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Manav Rathi 2024-05-04 13:24:58 +05:30
parent 8b75393ea0
commit bf66697bcb
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2 changed files with 53 additions and 123 deletions
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152
web/apps/cast/src/pages/slideshow.tsx
View file

@ -3,113 +3,57 @@ import { PairedSuccessfullyOverlay } from "components/PairedSuccessfullyOverlay"
import { SlideView } from "components/Slide";
import { useRouter } from "next/router";
import { useEffect, useState } from "react";
import { readCastData, renderableURLs } from "services/cast";
import { readCastData, renderableImageURLs } from "services/cast";
export default function Slideshow() {
const [loading, setLoading] = useState(true);
const [castToken, setCastToken] = useState<string>("");
// const [castCollection, setCastCollection] = useState<
// Collection | undefined
// >();
// const [collectionFiles, setCollectionFiles] = useState<EnteFile[]>([]);
// const [currentFileId, setCurrentFileId] = useState<number | undefined>();
const [currentFileURL, setCurrentFileURL] = useState<string | undefined>();
const [nextFileURL, setNextFileURL] = useState<string | undefined>();
const [urlGenerator, setURLGenerator] = useState<
AsyncGenerator | undefined
>();
// const [canCast, setCanCast] = useState(false);
const [imageURL, setImageURL] = useState<string | undefined>();
const [nextImageURL, setNextImageURL] = useState<string | undefined>();
const router = useRouter();
// eslint-disable-next-line @typescript-eslint/no-unused-vars
const syncCastFiles = async (token: string) => {
try {
setURLGenerator(renderableURLs(readCastData()));
// setCanCast(true);
setLoading(false);
} catch (e) {
log.error("Failed to prepare URL generator", e);
// Go back to pairing page
router.push("/");
}
};
const advance = async () => {
console.log("in advance");
if (!urlGenerator) throw new Error("Unexpected state");
const { value: urls, done } = await urlGenerator.next();
if (done) {
log.warn("Empty collection");
// Go back to pairing page
router.push("/");
return;
}
setCurrentFileURL(urls[0]);
setNextFileURL(urls[1]);
};
/*
const syncCastFiles0 = async (token: string) => {
try {
const { castToken, collectionKey } = readCastData();
const collection = await getCastCollection(
collectionKey,
castToken,
);
if (
castCollection === undefined ||
castCollection.updationTime !== collection.updationTime
) {
setCastCollection(collection);
await syncPublicFiles(token, collection, () => {});
const files = await getLocalFiles(String(collection.id));
setCollectionFiles(
files.filter((file) => isFileEligibleForCast(file)),
);
}
} catch (e) {
log.error("error during sync", e);
// go back to preview page
router.push("/");
}
};
*/
useEffect(() => {
if (castToken) {
const intervalId = setInterval(() => {
syncCastFiles(castToken);
}, 10000);
syncCastFiles(castToken);
return () => clearInterval(intervalId);
}
}, [castToken]);
/** Go back to pairing page */
const pair = () => router.push("/");
useEffect(() => {
let urlGenerator: AsyncGenerator<[string, string], void>;
try {
const castToken = window.localStorage.getItem("castToken");
// Wait 2 seconds to ensure the green tick and the confirmation
// message remains visible for at least 2 seconds before we start
// the slideshow.
const timeoutId = setTimeout(() => {
setCastToken(castToken);
}, 2000);
return () => clearTimeout(timeoutId);
urlGenerator = renderableImageURLs(readCastData());
} catch (e) {
log.error("error during sync", e);
router.push("/");
log.error("Failed to prepare generator", e);
pair();
}
advance(urlGenerator);
const interval = window.setInterval(() => {
advance(urlGenerator);
}, 10000);
return () => clearInterval(interval);
}, []);
/*
useEffect(() => {
if (collectionFiles.length < 1) return;
showNextSlide();
}, [collectionFiles]);
const advance = async (
urlGenerator: AsyncGenerator<[string, string], void>,
) => {
try {
const { value: urls, done } = await urlGenerator.next();
if (done) {
log.warn("Empty collection");
pair();
return;
}
setImageURL(urls[0]);
setNextImageURL(urls[1]);
setLoading(false);
} catch (e) {
log.error("Failed to generate image URL", e);
pair();
}
};
/*
const showNextSlide = async () => {
try {
console.log("showNextSlide");
@ -168,25 +112,7 @@ export default function Slideshow() {
};
*/
useEffect(() => {
if (loading) return;
if (loading) return <PairedSuccessfullyOverlay />;
console.log("showing slide");
const timeoutId = window.setTimeout(() => {
console.log("showing next slide timer");
// showNextSlide();
advance();
}, 10000);
return () => {
if (timeoutId) clearTimeout(timeoutId);
};
}, [loading]);
console.log({ a: "render", loading, currentFileURL, nextFileURL });
if (loading || !currentFileURL || !nextFileURL)
return <PairedSuccessfullyOverlay />;
return <SlideView url={currentFileURL} nextURL={nextFileURL} />;
return <SlideView url={imageURL} nextURL={nextImageURL} />;
}

24
web/apps/cast/src/services/cast.ts
View file

@ -63,28 +63,31 @@ export const readCastData = (): CastData => {
return { collectionKey, castToken };
};
type RenderableImageURLPair = [url: string, nextURL: string];
/**
* An async generator function that loops through all the files in the
* collection, returning renderable URLs to each that can be displayed in a
* slideshow.
*
* Each time it resolves with a pair of URLs, one for the current slideshow
* image, and one for the image to be displayed next.
* Each time it resolves with a pair of URLs (a {@link RenderableImageURLPair}),
* one for the current slideshow image, and one for the slideshow image that
* will be displayed next.
*
* If there are no renderable image in the collection, the sequence ends by
* yielding `{done: true}`.
*
* Once it reaches the end of the collection, it starts from the beginning
* again.
* again. So the sequence will continue indefinitely for non-empty collections.
*
* It ignores errors in the fetching and decoding of individual images in the
* collection, and just moves onward to the next one. It will however throw if
* there are errors in getting the collection itself.
*
* If there are no renderable image in the collection, the sequence ends by
* yielding `done: true`.
* there are errors when getting the collection itself.
*
* @param castData The collection to show and credentials to fetch the files
* within it.
*/
export const renderableURLs = async function* (castData: CastData) {
export const renderableImageURLs = async function* (castData: CastData) {
const { collectionKey, castToken } = castData;
let previousURL: string | undefined;
while (true) {
@ -93,15 +96,16 @@ export const renderableURLs = async function* (castData: CastData) {
const allFiles = await getLocalFiles(String(collection.id));
const files = allFiles.filter((file) => isFileEligibleForCast(file));
if (!files.length) return;
for (const file of files) {
console.log("in generator", previousURL);
if (!previousURL) {
previousURL = await createRenderableURL(castToken, file);
continue;
}
const url = await createRenderableURL(castToken, file);
const urls = [previousURL, url];
const urls: RenderableImageURLPair = [previousURL, url];
previousURL = url;
yield urls;
}