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import { IconButton, styled, Typography } from "@mui/material";
import { useInfiniteQuery } from "@tanstack/react-query";
import Alert from "components/Alert";
import StyledLink from "components/StyledLink";
import { RpcError } from "grpc-web";
import { Trans, useTranslation } from "i18n";
import { DASHBOARD } from "i18n/namespaces";
import { ListMyEventsRes } from "proto/events_pb";
import { useState } from "react";
import { service } from "service";
import { routeToNewEvent } from "../../routes";
import { myCommunityEventsKey } from "../queryKeys";
import EventListRow, {
EventListContainer,
EventListRowSkeleton,
} from "./EventListRow";
const SectionHeader = styled("div")({
display: "flex",
alignItems: "center",
justifyContent: "space-between",
marginBottom: "8px",
});
const EmptyStateRow = styled("div")(({ theme }) => ({
display: "flex",
alignItems: "center",
gap: theme.spacing(2),
padding: theme.spacing(2),
border: "1px dashed var(--mui-palette-divider)",
borderRadius: 10,
background: "var(--mui-palette-grey-50)",
}));
export default function CommunityEvents() {
const { t } = useTranslation([DASHBOARD]);
const [currentPageIndex, setCurrentPageIndex] = useState(0);
const {
data,
error,
isLoading,
fetchNextPage,
hasNextPage,
isFetchingNextPage,
} = useInfiniteQuery<ListMyEventsRes.AsObject, RpcError>({
queryKey: myCommunityEventsKey("upcoming"),
queryFn: ({ pageParam: pageToken }) =>
service.events.listMyEvents({
pageToken: pageToken as string | undefined,
pageSize: 3,
myCommunities: true,
myCommunitiesExcludeGlobal: true,
excludeAttending: true,
}),
getNextPageParam: (lastPage) =>
lastPage.nextPageToken ? lastPage.nextPageToken : undefined,
initialPageParam: undefined as string | undefined,
});
const pages = data?.pages ?? [];
const isLastLoadedPage =
pages.length === 0 || currentPageIndex === pages.length - 1;
const currentItems = pages[currentPageIndex]?.eventsList;
const hasPrev = currentPageIndex > 0;
const hasForward = !isLastLoadedPage || !!hasNextPage;
const handleNext = () => {
Iif (!isLastLoadedPage) {
setCurrentPageIndex((i) => i + 1);
} else Eif (hasNextPage && !isFetchingNextPage) {
fetchNextPage();
setCurrentPageIndex((i) => i + 1);
}
};
const showingSkeleton =
isLoading || (isFetchingNextPage && currentItems === undefined);
return (
<div>
<SectionHeader>
<Typography
variant="h2"
sx={{ display: "inline-flex", alignItems: "center", gap: 1 }}
>
<Event
sx={{ fontSize: 20, color: "var(--mui-palette-primary-main)" }}
/>
{t("dashboard:events.community_header")}
</Typography>
<div>
<IconButton
size="small"
onClick={() => setCurrentPageIndex((i) => i - 1)}
disabled={!hasPrev}
color={hasPrev ? "primary" : "default"}
aria-label={t("dashboard:prev_page_button_a11y")}
>
<ArrowBack fontSize="small" />
</IconButton>
<IconButton
size="small"
onClick={handleNext}
disabled={!hasForward || isFetchingNextPage}
color={hasForward ? "primary" : "default"}
aria-label={t("dashboard:next_page_button_a11y")}
>
<ArrowForward fontSize="small" />
</IconButton>
</div>
</SectionHeader>
{error && <Alert severity="error">{error.message}</Alert>}
{showingSkeleton ? (
<EventListContainer>
{[0, 1, 2].map((i) => (
<EventListRowSkeleton key={i} />
))}
</EventListContainer>
) : currentItems?.length ? (
<EventListContainer>
{currentItems.map((event) => (
<EventListRow key={event.eventId} event={event} />
))}
</EventListContainer>
) : (
!error && (
<EmptyStateRow>
<Typography
variant="body2"
sx={{ color: "var(--mui-palette-text-secondary)" }}
>
<Trans
t={t}
i18nKey="dashboard:events.your_upcoming_empty_message"
components={[
<StyledLink key="create-link" href={routeToNewEvent()} />,
]}
/>
</Typography>
</EmptyStateRow>
)
)}
</div>
);
}
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