139 lines
3.7 KiB
TypeScript
139 lines
3.7 KiB
TypeScript
import { IndexTreeEvent, QueryProviderEvent } from "$sb/app_event.ts";
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import { renderToText } from "$sb/lib/tree.ts";
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import { store } from "$sb/plugos-syscall/mod.ts";
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import { applyQuery } from "$sb/lib/query.ts";
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import { editor, index } from "$sb/silverbullet-syscall/mod.ts";
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import { base64EncodedDataUrl } from "../../plugos/asset_bundle/base64.ts";
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import { BatchKVStore, SimpleSearchEngine } from "./engine.ts";
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import { FileMeta } from "../../common/types.ts";
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const searchPrefix = "🔍 ";
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class StoreKVStore implements BatchKVStore<string, string[]> {
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constructor(private prefix: string) {
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}
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get(keys: string[]): Promise<(string[] | undefined)[]> {
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return store.batchGet(keys.map((key) => this.prefix + key));
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}
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set(entries: Map<string, string[]>): Promise<void> {
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return store.batchSet(
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Array.from(entries.entries()).map((
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[key, value],
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) => ({ key: this.prefix + key, value })),
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);
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}
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delete(keys: string[]): Promise<void> {
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return store.batchDel(keys.map((key) => this.prefix + key));
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}
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}
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const engine = new SimpleSearchEngine(
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new StoreKVStore("fts:"),
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new StoreKVStore("fts_rev:"),
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);
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export async function indexPage({ name, tree }: IndexTreeEvent) {
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const text = renderToText(tree);
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// console.log("Now FTS indexing", name);
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await engine.deleteDocument(name);
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await engine.indexDocument({ id: name, text });
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}
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export async function clearIndex() {
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await store.deletePrefix("fts:");
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await store.deletePrefix("fts_rev:");
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}
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export async function pageUnindex(pageName: string) {
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await engine.deleteDocument(pageName);
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}
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export async function queryProvider({
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query,
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}: QueryProviderEvent): Promise<any[]> {
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const phraseFilter = query.filter.find((f) => f.prop === "phrase");
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if (!phraseFilter) {
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throw Error("No 'phrase' filter specified, this is mandatory");
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}
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let results: any[] = await engine.search(phraseFilter.value);
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// Patch the object to a format that users expect (translate id to name)
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for (const r of results) {
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r.name = r.id;
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delete r.id;
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}
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const allPageMap: Map<string, any> = new Map(
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results.map((r: any) => [r.name, r]),
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);
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for (const { page, value } of await index.queryPrefix("meta:")) {
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const p = allPageMap.get(page);
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if (p) {
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for (const [k, v] of Object.entries(value)) {
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p[k] = v;
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}
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}
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}
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// Remove the "phrase" filter
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query.filter.splice(query.filter.indexOf(phraseFilter), 1);
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results = applyQuery(query, results);
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return results;
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}
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export async function searchCommand() {
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const phrase = await editor.prompt("Search for: ");
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if (phrase) {
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await editor.navigate(`${searchPrefix}${phrase}`);
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}
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}
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export async function readFileSearch(
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name: string,
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): Promise<{ data: string; meta: FileMeta }> {
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const phrase = name.substring(
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searchPrefix.length,
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name.length - ".md".length,
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);
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const results = await engine.search(phrase);
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const text = `# Search results for "${phrase}"\n${
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results
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.map((r) => `* [[${r.id}]] (score ${r.score})`)
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.join("\n")
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}
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`;
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return {
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// encoding === "arraybuffer" is not an option, so either it's "utf8" or "dataurl"
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data: base64EncodedDataUrl(
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"text/markdown",
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new TextEncoder().encode(text),
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),
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meta: {
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name,
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contentType: "text/markdown",
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size: text.length,
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lastModified: 0,
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perm: "ro",
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},
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};
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}
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export function writeFileSearch(
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name: string,
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): FileMeta {
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// Never actually writing this
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return getFileMetaSearch(name);
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}
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export function getFileMetaSearch(name: string): FileMeta {
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return {
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name,
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contentType: "text/markdown",
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size: -1,
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lastModified: 0,
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perm: "ro",
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};
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}
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