Experiment to rebuild Diffuse using web applets.
1import * as IDB from "idb-keyval";
2
3import { expose, jsonDecode, jsonEncode } from "@scripts/common";
4import type { Track } from "@applets/core/types";
5import { IDB_DEVICE_KEY, IDB_PREFIX } from "./constants";
6
7////////////////////////////////////////////
8// ACTIONS
9////////////////////////////////////////////
10const actions = expose({
11 getTracks,
12 putTracks,
13});
14
15export type Actions = typeof actions;
16
17// Actions
18
19async function getTracks() {
20 const encoded = await get({ name: "tracks.json" });
21 if (!encoded) return [];
22 return jsonDecode<Track[]>(encoded);
23}
24
25async function putTracks(tracks: Track[]) {
26 const data = jsonEncode(tracks);
27 await put({ name: "tracks.json", data });
28}
29
30////////////////////////////////////////////
31// 🛠️
32////////////////////////////////////////////
33
34async function get({ name }: { name: string }) {
35 const handle: FileSystemDirectoryHandle | null = (await IDB.get(IDB_DEVICE_KEY)) ?? null;
36 if (!handle) throw new Error("Storage not configured properly, handle not found.");
37
38 try {
39 const fileHandle = await handle.getFileHandle(name);
40 const file = await fileHandle.getFile();
41 const data = await file.bytes();
42 return data;
43 } catch (err) {
44 return undefined;
45 }
46}
47
48async function put({ data, name }: { data: Uint8Array; name: string }) {
49 const handle: FileSystemDirectoryHandle | null = (await IDB.get(IDB_DEVICE_KEY)) ?? null;
50 if (!handle) throw new Error("Storage not configured properly, handle not found.");
51 const fileHandle = await handle.getFileHandle(name, { create: true });
52 const stream = await fileHandle.createWritable();
53 await stream.write(data);
54 await stream.close();
55}