import eventlet
eventlet.monkey_patch()

import os
import sys
import json
import threading
import time
from datetime import datetime
from functools import wraps
from pathlib import Path
import subprocess
import requests

from flask import Flask, render_template, request, jsonify, redirect, url_for, session, send_file, Response
from flask_socketio import SocketIO, emit
from werkzeug.security import check_password_hash, generate_password_hash

from config import config 
from server_manager import init_server_manager, get_server_manager

# --- IMPORTING DEDICATED MANAGER FILES ---
from console_handler import ConsoleHandler
from player_tracker import PlayerTracker
from mod_manager import ModManager
from file_manager import FileManager
from health_ping import health_pinger
# -----------------------------------------


# Initialize Flask app
app = Flask(__name__)
app.secret_key = config.SECRET_KEY
app.config['MAX_CONTENT_LENGTH'] = 500 * 1024 * 1024

# Initialize SocketIO
socketio = SocketIO(app, cors_allowed_origins="*") 

# Initialize managers
server_manager = init_server_manager(socketio)
console_handler = ConsoleHandler(server_manager)
player_tracker = PlayerTracker(server_manager)
mod_manager = ModManager()
file_manager = FileManager()

# Admin password hash
ADMIN_PASSWORD_HASH = generate_password_hash(config.ADMIN_PASSWORD)

# --- GLOBAL PLAYIT VARIABLES ---
PLAYIT_PROCESS = None
PLAYIT_ERROR_LOG = Path(os.getenv('MINECRAFT_SERVER_DIR', '/app/minecraft_server')) / "playit_error.log"

# --- Authentication Decorator ---
def login_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if 'logged_in' not in session or not session['logged_in']:
            if request.is_json:
                return jsonify({'success': False, 'message': 'Authentication required'}), 401
            return redirect(url_for('login'))
        return f(*args, **kwargs)
    return decorated_function

# ====================================================================
# === PLAYIT.GG AGENT FUNCTIONS (Debugging with File Redirection) ===
# ====================================================================

def run_playit_claim_mode():
    """
    Executes 'playit claim' and extracts the claim code.
    """
    try:
        # Use the simplest command which works with the official static binary.
        result = subprocess.run(
            ['playit', 'claim'],
            capture_output=True,
            text=True,
            timeout=10 
        )

        if result.returncode == 0:
            claim_output = result.stdout.strip()
            claim_code = 'CODE NOT FOUND'
            for line in claim_output.splitlines():
                if 'playit.gg/claim/' in line:
                    claim_code = line.split('/')[-1].strip()
                    break
            
            if claim_code == 'CODE NOT FOUND' and claim_output:
                 claim_code = claim_output.split()[-1]
            
            if claim_code == 'CODE NOT FOUND':
                 raise ValueError("Could not find a valid claim code in playit output.")

            server_manager.log(f"PlayIt Claim code generated: {claim_code}", "success")
            start_tunneling(claim_code=claim_code)
        else:
            error_details = result.stderr.strip() or "No detailed error output."
            print("=" * 50)
            print(f"PlayIt Claim FAILED. Details:")
            print(error_details)
            print("=" * 50)
            server_manager.log(f"PlayIt claim failed: {error_details}", "error")
            start_tunneling(error_message="PlayIt 'claim' failed (See logs for details).")

    except Exception as e:
        server_manager.log(f"Error during PlayIt claim: {e}", "error")
        start_tunneling(error_message=f"PlayIt claim encountered an unexpected error: {type(e).__name__}.")

def check_playit_initial_status():
    """Checks if the agent dies within the first 5 seconds after launch."""
    time.sleep(5)
    
    # Check if the process handle exists and if it has terminated
    if PLAYIT_PROCESS and PLAYIT_PROCESS.poll() is not None:
        # Agent has crashed
        server_manager.log(f"PlayIt Agent process crashed. Exit Code: {PLAYIT_PROCESS.poll()}", "error")
        start_tunneling(error_message=f"PlayIt Agent died. Check {PLAYIT_ERROR_LOG.name} in File Manager.")
    else:
        # Agent seems to be running
        server_manager.log("PlayIt Agent appears to be stable. Connection info will be in the log file.", "info")
        # Notify the user to check the log file
        start_tunneling(secret_mode=True)


def run_playit_secret_mode():
    """
    Launches the 'playit run' agent, redirecting all output to a log file 
    for debugging purposes. This replaces the problematic monitoring thread.
    """
    global PLAYIT_PROCESS
    
    try:
        # 1. Open the log file for writing (will create or truncate it)
        with open(PLAYIT_ERROR_LOG, 'w') as log_file:
            
            # 2. Launch the agent, redirecting STDOUT and STDERR to the log file
            # This captures both success and crash messages.
            PLAYIT_PROCESS = subprocess.Popen(
                ['playit', 'run', '--api-address', '127.0.0.1:9000'],
                stdout=log_file,
                stderr=log_file,
                bufsize=1 # Line buffering
            )
            server_manager.log(f"PlayIt.gg agent launched. Output redirected to: {PLAYIT_ERROR_LOG}", "info")
            
            # 3. Start a monitor thread to check for immediate crashes
            threading.Thread(target=check_playit_initial_status, daemon=True).start()
            
    except Exception as e:
        server_manager.log(f"Error launching PlayIt.gg agent: {e}", "error")
        start_tunneling(error_message="PlayIt 'run' failed (Check logs for details).")


