joinlemmy-site/update_donations.mjs

import fs from "fs";
import fetch from "node-fetch";

const donationStatsFile = "src/shared/donation_stats.ts";

const USDtoEURUrl =
  "https://cdn.jsdelivr.net/gh/fawazahmed0/currency-api@1/latest/currencies/usd/eur.json";

const liberaPayUrl = "https://liberapay.com/Lemmy/public.json";
const openCollectiveUrl = "https://opencollective.com/lemmy.json";
const patreonUrl = "https://www.patreon.com/api/campaigns/2692831";

const usdToEurRes = await fetch(USDtoEURUrl);
const usdToEur = (await usdToEurRes.json()).eur;

// In weekly USD
const liberaPayRes = await fetch(liberaPayUrl);
const liberaPayData = await liberaPayRes.json();

// In yearly USD, decimal
const openCollectiveRes = await fetch(openCollectiveUrl);
const openCollectiveData = await openCollectiveRes.json();

// In monthly USD, decimal
const patreonRes = await fetch(patreonUrl);
const patreonData = await patreonRes.json();

const donationData = [
  {
    name_: "liberapay",
    patrons: liberaPayData.npatrons,
    amount: Number(liberaPayData.receiving.amount) * 4.348214 * usdToEur,
  },
  {
    name_: "opencollective",
    patrons: openCollectiveData.backersCount,
    amount: (Number(openCollectiveData.yearlyIncome) / 100 / 12) * usdToEur,
  },
  {
    name_: "patreon",
    patrons: patreonData.data.attributes.patron_count,
    amount: (Number(patreonData.data.attributes.pledge_sum) / 100) * usdToEur,
  },
];

let data = `export const donation_stats = \n `;
data += JSON.stringify(donationData, null, 2) + ";";
fs.writeFileSync(donationStatsFile, data);