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🍘 ctxFromURL runs once for the same url at a time

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Shiba 2022-01-09 13:12:05 +00:00
parent 475c38ba0c
commit b750c86b88
1 changed files with 12 additions and 5 deletions
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17
src/scripts/tabOnUpdated.ts
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@ -16,6 +16,7 @@ async function resolveYT(descriptor: YtIdResolverDescriptor) {
return segments.join('/'); return segments.join('/');
} }
const ctxFromURLOnGoingPromise: Record<string, Promise<UpdateContext | void>> = {}
async function ctxFromURL(href: string): Promise<UpdateContext | void> { async function ctxFromURL(href: string): Promise<UpdateContext | void> {
if (!href) return; if (!href) return;
@ -26,12 +27,18 @@ async function ctxFromURL(href: string): Promise<UpdateContext | void> {
const descriptor = ytService.getId(href); const descriptor = ytService.getId(href);
if (!descriptor) return; // couldn't get the ID, so we're done if (!descriptor) return; // couldn't get the ID, so we're done
// NOTE: API call cached by resolveYT method automatically // Don't create a new Promise for same ID until on going one is over.
const res = await resolveYT(descriptor); const promise = ctxFromURLOnGoingPromise[descriptor.id] ?? (ctxFromURLOnGoingPromise[descriptor.id] = (async () => {
if (!res) return; // couldn't find it on lbry, so we're done // NOTE: API call cached by resolveYT method automatically
const res = await resolveYT(descriptor)
if (!res) return // couldn't find it on lbry, so we're done
const { redirect, targetPlatform } = await getExtensionSettingsAsync('redirect', 'targetPlatform'); const { redirect, targetPlatform } = await getExtensionSettingsAsync('redirect', 'targetPlatform')
return { descriptor, lbryPathname: res, redirect, targetPlatform }; return { descriptor, lbryPathname: res, redirect, targetPlatform }
})())
await promise
delete ctxFromURLOnGoingPromise[descriptor.id]
return await promise
} }
// handles lbry.tv -> lbry app redirect // handles lbry.tv -> lbry app redirect