Fix template embedding via federation

plugs/query/template.ts

@@ -1,5 +1,6 @@
 import { WidgetContent } from "$sb/app_event.ts";
 import { editor, handlebars, markdown, space, YAML } from "$sb/syscalls.ts";
+import { rewritePageRefs } from "$sb/lib/resolve.ts";
 import { renderMarkdownToHtml } from "../markdown/markdown_render.ts";
 import { prepareJS, wrapHTML } from "./util.ts";
 
@@ -20,16 +21,12 @@ export async function widget(bodyText: string): Promise<WidgetContent> {
   try {
     const config: TemplateConfig = await YAML.parse(bodyText);
     let templateText = config.template || "";
-    if (config.page) {
-      let page = config.page;
-      if (!page) {
-        throw new Error("Missing `page`");
+    let templatePage = config.page;
+    if (templatePage) {
+      if (templatePage.startsWith("[[")) {
+        templatePage = templatePage.slice(2, -2);
       }
-
-      if (page.startsWith("[[")) {
-        page = page.slice(2, -2);
-      }
-      templateText = await space.readPage(page);
+      templateText = await space.readPage(templatePage);
     }
 
     const rendered = config.raw
@@ -42,6 +39,10 @@ export async function widget(bodyText: string): Promise<WidgetContent> {
         },
       );
     const parsedMarkdown = await markdown.parseMarkdown(rendered);
+
+    if (templatePage) {
+      rewritePageRefs(parsedMarkdown, templatePage);
+    }
     const html = renderMarkdownToHtml(parsedMarkdown, {
       smartHardBreak: true,
     });

website/Templates.md

@@ -21,7 +21,6 @@ There are a number of built-in handlebars helpers you can use
 - `{{escapeRegexp "hello/there"}}` to escape a regexp, useful when injecting e.g. a page name into a query — think `name =~ /{{escapeRegexp @page.name}}/
 `* `{{replaceRegexp string regexp replacement}}`: replace a regular expression in a string, example use: `{{replaceRegexp name "#[^#\d\s\[\]]+\w+" ""}}` to remove hashtags from a task name
 - `{{json @page}}` translate any (object) value to JSON, mostly useful for debugging
-- `{{relativePath @page.name}}` translate a path to a relative one (to the current page), useful when injecting page names, e.g. `{{relativePath name}}`.
 - `{{substring "my string" 0 3}}` performs a substring operation on the first argument, which in this example would result in `my `
 - `{{prefixLines "my string\nanother" "  "}}` prefixes each line (except the first) with the given prefix.
 - `{{niceDate @page.lastModified}}` translates any timestamp into a “nice” format (e.g. `2023-06-20`).

website/🔌 Template.md

@@ -87,7 +87,6 @@ Currently supported (hardcoded in the code):
 - `{{escapeRegexp "hello/there"}}` to escape a regexp, useful when injecting e.g. a page name into a query — think `name =~ /{{escapeRegexp @page.name}}/
 `* `{{replaceRegexp string regexp replacement}}`: replace a regular expression in a string, example use: `{{replaceRegexp name "#[^#\d\s\[\]]+\w+" ""}}` to remove hashtags from a task name
 - `{{json @page}}` translate any (object) value to JSON, mostly useful for debugging
-- `{{relativePath @page.name}}` translate a path to a relative one (to the current page), useful when injecting page names, e.g. `{{relativePath name}}`.
 - `{{substring "my string" 0 3}}` performs a substring operation on the first argument, which in this example would result in `my `
 - `{{prefixLines "my string\nanother" "  "}}` prefixes each line (except the first) with the given prefix.
 - `{{niceDate @page.lastModified}}` translates any timestamp into a “nice” format (e.g. `2023-06-20`).