import passport from "passport";
import SteamStrategy from "passport-steam";
import { config } from "./index.js";
import User from "../models/User.js";

// Configure HTTP agent with timeout for Steam OpenID
import https from "https";
import http from "http";

const httpAgent = new http.Agent({
  timeout: 10000, // 10 second timeout
  keepAlive: true,
});

const httpsAgent = new https.Agent({
  timeout: 10000, // 10 second timeout
  keepAlive: true,
});

/**
 * Configure Passport with Steam Strategy
 */
export const configurePassport = () => {
  // Serialize user to session
  passport.serializeUser((user, done) => {
    done(null, user._id.toString());
  });

  // Deserialize user from session
  passport.deserializeUser(async (id, done) => {
    try {
      const user = await User.findById(id);
      done(null, user);
    } catch (error) {
      done(error, null);
    }
  });

  console.log("🔧 Configuring Steam Strategy...");
  console.log("Steam Realm:", config.steam.realm);
  console.log("Steam Return URL:", config.steam.returnURL);
  console.log(
    "Steam API Key:",
    config.steam.apiKey
      ? "Set (length: " + config.steam.apiKey.length + ")"
      : "Not Set"
  );

  // Configure Steam Strategy with options
  try {
    passport.use(
      new SteamStrategy(
        {
          returnURL: config.steam.returnURL,
          realm: config.steam.realm,
          apiKey: config.steam.apiKey,
          // Add HTTP agents for timeout control
          agent: httpAgent,
          profile: true,
        },
        async (identifier, profile, done) => {
          try {
            const steamId = profile.id;

            // Find or create user
            let user = await User.findOne({ steamId });

            if (user) {
              // Update existing user profile
              user.username = profile.displayName;
              user.avatar =
                profile.photos?.[2]?.value ||
                profile.photos?.[0]?.value ||
                null;
              user.communityvisibilitystate =
                profile._json?.communityvisibilitystate || 1;

              await user.save();

              console.log(
                `✅ Existing user logged in: ${user.username} (${steamId})`
              );
            } else {
              // Create new user
              user = new User({
                username: profile.displayName,
                steamId: steamId,
                avatar:
                  profile.photos?.[2]?.value ||
                  profile.photos?.[0]?.value ||
                  null,
                account_creation:
                  profile._json?.timecreated || Math.floor(Date.now() / 1000),
                communityvisibilitystate:
                  profile._json?.communityvisibilitystate || 1,
                balance: 0,
                staffLevel: 0,
              });

              await user.save();

              console.log(
                `✅ New user registered: ${user.username} (${steamId})`
              );
            }

            return done(null, user);
          } catch (error) {
            console.error("❌ Steam authentication error:", error);
            return done(error, null);
          }
        }
      )
    );
    console.log("✅ Steam Strategy registered successfully");
  } catch (error) {
    console.error("❌ Failed to configure Steam Strategy:", error.message);
    console.error("This may be due to network issues or invalid configuration");
  }

  console.log("🔐 Passport configured with Steam strategy");
  console.log(`📍 Steam Realm: ${config.steam.realm}`);
  console.log(`🔙 Return URL: ${config.steam.returnURL}`);
  console.log(`🔑 API Key: ${config.steam.apiKey ? "✅ Set" : "❌ Not Set"}`);

  // Important note about Steam OpenID
  console.log("\n💡 Note: Steam OpenID discovery can sometimes fail due to:");
  console.log("   - Network/firewall blocking Steam's OpenID endpoint");
  console.log("   - Steam's service being temporarily unavailable");
  console.log("   - DNS resolution issues");
  console.log(
    "   If /auth/steam fails, try: curl -v https://steamcommunity.com/openid"
  );
};

export default configurePassport;