Add basic Notes UI

routes/notes/open/[fileName].tsx

@@ -0,0 +1,56 @@
+import { Handlers, PageProps } from 'fresh/server.ts';
+
+import { FreshContextState } from '/lib/types.ts';
+import { getFile } from '/lib/data/files.ts';
+import Note from '/islands/notes/Note.tsx';
+
+interface Data {
+  fileName: string;
+  currentPath: string;
+  contents: string;
+}
+
+export const handler: Handlers<Data, FreshContextState> = {
+  async GET(request, context) {
+    if (!context.state.user) {
+      return new Response('Redirect', { status: 303, headers: { 'Location': `/login` } });
+    }
+
+    const { fileName } = context.params;
+
+    if (!fileName) {
+      return new Response('Not Found', { status: 404 });
+    }
+
+    const searchParams = new URL(request.url).searchParams;
+
+    let currentPath = searchParams.get('path') || '/';
+
+    // Send invalid paths back to notes root
+    if (!currentPath.startsWith('/Notes/') || currentPath.includes('../')) {
+      currentPath = '/Notes/';
+    }
+
+    // Always append a trailing slash
+    if (!currentPath.endsWith('/')) {
+      currentPath = `${currentPath}/`;
+    }
+
+    // Don't allow non-markdown files here
+    if (!fileName.endsWith('.md')) {
+      return new Response('Not Found', { status: 404 });
+    }
+
+    const fileResult = await getFile(context.state.user.id, currentPath, decodeURIComponent(fileName));
+
+    if (!fileResult.success) {
+      return new Response('Not Found', { status: 404 });
+    }
+
+    return await context.render({ fileName, currentPath, contents: new TextDecoder().decode(fileResult.contents!) });
+  },
+};
+
+export default function OpenNotePage({ data }: PageProps<Data, FreshContextState>) {
+  return <Note fileName={data.fileName} currentPath={data.currentPath} contents={data.contents} />;
+}