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silverbullet/plugs/query/query.ts

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import type { WidgetContent } from "$sb/app_event.ts";
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import { events, language, space, system } from "$sb/syscalls.ts";
import { parseTreeToAST } from "$sb/lib/tree.ts";
import { astToKvQuery } from "$sb/lib/parse-query.ts";
import { jsonToMDTable, renderTemplate } from "../directive/util.ts";
import { replaceTemplateVars } from "../template/template.ts";
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export async function widget(
bodyText: string,
pageName: string,
): Promise<WidgetContent> {
const pageMeta = await space.getPageMeta(pageName);
try {
const queryAST = parseTreeToAST(
await language.parseLanguage(
"query",
await replaceTemplateVars(bodyText, pageMeta),
),
);
const parsedQuery = astToKvQuery(queryAST[1]);
const eventName = `query:${parsedQuery.querySource}`;
let resultMarkdown = "";
// console.log("Parsed query", parsedQuery);
// Let's dispatch an event and see what happens
const results = await events.dispatchEvent(
eventName,
{ query: parsedQuery, pageName: pageMeta.name },
30 * 1000,
);
if (results.length === 0) {
// This means there was no handler for the event which means it's unsupported
return {
html:
`**Error:** Unsupported query source '${parsedQuery.querySource}'`,
};
} else {
const allResults = results.flat();
if (allResults.length === 0) {
resultMarkdown = "No results";
} else {
if (parsedQuery.render) {
// Configured a custom rendering template, let's use it!
const rendered = await renderTemplate(
pageMeta,
parsedQuery.render,
allResults,
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parsedQuery.renderAll!,
);
resultMarkdown = rendered.trim();
} else {
// TODO: At this point it's a bit pointless to first render a markdown table, and then convert that to HTML
// We should just render the HTML table directly
resultMarkdown = jsonToMDTable(allResults);
}
}
}
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return system.invokeFunction(
"markdown.markdownContentWidget",
resultMarkdown,
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pageName,
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);
} catch (e: any) {
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return system.invokeFunction(
"markdown.markdownContentWidget",
`**Error:** ${e.message}`,
);
}
}