Work

packages/common/spaces/evented_space_primitives.ts

@@ -2,7 +2,7 @@ import { SpacePrimitives } from "./space_primitives";
 import { EventHook } from "@plugos/plugos/hooks/event";
 import { PageMeta } from "../types";
 import { Plug } from "@plugos/plugos/plug";
-import { trashPrefix } from "./constants";
+import { plugPrefix, trashPrefix } from "./constants";
 
 export class EventedSpacePrimitives implements SpacePrimitives {
   constructor(private wrapped: SpacePrimitives, private eventHook: EventHook) {}
@@ -41,7 +41,7 @@ export class EventedSpacePrimitives implements SpacePrimitives {
       lastModified
     );
     // This can happen async
-    if (!pageName.startsWith(trashPrefix)) {
+    if (!pageName.startsWith(trashPrefix) && !pageName.startsWith(plugPrefix)) {
       this.eventHook
         .dispatchEvent("page:saved", pageName)
         .then(() => {

packages/common/spaces/space.ts

@@ -13,8 +13,6 @@ export type SpaceEvents = {
   pageChanged: (meta: PageMeta) => void;
   pageDeleted: (name: string) => void;
   pageListUpdated: (pages: Set<PageMeta>) => void;
-  plugLoaded: (plugName: string, plug: Manifest) => void;
-  plugUnloaded: (plugName: string) => void;
 };
 
 export class Space extends EventEmitter<SpaceEvents> {
@@ -25,70 +23,45 @@ export class Space extends EventEmitter<SpaceEvents> {
 
   constructor(private space: SpacePrimitives, private trashEnabled = true) {
     super();
-    this.on({
-      pageCreated: async (pageMeta) => {
-        if (pageMeta.name.startsWith(plugPrefix)) {
-          let pageData = await this.readPage(pageMeta.name);
-          this.emit(
-            "plugLoaded",
-            pageMeta.name.substring(plugPrefix.length),
-            JSON.parse(pageData.text)
-          );
-          this.watchPage(pageMeta.name);
-        }
-      },
-      pageChanged: async (pageMeta) => {
-        if (pageMeta.name.startsWith(plugPrefix)) {
-          let pageData = await this.readPage(pageMeta.name);
-          this.emit(
-            "plugLoaded",
-            pageMeta.name.substring(plugPrefix.length),
-            JSON.parse(pageData.text)
-          );
-        }
-      },
-    });
   }
 
-  public updatePageListAsync() {
-    safeRun(async () => {
-      let newPageList = await this.space.fetchPageList();
-      let deletedPages = new Set<string>(this.pageMetaCache.keys());
-      newPageList.pages.forEach((meta) => {
-        const pageName = meta.name;
-        const oldPageMeta = this.pageMetaCache.get(pageName);
-        const newPageMeta = {
-          name: pageName,
-          lastModified: meta.lastModified,
-        };
-        if (
-          !oldPageMeta &&
-          (pageName.startsWith(plugPrefix) || !this.initialPageListLoad)
-        ) {
-          this.emit("pageCreated", newPageMeta);
-        } else if (
-          oldPageMeta &&
-          oldPageMeta.lastModified !== newPageMeta.lastModified &&
-          (!this.trashEnabled ||
-            (this.trashEnabled && !pageName.startsWith(trashPrefix)))
-        ) {
-          this.emit("pageChanged", newPageMeta);
-        }
-        // Page found, not deleted
-        deletedPages.delete(pageName);
-
-        // Update in cache
-        this.pageMetaCache.set(pageName, newPageMeta);
-      });
-
-      for (const deletedPage of deletedPages) {
-        this.pageMetaCache.delete(deletedPage);
-        this.emit("pageDeleted", deletedPage);
+  public async updatePageList() {
+    let newPageList = await this.space.fetchPageList();
+    let deletedPages = new Set<string>(this.pageMetaCache.keys());
+    newPageList.pages.forEach((meta) => {
+      const pageName = meta.name;
+      const oldPageMeta = this.pageMetaCache.get(pageName);
+      const newPageMeta = {
+        name: pageName,
+        lastModified: meta.lastModified,
+      };
+      if (
+        !oldPageMeta &&
+        (pageName.startsWith(plugPrefix) || !this.initialPageListLoad)
+      ) {
+        this.emit("pageCreated", newPageMeta);
+      } else if (
+        oldPageMeta &&
+        oldPageMeta.lastModified !== newPageMeta.lastModified &&
+        (!this.trashEnabled ||
+          (this.trashEnabled && !pageName.startsWith(trashPrefix)))
+      ) {
+        this.emit("pageChanged", newPageMeta);
       }
+      // Page found, not deleted
+      deletedPages.delete(pageName);
 
-      this.emit("pageListUpdated", this.listPages());
-      this.initialPageListLoad = false;
+      // Update in cache
+      this.pageMetaCache.set(pageName, newPageMeta);
     });
+
+    for (const deletedPage of deletedPages) {
+      this.pageMetaCache.delete(deletedPage);
+      this.emit("pageDeleted", deletedPage);
+    }
+
+    this.emit("pageListUpdated", this.listPages());
+    this.initialPageListLoad = false;
   }
 
   watch() {
@@ -109,7 +82,7 @@ export class Space extends EventEmitter<SpaceEvents> {
         }
       });
     }, pageWatchInterval);
-    this.updatePageListAsync();
+    this.updatePageList().catch(console.error);
   }
 
   async deletePage(name: string, deleteDate?: number): Promise<void> {
@@ -152,14 +125,18 @@ export class Space extends EventEmitter<SpaceEvents> {
     return this.space.invokeFunction(plug, env, name, args);
   }
 
