1 files changed, 175 insertions, 0 deletions
diff --git a/static/index.js b/static/index.js
new file mode 100644
index 0000000..e1c1f41
--- /dev/null
+++ b/static/index.js
@@ -0,0 +1,175 @@
+/* setup player */
+let player
+const titleBar = document.getElementById("title")
+
+function onPlayerReady(event) {
+	document.title = titleBar.textContent = player.videoTitle
+}
+
+function onYouTubeIframeAPIReady() {
+	player = new YT.Player("player", {
+		host: "https://www.youtube-nocookie.com",
+		events: {
+			"onReady": onPlayerReady,
+		},
+	})
+}
+
+/* helpers */
+function getApiReq(path) {
+	return fetch("/api" + path)
+		.then(async res => {
+			if (!res.ok) {
+				const err = await res.text();
+				throw new Error(`Server error: ${err}`);
+			}
+			return res.json()
+		})
+		.then(data => {
+			return data
+		})
+		.catch(error => {
+			console.error("Fetch error:", error)
+		})
+}
+
+function toggleVis(e) {
+	e.style.display = e.style.display ? null : "none"
+	//window.location.hash = e.id && !e.style.display ? e.id : ""
+}
+
+function createAnchors(text) {
+	const urlRegex = /(https?:\/\/[a-zA-Z0-9#$%&-./=?@_~]+[a-zA-Z0-9/]|@[a-zA-Z0-9.-_]+|[0-9]+:[0-9]+)/gi;
+	return text.replace(urlRegex, url => {
+		let href = url
+		if (url[0] == "@") {
+			href = `https://youtube.com/${url}`
+		} else if (parseInt(url[0]) !== NaN) {
+			const ts = url.split(":").reverse()
+			let t = 0
+			for (let i = 0; i < ts.length; i++)
+				t += ts[i] * Math.pow(60, i)
+			href = `https://youtube.com/watch?v=${player.playerInfo.videoData.video_id}&t=${t}`
+		}
+		return `<a href="${href}" target="_blank" rel="noopener noreferrer">${url}</a>`
+	})
+}
+
+/* setup video details buttons */
+const buttonDetails  = document.getElementById("toggle-details")
+const divDetails = document.getElementById("details")
+let detailsLoaded = false
+
+async function toggleDetails() {
+	if (!player)
+		return
+	if (detailsLoaded) {
+		toggleVis(divDetails)
+		return
+	}
+	// elements
+	const channel = document.getElementById("details-channel")
+	const likes   = document.getElementById("details-likes")
+	const views   = document.getElementById("details-views")
+	const date    = document.getElementById("details-date")
+	const desc    = document.getElementById("details-desc")
+	const tags    = document.getElementById("details-tags")
+
+	// req
+	const d = (await getApiReq(`/details?id=${player.playerInfo.videoData.video_id}`)).items[0]
+
+	// populate
+	channel.textContent = d.snippet.channelTitle
+	channel.href = `https://www.youtube.com/channel/${d.snippet.channelId}`
+	views.textContent = new Intl.NumberFormat().format(d.statistics.viewCount)
+	likes.textContent = new Intl.NumberFormat().format(d.statistics.likeCount)
+	date.textContent = d.snippet.publishedAt
+	if (d.snippet.description)
+		desc.innerHTML = createAnchors(d.snippet.description.replaceAll("\n", "<br>"))
+	tags.textContent = d.snippet.tags.join(", ")
+
+	// done
+	detailsLoaded = true
+	toggleVis(divDetails)
+}
+
+/* setup video comments buttons */
+const buttonComments = document.getElementById("toggle-comments")
+const divComments = document.getElementById("comments")
+const commentTemplate = document.getElementById("template-comment")
+let commentsLoaded = false
+
+function genComment(cd, parent, replies) {
+	const c = commentTemplate.content.cloneNode(true)
+
+	const author  = c.querySelector(".author")
+	const date    = c.querySelector(".date")
+	const dateM   = c.querySelector(".date.modified")
+	const body    = c.querySelector(".body")
+	const likes   = c.querySelector(".likes")
+
+	author.textContent = cd.authorDisplayName
+	author.href = cd.authorChannelUrl
+	date.textContent = cd.publishedAt
+	if (cd.publishedAt === cd.updatedAt)
+		dateM.remove()
+	else
+		dateM.textContent = `(Modified ${cd.updatedAt})`
+	body.innerHTML = cd.textDisplay
+	likes.textContent = new Intl.NumberFormat().format(cd.likeCount)
+
+	if (replies) {
+		const divReplies = c.querySelector(".replies")
+		for (const reply of replies)
+			genComment(reply.snippet, divReplies)
+	}
+	parent.append(c)
+}
+
+async function toggleComments() {
+	if (!player)
+		return
+	if (commentsLoaded) {
+		toggleVis(divComments)
+		return
+	}
+
+	// req
+	const d = (await getApiReq(`/comments?id=${player.playerInfo.videoData.video_id }`))
+
+	// populate
+	for (const cdd of d.items) {
+		const cd = cdd.snippet.topLevelComment.snippet
+		const replies = cdd.replies ? cdd.replies.comments : null
+		genComment(cd, divComments, replies)
+	}
+
+	// done
+	commentsLoaded = true
+	toggleVis(divComments)
+}
+
+buttonDetails.addEventListener("click", () => {
+	toggleDetails()
+	toggleComments()
+	buttonDetails.remove()
+})
+
+/* timestamps in comments */
+function timestampLinkClick(e) {
+	if (e.target.tagName !== "A")
+		return
+
+	const url = new URL(e.target.href)
+	if (url.pathname !== "/watch" || url.searchParams.get("v") !== player.playerInfo.videoData.video_id)
+		return
+
+	e.preventDefault()
+
+	const t = url.searchParams.get("t")
+	if (!t)
+		return
+	player.seekTo(t)
+}
+
+document.addEventListener("click", timestampLinkClick)