update

resource-provider/helper.js

@@ -0,0 +1,51 @@
+import { promises as fs } from "fs";
+import path from "path";
+import { STATIC_DIR, SUBJECTS } from "./constants.js";
+
+export const cache = new Map();
+
+async function populateResources() {
+  const filenamesRaw = await fs.readdir(STATIC_DIR);
+  const filenames = filenamesRaw
+    .filter((file) => file.endsWith(".md"))
+    .map((file) => file.replace(".md", ""));
+
+  const topicResources = {};
+  filenames.forEach((resourceId) => {
+    const parts = resourceId.split("_");
+
+    const subjectPart = parts[1];
+    const topicPart = parts[2];
+
+    const topicId = `${subjectPart}_${topicPart}`;
+    topicResources[topicId] ||= [];
+    topicResources[topicId].push({
+      id: resourceId,
+      version: parseInt(parts[3].substring(2)),
+    });
+  });
+  Object.values(topicResources).forEach((resources) => {
+    resources.sort((a, b) => a.version - b.version);
+  });
+
+  Object.values(SUBJECTS).forEach((subject) => {
+    Object.values(subject.topics).forEach((topic) => {
+      topic.resources = topicResources[topic.id];
+    });
+  });
+}
+
+export async function getStructure({ refresh = false } = {}) {
+  const structureKey = "structure";
+
+  if (refresh) {
+    cache.delete(structureKey);
+  }
+
+  if (!cache.has(structureKey)) {
+    await populateResources();
+    cache.set(structureKey, SUBJECTS);
+  }
+
+  return cache.get(structureKey);
+}