-  listPages(): Set<PageMeta> {
-    return new Set(
-      [...this.pageMetaCache.values()].filter(
-        (pageMeta) =>
-          !pageMeta.name.startsWith(trashPrefix) &&
-          !pageMeta.name.startsWith(plugPrefix)
-      )
-    );
+  listPages(unfiltered = false): Set<PageMeta> {
+    if (unfiltered) {
+      return new Set(this.pageMetaCache.values());
+    } else {
+      return new Set(
+        [...this.pageMetaCache.values()].filter(
+          (pageMeta) =>
+            !pageMeta.name.startsWith(trashPrefix) &&
+            !pageMeta.name.startsWith(plugPrefix)
+        )
+      );
+    }
   }
 
   listTrash(): Set<PageMeta> {

packages/plugos-silverbullet-syscall/editor.ts

@@ -62,6 +62,14 @@ export function hideLhs(): Promise<void> {
   return syscall("editor.hideLhs");
 }
 
+export function showBhs(html: string, flex = 1): Promise<void> {
+  return syscall("editor.showBhs", html, flex);
+}
+
+export function hideBhs(): Promise<void> {
+  return syscall("editor.hideBhs");
+}
+
 export function insertAtPos(text: string, pos: number): Promise<void> {
   return syscall("editor.insertAtPos", text, pos);
 }

packages/plugos-silverbullet-syscall/space.ts

@@ -1,8 +1,8 @@
 import { syscall } from "./syscall";
 import { PageMeta } from "../common/types";
 
-export async function listPages(): Promise<PageMeta[]> {
-  return syscall("space.listPages");
+export async function listPages(unfiltered = false): Promise<PageMeta[]> {
+  return syscall("space.listPages", unfiltered);
 }
 
 export async function readPage(

packages/plugos-silverbullet-syscall/system.ts

@@ -7,3 +7,7 @@ export async function invokeFunction(
 ): Promise<any> {
   return syscall("system.invokeFunction", env, name, ...args);
 }
+
+export async function reloadPlugs() {
+  return syscall("system.reloadPlugs");
+}

packages/plugos/bin/plugos-bundle.ts

@@ -20,6 +20,10 @@ async function bundle(
     (await readFile(manifestPath)).toString()
   ) as Manifest<any>;
 
+  if (!manifest.name) {
+    throw new Error(`Missing 'name' in ${manifestPath}`);
+  }
+
   for (let [name, def] of Object.entries(manifest.functions)) {
     let jsFunctionName = "default",
       filePath = path.join(rootPath, def.path!);

packages/plugos/hooks/endpoint.test.ts

@@ -9,8 +9,8 @@ import { System } from "../system";
 test("Run a plugos endpoint server", async () => {
   let system = new System<EndpointHookT>("server");
   let plug = await system.load(
-    "test",
     {
+      name: "test",
       functions: {
         testhandler: {
           http: {

packages/plugos/hooks/event.ts

@@ -1,6 +1,7 @@
 import { Hook, Manifest } from "../types";
 import { System } from "../system";
 import { safeRun } from "../util";
+import { EventEmitter } from "events";
 
 // System events:
 // - plug:load (plugName: string)
@@ -11,6 +12,14 @@ export type EventHookT = {
 
 export class EventHook implements Hook<EventHookT> {
   private system?: System<EventHookT>;
+  public localListeners: Map<string, ((data: any) => any)[]> = new Map();
+
+  addLocalListener(eventName: string, callback: (data: any) => any) {
+    if (!this.localListeners.has(eventName)) {
+      this.localListeners.set(eventName, []);
+    }
+    this.localListeners.get(eventName)!.push(callback);
+  }
 
   async dispatchEvent(eventName: string, data?: any): Promise<any[]> {
     if (!this.system) {
@@ -32,15 +41,25 @@ export class EventHook implements Hook<EventHookT> {
         }
       }
     }
+    let localListeners = this.localListeners.get(eventName);
+    if (localListeners) {
+      for (let localListener of localListeners) {
+        let result = await Promise.resolve(localListener(data));
+        if (result) {
+          responses.push(result);
+        }
+      }
+    }
+
     return responses;
   }
 
   apply(system: System<EventHookT>): void {
     this.system = system;
     this.system.on({
-      plugLoaded: (name) => {
+      plugLoaded: (plug) => {
         safeRun(async () => {
-          await this.dispatchEvent("plug:load", name);
+          await this.dispatchEvent("plug:load", plug.name);
         });
       },
     });

packages/plugos/hooks/node_cron.ts

@@ -11,10 +11,10 @@ export class NodeCronHook implements Hook<CronHookT> {
   apply(system: System<CronHookT>): void {
     let tasks: ScheduledTask[] = [];
     system.on({
-      plugLoaded: (name, plug) => {
+      plugLoaded: () => {
         reloadCrons();
       },
-      plugUnloaded(name, plug) {
+      plugUnloaded() {
         reloadCrons();
       },
     });

packages/plugos/plug_loader.ts

@@ -3,11 +3,7 @@ import watch from "node-watch";
 import path from "path";
 import { createSandbox } from "./environments/node_sandbox";
 import { System } from "./system";
-
-function extractPlugName(localPath: string): string {
-  const baseName = path.basename(localPath);
-  return baseName.substring(0, baseName.length - ".plug.json".length);
-}
+import { Manifest } from "./types";
 
 export class DiskPlugLoader<HookT> {
   private system: System<HookT>;
@@ -27,13 +23,13 @@ export class DiskPlugLoader<HookT> {
         .then(async () => {
           try {
             // let localPath = path.join(this.plugPath, filename);
-            const plugName = extractPlugName(localPath);
-            console.log("Change detected for", plugName);
+            console.log("Change detected for", localPath);
             try {
               await fs.stat(localPath);
             } catch (e) {
               // Likely removed
-              await this.system.unload(plugName);
+              console.log("Plug removed, TODO: Unload");
+              return;
             }
             const plugDef = await this.loadPlugFromFile(localPath);
           } catch (e) {
@@ -47,12 +43,11 @@ export class DiskPlugLoader<HookT> {
 
   private async loadPlugFromFile(localPath: string) {
     const plug = await fs.readFile(localPath, "utf8");
-    const plugName = extractPlugName(localPath);
 
