Experiment to rebuild Diffuse using web applets.
1<script>
2 import { QueueItem, State } from "./types";
3 import { register } from "@scripts/applets/common";
4
5 ////////////////////////////////////////////
6 // SETUP
7 ////////////////////////////////////////////
8 const context = register<State>();
9
10 // Initial state
11 context.data = {
12 past: [],
13 now: null,
14 future: [],
15 };
16
17 // State helpers
18 function update(partial: Partial<State>): void {
19 context.data = { ...context.data, ...partial };
20 }
21
22 ////////////////////////////////////////////
23 // ACTIONS
24 ////////////////////////////////////////////
25 context.setActionHandler("add", add);
26 context.setActionHandler("shift", shift);
27
28 function add(items: QueueItem[]) {
29 update({ future: [...context.data.future, ...items] });
30 }
31
32 function shift() {
33 const now = context.data.future[0] || null;
34 const future = context.data.future.slice(1);
35 const past = context.data.now ? [...context.data.past, context.data.now] : context.data.past;
36
37 update({ past, now, future });
38
39 return now;
40 }
41</script>