73 lines
2.1 KiB
TypeScript
73 lines
2.1 KiB
TypeScript
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import {
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asset,
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datastore,
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mq,
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system,
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} from "@silverbulletmd/silverbullet/syscalls";
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import type { FileMeta } from "@silverbulletmd/silverbullet/types";
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export async function listFiles(): Promise<FileMeta[]> {
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return await asset.listFiles("core");
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}
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export async function readFile(
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name: string,
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): Promise<{ data: Uint8Array; meta: FileMeta }> {
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const text = await asset.readAsset("core", name, "utf8");
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return {
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data: new TextEncoder().encode(text),
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meta: await asset.getFileMeta("core", name),
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};
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}
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export function writeFile(): Promise<FileMeta> {
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throw new Error("Writing std files not supported");
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}
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export function deleteFile(): Promise<void> {
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throw new Error("Deleting std files not supported");
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}
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export function getFileMeta(name: string): Promise<FileMeta> {
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return asset.getFileMeta("core", name);
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}
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const stdLibCacheKey = ["stdLibCache"];
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type StdLibCache = Record<string, number>; // page name -> last modified time
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export async function init() {
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let stdLibCache: StdLibCache | undefined = await datastore.get(
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stdLibCacheKey,
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);
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if (!stdLibCache) {
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stdLibCache = {};
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}
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// Iterate over the current file listing, check if any new files have been added, removed or modified
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const newListing = await listFiles();
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// First check for files that were removed
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for (const cachedFile of Object.keys(stdLibCache)) {
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if (!newListing.find((f) => f.name === cachedFile)) {
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console.log(`Clearing index for removed file ${cachedFile}`);
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await system.invokeFunction("index.clearDSIndex", cachedFile);
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delete stdLibCache[cachedFile];
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}
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}
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// Then check for new/modified files
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for (const file of newListing) {
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const lastModified = file.lastModified;
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// Check if file is new or modified compared to cache
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if (!stdLibCache[file.name] || stdLibCache[file.name] !== lastModified) {
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// console.log(`Queuing for indexing ${file.name}`);
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await system.invokeFunction("index.clearDSIndex", file.name);
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await mq.send("indexQueue", file.name);
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stdLibCache[file.name] = lastModified;
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}
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}
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// Save updated cache
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await datastore.set(stdLibCacheKey, stdLibCache);
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}
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