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This commit is contained in:
Manav Rathi 2024-05-08 13:24:06 +05:30
parent b7734406b8
commit 816f8cecd6
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1 changed files with 20 additions and 22 deletions
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42
web/apps/cast/src/pages/index.tsx
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@ -11,30 +11,27 @@ export default function Index() {
const [publicKeyB64, setPublicKeyB64] = useState<string | undefined>();
const [privateKeyB64, setPrivateKeyB64] = useState<string | undefined>();
const [pairingCode, setPairingCode] = useState<string | undefined>();
// TODO: This needs to change, since there is an interim period when the
// code becomes invalid.
// Keep a boolean flag to ensure that Cast Receiver starts only once even if
// pairing codes change.
const [haveInitializedCast, setHaveInitializedCast] = useState(false);
const router = useRouter();
useEffect(() => {
init();
}, []);
const init = () => {
register().then((r) => {
setPublicKeyB64(r.publicKeyB64);
setPrivateKeyB64(r.privateKeyB64);
setPairingCode(r.pairingCode);
});
};
useEffect(() => {
if (pairingCode && !haveInitializedCast) {
castReceiverLoadingIfNeeded().then((cast) => {
setHaveInitializedCast(true);
advertiseCode(cast, () => pairingCode);
if (!pairingCode) {
register().then((r) => {
setPublicKeyB64(r.publicKeyB64);
setPrivateKeyB64(r.privateKeyB64);
setPairingCode(r.pairingCode);
});
} else {
if (!haveInitializedCast) {
castReceiverLoadingIfNeeded().then((cast) => {
setHaveInitializedCast(true);
advertiseCode(cast, () => pairingCode);
});
}
}
}, [pairingCode]);
@ -58,11 +55,12 @@ export default function Index() {
storeCastData(data);
await router.push("/slideshow");
} catch (e) {
// Code has become invalid
log.error("Failed to get cast data", e);
// Start again from the beginning.
// The pairing code becomes invalid after an hour, which will cause
// `getCastData` to fail. There might be other reasons this might
// fail too, but in all such cases, it is a reasonable idea to start
// again from the beginning.
log.warn("Failed to get cast data", e);
setPairingCode(undefined);
init();
}
};