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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | 1x 1x 1x 1x 14x 14x 14x 14x 14x 7x 7x 7x 3x 7x 7x 14x 14x | import { Alert as MuiAlert } from "@mui/material";
import { usePersistedState } from "platform/usePersistedState";
import React, { useEffect } from "react";
interface GlobalMessageData {
// the unix timestamp (as a string with milliseconds) when the message was issued
epoch: string;
severity: "success" | "info" | "warning" | "error";
message: string;
}
const TIME_BETWEEN_CHECKS_MS = 300_000; // 5 min
export function GlobalMessage() {
// data from the global message file
const [data, setData] = usePersistedState<GlobalMessageData | null>("globalmessage.data", null);
// last time we queried it
const [lastCheck, setLastCheck] = usePersistedState<number | null>("globalmessage.lastcheck", null);
// the epoch value of the last message we dismissed
const [dismissedEpoch, setDismissedEpoch] = usePersistedState<string | null>("globalmessage.dismissed", null);
useEffect(() => {
const fetchData = async () => {
try {
const response = await fetch(process.env.NEXT_PUBLIC_GLOBAL_MESSAGE_URL);
if (!response.ok) {
throw new Error(`HTTP error! Status: ${response.status}`);
}
setData(await response.json());
setLastCheck(new Date().getTime());
} catch (error) {
console.error("Error fetching global message:", error);
}
};
Eif (!lastCheck || new Date().getTime() - lastCheck > TIME_BETWEEN_CHECKS_MS) {
fetchData();
}
}, [setData, setLastCheck, lastCheck]);
const dismiss = () => {
if (!data) return;
setDismissedEpoch(data!.epoch);
};
return data && data.epoch && data.epoch != dismissedEpoch ? (
<MuiAlert severity={data.severity} onClose={dismiss}>
<span dangerouslySetInnerHTML={{ __html: data.message }} />
</MuiAlert>
) : null;
}
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