Templates 2.0 (#636)

Templates 2.0 and a whole bunch of other refactoring

common/PAGE_TEMPLATES.ts

@@ -6,3 +6,11 @@ A list of built-in settings [[!silverbullet.md/SETTINGS|can be found here]].
 indexPage: index
 \`\`\`
 `;
+
+export const INDEX_TEMPLATE =
+  `Hello! And welcome to your brand new SilverBullet space!
+
+\`\`\`template
+page: "[[!silverbullet.md/Getting Started]]"
+\`\`\`
+`;

common/deps.ts

@@ -71,7 +71,12 @@ export {
   Text,
   Transaction,
 } from "@codemirror/state";
-export type { ChangeSpec, Extension, StateCommand } from "@codemirror/state";
+export type {
+  ChangeSpec,
+  Compartment,
+  Extension,
+  StateCommand,
+} from "@codemirror/state";
 export {
   codeFolding,
   defaultHighlightStyle,
@@ -132,3 +137,5 @@ export {
 export { mime } from "https://deno.land/x/mimetypes@v1.0.0/mod.ts";
 
 export { compile as gitIgnoreCompiler } from "https://esm.sh/gitignore-parser@0.0.2";
+
+export { z } from "https://deno.land/x/zod@v3.22.4/mod.ts";

common/languages.ts

@@ -34,6 +34,7 @@ export const builtinLanguages: Record<string, Language> = {
   "meta": StreamLanguage.define(yamlLanguage),
   "yaml": StreamLanguage.define(yamlLanguage),
   "template": StreamLanguage.define(yamlLanguage),
+  "block": StreamLanguage.define(yamlLanguage),
   "embed": StreamLanguage.define(yamlLanguage),
   "data": StreamLanguage.define(yamlLanguage),
   "toc": StreamLanguage.define(yamlLanguage),

common/query_functions.ts

@@ -0,0 +1,15 @@
+import { FunctionMap } from "$sb/types.ts";
+import { builtinFunctions } from "$sb/lib/builtin_query_functions.ts";
+
+export function buildQueryFunctions(allKnownPages: Set<string>): FunctionMap {
+  return {
+    ...builtinFunctions,
+    pageExists: (name: string) => {
+      if (name.startsWith("!") || name.startsWith("{{")) {
+        // Let's assume federated pages exist, and ignore template variable ones
+        return true;
+      }
+      return allKnownPages.has(name);
+    },
+  };
+}

common/space_index.ts

@@ -16,7 +16,7 @@ export async function ensureSpaceIndex(ds: DataStore, system: System<any>) {
   if (currentIndexVersion !== desiredIndexVersion && !indexOngoing) {
     console.info("Performing a full space reindex, this could take a while...");
     indexOngoing = true;
-    await system.loadedPlugs.get("index")!.invoke("reindexSpace", []);
+    await system.invokeFunction("index.reindexSpace", []);
     console.info("Full space index complete.");
     await markFullSpaceIndexComplete(ds);
     indexOngoing = false;

common/syscalls/handlebar_helpers.ts

@@ -40,6 +40,15 @@ export function handlebarHelpers() {
       nextWeek.setDate(nextWeek.getDate() + 7);
       return niceDate(nextWeek);
     },
+    weekStart: (startOnMonday = true) => {
+      const d = new Date();
+      const day = d.getDay();
+      let diff = d.getDate() - day;
+      if (startOnMonday) {
+        diff += day == 0 ? -6 : 1;
+      }
+      return niceDate(new Date(d.setDate(diff)));
+    },
     ifEq: function (v1: any, v2: any, options: any) {
       if (v1 === v2) {
         return options.fn(this);

common/syscalls/handlebars.ts

@@ -10,14 +10,22 @@ export function handlebarsSyscalls(): SysCallMapping {
       obj: any,
       globals: Record<string, any> = {},
     ): string => {
-      const templateFn = Handlebars.compile(
-        template,
-        { noEscape: true },
-      );
-      return templateFn(obj, {
-        helpers: handlebarHelpers(),
-        data: globals,
-      });
+      return renderHandlebarsTemplate(template, obj, globals);
     },
   };
 }
+
+export function renderHandlebarsTemplate(
+  template: string,
+  obj: any,
+  globals: Record<string, any>,
+) {
+  const templateFn = Handlebars.compile(
+    template,
+    { noEscape: true },
+  );
+  return templateFn(obj, {
+    helpers: handlebarHelpers(),
+    data: globals,
+  });
+}

common/util.ts

@@ -1,8 +1,9 @@
-import { SETTINGS_TEMPLATE } from "./settings_template.ts";
+import { SETTINGS_TEMPLATE } from "./PAGE_TEMPLATES.ts";
 import { YAML } from "./deps.ts";
 import { SpacePrimitives } from "./spaces/space_primitives.ts";
 import { expandPropertyNames } from "$sb/lib/json.ts";
 import type { BuiltinSettings } from "../web/types.ts";
+import { INDEX_TEMPLATE } from "./PAGE_TEMPLATES.ts";
 
 /**
  * Runs a function safely by catching any errors and logging them to the console.
@@ -88,14 +89,7 @@ export async function ensureSettingsAndIndex(
       );
       await space.writeFile(
         "index.md",
-        new TextEncoder().encode(
-          `Hello! And welcome to your brand new SilverBullet space!
-
-\`\`\`template
-page: "[[!silverbullet.md/Getting Started]]"
-\`\`\`
-`,
-        ),
+        new TextEncoder().encode(INDEX_TEMPLATE),
       );
     }
   }