init

test-category.js

@@ -0,0 +1,55 @@
+const CATEGORY_SEPARATOR = " > ";
+
+function parseCategoryPath(categoryString) {
+  return categoryString
+    .split(CATEGORY_SEPARATOR)
+    .map((s) => s.trim())
+    .filter(Boolean);
+}
+
+function stringifyCategoryPath(path) {
+  return path.join(CATEGORY_SEPARATOR);
+}
+
+function getPostCategories(post) {
+  const category = post.data.category;
+  if (typeof category === "string") {
+    return [category];
+  }
+  return category;
+}
+
+function getPostsByCategory(posts, categoryPath) {
+  const targetPathString = stringifyCategoryPath(categoryPath);
+  console.log(`Target Path: "${targetPathString}"`);
+
+  return posts.filter((post) => {
+    const categories = getPostCategories(post);
+    return categories.some((cat) => {
+      const catPath = parseCategoryPath(cat);
+      const catPathString = stringifyCategoryPath(catPath);
+      console.log(`  Checking Post Category: "${catPathString}"`);
+
+      const match =
+        catPathString === targetPathString ||
+        catPathString.startsWith(targetPathString + CATEGORY_SEPARATOR);
+      console.log(`    Match: ${match}`);
+      return match;
+    });
+  });
+}
+
+// Mock data
+const posts = [
+  { data: { title: "Post 1", category: "Java" } },
+  { data: { title: "Post 2", category: "Java > JVM" } },
+  { data: { title: "Post 3", category: "Python" } },
+];
+
+const categoryPath = ["Java"];
+
+const result = getPostsByCategory(posts, categoryPath);
+console.log(
+  "Result:",
+  result.map((p) => p.data.title)
+);