// Instagram Follower Analyzer - Browser Console Version
// Source - https://stackoverflow.com/a
// Posted by Jean Costa, modified by community. See post 'Timeline' for change history
// Retrieved 2025-11-20, License - CC BY-SA 4.0
// Modified and enhanced with additional features

const username = "USER_NAME_HERE"; // Change this to your Instagram username

/**
 * Initialized like this so we can still run it from browsers, but also use typescript on a code editor for intellisense.
 */
let followers = [{ username: "", full_name: "" }];
let followings = [{ username: "", full_name: "" }];
let dontFollowMeBack = [{ username: "", full_name: "" }];
let iDontFollowBack = [{ username: "", full_name: "" }];

followers = [];
followings = [];
dontFollowMeBack = [];
iDontFollowBack = [];

(async () => {
  try {
    console.log(`%c🚀 Process started! Give it a couple of seconds...`, 'color: #4CAF50; font-size: 14px; font-weight: bold;');

    // Get user ID from username
    const userQueryRes = await fetch(
      `https://www.instagram.com/web/search/topsearch/?query=${username}`
    );

    const userQueryJson = await userQueryRes.json();

    const userId = userQueryJson.users
      .map((u) => u.user)
      .filter((u) => u.username === username)[0].pk;

    console.log(`%c✅ Found user ID: ${userId}`, 'color: #2196F3; font-size: 12px;');

    // Fetch all followers
    let after = null;
    let has_next = true;

    console.log(`%c📥 Fetching followers...`, 'color: #FF9800; font-size: 12px;');

    while (has_next) {
      await fetch(
        `https://www.instagram.com/graphql/query/?query_hash=c76146de99bb02f6415203be841dd25a&variables=` +
          encodeURIComponent(
            JSON.stringify({
              id: userId,
              include_reel: true,
              fetch_mutual: true,
              first: 50,
              after: after,
            })
          )
      )
        .then((res) => res.json())
        .then((res) => {
          has_next = res.data.user.edge_followed_by.page_info.has_next_page;
          after = res.data.user.edge_followed_by.page_info.end_cursor;
          followers = followers.concat(
            res.data.user.edge_followed_by.edges.map(({ node }) => {
              return {
                username: node.username,
                full_name: node.full_name,
              };
            })
          );
        });
      
      // Small delay to avoid rate limiting
      await new Promise(resolve => setTimeout(resolve, 100));
    }

    console.log(`%c✅ Found ${followers.length} followers`, 'color: #4CAF50; font-size: 12px;');
    console.log({ followers });

    // Fetch all following
    after = null;
    has_next = true;

    console.log(`%c📥 Fetching following...`, 'color: #FF9800; font-size: 12px;');

    while (has_next) {
      await fetch(
        `https://www.instagram.com/graphql/query/?query_hash=d04b0a864b4b54837c0d870b0e77e076&variables=` +
          encodeURIComponent(
            JSON.stringify({
              id: userId,
              include_reel: true,
              fetch_mutual: true,
              first: 50,
              after: after,
            })
          )
      )
        .then((res) => res.json())
        .then((res) => {
          has_next = res.data.user.edge_follow.page_info.has_next_page;
          after = res.data.user.edge_follow.page_info.end_cursor;
          followings = followings.concat(
            res.data.user.edge_follow.edges.map(({ node }) => {
              return {
                username: node.username,
                full_name: node.full_name,
              };
            })
          );
        });
      
      // Small delay to avoid rate limiting
      await new Promise(resolve => setTimeout(resolve, 100));
    }

    console.log(`%c✅ Found ${followings.length} following`, 'color: #4CAF50; font-size: 12px;');
    console.log({ followings });

    // Find who doesn't follow you back
    dontFollowMeBack = followings.filter((following) => {
      return !followers.find(
        (follower) => follower.username === following.username
      );
    });

    console.log(`%c❌ ${dontFollowMeBack.length} accounts don't follow you back`, 'color: #F44336; font-size: 12px; font-weight: bold;');
    console.log({ dontFollowMeBack });

    // Find who you don't follow back
    iDontFollowBack = followers.filter((follower) => {
      return !followings.find(
        (following) => following.username === follower.username
      );
    });

    console.log(`%c➕ ${iDontFollowBack.length} accounts you don't follow back`, 'color: #9C27B0; font-size: 12px; font-weight: bold;');
    console.log({ iDontFollowBack });

    // Summary
    const mutualFollowers = followers.length - iDontFollowBack.length;
    console.log(`\n%c═══════════════════════════════════════`, 'color: #607D8B;');
    console.log(`%c📊 ANALYSIS SUMMARY`, 'color: #607D8B; font-size: 16px; font-weight: bold;');
    console.log(`%c═══════════════════════════════════════`, 'color: #607D8B;');
    console.log(`%c👥 Total Followers: ${followers.length}`, 'color: #2196F3; font-size: 12px;');
    console.log(`%c👤 Total Following: ${followings.length}`, 'color: #2196F3; font-size: 12px;');
    console.log(`%c🤝 Mutual Followers: ${mutualFollowers}`, 'color: #4CAF50; font-size: 12px;');
    console.log(`%c❌ Don't Follow Back: ${dontFollowMeBack.length}`, 'color: #F44336; font-size: 12px;');
    console.log(`%c➕ You Don't Follow Back: ${iDontFollowBack.length}`, 'color: #9C27B0; font-size: 12px;');
    console.log(`%c═══════════════════════════════════════\n`, 'color: #607D8B;');

    console.log(
      `%c💡 TIP: Type one of these commands to copy data:\n` +
      `   • copy(followers)\n` +
      `   • copy(followings)\n` +
      `   • copy(dontFollowMeBack)\n` +
      `   • copy(iDontFollowBack)`,
      'color: #00BCD4; font-size: 11px;'
    );

    console.log(
      `%c\n📥 To save as JSON file, type:\n` +
      `   • downloadJSON(dontFollowMeBack, 'not-following-back.json')\n` +
      `   • downloadJSON(iDontFollowBack, 'i-dont-follow-back.json')`,
      'color: #00BCD4; font-size: 11px;'
    );

  } catch (err) {
    console.error(`%c❌ ERROR:`, 'color: #F44336; font-size: 14px; font-weight: bold;', err);
    console.log(
      `%c\n⚠️ Make sure you:\n` +
      `   1. Are logged into Instagram\n` +
      `   2. Changed 'USER_NAME_HERE' to your actual username\n` +
      `   3. Are running this in the Instagram website console`,
      'color: #FF9800; font-size: 11px;'
    );
  }
})();

// Helper function to download data as JSON
function downloadJSON(data, filename) {
  const dataStr = JSON.stringify(data, null, 2);
  const dataBlob = new Blob([dataStr], { type: "application/json" });
  const url = URL.createObjectURL(dataBlob);
  const link = document.createElement("a");
  link.href = url;
  link.download = filename;
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);
  URL.revokeObjectURL(url);
  console.log(`%c✅ Downloaded: ${filename}`, 'color: #4CAF50; font-size: 12px;');
}