Instagram check own followers/unfollowers

gistfile1.js

// --- Constants ---
const INSTAGRAM_URL = "https://www.instagram.com";
const IG_APP_ID = "936619743392459";

const fetchOptions = {
  credentials: "include",
  headers: { "X-IG-App-ID": IG_APP_ID },
  method: "GET",
};

// --- Utilities ---
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
const random = (min, max) => Math.floor(Math.random() * (max - min)) + min;

// --- Environment Check ---
if (window.location.origin !== INSTAGRAM_URL) {
  alert("Redirecting to Instagram. Please re-run the script after landing.");
  window.location.href = INSTAGRAM_URL;
  console.clear();
}

// --- Core API Functions ---
const fetchFriendships = async (type, userId, count = 50, maxId = "") => {
  const params = new URLSearchParams({ count, ...(maxId && { max_id: maxId }) });
  const url = `${INSTAGRAM_URL}/api/v1/friendships/${userId}/${type}/?${params}`;

  const { users = [], next_max_id } = await (await fetch(url, fetchOptions)).json();

  if (next_max_id) {
    const delay = random(800, 1500);
    console.log(`Loaded ${users.length} ${type}. Sleeping ${delay}ms...`);
    await sleep(delay);
    const moreUsers = await fetchFriendships(type, userId, count, next_max_id);
    return [...users, ...moreUsers];
  }

  return users;
};

const getFollowers = (userId, count = 50) => fetchFriendships("followers", userId, count);
const getFollowing = (userId, count = 50) => fetchFriendships("following", userId, count);

const fetchUserId = async (username) => {
  const url = `${INSTAGRAM_URL}/api/v1/web/search/topsearch/?context=blended&query=${encodeURIComponent(username)}&include_reel=false`;
  const { users = [] } = await (await fetch(url, fetchOptions)).json();

  return users.find(({ user }) => user.username.toLowerCase() === username.toLowerCase())?.user?.pk ?? null;
};

// --- Main Business Logic ---
const getUserFriendshipStats = async (username) => {
  const userId = await fetchUserId(username);
  if (!userId) throw new Error(`User "${username}" not found.`);

  const [followers, following] = await Promise.all([
    getFollowers(userId),
    getFollowing(userId),
  ]);

  const followersSet = new Set(followers.map(({ username }) => username.toLowerCase()));
  const followingSet = new Set(following.map(({ username }) => username.toLowerCase()));

  console.log("-".repeat(40));
  console.log(`Fetched ${followersSet.size} followers and ${followingSet.size} following.`);
  console.log("Note: Output might be partial if Instagram limits the response.");

  const PeopleIDontFollowBack = [...followersSet].filter(user => !followingSet.has(user));
  const PeopleNotFollowingMeBack = [...followingSet].filter(user => !followersSet.has(user));

  return { PeopleIDontFollowBack, PeopleNotFollowingMeBack };
};

// --- Run (replace "example_username" with your Instagram username) ---
const username = "example_username";

getUserFriendshipStats(username)
  .then((stats) => console.log(stats))
  .catch((error) => console.error(error.message));