#!/usr/bin/env node
/**
 * Discord user lookup WITH ROLES
 * 
 * Fetches:
 * - User info (username, display name, avatar)
 * - Guild member info (roles, join date, server nickname)
 * - All Palpocalypse server roles
 * 
 * Requires: Server Members Intent enabled in Discord Developer Portal
 */

const fs = require('fs');
const path = require('path');
const { Client, GatewayIntentBits } = require('discord.js');

require('dotenv').config({ path: path.join(__dirname, '../../.env') });

const TOKEN = process.env.MEMBER_BOT_TOKEN || process.env.DISCORD_BOT_TOKEN;
const GUILD_ID = '798321161082896395';  // Indifferent Broccoli server

if (!TOKEN) {
    console.error('❌ Error: No bot token found');
    process.exit(1);
}

const args = process.argv.slice(2);
if (args.length < 2) {
    console.error('Usage: node scripts/lookup-with-roles.js <input_file> <output_file>');
    process.exit(1);
}

const inputFile = args[0];
const outputFile = args[1];

const userIds = fs.readFileSync(inputFile, 'utf-8')
    .split('\n')
    .map(line => line.trim())
    .filter(line => line.length > 0);

console.log(`✅ Loaded ${userIds.length} user IDs`);

let results = {};
let processed = 0;
let errors = 0;

if (fs.existsSync(outputFile)) {
    try {
        const existing = JSON.parse(fs.readFileSync(outputFile, 'utf-8'));
        results = existing.users || {};
        processed = Object.keys(results).length;
        errors = existing.errors || 0;
        console.log(`📂 Found existing: ${processed} users`);
    } catch (e) {
        console.log(`⚠️  Starting fresh`);
    }
}

const client = new Client({
    intents: [
        GatewayIntentBits.Guilds,
        GatewayIntentBits.GuildMembers  // Required for roles!
    ]
});

let guild = null;

async function lookupUserWithRoles(userId) {
    if (results[userId]) return results[userId];
    
    try {
        // Fetch basic user info
        const user = await client.users.fetch(userId);
        
        // Try to fetch guild member (for roles)
        let roles = [];
        let serverNickname = null;
        let joinedAt = null;
        let isInServer = false;
        
        try {
            const member = await guild.members.fetch(userId);
            isInServer = true;
            serverNickname = member.nickname;
            joinedAt = member.joinedAt ? member.joinedAt.toISOString() : null;
            
            // Get all roles except @everyone
            roles = member.roles.cache
                .filter(role => role.name !== '@everyone')
                .map(role => ({
                    id: role.id,
                    name: role.name,
                    color: role.hexColor,
                    position: role.position
                }))
                .sort((a, b) => b.position - a.position);  // Highest role first
            
        } catch (memberError) {
            // User exists but not in this server
            isInServer = false;
        }
        
        return {
            success: true,
            id: user.id,
            username: user.username,
            globalName: user.globalName || user.username,
            tag: user.tag,
            bot: user.bot,
            avatar: user.displayAvatarURL(),
            // Server-specific data
            server_nickname: serverNickname,
            joined_at: joinedAt,
            in_server: isInServer,
            roles: roles,
            role_names: roles.map(r => r.name),
            highest_role: roles[0]?.name || null
        };
        
    } catch (error) {
        return {
            success: false,
            id: userId,
            error: error.message,
            username: null,
            globalName: null,
            roles: []
        };
    }
}

function saveResults() {
    const output = {
        timestamp: new Date().toISOString(),
        total_users: userIds.length,
        processed: processed,
        successful: processed - errors,
        errors: errors,
        guild_id: GUILD_ID,
        includes_roles: true,
        users: results
    };
    
    fs.writeFileSync(outputFile, JSON.stringify(output, null, 2));
}

async function processUsers() {
    console.log('\n🎭 Starting lookups WITH ROLES...');
    console.log(`   Guild ID: ${GUILD_ID}`);
    console.log(`   Rate: 1 user/second\n`);
    
    // Fetch guild
    guild = await client.guilds.fetch(GUILD_ID);
    console.log(`✅ Connected to: ${guild.name}\n`);
    
    const startTime = Date.now();
    const toProcess = userIds.filter(id => !results[id]);
    console.log(`   ${toProcess.length} users remaining\n`);
    
    for (let i = 0; i < toProcess.length; i++) {
        const userId = toProcess[i];
        
        const result = await lookupUserWithRoles(userId);
        results[result.id] = result;
        
        if (!result.success) errors++;
        processed++;
        
        // Save every 10 users
        if (processed % 10 === 0) {
            saveResults();
            const elapsed = (Date.now() - startTime) / 1000;
            const rate = (processed - (userIds.length - toProcess.length)) / elapsed;
            const remaining = (toProcess.length - i - 1) / rate;
            
            // Show sample with roles
            if (result.success && result.roles.length > 0) {
                const rolePreview = result.role_names.slice(0, 2).join(', ');
                console.log(`💾 ${processed}/${userIds.length} - ${result.globalName} [${rolePreview}] - ~${remaining.toFixed(0)}s left`);
            } else {
                console.log(`💾 ${processed}/${userIds.length} (${errors} errors) - ~${remaining.toFixed(0)}s left`);
            }
        }
        
        await new Promise(resolve => setTimeout(resolve, 1000));
    }
    
    saveResults();
    
    const totalTime = (Date.now() - startTime) / 1000;
    
    // Stats
    const usersWithRoles = Object.values(results).filter(u => u.success && u.roles.length > 0).length;
    const allRoleNames = new Set();
    Object.values(results).forEach(u => {
        if (u.success) {
            u.role_names?.forEach(r => allRoleNames.add(r));
        }
    });
    
    console.log(`\n${'='.repeat(70)}`);
    console.log(`✅ Complete with Roles!`);
    console.log(`${'='.repeat(70)}`);
    console.log(`   Time: ${totalTime.toFixed(1)}s`);
    console.log(`   Processed: ${processed}/${userIds.length}`);
    console.log(`   Successful: ${processed - errors}`);
    console.log(`   Users with roles: ${usersWithRoles}`);
    console.log(`   Unique roles found: ${allRoleNames.size}`);
    console.log(`\n💾 Saved to: ${outputFile}\n`);
    
    // Show some roles
    if (allRoleNames.size > 0) {
        console.log('📋 Sample roles found:');
        Array.from(allRoleNames).slice(0, 10).forEach(r => console.log(`   • ${r}`));
    }
    
    process.exit(0);
}

client.once('ready', () => {
    console.log(`✅ Logged in as ${client.user.tag}\n`);
    processUsers();
});

client.on('error', (error) => {
    console.error('❌ Error:', error.message);
});

process.on('SIGINT', () => {
    console.log('\n\n⚠️  Interrupted! Saving...');
    saveResults();
    console.log('✅ Saved. Resume by running same command.\n');
    process.exit(0);
});

console.log('🔌 Connecting to Discord...');
client.login(TOKEN);