-    console.log("Now loading plug", plugName);
     try {
-      const plugDef = JSON.parse(plug);
-      await this.system.load(plugName, plugDef, createSandbox);
+      const plugDef: Manifest<HookT> = JSON.parse(plug);
+      console.log("Now loading plug", plugDef.name);
+      await this.system.load(plugDef, createSandbox);
       return plugDef;
     } catch (e) {
       console.error("Could not parse plugin file", e);

packages/plugos/runtime.test.ts

@@ -23,8 +23,8 @@ test("Run a Node sandbox", async () => {
     },
   });
   let plug = await system.load(
-    "test",
     {
+      name: "test",
       requiredPermissions: ["dangerous"],
       functions: {
         addTen: {

packages/plugos/syscalls/esbuild.ts

@@ -34,9 +34,7 @@ export function esbuildSyscalls(): SysCallMapping {
       }
 
       await writeFile(`${tmpDir}/${filename}`, code);
-      console.log("Dir", tmpDir);
       let jsCode = await compile(`${tmpDir}/${filename}`, "", false, ["yaml"]);
-      // console.log("JS code", jsCode);
       await rm(tmpDir, { recursive: true });
       return jsCode;
     },

packages/plugos/syscalls/store.dexie_browser.test.ts

@@ -10,8 +10,8 @@ test("Test store", async () => {
   let system = new System("server");
   system.registerSyscalls([], storeSyscalls("test", "test"));
   let plug = await system.load(
-    "test",
     {
+      name: "test",
       functions: {
         test1: {
           code: `(() => {

packages/plugos/syscalls/store.knex_node.test.ts

@@ -17,8 +17,8 @@ test("Test store", async () => {
   let system = new System("server");
   system.registerSyscalls([], storeSyscalls(db, "test_table"));
   let plug = await system.load(
-    "test",
     {
+      name: "test",
       functions: {
         test1: {
           code: `(() => {

packages/plugos/system.ts

@@ -7,11 +7,11 @@ export interface SysCallMapping {
   [key: string]: (ctx: SyscallContext, ...args: any) => Promise<any> | any;
 }
 
-export type SystemJSON<HookT> = { [key: string]: Manifest<HookT> };
+export type SystemJSON<HookT> = Manifest<HookT>[];
 
 export type SystemEvents<HookT> = {
-  plugLoaded: (name: string, plug: Plug<HookT>) => void;
-  plugUnloaded: (name: string, plug: Plug<HookT>) => void;
+  plugLoaded: (plug: Plug<HookT>) => void;
+  plugUnloaded: (name: string) => void;
 };
 
 export type SyscallContext = {
@@ -83,10 +83,10 @@ export class System<HookT> extends EventEmitter<SystemEvents<HookT>> {
   }
 
   async load(
-    name: string,
     manifest: Manifest<HookT>,
     sandboxFactory: SandboxFactory<HookT>
   ): Promise<Plug<HookT>> {
+    const name = manifest.name;
     if (this.plugs.has(name)) {
       await this.unload(name);
     }
@@ -100,29 +100,31 @@ export class System<HookT> extends EventEmitter<SystemEvents<HookT>> {
     }
     // Ok, let's load this thing!
     const plug = new Plug(this, name, sandboxFactory);
+    console.log("Loading", name);
     await plug.load(manifest);
     this.plugs.set(name, plug);
-    this.emit("plugLoaded", name, plug);
+    this.emit("plugLoaded", plug);
     return plug;
   }
 
   async unload(name: string) {
+    console.log("Unloading", name);
     const plug = this.plugs.get(name);
     if (!plug) {
       throw Error(`Plug ${name} not found`);
     }
     await plug.stop();
-    this.emit("plugUnloaded", name, plug);
+    this.emit("plugUnloaded", name);
     this.plugs.delete(name);
   }
 
   toJSON(): SystemJSON<HookT> {
-    let plugJSON: { [key: string]: Manifest<HookT> } = {};
+    let plugJSON: Manifest<HookT>[] = [];
     for (let [name, plug] of this.plugs) {
       if (!plug.manifest) {
         continue;
       }
-      plugJSON[name] = plug.manifest;
+      plugJSON.push(plug.manifest);
     }
     return plugJSON;
   }
@@ -132,9 +134,9 @@ export class System<HookT> extends EventEmitter<SystemEvents<HookT>> {
     sandboxFactory: SandboxFactory<HookT>
   ) {
     await this.unloadAll();
-    for (let [name, manifest] of Object.entries(json)) {
-      console.log("Loading plug", name);
-      await this.load(name, manifest, sandboxFactory);
+    for (let manifest of json) {
+      console.log("Loading plug", manifest.name);
+      await this.load(manifest, sandboxFactory);
     }
   }
 

packages/plugos/types.ts

@@ -1,6 +1,7 @@
 import { System } from "./system";
 
 export interface Manifest<HookT> {
+  name: string;
   requiredPermissions?: string[];
   functions: {
     [key: string]: FunctionDef<HookT>;

packages/plugs/core/core.plug.yaml

@@ -1,3 +1,4 @@
+name: core
 syntax:
   HashTag:
     firstCharacters:

packages/plugs/emoji/emoji.plug.yaml

@@ -1,3 +1,4 @@
+name: emoji
 functions:
   emojiCompleter:
     path: "./emoji.ts:emojiCompleter"

