Expose file and page meta data directly

common/spaces/file_meta_space_primitives.ts

@@ -0,0 +1,78 @@
+import { Plug } from "../../plugos/plug.ts";
+import { FileMeta } from "../types.ts";
+import { FileData, FileEncoding, SpacePrimitives } from "./space_primitives.ts";
+import type { SysCallMapping } from "../../plugos/system.ts";
+
+// Enriches the file list listing with custom metadata from the page index
+export class FileMetaSpacePrimitives implements SpacePrimitives {
+  constructor(
+    private wrapped: SpacePrimitives,
+    private indexSyscalls: SysCallMapping,
+  ) {
+  }
+
+  async fetchFileList(): Promise<FileMeta[]> {
+    const list = await this.wrapped.fetchFileList();
+    // Enrich the file list with custom meta data (for pages)
+    const allFilesMap: Map<string, any> = new Map(
+      list.map((fm) => [fm.name, fm]),
+    );
+    for (
+      const { page, value } of await this.indexSyscalls["index.queryPrefix"](
+        {} as any,
+        "meta:",
+      )
+    ) {
+      const p = allFilesMap.get(`${page}.md`);
+      if (p) {
+        for (const [k, v] of Object.entries(value)) {
+          if (
+            ["name", "lastModified", "size", "perm", "contentType"].includes(k)
+          ) {
+            continue;
+          }
+          p[k] = v;
+        }
+      }
+    }
+    return [...allFilesMap.values()];
+  }
+
+  readFile(
+    name: string,
+    encoding: FileEncoding,
+  ): Promise<{ data: FileData; meta: FileMeta }> {
+    return this.wrapped.readFile(name, encoding);
+  }
+
+  getFileMeta(name: string): Promise<FileMeta> {
+    return this.wrapped.getFileMeta(name);
+  }
+
+  writeFile(
+    name: string,
+    encoding: FileEncoding,
+    data: FileData,
+    selfUpdate?: boolean | undefined,
+  ): Promise<FileMeta> {
+    return this.wrapped.writeFile(name, encoding, data, selfUpdate);
+  }
+
+  deleteFile(name: string): Promise<void> {
+    return this.wrapped.deleteFile(name);
+  }
+
+  // deno-lint-ignore no-explicit-any
+  proxySyscall(plug: Plug<any>, name: string, args: any[]): Promise<any> {
+    return this.wrapped.proxySyscall(plug, name, args);
+  }
+
+  invokeFunction(
+    plug: Plug<any>,
+    env: string,
+    name: string,
+    args: any[],
+  ): Promise<any> {
+    return this.wrapped.invokeFunction(plug, env, name, args);
+  }
+}

common/spaces/space.ts

@@ -31,11 +31,7 @@ export class Space extends EventEmitter<SpaceEvents> {
     newPageList.forEach((meta) => {
       const pageName = meta.name;
       const oldPageMeta = this.pageMetaCache.get(pageName);
-      const newPageMeta: PageMeta = {
-        name: pageName,
-        lastModified: meta.lastModified,
-        perm: meta.perm,
-      };
+      const newPageMeta: PageMeta = { ...meta };
       if (
         !oldPageMeta &&
         (pageName.startsWith(plugPrefix) || !this.initialPageListLoad)

common/types.ts

@@ -6,14 +6,14 @@ export type FileMeta = {
   contentType: string;
   size: number;
   perm: "ro" | "rw";
-};
+} & Record<string, any>;
 
 export type PageMeta = {
   name: string;
   lastModified: number;
   lastOpened?: number;
   perm: "ro" | "rw";
-};
+} & Record<string, any>;
 
 export type AttachmentMeta = {
   name: string;

plugs/core/page.ts

@@ -60,20 +60,7 @@ export async function indexLinks({ name, tree }: IndexTreeEvent) {
 export async function pageQueryProvider({
   query,
 }: QueryProviderEvent): Promise<any[]> {
-  let allPages = await space.listPages();
-  const allPageMap: Map<string, any> = new Map(
-    allPages.map((pm) => [pm.name, pm]),
-  );
-  for (const { page, value } of await index.queryPrefix("meta:")) {
-    const p = allPageMap.get(page);
-    if (p) {
-      for (const [k, v] of Object.entries(value)) {
-        p[k] = v;
-      }
-    }
-  }
-  allPages = [...allPageMap.values()];
-  return applyQuery(query, allPages);
+  return applyQuery(query, await space.listPages());
 }
 
