feat(endpoint-micropub): use md5 hash of published date as final opti…

…on for a slug

this means the value stays the same, and doesn’t change each time a post is re-created

packages/endpoint-micropub/lib/jf2.js

@@ -1,4 +1,4 @@
-import { getDate, randomString, slugify } from "@indiekit/util";
+import { getDate, md5, slugify } from "@indiekit/util";
 import {
   fetchReferences,
   mf2tojf2,
@@ -236,17 +236,15 @@ export const getVideoProperty = (properties, me) => {
  */
 export const getSlugProperty = (properties, separator) => {
   const suggested = properties["mp-slug"];
-  const { name } = properties;
+  const { name, published } = properties;
 
   let string;
   if (suggested) {
     string = suggested;
   } else if (name) {
     string = excerptString(name, 5);
   } else {
-    string = randomString(5)
-      .replace("_", "0") // Slugify function strips any leading underscore
-      .replace(separator, "0"); // Don’t include slug separator character
+    string = md5(published).slice(0, 5);
   }
 
   return slugify(string, { separator });

packages/endpoint-micropub/test/unit/jf2.js

@@ -323,7 +323,7 @@ describe("endpoint-micropub/lib/jf2", () => {
 
   it("Derives slug by generating random string", () => {
     const properties = JSON.parse(
-      getFixture("jf2/note-slug-missing-no-name.jf2"),
+      getFixture("jf2/note-published-provided.jf2"),
     );
     const result = getSlugProperty(properties, "-");