packages/plugs/ghost/ghost.plug.yaml

@@ -1,3 +1,4 @@
+name: ghost
 functions:
   downloadAllPostsCommand:
     path: "./ghost.ts:downloadAllPostsCommand"

packages/plugs/git/git.plug.yaml

@@ -1,3 +1,4 @@
+name: git
 requiredPermissions:
   - shell
 functions:

packages/plugs/markdown/markdown.plug.yaml

@@ -1,3 +1,4 @@
+name: markdown
 functions:
   toggle:
     path: "./markdown.ts:togglePreview"

packages/plugs/mattermost/mattermost.plug.yaml

@@ -1,3 +1,4 @@
+name: mattermost
 functions:
   test:
     path: mattermost.ts:savedPostsQueryProvider

packages/plugs/plugger/plugger.plug.yaml

@@ -1,8 +0,0 @@
-functions:
-  compile:
-    path: "./plugger.ts:compileCommand"
-    command:
-      name: "Plugger: Compile"
-  compileJS:
-    path: "./plugger.ts:compileJS"
-    env: server

packages/plugs/plugger/plugger.ts

@@ -1,85 +0,0 @@
-import type { Manifest } from "@silverbulletmd/common/manifest";
-import {
-  addParentPointers,
-  collectNodesOfType,
-  findNodeOfType,
-} from "@silverbulletmd/common/tree";
-import {
-  getCurrentPage,
-  getText,
-} from "@silverbulletmd/plugos-silverbullet-syscall/editor";
-import { parseMarkdown } from "@silverbulletmd/plugos-silverbullet-syscall/markdown";
-import { writePage } from "@silverbulletmd/plugos-silverbullet-syscall/space";
-import { invokeFunction } from "@silverbulletmd/plugos-silverbullet-syscall/system";
-import YAML from "yaml";
-import { extractMeta } from "../query/data";
-
-export async function compileCommand() {
-  let text = await getText();
-  let tree = await parseMarkdown(text);
-  addParentPointers(tree);
-  let allHeaders = collectNodesOfType(tree, "ATXHeading2");
-  let manifest: Manifest = {
-    functions: {},
-  };
-  for (let t of allHeaders) {
-    let parent = t.parent!;
-    let headerIdx = parent.children!.indexOf(t);
-    let headerTitle = t.children![1].text!.trim();
-    if (!headerTitle.startsWith("function ")) {
-      continue;
-    }
-    let functionName = headerTitle
-      .substring("function ".length)
-      .replace(/[^\w]/g, "_");
-    let meta: any;
-    let code: string | undefined;
-    let language = "js";
-    for (let i = headerIdx + 1; i < parent.children!.length; i++) {
-      let child = parent.children![i];
-      if (child.type === "FencedCode") {
-        let codeInfo = findNodeOfType(child, "CodeInfo")!.children![0].text!;
-        let codeText = findNodeOfType(child, "CodeText")!.children![0].text!;
-        if (codeInfo === "yaml") {
-          meta = YAML.parse(codeText);
-          continue;
-        }
-        if (codeInfo === "typescript" || codeInfo === "ts") {
-          language = "ts";
-        }
-        code = codeText;
-      }
-
-      if (child.type?.startsWith("ATXHeading")) {
-        break;
-      }
-    }
-    if (code) {
-      let compiled = await invokeFunction(
-        "server",
-        "compileJS",
-        `file.${language}`,
-        code
-      );
-      manifest.functions[functionName] = meta;
-      manifest.functions[functionName].code = compiled;
-    }
-  }
-
-  let pageMeta = extractMeta(tree);
-
-  if (pageMeta.name) {
-    await writePage(
-      `_plug/${pageMeta.name}`,
-      JSON.stringify(manifest, null, 2)
-    );
-    console.log("Wrote this plug", manifest);
-  }
-}
-
-export async function compileJS(
-  filename: string,
-  code: string
-): Promise<string> {
-  return self.syscall("esbuild.compile", filename, code);
-}

packages/plugs/plugmd/plugmd.plug.yaml

@@ -0,0 +1,25 @@
+name: plugmd
+functions:
+  updatePlugsCommand:
+    path: ./plugmd.ts:updatePlugsCommand
+    command:
+      name: "Plugs: Update"
+      key: "Ctrl-Shift-p"
+      mac: "Cmd-Shift-p"
+  updatePlugs:
+    path: ./plugmd.ts:updatePlugs
+    env: server
+  compile:
+    path: "./plugmd.ts:compileCommand"
+    command:
+      name: "Plug: Compile"
+      mac: "Cmd-Shift-c"
+      key: "Ctrl-Shift-c"
+  compileJS:
+    path: "./plugmd.ts:compileJS"
+    env: server
+
+  getPlugPlugMd:
+    path: "./plugmd.ts:getPlugPlugMd"
+    events:
+    - get-plug:plugmd

