index.js

const instaTouch = require('instatouch');

const escapeEmoji = (text) => {
  return text.replace(/[^\p{L}\p{N}\p{P}\p{Z}]/gu, '');
}

exports.handler = async (event) => {
  const notFoundResponse = {
    statusCode: 404,
    body: JSON.stringify('Not found.'),
  };
  try {
    const url = event.queryStringParameters.url;
    const parsedUrl = new URL(url);
    const urlWithoutQueryString = parsedUrl.origin + parsedUrl.pathname;
    const normalizedUrl = urlWithoutQueryString.replace("/tv/", "/p/");

    if (!normalizedUrl) {
      return {
        statusCode: 400,
        body: JSON.stringify('Bad request.'),
      };
    }

    const options = { session: process.env.SESSION_ID }
    const postMeta = await instaTouch.getPostMeta(normalizedUrl, options)
    if (!postMeta.items) {
      return notFoundResponse;
    }
    const postDetails = postMeta.items[0];

    const data = {};

    if (postDetails.caption) {
      data.title = escapeEmoji(postDetails.caption.text);
      data.publishDate = (new Date(postDetails.caption.created_at * 1000)).toISOString();
      data.channel = postDetails.caption.user.username
    }

    if (postDetails.user) {
      data.channel = postDetails.user.username
    }

    if (postDetails.taken_at) {
      data.publishDate = (new Date(postDetails.taken_at * 1000)).toISOString();
    }

    if (postDetails.carousel_media) {
      data.thumbnailSrc = postDetails.carousel_media[0].image_versions2?.candidates[0]?.url
    }

    if (postDetails.image_versions2) {
      data.thumbnailSrc = postDetails.image_versions2?.candidates[0]?.url
    }

    data.duration = postDetails.video_duration;
    data.views = postDetails.play_count || postDetails.view_count;
    data.postId = postDetails.pk;
    data.likes = postDetails.like_count;
    data.comments = postDetails.comment_count;
    data.postType = postDetails.product_type
    return {
      statusCode: 200,
      body: JSON.stringify(data),
    };
  } catch (error) {
    console.log(error);
    return {
      statusCode: 404,
      body: JSON.stringify(error),
    };
  }
};