things+stuff

server/utils/id.js

@@ -1,29 +1,52 @@
-export function cleanName(s) {
-    if (typeof s !== "string") {
-        throw new Error("String expected, but got a ", typeof s);
+const UID_DIGITS = 12;
+const MINI_UID_REGEX = /\.uid\.[a-z0-9]{6,}$/;
+const ID_SANITY_REGEX = /^:([a-z0-9]+\.)*[a-z0-9_]+$/;
+
+/**
+ * Sanity check a string to see if it is a potential id.
+ *
+ * @param {string} id
+ * @returns {boolean}
+ */
+export function isIdSane(id) {
+    if (typeof id !== "string") {
+        return false;
     }
-    return s
-        .toLowerCase()
-        .replace(" ", "_")
-        .replace(/[^a-zA-Z0-9_]/, "_");
+
+    if (id.length < 2) {
+        return false;
+    }
+
+    return ID_SANITY_REGEX.test(id);
 }
 
 /**
+ * @returns {string} crypto-unsafe pseudo random number.
+ *
  * Generate a random number, convert it to base36, and return it as a string with 7-8 characters.
  */
 export function miniUid() {
     // we use 12 digits, but we could go up to 16
-    return Number(Math.random().toFixed(12).substring(2)).toString(36);
+    return Number(Math.random().toFixed(UID_DIGITS).substring(2)).toString(36);
 }
 
 /**
- * Generate an id from a name
+ * Generate an id from a string
+ * @param {string[]} str
  */
-export function fromName(...names) {
-    let res = "";
-    for (const name of names) {
-        res += ":" + cleanName(name);
-    }
-
-    return res + ":" + miniUid();
+export function appendMiniUid(str) {
+    return str + ".uid." + miniUid();
+}
+
+/**
+ * Does a given string end with ".uid.23khtasdz", etc.
+ *
+ * @param {string} str
+ */
+export function endsWithMiniUid(str) {
+    return MINI_UID_REGEX.test(str);
+}
+
+export function appendOrReplaceMiniUid(str) {
+    return appendMiniUid(str.replace(MINI_UID_REGEX, ""));
 }