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silverbullet/plugs/core/template.ts
2022-04-19 16:54:47 +02:00

78 lines
2.4 KiB
TypeScript

import { listPages, readPage, writePage } from "plugos-silverbullet-syscall/space";
import { filterBox, getCurrentPage, getText, navigate, prompt } from "plugos-silverbullet-syscall/editor";
import { parseMarkdown } from "plugos-silverbullet-syscall/markdown";
import { extractMeta } from "../query/data";
import { renderToText } from "../../common/tree";
import { niceDate } from "./dates";
import { dispatch } from "plugos-syscall/event";
import { invokeFunction } from "plugos-silverbullet-syscall/system";
const pageTemplatePrefix = `template/page/`;
export async function instantiateTemplateCommand() {
let allPages = await listPages();
let allPageTemplates = allPages.filter((pageMeta) =>
pageMeta.name.startsWith(pageTemplatePrefix)
);
let selectedTemplate = await filterBox(
"Template",
allPageTemplates,
"Select the template to create a new page from"
);
if (!selectedTemplate) {
return;
}
console.log("Selected template", selectedTemplate);
let { text } = await readPage(selectedTemplate.name);
let parseTree = await parseMarkdown(text);
let additionalPageMeta = extractMeta(parseTree, true);
console.log("Page meta", additionalPageMeta);
let pageName = await prompt("Name of new page", additionalPageMeta.name);
if (!pageName) {
return;
}
await invokeFunction(
"server",
"instantiateTemplate",
pageName,
renderToText(parseTree)
);
// let pageText = replaceTemplateVars(, pageName);
// await writePage(pageName, pageText);
await navigate(pageName);
}
export async function instantiateTemplate(pageName: string, text: string) {
let pageText = replaceTemplateVars(text, pageName);
await writePage(pageName, pageText);
}
export async function replaceTemplateVarsCommand() {
let currentPage = await getCurrentPage();
let text = await getText();
await invokeFunction("server", "instantiateTemplate", currentPage, text);
}
export function replaceTemplateVars(s: string, pageName: string): string {
return s.replaceAll(/\{\{([^\}]+)\}\}/g, (match, v) => {
if (v === "today") {
return niceDate(new Date());
}
if (v.startsWith("placeholder:")) {
// Dispatch event, to be replaced in the file async later
dispatch(v, {
pageName: pageName,
placeholder: v,
}).catch((e) => {
console.error("Failed to dispatch placeholder event", e);
});
}
return match;
});
}