wiki base, middleware

lib/wiki/api.ts

@@ -0,0 +1,70 @@
+import { default as pathlib } from "path";
+import fg from "fast-glob";
+import fs from "fs";
+import matter from "gray-matter";
+
+const wikiDir = pathlib.join(process.cwd(), "InvestWiki/wiki");
+
+const getAllFiles = (path: string) => {
+  const files = fg.sync("**/*.md", {
+    cwd: path,
+    onlyFiles: true,
+    absolute: false,
+  });
+  return files;
+};
+
+function getAllWikiPaths() {
+  const files = getAllFiles(wikiDir);
+  // manipulate array entries, remove the .md extension and move it to the front of the string
+  const paths = files.map((file: string) => {
+    const path = file.replace(".md", "");
+    // move the last part of the path to the front
+    const pathParts = path.split("/");
+    const lastPart = pathParts.pop();
+    if (lastPart) {
+      pathParts.unshift(lastPart);
+    }
+    return pathParts.join("/");
+  });
+  return paths;
+}
+
+function getWikiPath(lang: string, path: string) {
+  const files = getAllFiles(wikiDir);
+  // filter the files to only include the ones in the path
+  const pageFiles = files.filter(
+    (file) => file.split("/").slice(0, -1).join("/") === path
+  );
+
+  let pagePath = "";
+  // do https://github.com/vercel/next.js/blob/canary/examples/blog-starter/lib/api.ts
+  if (pageFiles.length !== 0) {
+    // check if there is a file with the language code
+    const langFile = pageFiles.find((file) => file.includes(`${lang}.md`));
+    if (langFile) {
+      pagePath = langFile;
+    } else {
+      // otherwise, use the english file if it exists, otherwise return the first file
+      pagePath =
+        pageFiles.find((file) => file.includes("en.md")) ?? pageFiles[0];
+    }
+  }
+  return pagePath;
+}
+
+function getWikiContent(lang: string, path: string) {
+  // get the path to the file
+  const relativePath = getWikiPath(lang, path);
+  if (!relativePath) {
+    return null;
+  }
+  const filePath = pathlib.join(wikiDir, relativePath);
+  // read the file
+  const fileContents = fs.readFileSync(filePath, "utf8");
+  const { data, content } = matter(fileContents);
+
+  return { data, content };
+}
+
+export { getWikiPath, getAllWikiPaths, getWikiContent };