/*
This file is only ran by GitHub Actions in order to populate the Invidious instances list

This file should not be shipped with the extension
*/

import { writeFile, existsSync } from "fs"
import { join } from "path"
import { InvidiousInstance, instanceMap } from "./invidiousType"

// import file from https://api.invidious.io/instances.json
if (!existsSync(join(__dirname, "data.json"))) {
  process.exit(1);
}
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
import * as data from "../ci/data.json";

// static non-invidious instances
const staticInstances = ["www.youtubekids.com"];

// only https servers
const mapped: instanceMap = data
  .filter((i: InvidiousInstance) => i[1]?.type === "https")
  .map((instance: InvidiousInstance) => {
    return {
      name: instance[0],
      url: instance[1].uri,
      dailyRatios: instance[1].monitor.dailyRatios,
      thirtyDayUptime: instance[1]?.monitor["30dRatio"].ratio,
    }
  });

// reliability and sanity checks
const reliableCheck = mapped
  .filter((instance) => {
    // 30d uptime >= 90%
    const thirtyDayUptime = Number(instance.thirtyDayUptime) >= 90;
    // available for at least 80/90 days
    const dailyRatioCheck = instance.dailyRatios.filter(status => status.label !== "black");
    return thirtyDayUptime && dailyRatioCheck.length >= 80;
  })
  // url includes name
  .filter((instance) => instance.url.includes(instance.name));

// finally map to array
const result: string[] = reliableCheck.map((instance) => instance.name).sort();

writeFile(
  join(__dirname, "./invidiouslist.json"),
  JSON.stringify([...staticInstances, ...result]),
  (err) => {
    if (err) return console.log(err);
  }
);