session.ts
| 1 | import { createContext, useContext } from "solid-js"; |
| 2 | import type { Accessor } from "solid-js"; |
| 3 | import type { Me, PersonState } from "./api"; |
| 4 | |
| 5 | /** |
| 6 | * What the routed pages need from the shell. |
| 7 | * |
| 8 | * A context rather than props because route components are constructed by the |
| 9 | * router and cannot be handed anything. It holds the *live* store, so both pages |
| 10 | * share one polling loop rather than starting one each. |
| 11 | */ |
| 12 | export interface SessionValue { |
| 13 | me: Me; |
| 14 | people: Record<number, PersonState>; |
| 15 | order: Accessor<number[]>; |
| 16 | serverTime: Accessor<number>; |
| 17 | selected: Accessor<number | null>; |
| 18 | select: (id: number) => void; |
| 19 | trail: Accessor<[number, number][] | null>; |
| 20 | } |
| 21 | |
| 22 | export const SessionContext = createContext<SessionValue>(); |
| 23 | |
| 24 | export function useSession(): SessionValue { |
| 25 | const value = useContext(SessionContext); |
| 26 | if (!value) throw new Error("useSession outside the shell"); |
| 27 | return value; |
| 28 | } |
| 29 |