 export async function linkQueryProvider({

plugs/directive/util.ts

@@ -5,10 +5,18 @@ import { space } from "$sb/silverbullet-syscall/mod.ts";
 import { niceDate } from "$sb/lib/dates.ts";
 
 const maxWidth = 70;
+
+export function defaultJsonTransformer(_k: string, v: any) {
+  if (v === undefined) {
+    return "";
+  }
+  return "" + v;
+}
+
 // Nicely format an array of JSON objects as a Markdown table
 export function jsonToMDTable(
   jsonArray: any[],
-  valueTransformer: (k: string, v: any) => string = (_k, v) => "" + v,
+  valueTransformer: (k: string, v: any) => string = defaultJsonTransformer,
 ): string {
   const fieldWidths = new Map<string, number>();
   for (const entry of jsonArray) {

server/http_server.ts

@@ -25,7 +25,7 @@ import {
   ensureTable as ensureStoreTable,
   storeSyscalls,
 } from "../plugos/syscalls/store.deno.ts";
-import { System } from "../plugos/system.ts";
+import { SysCallMapping, System } from "../plugos/system.ts";
 import { PageNamespaceHook } from "./hooks/page_namespace.ts";
 import { PlugSpacePrimitives } from "./hooks/plug_space_primitives.ts";
 import {
@@ -38,6 +38,7 @@ import { AssetBundlePlugSpacePrimitives } from "../common/spaces/asset_bundle_sp
 import assetSyscalls from "../plugos/syscalls/asset.ts";
 import { AssetBundle } from "../plugos/asset_bundle/bundle.ts";
 import { AsyncSQLite } from "../plugos/sqlite/async_sqlite.ts";
+import { FileMetaSpacePrimitives } from "../common/spaces/file_meta_space_primitives.ts";
 
 export type ServerOptions = {
   port: number;
@@ -62,6 +63,7 @@ export class HttpServer {
   abortController?: AbortController;
   globalModules: Manifest;
   assetBundle: AssetBundle;
+  indexSyscalls: SysCallMapping;
 
   constructor(options: ServerOptions) {
     this.port = options.port;
@@ -84,9 +86,18 @@ export class HttpServer {
     const namespaceHook = new PageNamespaceHook();
     this.system.addHook(namespaceHook);
 
+    // The database used for persistence (SQLite)
+    this.db = new AsyncSQLite(path.join(options.pagesPath, "data.db"));
+    this.db.init().catch((e) => {
+      console.error("Error initializing database", e);
+    });
+
+    this.indexSyscalls = pageIndexSyscalls(this.db);
+
     // The space
     try {
-      this.spacePrimitives = new AssetBundlePlugSpacePrimitives(
+      this.spacePrimitives = new FileMetaSpacePrimitives(
+        new AssetBundlePlugSpacePrimitives(
           new EventedSpacePrimitives(
             new PlugSpacePrimitives(
               new DiskSpacePrimitives(options.pagesPath),
@@ -95,6 +106,8 @@ export class HttpServer {
             this.eventHook,
           ),
           this.assetBundle,
+        ),
+        this.indexSyscalls,
       );
       this.space = new Space(this.spacePrimitives);
     } catch (e: any) {
@@ -106,19 +119,13 @@ export class HttpServer {
       Deno.exit(1);
     }
 
-    // The database used for persistence (SQLite)
-    this.db = new AsyncSQLite(path.join(options.pagesPath, "data.db"));
-    this.db.init().catch((e) => {
-      console.error("Error initializing database", e);
-    });
-
     // The cron hook
     this.system.addHook(new DenoCronHook());
 
     // Register syscalls available on the server side
     this.system.registerSyscalls(
       [],
-      pageIndexSyscalls(this.db),
+      this.indexSyscalls,
       storeSyscalls(this.db, "store"),
       fullTextSearchSyscalls(this.db, "fts"),
       spaceSyscalls(this.space),
@@ -308,10 +315,8 @@ export class HttpServer {
     this.addPasswordAuth(fsRouter);
     // File list
     fsRouter.get("/", async ({ response }) => {
-      const list = await spacePrimitives.fetchFileList();
-      // console.log("List", list);
       response.headers.set("Content-type", "application/json");
-      response.body = JSON.stringify(list);
+      response.body = JSON.stringify(await spacePrimitives.fetchFileList());
     });
 
     fsRouter