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silverbullet/plugs/template/util.ts

85 lines
2.1 KiB
TypeScript

import { handlebarHelpers } from "../../common/syscalls/handlebar_helpers.ts";
import { PageMeta } from "$sb/types.ts";
import { handlebars, space } from "$sb/syscalls.ts";
import { cleanTemplate } from "./plug_api.ts";
export function buildHandebarOptions(pageMeta: PageMeta) {
return {
helpers: handlebarHelpers(),
data: { page: pageMeta },
};
}
export function defaultJsonTransformer(v: any): string {
if (v === undefined) {
return "";
}
if (typeof v === "string") {
return v.replaceAll("\n", " ").replaceAll("|", "\\|");
}
if (Array.isArray(v)) {
return v.map(defaultJsonTransformer).join(", ");
} else if (typeof v === "object") {
return Object.entries(v).map(([k, v]: [string, any]) =>
`${k}: ${defaultJsonTransformer(v)}`
).join(", ");
}
return "" + v;
}
// Nicely format an array of JSON objects as a Markdown table
export function jsonToMDTable(
jsonArray: any[],
valueTransformer: (v: any) => string = defaultJsonTransformer,
): string {
const headers = new Set<string>();
for (const entry of jsonArray) {
for (const k of Object.keys(entry)) {
headers.add(k);
}
}
const headerList = [...headers];
const lines = [];
lines.push(
"|" +
headerList
.map(
(headerName) => headerName,
)
.join("|") +
"|",
);
lines.push(
"|" +
headerList
.map(() => "--")
.join("|") +
"|",
);
for (const val of jsonArray) {
const el = [];
for (const prop of headerList) {
const s = valueTransformer(val[prop]);
el.push(s);
}
lines.push("|" + el.join("|") + "|");
}
return lines.join("\n");
}
export async function renderQueryTemplate(
pageMeta: PageMeta,
templatePage: string,
data: any[],
renderAll: boolean,
): Promise<string> {
let templateText = await space.readPage(templatePage);
templateText = await cleanTemplate(templateText);
if (!renderAll) {
templateText = `{{#each .}}\n${templateText}\n{{/each}}`;
}
return handlebars.renderTemplate(templateText, data, { page: pageMeta });
}