Templates 2.0 (#636)

Templates 2.0 and a whole bunch of other refactoring

plugs/federation/federation.plug.yaml

@@ -28,3 +28,9 @@ functions:
     pageNamespace:
       pattern: "!.+"
       operation: getFileMeta
+
+  # Library management
+  importLibraryCommand:
+    path: library.ts:importLibraryCommand
+    command:
+      name: "Library: Import"

plugs/federation/federation.ts

@@ -117,7 +117,7 @@ export async function cacheFileListing(uri: string): Promise<FileMeta[]> {
 
 export async function readFile(
   name: string,
-): Promise<{ data: Uint8Array; meta: FileMeta } | undefined> {
+): Promise<{ data: Uint8Array; meta: FileMeta }> {
   const url = federatedPathToUrl(name);
   console.log("Fetching federated file", url);
   const r = await nativeFetch(url, {

plugs/federation/library.ts

@@ -0,0 +1,55 @@
+import { editor, space } from "$sb/syscalls.ts";
+import { cacheFileListing, readFile } from "./federation.ts";
+
+export async function importLibraryCommand(_def: any, uri?: string) {
+  if (!uri) {
+    uri = await editor.prompt("Import library (federation URL):");
+  }
+  if (!uri) {
+    return;
+  }
+  uri = uri.trim();
+  if (!uri.startsWith("!")) {
+    uri = `!${uri}`;
+  }
+  const allTemplates = (await cacheFileListing(uri)).filter((f) =>
+    f.name.endsWith(".md")
+  );
+  if (
+    !await editor.confirm(
+      `You are about to import ${allTemplates.length} templates, want to do this?`,
+    )
+  ) {
+    return;
+  }
+  for (const template of allTemplates) {
+    // Clean up file path
+    let pageName = template.name.replace(/\.md$/, "");
+    // Remove the federation part
+    const pieces = pageName.split("/");
+    pageName = pieces.slice(1).join("/");
+
+    // Fetch the file
+    const buf = (await readFile(template.name)).data;
+
+    try {
+      // Check if it already exists
+      await space.getPageMeta(pageName);
+
+      if (
+        !await editor.confirm(
+          `Page ${pageName} already exists, are you sure you want to override it?`,
+        )
+      ) {
+        continue;
+      }
+    } catch {
+      // Expected
+    }
+
+    // Write to local space
+    await space.writePage(pageName, new TextDecoder().decode(buf));
+  }
+  await editor.reloadSettingsAndCommands();
+  await editor.flashNotification("Import complete!");
+}