import CacheUtils from "./CacheUtils.js"

const OPEN_COLLECTIVE_ENDPOINT= ()=>"https://api.opencollective.com/graphql/v2";
const OPEN_COLLECTIVE_BACKER_QUERY = (org) => `
query collective ($offset: Int, $limit: Int){
  collective(slug: "${org}") {
    name
    backers: members(role: BACKER, offset: $offset, limit: $limit) {
      limit
      totalCount
      nodes {
        publicMessage
        totalDonations {
          value
          currency
          valueInCents
        }
        account {
          slug
          type
          name
          imageUrl
          website
          twitterHandle
          ... on Individual {
            email
          }
          ... on Organization {
            admins: members(role: ADMIN) {
              nodes {
                account {
                  ... on Individual {
                    email
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

  `;
export default class OpenCollectiveUtils {
  static async    getBackers(collective) {
      const cacheKey = "ocollective/" + collective + "/backers";
      let backers = CacheUtils.get(cacheKey);
      let cached=true;
      if (!backers) {
        cached=false;
        const endPoint = OPEN_COLLECTIVE_ENDPOINT(collective);
        const query = OPEN_COLLECTIVE_BACKER_QUERY(collective);
        backers = await fetch(endPoint, {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
            'Accept': 'application/json',
          },
          body: JSON.stringify({
            query: query,
            variables: {
              offset: 0,
              limit: 1000
            },
          })
        }).then((res) =>{ 
          if(res.ok&&res.status==200)return res.json() ;
          else throw "Failed to fetch!";
      });
        if (!backers) throw "Undefined backers?";
        CacheUtils.set(cacheKey, backers);
      }
      return [backers,cached];
 
  }

   static async getBackersFlat(collective,modifier) {
     const [res,cached]=await this.getBackers(collective);
    const backers = [];
    const backersObj = res.data.collective.backers.nodes;
    for (let i in backersObj) {
      const entry = {};
      const backer = backersObj[i];

      entry.message = backer.publicMessage;
      entry.value = backer.totalDonations.value;
      entry.currency = backer.totalDonations.currency;

      let account = backer.account;
      entry.accountUrl = "https://opencollective.com/" + account.slug;

      // const subAccounts = [];
      // if (account.type == "ORGANIZATION") {
      //   account.admins.nodes.forEach(admin => subAccounts.push(admin.account));
      // } else {
      //   subAccounts.push(account);
      // }

      // subAccounts.forEach(account => {
        // const subEntry = { ...entry };
        // subEntry.name = account.name;
        // subEntry.website = account.website;
        // subEntry.avatar = account.imageUrl;
        // backers.push(subEntry);
      // });
        entry.name = account.name;
        entry.website = account.website;
        entry.avatar = account.imageUrl;
        entry.twitter = account.twitterHandle;
        entry.slug = account.slug;
        entry.type=account.type;
        backers.push(entry);
    }

    if(!cached&&modifier)backers=modifier(backers);

    return backers;
  }
}