packages/plugs/plugmd/plugmd.ts

@@ -0,0 +1,174 @@
+import { dispatch } from "@plugos/plugos-syscall/event";
+import type { Manifest } from "@silverbulletmd/common/manifest";
+import {
+  addParentPointers,
+  collectNodesOfType,
+  findNodeOfType,
+} from "@silverbulletmd/common/tree";
+import {
+  getCurrentPage,
+  getText,
+  hideBhs,
+  showBhs,
+} from "@silverbulletmd/plugos-silverbullet-syscall/editor";
+import { parseMarkdown } from "@silverbulletmd/plugos-silverbullet-syscall/markdown";
+import {
+  deletePage,
+  listPages,
+  readPage,
+  writePage,
+} from "@silverbulletmd/plugos-silverbullet-syscall/space";
+import {
+  invokeFunction,
+  reloadPlugs,
+} from "@silverbulletmd/plugos-silverbullet-syscall/system";
+import YAML from "yaml";
+import { extractMeta } from "../query/data";
+
+export async function compileCommand() {
+  let text = await getText();
+  try {
+    let manifest = await compileDefinition(text);
+    await writePage(
+      `_plug/${manifest.name}`,
+      JSON.stringify(manifest, null, 2)
+    );
+    console.log("Wrote this plug", manifest);
+    await hideBhs();
+    // Important not to await!
+    reloadPlugs();
+  } catch (e: any) {
+    await showBhs(e.message);
+    // console.error("Got this error from compiler", e.message);
+  }
+}
+
+async function compileDefinition(text: string): Promise<Manifest> {
+  let tree = await parseMarkdown(text);
+
+  let pageMeta = extractMeta(tree);
+
+  if (!pageMeta.name) {
+    throw new Error("No 'name' specified in page meta");
+  }
+
+  addParentPointers(tree);
+  let allHeaders = collectNodesOfType(tree, "ATXHeading2");
+  let manifest: Manifest = {
+    name: pageMeta.name,
+    functions: {},
+  };
+  for (let t of allHeaders) {
+    let parent = t.parent!;
+    let headerIdx = parent.children!.indexOf(t);
+    let headerTitle = t.children![1].text!.trim();
+    if (!headerTitle.startsWith("function ")) {
+      continue;
+    }
+    let functionName = headerTitle
+      .substring("function ".length)
+      .replace(/[^\w]/g, "_");
+    let meta: any;
+    let code: string | undefined;
+    let language = "js";
+    for (let i = headerIdx + 1; i < parent.children!.length; i++) {
+      let child = parent.children![i];
+      if (child.type === "FencedCode") {
+        let codeInfo = findNodeOfType(child, "CodeInfo")!.children![0].text!;
+        let codeText = findNodeOfType(child, "CodeText")!.children![0].text!;
+        if (codeInfo === "yaml") {
+          meta = YAML.parse(codeText);
+          continue;
+        }
+        if (codeInfo === "typescript" || codeInfo === "ts") {
+          language = "ts";
+        }
+        code = codeText;
+      }
+
+      if (child.type?.startsWith("ATXHeading")) {
+        break;
+      }
+    }
+    if (code) {
+      let compiled = await invokeFunction(
+        "server",
+        "compileJS",
+        `file.${language}`,
+        code
+      );
+      manifest.functions[functionName] = meta;
+      manifest.functions[functionName].code = compiled;
+    }
+  }
+  return manifest;
+}
+
+export async function compileJS(
+  filename: string,
+  code: string
+): Promise<string> {
+  return self.syscall("esbuild.compile", filename, code);
+}
+
+async function listPlugs(): Promise<string[]> {
+  let unfilteredPages = await listPages(true);
+  return unfilteredPages
+    .filter((p) => p.name.startsWith("_plug/"))
+    .map((p) => p.name.substring("_plug/".length));
+}
+
+export async function listCommand() {
+  console.log(await listPlugs());
+}
+
+export async function updatePlugsCommand() {
+  await invokeFunction("server", "updatePlugs");
+  await reloadPlugs();
+}
+
+export async function updatePlugs() {
+  let { text: plugPageText } = await readPage("PLUGS");
+
+  let tree = await parseMarkdown(plugPageText);
+
+  let codeTextNode = findNodeOfType(tree, "CodeText");
+  if (!codeTextNode) {
+    console.error("Could not find yaml block in PLUGS");
+    return;
+  }
+  let plugYaml = codeTextNode.children![0].text;
+  let plugList = YAML.parse(plugYaml!);
+  console.log("Plug YAML", plugList);
+  let allPlugNames: string[] = [];
+  for (let plugUri of plugList) {
+    let [protocol, ...rest] = plugUri.split(":");
+    let manifests = await dispatch(`get-plug:${protocol}`, rest.join(":"));
+    if (manifests.length === 0) {
+      console.error("Could not resolve plug", plugUri);
+    }
+    // console.log("Got manifests", plugUri, protocol, manifests);
+    let manifest = manifests[0];
+    allPlugNames.push(manifest.name);
+    // console.log("Writing", `_plug/${manifest.name}`);
+    await writePage(
+      `_plug/${manifest.name}`,
+      JSON.stringify(manifest, null, 2)
+    );
+  }
+
+  // And delete extra ones
+  for (let existingPlug of await listPlugs()) {
+    if (!allPlugNames.includes(existingPlug)) {
+      console.log("Removing plug", existingPlug);
+      await deletePage(`_plug/${existingPlug}`);
+    }
+  }
+  // Important not to await!
+  reloadPlugs();
+}
+
+export async function getPlugPlugMd(pageName: string): Promise<Manifest> {
+  let { text } = await readPage(pageName);
+  return compileDefinition(text);
+}

packages/plugs/query/query.plug.yaml

@@ -1,3 +1,4 @@
+name: query
 functions:
   updateMaterializedQueriesOnPage:
     path: ./materialized_queries.ts:updateMaterializedQueriesOnPage

packages/plugs/tasks/tasks.plug.yaml

@@ -1,3 +1,4 @@
+name: tasks
 syntax:
   DeadlineDate:
     firstCharacters:

packages/server/api_server.ts

@@ -1,5 +1,5 @@
 import express, { Express } from "express";
-import { SilverBulletHooks } from "@silverbulletmd/common/manifest";
+import { Manifest, SilverBulletHooks } from "@silverbulletmd/common/manifest";
 import { EndpointHook } from "@plugos/plugos/hooks/endpoint";
 import { readFile } from "fs/promises";
 import { System } from "@plugos/plugos/system";
@@ -24,36 +24,40 @@ import buildMarkdown from "@silverbulletmd/web/parser";
 import { loadMarkdownExtensions } from "@silverbulletmd/web/markdown_ext";
 import http, { Server } from "http";
 import { esbuildSyscalls } from "@plugos/plugos/syscalls/esbuild";
+import { systemSyscalls } from "./syscalls/system";
 
