Files
community-rule/app/(app)/create/SignedInDraftHydration.tsx
T
2026-04-18 14:12:49 -06:00

125 lines
4.0 KiB
TypeScript

"use client";
import { useEffect, useRef, useState } from "react";
import { useSearchParams } from "next/navigation";
import type { CreateFlowState } from "./types";
import { createFlowStateHasKeys } from "../../../lib/create/draftHydrationUtils";
import {
clearAnonymousCreateFlowStorage,
hasTransferPendingFlag,
readAnonymousCreateFlowState,
} from "./utils/anonymousDraftStorage";
import { useCreateFlow } from "./context/CreateFlowContext";
import { fetchDraftFromServer } from "../../../lib/create/api";
import messages from "../../../messages/en/index";
const SYNC_ENABLED = process.env.NEXT_PUBLIC_ENABLE_BACKEND_SYNC === "true";
/**
* When sync is on and the user is signed in, fetch `GET /api/drafts/me` once and merge into context.
* Skips when `?syncDraft=1` or transfer-pending — {@link PostLoginDraftTransfer} owns that path.
*
* **Conflict:** If both server draft and `create-flow-anonymous` are non-empty, `window.confirm`
* chooses account draft (OK) vs browser copy (Cancel); browser storage is cleared after resolution.
*/
export function SignedInDraftHydration({
sessionUser,
sessionResolved,
}: {
sessionUser: { id: string; email: string } | null | undefined;
sessionResolved: boolean;
}) {
const searchParams = useSearchParams();
const syncDraftParam = searchParams.get("syncDraft");
const { replaceState, interactionTouched } = useCreateFlow();
const touchedRef = useRef(interactionTouched);
touchedRef.current = interactionTouched;
const [loadingHydration, setLoadingHydration] = useState(false);
const finishedUserIdRef = useRef<string | null>(null);
useEffect(() => {
if (!SYNC_ENABLED) return;
if (!sessionResolved) return;
if (sessionUser == null || sessionUser === undefined) {
finishedUserIdRef.current = null;
return;
}
const userId = sessionUser.id;
if (finishedUserIdRef.current === userId) return;
if (syncDraftParam === "1" || hasTransferPendingFlag()) {
finishedUserIdRef.current = userId;
return;
}
let cancelled = false;
setLoadingHydration(true);
void (async () => {
try {
const serverDraft = await fetchDraftFromServer();
if (cancelled) return;
const localDraft = readAnonymousCreateFlowState();
const hasServer =
serverDraft != null && createFlowStateHasKeys(serverDraft);
const hasLocal = createFlowStateHasKeys(localDraft);
if (touchedRef.current) {
finishedUserIdRef.current = userId;
return;
}
if (hasServer && hasLocal) {
const useAccount =
typeof window !== "undefined" &&
window.confirm(messages.create.draftHydration.conflictPrompt);
if (cancelled) return;
if (useAccount) {
replaceState(serverDraft as CreateFlowState);
} else {
replaceState(localDraft);
}
clearAnonymousCreateFlowStorage();
finishedUserIdRef.current = userId;
return;
}
if (hasServer) {
replaceState(serverDraft as CreateFlowState);
clearAnonymousCreateFlowStorage();
finishedUserIdRef.current = userId;
return;
}
if (hasLocal) {
replaceState(localDraft);
clearAnonymousCreateFlowStorage();
}
finishedUserIdRef.current = userId;
} finally {
if (!cancelled) setLoadingHydration(false);
}
})();
return () => {
cancelled = true;
};
}, [sessionResolved, sessionUser, syncDraftParam, replaceState]);
if (!loadingHydration) return null;
return (
<div
role="status"
aria-live="polite"
className="w-full shrink-0 px-[var(--spacing-measures-spacing-500,20px)] py-[var(--spacing-measures-spacing-200,8px)] md:px-[var(--measures-spacing-1800,64px)] text-center font-inter text-sm text-[var(--color-text-default-secondary,#a3a3a3)]"
>
{messages.create.draftHydration.loadingSavedProgress}
</div>
);
}