[www.youtube.com] [post] [downloader] [official api]

/*
  base   : www.youtube.com
  fungsi : buat dapetin value youtube post
  node   : v24.20
  by     : wolep
  note   : biasa, single async function, 1 param url post yt
           return object, skrep support single post (text/image)
           multiple image post, vote (text/image), youtube post
           sebenarnya ada banyak ukuran image, cuma gw pick
           yang ukuran paling besar. biar simple. gw suka yang
           besar besar 😏. udh gw rapiin valuenya jadi lu dapet
           json yang konsistent, kalaupun gak ada value nya udh
           gw kasih null
           sorry kalau ada kesalahan skrep :v... enjoyy
  update : 23 Juli 2025, 02:22 WITA
*/
const ytpost = async (ytpostUrl) => {
    if (!ytpostUrl) throw Error(`mana url youtube post nya >:o`)

    const response = await fetch(ytpostUrl)
    if (!response.ok) throw Error(`${response.status} ${response.statusText}\n${await response.text() || null}`)

    const html = await response.text()

    const match = html.match(/ytInitialData = (.+?);</)?.[1]
    if (!match) throw Error(`tidak menemukan match pada youtube post pastiin link post youtube nya benar.`)

    const json = JSON.parse(match) // bisa langsung return json variabel nya
    //return json

    // atau pakai serialize ku uwu
    let postType = null
    let images = null
    let videoShareUrl = null

    const bpr = json?.contents?.twoColumnBrowseResultsRenderer?.tabs?.[0]?.tabRenderer?.content?.sectionListRenderer?.contents?.[0]?.itemSectionRenderer?.contents?.[0]?.backstagePostThreadRenderer?.post?.backstagePostRenderer
    if (!bpr) throw Error (`hmm.. link youtube sih tapi keknya bukan post yang valid atau ada kesalahan`)
    const votePost = bpr?.backstageAttachment?.pollRenderer?.choices
    const multipleImagePost = bpr?.backstageAttachment?.postMultiImageRenderer?.images
    const singleImagePost = bpr?.backstageAttachment?.backstageImageRenderer?.image?.thumbnails
    const videoSharePost = bpr?.backstageAttachment?.videoRenderer?.videoId


    if (votePost) {
        let isVoteImage = false
        images = votePost.map(v => {
            const text = v.text.runs[0].text
            let url = v.image?.thumbnails || null
            if (url) {
                url = url.map(wolep => wolep.url).pop()
                isVoteImage = true
            }
            return { text, url }
        })
        isVoteImage ? postType = "voteImage" : postType = "voteText"
    } else if (multipleImagePost) {
        postType = "multipleImages"
        const imagesArray = multipleImagePost.map(v => v.backstageImageRenderer.image.thumbnails)
        images = imagesArray.map(v => {
            const url = v.map(wolep => wolep.url).pop()
            return { url, text: null }
        })
    } else if (singleImagePost) {
        postType = "singleImage"
        images = []
        images.push({
            url: singleImagePost.map(v => {
                return v.url
            }).pop(),
            text: null
        })
    } else if (videoSharePost) {
        postType = "videoShare"
        videoShareUrl = new URL(response.url).origin + videoSharePost
    } else {
        postType = "text"
    }

    let tags = json?.microformat?.microformatDataRenderer?.tags || null
    if (tags){
        tags = tags.join(", ")
    }
    let result = {
        author: bpr.authorText.runs[0].text,
        authorUrl: new URL(response.url).origin + bpr.authorEndpoint.commandMetadata.webCommandMetadata.url,
        publishTime: bpr.publishedTimeText.runs[0].text,
        publishDate: json.microformat.microformatDataRenderer.publishDate,
        tags,
        text: bpr.contentText.runs.map(v => v.text).join(""),
        like: bpr?.voteCount?.accessibility?.accessibilityData?.label || null,
        images,
        videoShareUrl,
        postUrl: json.microformat.microformatDataRenderer.urlCanonical,
        postType
    }

    return result // tada :v

}

// cara pakai
const url = "http://youtube.com/post/UgkxChSWx6pfUUCxxHeR3LsodyV6Aqwf4GOS?si=Ywu5j0qw08A50lue"
ytpost(url)
    .then(data => console.log(JSON.stringify(data, null, 2)))
    .catch(console.log)

/* hasil
{
  "author": "the wolf",
  "authorUrl": "https://www.youtube.com/@thewolf-ps1qz",
  "publishTime": "10 jam yang lalu",
  "publishDate": "2025-06-22T00:48:53.632504-07:00",
  "tags": null,
  "text": "voting teks",
  "like": "1 suka",
  "images": [
    {
      "text": "wolpi",
      "url": "https://yt3.ggpht.com/F1TWx1qxb6MG2ybiB5z47-kgqrX59UYrScNFCoyc2I0bA5834kY66b5QrvjvFbxkRdT5U3kMHpzxjg=s1280-c-fcrop64=1,00000000ffffffff-nd-v1"
    },
    {
      "text": "wolep",
      "url": "https://yt3.ggpht.com/oVXiAkcgXxd9frkywNTWnruEHEjp-6Inznq1xzw8jlVaAXhxzXqSXjznDyYmNemdqMttwFe8iI7aeg=s1280-c-fcrop64=1,00000000ffffffff-nd-v1"
    },
    {
      "text": "okta",
      "url": "https://yt3.ggpht.com/BsQf5qn1StnkLLzv1KWw_IwV4X5RRYQYNj-D-lfP51_39leUWqeBWQS0gMDipV8jFFkOowRSdE47=s1280-c-fcrop64=1,00000000ffffffff-nd-v1"
    }
  ],
  "videoShareUrl": null,
  "postUrl": "https://www.youtube.com/post/UgkxChSWx6pfUUCxxHeR3LsodyV6Aqwf4GOS",
  "postType": "voteImage"
}
*/