 export class ExpressServer {
   app: Express;
   system: System<SilverBulletHooks>;
-  private rootPath: string;
   private space: Space;
   private distDir: string;
   private eventHook: EventHook;
   private db: Knex<any, unknown[]>;
   private port: number;
   private server?: Server;
+  builtinPlugDir: string;
+  preloadedModules: string[];
 
   constructor(
     port: number,
-    rootPath: string,
+    pagesPath: string,
     distDir: string,
+    builtinPlugDir: string,
     preloadedModules: string[]
   ) {
     this.port = port;
     this.app = express();
-    this.rootPath = rootPath;
+    this.builtinPlugDir = builtinPlugDir;
     this.distDir = distDir;
     this.system = new System<SilverBulletHooks>("server");
+    this.preloadedModules = preloadedModules;
 
     // Setup system
     this.eventHook = new EventHook();
     this.system.addHook(this.eventHook);
     this.space = new Space(
       new EventedSpacePrimitives(
-        new DiskSpacePrimitives(rootPath),
+        new DiskSpacePrimitives(pagesPath),
         this.eventHook
       ),
       true
@@ -61,12 +65,12 @@ export class ExpressServer {
     this.db = knex({
       client: "better-sqlite3",
       connection: {
-        filename: path.join(rootPath, "data.db"),
+        filename: path.join(pagesPath, "data.db"),
       },
       useNullAsDefault: true,
     });
 
-    this.system.registerSyscalls(["shell"], shellSyscalls(rootPath));
+    this.system.registerSyscalls(["shell"], shellSyscalls(pagesPath));
     this.system.addHook(new NodeCronHook());
 
     this.system.registerSyscalls([], pageIndexSyscalls(this.db));
@@ -74,6 +78,7 @@ export class ExpressServer {
     this.system.registerSyscalls([], eventSyscalls(this.eventHook));
     this.system.registerSyscalls([], markdownSyscalls(buildMarkdown([])));
     this.system.registerSyscalls([], esbuildSyscalls());
+    this.system.registerSyscalls([], systemSyscalls(this));
     this.system.registerSyscalls([], jwtSyscalls());
     this.system.addHook(new EndpointHook(this.app, "/_/"));
 
@@ -81,29 +86,26 @@ export class ExpressServer {
       this.rebuildMdExtensions();
     }, 100);
 
-    this.space.on({
-      plugLoaded: (plugName, plug) => {
-        safeRun(async () => {
-          console.log("Plug load", plugName);
-          await this.system.load(plugName, plug, (p) =>
-            createSandbox(p, preloadedModules)
+    this.eventHook.addLocalListener(
+      "get-plug:builtin",
+      async (plugName: string): Promise<Manifest> => {
+        // console.log("Ok, resovling a plugin", plugName);
+        try {
+          let manifestJson = await readFile(
+            path.join(this.builtinPlugDir, `${plugName}.plug.json`),
+            "utf8"
           );
-        });
-        throttledRebuildMdExtensions();
-      },
-      plugUnloaded: (plugName) => {
-        safeRun(async () => {
-          console.log("Plug unload", plugName);
-          await this.system.unload(plugName);
-        });
-        throttledRebuildMdExtensions();
-      },
-    });
+          return JSON.parse(manifestJson);
+        } catch (e) {
+          throw new Error(`No such builtin: ${plugName}`);
+        }
+      }
+    );
 
     setInterval(() => {
-      this.space.updatePageListAsync();
+      this.space.updatePageList().catch(console.error);
     }, 5000);
-    this.space.updatePageListAsync();
+    this.reloadPlugs().catch(console.error);
   }
 
   rebuildMdExtensions() {
@@ -113,6 +115,19 @@ export class ExpressServer {
     );
   }
 
+  async reloadPlugs() {
+    await this.space.updatePageList();
+    await this.system.unloadAll();
+    console.log("Reloading plugs");
+    for (let pageInfo of this.space.listPlugs()) {
+      let { text } = await this.space.readPage(pageInfo.name);
+      await this.system.load(JSON.parse(text), (p) =>
+        createSandbox(p, this.preloadedModules)
+      );
+    }
+    this.rebuildMdExtensions();
+  }
+
   async start() {
     await ensurePageIndexTable(this.db);
     console.log("Setting up router");

packages/server/server.ts

@@ -28,11 +28,16 @@ const webappDistDir = realpathSync(
   `${nodeModulesDir}/node_modules/@silverbulletmd/web/dist`
 );
 console.log("Webapp dist dir", webappDistDir);
+const plugDistDir = realpathSync(
+  `${nodeModulesDir}/node_modules/@silverbulletmd/plugs/dist`
+);
+console.log("Builtin plug dist dir", plugDistDir);
 
 const expressServer = new ExpressServer(
   port,
   pagesPath,
   webappDistDir,
+  plugDistDir,
   preloadModules
 );
 expressServer.start().catch((e) => {

packages/server/syscalls/space.ts

@@ -4,8 +4,8 @@ import { Space } from "@silverbulletmd/common/spaces/space";
 
 export default (space: Space): SysCallMapping => {
   return {
-    "space.listPages": async (ctx): Promise<PageMeta[]> => {
-      return [...space.listPages()];
+    "space.listPages": async (ctx, unfiltered = false): Promise<PageMeta[]> => {
+      return [...space.listPages(unfiltered)];
     },
     "space.readPage": async (
       ctx,

