let digits = new RegExp(formatter).exec(rawValue);
+
+    // no match, return the raw value without any format
+    if (!digits) {
+        return input;
+    }
+
+    let result = format;
+
+    // finally format the current digits accordingly to the given format
+    for (let i = 0; i < digitPattern.length; i++) {
+        result = result.replace(digitPattern[i], digits[i + 1]);
+    }
+
+    return result;
+};