Julius MarmingeT3 Code Mobile [WIP] (#2013)b3e8c035 months agoHistory
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import * as Arr from "effect/Array";import * as Order from "effect/Order";import { useAtomValue } from "@effect/atom-react";import { Atom } from "effect/unstable/reactivity";import {  EMPTY_SHELL_SNAPSHOT_ATOM,  EMPTY_SHELL_SNAPSHOT_STATE,  createShellSnapshotManager,  getShellSnapshotTargetKey,  shellSnapshotStateAtom,  type ShellSnapshotState,} from "@t3tools/client-runtime";import type { EnvironmentId } from "@t3tools/contracts";import { useCallback, useMemo, useRef, useSyncExternalStore } from "react"; import { appAtomRegistry } from "./atom-registry";import type { CachedShellSnapshot } from "../lib/storage"; const cachedShellSnapshotMetadataAtom = Atom.make<  Readonly<Record<EnvironmentId, { readonly snapshotReceivedAt: string }>>>({}).pipe(Atom.keepAlive, Atom.withLabel("mobile:cached-shell-snapshot-metadata")); export const shellSnapshotManager = createShellSnapshotManager({  getRegistry: () => appAtomRegistry,}); export function hydrateCachedShellSnapshot(cached: CachedShellSnapshot): void {  shellSnapshotManager.syncSnapshot({ environmentId: cached.environmentId }, cached.snapshot);  appAtomRegistry.set(cachedShellSnapshotMetadataAtom, {    ...appAtomRegistry.get(cachedShellSnapshotMetadataAtom),    [cached.environmentId]: {      snapshotReceivedAt: cached.snapshotReceivedAt,    },  });} export function markShellSnapshotLive(environmentId: EnvironmentId): void {  const current = appAtomRegistry.get(cachedShellSnapshotMetadataAtom);  if (current[environmentId] === undefined) {    return;  }   const next = { ...current };  delete next[environmentId];  appAtomRegistry.set(cachedShellSnapshotMetadataAtom, next);} export function clearCachedShellSnapshotMetadata(environmentId: EnvironmentId): void {  markShellSnapshotLive(environmentId);} export function useCachedShellSnapshotMetadata(): Readonly<  Record<EnvironmentId, { readonly snapshotReceivedAt: string }>> {  return useAtomValue(cachedShellSnapshotMetadataAtom);} export function useShellSnapshot(environmentId: EnvironmentId | null): ShellSnapshotState {  const targetKey = getShellSnapshotTargetKey({ environmentId });  const state = useAtomValue(    targetKey !== null ? shellSnapshotStateAtom(targetKey) : EMPTY_SHELL_SNAPSHOT_ATOM,  );  return targetKey === null ? EMPTY_SHELL_SNAPSHOT_STATE : state;} export function useShellSnapshotStates(  environmentIds: ReadonlyArray<EnvironmentId>,): Readonly<Record<EnvironmentId, ShellSnapshotState>> {  const stableEnvironmentIds = useMemo(    () => Arr.sort(new Set(environmentIds), Order.String),    [environmentIds],  );  const snapshotCacheRef = useRef<Readonly<Record<EnvironmentId, ShellSnapshotState>>>({});   const subscribe = useCallback(    (onStoreChange: () => void) => {      const unsubs = stableEnvironmentIds.map((environmentId) =>        appAtomRegistry.subscribe(shellSnapshotStateAtom(environmentId), onStoreChange),      );      return () => {        for (const unsub of unsubs) {          unsub();        }      };    },    [stableEnvironmentIds],  );   const getSnapshot = useCallback(() => {    const previous = snapshotCacheRef.current;    let hasChanged = Object.keys(previous).length !== stableEnvironmentIds.length;    const next: Record<EnvironmentId, ShellSnapshotState> = {};     for (const environmentId of stableEnvironmentIds) {      const snapshot = shellSnapshotManager.getSnapshot({ environmentId });      next[environmentId] = snapshot;      if (!hasChanged && previous[environmentId] !== snapshot) {        hasChanged = true;      }    }     if (!hasChanged) {      return previous;    }     snapshotCacheRef.current = next;    return next;  }, [stableEnvironmentIds]);   return useSyncExternalStore(subscribe, getSnapshot, getSnapshot);}