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feat: Discriminated unions for interstitials type (#139)
* Added discriminated unions for interstitials type * Added assetList type * Added timeline style * Added tests * New interstitials API * Fix snapshots
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,114 +1,118 @@ | ||
| import { createUrl } from "./lib/url"; | ||
| import { fetchDuration } from "./playlist"; | ||
| import { getAdMediasFromVast } from "./vast"; | ||
| import { getAssetsFromVast } from "./vast"; | ||
| import type { DateRange } from "./parser"; | ||
| import type { Session } from "./session"; | ||
| import type { Interstitial, InterstitialAssetType } from "./types"; | ||
| import type { Interstitial, InterstitialAsset } from "./types"; | ||
| import type { DateTime } from "luxon"; | ||
|
|
||
| export function getStaticDateRanges(session: Session, isLive: boolean) { | ||
| const group: { | ||
| dateTime: DateTime; | ||
| types: InterstitialAssetType[]; | ||
| }[] = []; | ||
|
|
||
| for (const interstitial of session.interstitials) { | ||
| let item = group.find((item) => | ||
| item.dateTime.equals(interstitial.dateTime), | ||
| ); | ||
|
|
||
| if (!item) { | ||
| item = { | ||
| dateTime: interstitial.dateTime, | ||
| types: [], | ||
| }; | ||
| group.push(item); | ||
| } | ||
|
|
||
| const type = getInterstitialType(interstitial); | ||
| if (type && !item.types.includes(type)) { | ||
| item.types.push(type); | ||
| } | ||
| } | ||
|
|
||
| return group.map((item) => { | ||
| const assetListUrl = createAssetListUrl({ | ||
| dateTime: item.dateTime, | ||
| session, | ||
| }); | ||
| return session.interstitials.map<DateRange>((interstitial) => { | ||
| const startDate = interstitial.dateTime; | ||
| const assetListUrl = getAssetListUrl(interstitial, session); | ||
|
|
||
| const clientAttributes: Record<string, number | string> = { | ||
| RESTRICT: "SKIP,JUMP", | ||
| "ASSET-LIST": assetListUrl, | ||
| CUE: "ONCE", | ||
| "CONTENT-MAY-VARY": "YES", | ||
| "TIMELINE-OCCUPIES": "POINT", | ||
| "TIMELINE-STYLE": getTimelineStyle(interstitial), | ||
| }; | ||
|
|
||
| if (!isLive) { | ||
| clientAttributes["RESUME-OFFSET"] = 0; | ||
| } | ||
|
|
||
| const isPreroll = item.dateTime.equals(session.startTime); | ||
| if (isPreroll) { | ||
| clientAttributes["CUE"] += ",PRE"; | ||
| const cue: string[] = ["ONCE"]; | ||
| if (startDate.equals(session.startTime)) { | ||
| cue.push("PRE"); | ||
| } | ||
|
|
||
| if (item.types.length) { | ||
| clientAttributes["SPRS-TYPES"] = item.types.join(","); | ||
| if (cue.length) { | ||
| clientAttributes["CUE"] = cue.join(","); | ||
| } | ||
|
|
||
| return { | ||
| classId: "com.apple.hls.interstitial", | ||
| id: `${item.dateTime.toUnixInteger()}`, | ||
| startDate: item.dateTime, | ||
| id: `${startDate.toMillis()}`, | ||
| startDate, | ||
| clientAttributes, | ||
| }; | ||
| }); | ||
| } | ||
|
|
||
| export async function getAssets(session: Session, dateTime: DateTime) { | ||
| const assets: { | ||
| URI: string; | ||
| DURATION: number; | ||
| "SPRS-TYPE"?: InterstitialAssetType; | ||
| }[] = []; | ||
| const assets: InterstitialAsset[] = []; | ||
|
|
||
| const interstitials = session.interstitials.filter((interstitial) => | ||
| const interstitial = session.interstitials.find((interstitial) => | ||
| interstitial.dateTime.equals(dateTime), | ||
| ); | ||
|
|
||
| if (interstitial?.vast) { | ||
| const nextAssets = await getAssetsFromVast(interstitial.vast); | ||
| assets.push(...nextAssets); | ||
| } | ||
|
|
||
| if (interstitial?.assets) { | ||
| assets.push(...interstitial.assets); | ||
| } | ||
|
|
||
| return assets; | ||
| } | ||
|
|
||
| export function appendInterstitials( | ||
| source: Interstitial[], | ||
| interstitials: Interstitial[], | ||
| ) { | ||
| for (const interstitial of interstitials) { | ||
| const adMedias = await getAdMediasFromVast(interstitial); | ||
| for (const adMedia of adMedias) { | ||
| assets.push({ | ||
| URI: adMedia.masterUrl, | ||
| DURATION: adMedia.duration, | ||
| "SPRS-TYPE": "ad", | ||
| }); | ||
| const target = source.find((item) => | ||
| item.dateTime.equals(interstitial.dateTime), | ||
| ); | ||
|
|
||
| if (!target) { | ||
| source.push(interstitial); | ||
| continue; | ||
| } | ||
|
|
||
| if (interstitial.asset) { | ||
| assets.push({ | ||
| URI: interstitial.asset.url, | ||
| DURATION: await fetchDuration(interstitial.asset.url), | ||
| "SPRS-TYPE": interstitial.asset.type, | ||
| }); | ||
| if (interstitial.assets) { | ||
| if (!target.assets) { | ||
| target.assets = interstitial.assets; | ||
| } else { | ||
| target.assets.push(...interstitial.assets); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return assets; | ||
| if (interstitial.vast) { | ||
| target.vast = interstitial.vast; | ||
| } | ||
|
|
||
| if (interstitial.assetList) { | ||
| target.assetList = interstitial.assetList; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| function createAssetListUrl(params: { dateTime: DateTime; session?: Session }) { | ||
| function getAssetListUrl(interstitial: Interstitial, session?: Session) { | ||
| if (interstitial.assetList) { | ||
| return interstitial.assetList.url; | ||
| } | ||
| return createUrl("out/asset-list.json", { | ||
| dt: params.dateTime.toISO(), | ||
| sid: params.session?.id, | ||
| dt: interstitial.dateTime.toISO(), | ||
| sid: session?.id, | ||
| }); | ||
| } | ||
|
|
||
| function getInterstitialType( | ||
| interstitial: Interstitial, | ||
| ): InterstitialAssetType | undefined { | ||
| if (interstitial.vastData || interstitial.vastUrl) { | ||
| return "ad"; | ||
| function getTimelineStyle(interstitial: Interstitial) { | ||
| if (interstitial.assets) { | ||
| for (const asset of interstitial.assets) { | ||
| if (asset.kind === "ad") { | ||
| return "HIGHLIGHT"; | ||
| } | ||
| } | ||
| } | ||
| return interstitial.asset?.type; | ||
|
|
||
| if (interstitial.vast) { | ||
| return "HIGHLIGHT"; | ||
| } | ||
|
|
||
| return "PRIMARY"; | ||
| } |
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