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refactor: move setupThumbnail() and its helper functions to a dedicat…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| import { assertNever } from "assert-never"; | ||
| import { | ||
| videoInfo, | ||
| setupPlyr, | ||
| Host, | ||
| setupIFrame, | ||
| playButtonHtml, | ||
| } from "./videoHostTools"; | ||
| import https from "https"; | ||
|
|
||
| export async function setupThumbnail( | ||
| container: HTMLDivElement, | ||
| info: videoInfo, | ||
| ): Promise<void> { | ||
| const { id: videoId } = info; | ||
|
|
||
| let thumbnailUrl: string | null; | ||
| let fakePlayHandler: typeof PlyrHandler; | ||
| function PlyrHandler() { | ||
| const player = setupPlyr(container, info); | ||
| player.once("ready", function (evt) { | ||
| this.play(); | ||
| }); | ||
| container.removeChild(thumbnail); | ||
| } | ||
|
|
||
| switch (info.host) { | ||
| case Host.YouTube: | ||
| thumbnailUrl = `https://i.ytimg.com/vi/${videoId}/maxresdefault.jpg`; | ||
| fakePlayHandler = PlyrHandler; | ||
| break; | ||
| case Host.Bilibili: | ||
| if (info.id.startsWith("av")) | ||
| thumbnailUrl = await fetchBiliThumbnail(+info.id.substring(2)); | ||
| else thumbnailUrl = await fetchBiliThumbnail(info.id); | ||
| fakePlayHandler = () => { | ||
| setupIFrame(container, info); | ||
| container.removeChild(thumbnail); | ||
| }; | ||
| break; | ||
| case Host.Vimeo: | ||
| thumbnailUrl = await fetchVimeoThumbnail(info.src); | ||
| fakePlayHandler = PlyrHandler; | ||
| break; | ||
| default: | ||
| assertNever(info.host); | ||
| } | ||
|
|
||
| const thumbnail = createDiv( | ||
| { | ||
| cls: ["thumbnail", "plyr plyr--full-ui plyr--video"], | ||
| }, | ||
| (el) => { | ||
| if (thumbnailUrl) el.style.backgroundImage = `url("${thumbnailUrl}")`; | ||
| el.appendChild( | ||
| createEl( | ||
| "button", | ||
| { | ||
| cls: "plyr__control plyr__control--overlaid", | ||
| attr: { | ||
| type: "button", | ||
| "data-plyr": "play", | ||
| "aria-label": "Play", | ||
| }, | ||
| }, | ||
| (button) => { | ||
| button.innerHTML = playButtonHtml; | ||
| button.onClickEvent(fakePlayHandler); | ||
| }, | ||
| ), | ||
| ); | ||
| }, | ||
| ); | ||
|
|
||
| container.appendChild(thumbnail); | ||
| } | ||
|
|
||
| async function fetchVimeoThumbnail(url: string | URL): Promise<string | null> { | ||
| const api = new URL("https://vimeo.com/api/oembed.json"); | ||
| if (typeof url === "string") api.searchParams.append("url", url); | ||
| else api.searchParams.append("url", url.href); | ||
|
|
||
| return fetch(api.href) | ||
| .then((response) => { | ||
| if (!response.ok) throw new Error(response.statusText); | ||
| else return response.json(); | ||
| }) | ||
| .then((data) => { | ||
| return (data.thumbnail_url as string) ?? null; | ||
| }) | ||
| .catch((e) => { | ||
| console.error(e); | ||
| return null; | ||
| }); | ||
| } | ||
|
|
||
| async function fetchBiliThumbnail(aid: number): Promise<string | null>; | ||
| async function fetchBiliThumbnail(bvid: string): Promise<string | null>; | ||
| async function fetchBiliThumbnail(id: string | number): Promise<string | null> { | ||
| const api = new URL("http://api.bilibili.com/x/web-interface/view"); | ||
| if (typeof id === "string") api.searchParams.append("bvid", id); | ||
| else api.searchParams.append("aid", "av" + id); | ||
|
|
||
| const options = { | ||
| method: "GET", | ||
| hostname: api.hostname, | ||
| port: null, | ||
| path: api.pathname + api.search, | ||
| headers: { | ||
| Origin: "https://www.bilibili.com", | ||
| Referer: "https://www.bilibili.com", | ||
| "Content-Length": "0", | ||
| }, | ||
| }; | ||
|
|
||
| const request = httpRequest(options); | ||
|
|
||
| return request | ||
| .then((json) => { | ||
| if (json.code !== 0) throw new Error(`${json.code}: ${json.message}`); | ||
| else { | ||
| return (json.data.pic as string) ?? null; | ||
| } | ||
| }) | ||
| .catch((e) => { | ||
| console.error(e); | ||
| return null; | ||
| }); | ||
| } | ||
|
|
||
| function httpRequest( | ||
| options: string | https.RequestOptions | URL, | ||
| postData?: any, | ||
| ): Promise<any> { | ||
| return new Promise<any>((resolve, reject) => { | ||
| var req = https.request(options, (res) => { | ||
| // reject on bad status | ||
| if (!res.statusCode || res.statusCode < 200 || res.statusCode >= 300) { | ||
| return reject(new Error("statusCode=" + res.statusCode)); | ||
| } | ||
| // cumulate data | ||
| const body: any[] = []; | ||
| res.on("data", function (chunk) { | ||
| body.push(chunk); | ||
| }); | ||
| // resolve on end | ||
| res.on("end", function () { | ||
| try { | ||
| const obj: any = JSON.parse(Buffer.concat(body).toString()); | ||
| resolve(obj); | ||
| } catch (e) { | ||
| reject(e); | ||
| } | ||
| }); | ||
| }); | ||
| // reject on request error | ||
| req.on("error", function (err) { | ||
| // This is not a "Second reject", just a different sort of failure | ||
| reject(err); | ||
| }); | ||
| if (postData) { | ||
| req.write(postData); | ||
| } | ||
| // IMPORTANT | ||
| req.end(); | ||
| }); | ||
| } |
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