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Code Issues Releases Wiki Activity

Rewrite youtube.com links to the same instance and implement timestamp links in videos description

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Lomanic 2021-02-20 03:39:27 +01:00 committed by Cadence Ember
parent 47da5e815b
commit 406e04b7b0
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1 changed files with 21 additions and 0 deletions
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21
api/video.js
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@ -5,6 +5,7 @@ const db = require("../utils/db")
const {getToken, getUser} = require("../utils/getuser")
const pug = require("pug")
const converters = require("../utils/converters")
const constants = require("../utils/constants")
class InstanceError extends Error {
constructor(error, identifier) {
@ -36,6 +37,25 @@ function formatOrder(format) {
return -total
}
function rewriteVideoDescription(descriptionHtml, id) {
// replace timestamps to clickable links and rewrite youtube links to stay on the instance instead of pointing to YouTube
// test cases
// https://www.youtube.com/watch?v=VdPsJW6AHqc 00:00 timestamps, youtu.be/<videoid>
// https://www.youtube.com/watch?v=FDMq9ie0ih0 00:00 & 00:00:00 timestamps
// https://www.youtube.com/watch?v=fhum63fAwrI www.youtube.com/watch?v=<videoid>
// https://www.youtube.com/watch?v=i-szWOrc3Mo www.youtube.com/<channelname> (unsupported by cloudtube currently)
// https://www.youtube.com/watch?v=LSG71wbKpbQ www.youtube.com/channel/<id>
descriptionHtml = descriptionHtml.replace(new RegExp(`<a href="https?:\/\/(www\.)?youtu\.be\/(${constants.regex.video_id})([^"]*)">([^<]+)<\/a>`, "g"), `<a href="/watch?v=$2$3">$4</a>`)
descriptionHtml = descriptionHtml.replace(new RegExp(`<a href="https?:\/\/(www\.)?youtu(\.be|be\.com)\/([^"]*)">([^<]+)<\/a>`, "g"), `<a href="/$3">$4</a>`)
descriptionHtml = descriptionHtml.replace(new RegExp(`(?:([0-5]?[0-9]):)?([0-5]?[0-9]):([0-5][0-9])`, "g"), function(match, p1, p2, p3, offset, string){
if (p1 === undefined) {
return `<a href=\"/watch?v=${id}&t=${p2}m${p3}s\">${p2}:${p3}</a>`
}
return `<a href=\"/watch?v=${id}&t=${p1}h${p2}m${p3}s\">${p1}:${p2}:${p3}</a>`
})
return descriptionHtml
}
async function renderVideo(videoPromise, {user, id, instanceOrigin}, locals = {}) {
try {
// resolve video
@ -65,6 +85,7 @@ async function renderVideo(videoPromise, {user, id, instanceOrigin}, locals = {}
if (!video.second__viewCountText && video.viewCount) {
video.second__viewCountText = converters.viewCountToText(video.viewCount)
}
video.descriptionHtml = rewriteVideoDescription(video.descriptionHtml, id)
return render(200, "pug/video.pug", Object.assign(locals, {video, subscribed, instanceOrigin}))
} catch (e) {
// show an appropriate error message