opensea-scraper/src/functions/basicInfo.js

Scraping floor prices from opensea.

const axios = require("axios");
/**
 * gets basic info of a collection from the API
 * => api.opensea.io/collection/{slug}
 * no puppeteer is involved here
 */
const basicInfo = async (slug) => {
  const response = await axios.get(`https://api.opensea.io/collection/${slug}`);
  const collectionObj = response.data.collection;
  const stats = _getStats(collectionObj);
  return {
    slug: slug,
    name: _getName(collectionObj),
    symbol: _getSymbol(collectionObj),
    stats: _getStats(collectionObj),
    floorPrice: stats ? stats.floorPrice : null,
    description: _getDescription(collectionObj),
    contractAddress: _getContractAddress(collectionObj),
    safelistRequestStatus: _getSafelistRequestStatus(collectionObj),
    isVerified: _isVerified(collectionObj),
    bannerImageUrl: _getBannerImageUrl(collectionObj),
    imageUrl: _getImageUrl(collectionObj),
    social: {
      discord: _getDiscord(collectionObj),
      medium: _getMedium(collectionObj),
      twitter: _getTwitter(collectionObj),
      website: _getWebsite(collectionObj),
      telegram: _getTelegram(collectionObj),
      instagram: _getInstagram(collectionObj),
      wiki: _getWiki(collectionObj),
    },
    createdAt: new Date(),
  };
};

function _getStats(collectionObj) {
  try {
    return _camelCase(collectionObj.stats);
  } catch (err) {
    return null;
  }
}
function _getName(collectionObj) {
  try {
    return collectionObj.name;
  } catch (err) {
    return null;
  }
}
function _getContractAddress(collectionObj) {
  try {
    return collectionObj.primary_asset_contracts[0].address;
  } catch (err) {
    return null;
  }
}
function _getBannerImageUrl(collectionObj) {
  try {
    return collectionObj.banner_image_url;
  } catch (err) {
    return null;
  }
}
function _getImageUrl(collectionObj) {
  try {
    return collectionObj.image_url;
  } catch (err) {
    return null;
  }
}
function _getDiscord(collectionObj) {
  try {
    return collectionObj.discord_url;
  } catch (err) {
    return null;
  }
}
function _getMedium(collectionObj) {
  try {
    return collectionObj.medium_username;
  } catch (err) {
    return null;
  }
}
function _getTwitter(collectionObj) {
  try {
    return collectionObj.twitter_username;
  } catch (err) {
    return null;
  }
}
function _getWebsite(collectionObj) {
  try {
    return collectionObj.external_url;
  } catch (err) {
    return null;
  }
}
function _getTelegram(collectionObj) {
  try {
    return collectionObj.telegram_url;
  } catch (err) {
    return null;
  }
}
function _getInstagram(collectionObj) {
  try {
    return collectionObj.instagram_username;
  } catch (err) {
    return null;
  }
}
function _getWiki(collectionObj) {
  try {
    return collectionObj.wiki_url;
  } catch (err) {
    return null;
  }
}
function _getDescription(collectionObj) {
  try {
    return collectionObj.description;
  } catch (err) {
    return null;
  }
}
function _getSymbol(collectionObj) {
  try {
    return collectionObj.primary_asset_contracts[0].symbol;
  } catch (err) {
    return null;
  }
}
function _getSafelistRequestStatus(collectionObj) {
  try {
    return collectionObj.safelist_request_status;
  } catch (error) {
    return null;
  }
}
function _isVerified(collectionObj) {
  try {
    const safelistRequestStatus = _getSafelistRequestStatus(collectionObj);
    return safelistRequestStatus === "verified";
  } catch (error) {
    return null;
  }
}

function _camelCase(obj) {
  let newObj = {};
  for (d in obj) {
    if (obj.hasOwnProperty(d)) {
      newObj[
        d.replace(/(\_\w)/g, function (k) {
          return k[1].toUpperCase();
        })
      ] = obj[d];
    }
  }
  return newObj;
}

module.exports = basicInfo;