packages/server/syscalls/system.ts

@@ -0,0 +1,21 @@
+import { SysCallMapping } from "@plugos/plugos/system";
+import type { ExpressServer } from "../api_server";
+
+export function systemSyscalls(expressServer: ExpressServer): SysCallMapping {
+  return {
+    "system.invokeFunction": async (
+      ctx,
+      env: string,
+      name: string,
+      ...args: any[]
+    ) => {
+      if (!ctx.plug) {
+        throw Error("No plug associated with context");
+      }
+      return ctx.plug.invoke(name, args);
+    },
+    "system.reloadPlugs": async () => {
+      return expressServer.reloadPlugs();
+    },
+  };
+}

packages/web/components/status_bar.tsx

@@ -10,7 +10,7 @@ export function StatusBar({ editorView }: { editorView?: EditorView }) {
     readingTime = util.readingTime(wordCount);
   }
   return (
-    <div id="bottom">
+    <div id="status-bar">
       <div className="inner">
         {wordCount} words | {readingTime} min
       </div>

packages/web/editor.tsx

@@ -58,13 +58,10 @@ import { FilterOption } from "@silverbulletmd/common/types";
 import { syntaxTree } from "@codemirror/language";
 
 class PageState {
-  scrollTop: number;
-  selection: EditorSelection;
-
-  constructor(scrollTop: number, selection: EditorSelection) {
-    this.scrollTop = scrollTop;
-    this.selection = selection;
-  }
+  constructor(
+    readonly scrollTop: number,
+    readonly selection: EditorSelection
+  ) {}
 }
 
 const saveInterval = 1000;
@@ -123,7 +120,7 @@ export class Editor {
     this.system.registerSyscalls([], editorSyscalls(this));
     this.system.registerSyscalls([], spaceSyscalls(this));
     this.system.registerSyscalls([], indexerSyscalls(this.space));
-    this.system.registerSyscalls([], systemSyscalls(this.space));
+    this.system.registerSyscalls([], systemSyscalls(this));
     this.system.registerSyscalls(
       [],
       markdownSyscalls(buildMarkdown(this.mdExtensions))
@@ -153,10 +150,6 @@ export class Editor {
       }
     });
 
-    let throttledRebuildEditorState = throttle(() => {
-      this.rebuildEditorState();
-    }, 100);
-
     this.space.on({
       pageChanged: (meta) => {
         if (this.currentPage === meta.name) {
@@ -171,22 +164,10 @@ export class Editor {
           pages: pages,
         });
       },
-      plugLoaded: (plugName, plug) => {
-        safeRun(async () => {
-          console.log("Plug load", plugName);
-          await this.system.load(plugName, plug, createIFrameSandbox);
-          throttledRebuildEditorState();
-        });
-      },
-      plugUnloaded: (plugName) => {
-        safeRun(async () => {
-          console.log("Plug unload", plugName);
-          await this.system.unload(plugName);
-          throttledRebuildEditorState();
-        });
-      },
     });
 
+    await this.reloadPlugs();
+
     if (this.pageNavigator.getCurrentPage() === "") {
       await this.pageNavigator.navigate("start");
     }
@@ -359,7 +340,7 @@ export class Editor {
             mac: "Cmd-k",
             run: (): boolean => {
               this.viewDispatch({ type: "start-navigate" });
-              this.space.updatePageListAsync();
+              this.space.updatePageList();
               return true;
             },
           },
@@ -427,6 +408,17 @@ export class Editor {
     });
   }
 
+  async reloadPlugs() {
+    await this.space.updatePageList();
+    await this.system.unloadAll();
+    console.log("(Re)loading plugs");
+    for (let pageInfo of this.space.listPlugs()) {
+      let { text } = await this.space.readPage(pageInfo.name);
+      await this.system.load(JSON.parse(text), createIFrameSandbox);
+    }
+    this.rebuildEditorState();
+  }
+
   rebuildEditorState() {
     const editorView = this.editorView;
     if (editorView && this.currentPage) {
@@ -438,13 +430,16 @@ export class Editor {
         markdownSyscalls(buildMarkdown(this.mdExtensions))
       );
 
+      this.saveState();
+
       editorView.setState(
         this.createEditorState(this.currentPage, editorView.state.sliceDoc())
       );
       if (editorView.contentDOM) {
         editorView.contentDOM.spellcheck = true;
       }
-      editorView.focus();
+
+      this.restoreState(this.currentPage);
     }
   }
 
@@ -489,12 +484,7 @@ export class Editor {
 
     // Persist current page state and nicely close page
     if (this.currentPage) {
-      let pageState = this.openPages.get(this.currentPage);
-      if (pageState) {
-        pageState.selection = this.editorView!.state.selection;
-        pageState.scrollTop = this.editorView!.scrollDOM.scrollTop;
-        // console.log("Saved pageState", this.currentPage, pageState);
-      }
+      this.saveState();
       this.space.unwatchPage(this.currentPage);
       await this.save(true);
     }
@@ -513,26 +503,11 @@ export class Editor {
     }
 
     let editorState = this.createEditorState(pageName, doc.text);
-    let pageState = this.openPages.get(pageName);
     editorView.setState(editorState);
     if (editorView.contentDOM) {
       editorView.contentDOM.spellcheck = true;
     }
-    if (!pageState) {
-      pageState = new PageState(0, editorState.selection);
-      this.openPages.set(pageName, pageState!);
-      editorView.dispatch({
-        selection: { anchor: 0 },
-      });
-    } else {
-      // Restore state
-      // console.log("Restoring selection state", pageState);
-      editorView.dispatch({
-        selection: pageState.selection,
-      });
-      editorView.scrollDOM.scrollTop = pageState!.scrollTop;
-    }
-
+    this.restoreState(pageName);
     this.space.watchPage(pageName);
 
     this.viewDispatch({
@@ -543,6 +518,30 @@ export class Editor {
     await this.eventHook.dispatchEvent("editor:pageSwitched");
   }
 
