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import { Button, Spinner } from "react-bootstrap";
import { useParams, useNavigate } from "react-router";
import { useInfiniteQuery } from "react-query";
import axios from "axios";
import BasicLayout from "main/layouts/BasicLayout/BasicLayout";
import ChatMessageDisplay from "main/components/Chat/ChatMessageDisplay";
import { useBackend } from "main/utils/useBackend";
const PAGE_SIZE = 25;
const REFRESH_RATE = 2000;
const AdminChatPage = () => {
const { commonsId } = useParams();
const navigate = useNavigate();
const loadMoreRef = useRef(null);
const { data: userCommonsList } = useBackend(
[`/api/usercommons/commons/all?commonsId=${commonsId}`],
{
method: "GET",
url: "/api/usercommons/commons/all",
params: {
commonsId: commonsId,
},
},
[],
{ refetchInterval: REFRESH_RATE, enabled: !!commonsId },
);
const hasValidUserCommons = Array.isArray(userCommonsList);
const userIdToUsername = hasValidUserCommons
? userCommonsList.reduce((acc, user) => {
acc[user.userId] = user.username || "";
return acc;
}, {})
: {};
const fetchChatPage = async ({ pageParam = 0 }) => {
const response = await axios.get("/api/chat/admin/get", {
params: {
commonsId: commonsId,
page: pageParam,
size: PAGE_SIZE,
},
});
return response.data;
};
const {
data,
status,
fetchNextPage,
hasNextPage,
isFetching,
isFetchingNextPage,
} = useInfiniteQuery(["adminChatHistory", commonsId], fetchChatPage, {
getNextPageParam: (lastPage, pages) =>
lastPage?.last === false ? pages.length : undefined,
refetchInterval: REFRESH_RATE,
enabled: !!commonsId,
});
useEffect(() => {
if (!hasNextPage) {
return;
}
const observer = new IntersectionObserver(
(entries) => {
if (entries[0].isIntersecting && hasNextPage && !isFetchingNextPage) {
fetchNextPage();
}
},
{
threshold: 1.0,
},
);
const currentRef = loadMoreRef.current;
observer.observe(currentRef);
return () => {
observer.unobserve(currentRef);
};
}, [fetchNextPage, hasNextPage, isFetchingNextPage]);
const messages = Array.isArray(data?.pages)
? data.pages.flatMap((page) => {
if (!page || !Array.isArray(page.content)) {
return [];
}
return page.content.map((message) => ({
...message,
username: userIdToUsername[message.userId],
}));
})
: [];
const isInitialLoading = status === "loading";
const showError = status === "error";
return (
<BasicLayout>
<div className="pt-3" data-testid="AdminChatPage">
<Button
variant="secondary"
className="mb-3"
onClick={() => navigate(-1)}
data-testid="AdminChatPage-back"
>
Back
</Button>
<div className="d-flex justify-content-between align-items-center mb-3">
<h2 className="mb-0">Chat History (Admin View)</h2>
<span className="text-muted">Commons #{commonsId}</span>
</div>
<div
style={{
minHeight: "50vh",
maxHeight: "70vh",
overflowY: "auto",
border: "1px solid #dee2e6",
borderRadius: "0.5rem",
padding: "1rem",
backgroundColor: "white",
}}
data-testid="AdminChatPage-message-container"
>
{isInitialLoading && (
<div className="text-center my-3">
<Spinner animation="border" role="status" size="sm" /> Loading
messages...
</div>
)}
{showError && (
<div className="text-center text-danger my-3">
Unable to load chat messages.
</div>
)}
{!isInitialLoading && messages.length === 0 && (
<div className="text-center text-muted my-3">
No messages available for this commons.
</div>
)}
{messages.map((message) => (
<ChatMessageDisplay key={message.id} message={message} />
))}
<div
ref={loadMoreRef}
className="text-center text-muted mt-3"
data-testid="AdminChatPage-status"
>
{isFetchingNextPage
? "Loading more messages..."
: hasNextPage
? "Scroll to load more messages"
: "[no more messages]"}
</div>
</div>
{isFetching && !isFetchingNextPage && (
<div className="text-center text-muted mt-2">
Updating conversation...
</div>
)}
</div>
</BasicLayout>
);
};
export default AdminChatPage;
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