52 lines
1.8 KiB
TypeScript
52 lines
1.8 KiB
TypeScript
import { handlebars, markdown, YAML } from "$sb/syscalls.ts";
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import type { PageMeta } from "$sb/types.ts";
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import { extractFrontmatter } from "$sb/lib/frontmatter.ts";
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import { TemplateObject } from "./types.ts";
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import { renderToText } from "$sb/lib/tree.ts";
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/**
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* Strips the template from its frontmatter and renders it.
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* The assumption is that the frontmatter has already been parsed and should not appear in thhe rendered output.
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* @param templateText the template text
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* @param data data to be rendered by the template
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* @param globals a set of global variables
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* @returns
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*/
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export async function renderTemplate(
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templateText: string,
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pageMeta: PageMeta,
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data: any = {},
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): Promise<string> {
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const tree = await markdown.parseMarkdown(templateText);
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const frontmatter: Partial<TemplateObject> = await extractFrontmatter(tree, {
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removeFrontmatterSection: true,
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removeTags: ["template"],
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});
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templateText = renderToText(tree).trimStart();
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// console.log(`Trimmed template: |${templateText}|`);
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// If a 'frontmatter' key was specified in the frontmatter, use that as the frontmatter
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if (frontmatter.frontmatter) {
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if (typeof frontmatter.frontmatter === "string") {
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templateText = "---\n" + frontmatter.frontmatter + "---\n" + templateText;
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} else {
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templateText = "---\n" + (await YAML.stringify(frontmatter.frontmatter)) +
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"---\n" + templateText;
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}
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}
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return handlebars.renderTemplate(templateText, data, { page: pageMeta });
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}
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/**
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* Strips a template text from its frontmatter and #template tag
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*/
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export async function cleanTemplate(
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templateText: string,
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): Promise<string> {
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const tree = await markdown.parseMarkdown(templateText);
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await extractFrontmatter(tree, {
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removeFrontmatterSection: true,
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removeTags: ["template"],
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});
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return renderToText(tree).trimStart();
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}
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