+  private restoreState(pageName: string) {
+    let pageState = this.openPages.get(pageName);
+    const editorView = this.editorView!;
+    if (pageState) {
+      // Restore state
+      // console.log("Restoring selection state", pageState);
+      editorView.dispatch({
+        selection: pageState.selection,
+      });
+      editorView.scrollDOM.scrollTop = pageState!.scrollTop;
+    }
+    editorView.focus();
+  }
+
+  private saveState() {
+    this.openPages.set(
+      this.currentPage!,
+      new PageState(
+        this.editorView!.scrollDOM.scrollTop,
+        this.editorView!.state.selection
+      )
+    );
+  }
+
   ViewComponent(): React.ReactElement {
     const [viewState, dispatch] = useReducer(reducer, initialViewState);
     this.viewState = viewState;
@@ -625,6 +624,11 @@ export class Editor {
             <Panel html={viewState.rhsHTML} flex={viewState.showRHS} />
           )}
         </div>
+        {!!viewState.showBHS && (
+          <div id="bhs">
+            <Panel html={viewState.bhsHTML} flex={1} />
+          </div>
+        )}
         <StatusBar editorView={editor.editorView} />
       </>
     );

packages/web/reducer.ts

@@ -102,6 +102,18 @@ export default function reducer(
         showLHS: 0,
         lhsHTML: "",
       };
+    case "show-bhs":
+      return {
+        ...state,
+        showBHS: action.flex,
+        bhsHTML: action.html,
+      };
+    case "hide-bhs":
+      return {
+        ...state,
+        showBHS: 0,
+        bhsHTML: "",
+      };
     case "show-filterbox":
       return {
         ...state,

packages/web/styles/main.scss

@@ -110,13 +110,26 @@ body {
   height: 100%;
 }
 
-#bottom {
+#bhs {
+  height: 200px;
+  width: 100%;
+
+ .panel {
+    iframe {
+      border: 0;
+      width: 100%;
+      height: 100%;
+      padding: 0;
+      margin: 0;
+    }
+  }
+}
+
+#status-bar {
   height: 40px;
   line-height: 40px;
   padding: 0 10px;
   text-align: right;
   background-color: rgb(213, 213, 213);
   border-top: rgb(193, 193, 193) 1px solid;
-  .inner {
-  }
 }

packages/web/syscalls/editor.ts

@@ -92,6 +92,18 @@ export function editorSyscalls(editor: Editor): SysCallMapping {
         type: "hide-lhs",
       });
     },
+    "editor.showBhs": (ctx, html: string, flex: number) => {
+      editor.viewDispatch({
+        type: "show-bhs",
+        flex,
+        html,
+      });
+    },
+    "editor.hideBhs": (ctx) => {
+      editor.viewDispatch({
+        type: "hide-bhs",
+      });
+    },
     "editor.insertAtPos": (ctx, text: string, pos: number) => {
       editor.editorView!.dispatch({
         changes: {

packages/web/syscalls/space.ts

@@ -4,8 +4,8 @@ import { PageMeta } from "@silverbulletmd/common/types";
 
 export function spaceSyscalls(editor: Editor): SysCallMapping {
   return {
-    "space.listPages": async (): Promise<PageMeta[]> => {
-      return [...(await editor.space.listPages())];
+    "space.listPages": async (ctx, unfiltered = false): Promise<PageMeta[]> => {
+      return [...(await editor.space.listPages(unfiltered))];
     },
     "space.readPage": async (
       ctx,

packages/web/syscalls/system.ts

@@ -1,7 +1,7 @@
 import { SysCallMapping } from "@plugos/plugos/system";
-import { Space } from "@silverbulletmd/common/spaces/space";
+import type { Editor } from "../editor";
 
-export function systemSyscalls(space: Space): SysCallMapping {
+export function systemSyscalls(editor: Editor): SysCallMapping {
   return {
     "system.invokeFunction": async (
       ctx,
@@ -17,7 +17,10 @@ export function systemSyscalls(space: Space): SysCallMapping {
         return ctx.plug.invoke(name, args);
       }
 
-      return space.invokeFunction(ctx.plug, env, name, args);
+      return editor.space.invokeFunction(ctx.plug, env, name, args);
+    },
+    "system.reloadPlugs": async () => {
+      return editor.reloadPlugs();
     },
   };
 }

packages/web/types.ts

@@ -16,8 +16,10 @@ export type AppViewState = {
   unsavedChanges: boolean;
   showLHS: number; // 0 = hide, > 0 = flex
   showRHS: number; // 0 = hide, > 0 = flex
+  showBHS: number;
   rhsHTML: string;
   lhsHTML: string;
+  bhsHTML: string;
   allPages: Set<PageMeta>;
   commands: Map<string, AppCommand>;
   notifications: Notification[];
@@ -36,8 +38,10 @@ export const initialViewState: AppViewState = {
   unsavedChanges: false,
   showLHS: 0,
   showRHS: 0,
+  showBHS: 0,
   rhsHTML: "",
   lhsHTML: "",
+  bhsHTML: "",
   allPages: new Set(),
   commands: new Map(),
   notifications: [],
@@ -65,6 +69,8 @@ export type Action =
   | { type: "hide-rhs" }
   | { type: "show-lhs"; html: string; flex: number }
   | { type: "hide-lhs" }
+  | { type: "show-bhs"; html: string; flex: number }
+  | { type: "hide-bhs" }
   | {
       type: "show-filterbox";
       options: FilterOption[];