def start_playit_agent():
    """
    Determines which PlayIt.gg mode to run based on the environment variable.
    """
    # Delete the old log file on start for a clean run
    if PLAYIT_ERROR_LOG.exists():
        PLAYIT_ERROR_LOG.unlink()
        
    if os.environ.get('PLAYIT_SECRET_KEY'):
        print("=" * 50)
        print("🚀 STARTING PLAYIT.GG AGENT (Secret Key Mode) 🚀")
        print("==================================================")
        run_playit_secret_mode()
    else:
        print("=" * 50)
        print("🔑 STARTING PLAYIT.GG AGENT (Claim Code Mode) 🔑")
        print("Action Required: Go to playit.gg/claim and enter the code below.")
        print("==================================================")
        run_playit_claim_mode()
        
def start_tunneling(claim_code=None, secret_mode=False, error_message=None):
    """
    Displays the connection information based on the current PlayIt mode.
    """
    connect_address = f"{config.SPACE_URL}:{config.SERVER_PORT}"
    
    print("=" * 50)
    print("🌐 MINECRAFT CONNECTION INFO 🌐")
    print(f"Web Panel Address: {connect_address}")
    print("------------------------------------------")
    
    if error_message:
        print(f"MC Tunnel: **ERROR: {error_message}**")
        socketio.emit('server_connect_info', {'address': error_message, 'type': 'error'})
    elif claim_code:
        print(f"MC Tunnel: CLAIM CODE")
        print(f"Claim Code: **{claim_code}** (Use at playit.gg/claim)")
        socketio.emit('server_connect_info', {'address': f'CLAIM: {claim_code}', 'type': 'claim'})
    elif secret_mode:
        # This is the WAITING path for Secret Key mode, pointing the user to the log file.
        print(f"MC Tunnel: **CHECK FILE MANAGER**")
        print(f"Agent running. Check {PLAYIT_ERROR_LOG.name} in the minecraft_server directory for the public address or crash reason.")
        socketio.emit('server_connect_info', {'address': f'Agent Running (Check {PLAYIT_ERROR_LOG.name})', 'type': 'playit'})

    print("------------------------------------------")
    print("=" * 50)
    
    server_manager.log(f"Connect Address: {connect_address}", "info")

# ====================================================================
# === END PLAYIT.GG AGENT FUNCTIONS ===
# ====================================================================


# --- Automated Save/Cleanup Thread ---
def start_auto_save_cleanup_thread():
    CLEANUP_INTERVAL = 6 * 60 * 60 # Save and cleanup every 6 hours
    while True:
        time.sleep(CLEANUP_INTERVAL)
        print("Starting scheduled Supabase config save and local cleanup...")
        server_manager.save_and_cleanup()

# --- Authentication Routes ---

@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        username = request.form.get('username', '')
        password = request.form.get('password', '')
        
        if username == config.ADMIN_USERNAME and check_password_hash(ADMIN_PASSWORD_HASH, password):
            session['logged_in'] = True
            session['username'] = username
            return redirect(url_for('index'))
        
        return render_template('login.html', error='Invalid credentials')
    
    return render_template('login.html')

@app.route('/logout')
def logout():
    session.clear()
    return redirect(url_for('login'))

# --- Main Routes ---

@app.route('/')
@login_required
def index():
    return render_template('index.html', 
                             status=server_manager.get_status(),
                             mods_count=len(mod_manager.get_installed_mods()))

@app.route('/console')
@login_required
def console():
    return render_template('console.html',
                             history=server_manager.get_console_history(200))

@app.route('/players')
@login_required
def players():
    return render_template('players.html',
                             online=server_manager.players_online,
                             all_players=player_tracker.get_all_players(),
                             whitelist=player_tracker.get_whitelist(),
                             ops=player_tracker.get_ops(),
                             banned=player_tracker.get_banned())

@app.route('/mods')
@login_required
def mods():
    return render_template('mods.html',
                             mods=mod_manager.get_installed_mods(),
                             total_size=mod_manager.get_total_size())

@app.route('/files')
@app.route('/files/<path:filepath>')
@login_required
def files(filepath=''):
    dir_content = file_manager.list_directory(filepath)
    return render_template('files.html',
                             content=dir_content,
                             current_path=filepath)

@app.route('/import')
@login_required
def import_page():
    return render_template('import.html',
                             backups=file_manager.list_backups())

@app.route('/settings')
@login_required
def settings():
    props = file_manager.get_server_properties()
    return render_template('settings.html',
                             properties=props,
                             pinger_status=health_pinger.get_status())

# --- API Routes ---

@app.route('/api/health')
def health():
    return jsonify({
        'status': 'ok',
        'timestamp': datetime.now().isoformat(),
        'server_running': server_manager.running
    })

@app.route('/api/status')
@login_required
def api_status():
    return jsonify(server_manager.get_status())

@app.route('/api/server/start', methods=['POST'])
@login_required
def api_start():
    result = server_manager.start()
    return jsonify(result)

@app.route('/api/server/stop', methods=['POST'])
@login_required
def api_stop():
    force = request.json.get('force', False) if request.is_json else False
    result = server_manager.stop(force=force)
    return jsonify(result)

@app.route('/api/server/restart', methods=['POST'])
@login_required
def api_restart():
    result = server_manager.restart()
    return jsonify(result)

@app.route('/api/server/save_cleanup', methods=['POST'])
@login_required
def api_save_cleanup():
    threading.Thread(target=server_manager.save_and_cleanup, daemon=True).start()
    return jsonify({"success": True, "message": "Save and cleanup process started in background."})


@app.route('/api/console/send', methods=['POST'])
@login_required
def api_send_command():
    data = request.get_json()
    command = data.get('command', '')
    if not command:
        return jsonify({'success': False, 'message': 'No command provided'})
    result = console_handler.execute(command)
    return jsonify(result)

@app.route('/api/console/history')
@login_required
def api_console_history():
    limit = request.args.get('limit', 100, type=int)
    return jsonify(server_manager.get_console_history(limit))

# Player API routes
@app.route('/api/players/online')
@login_required
def api_online_players():
    return jsonify(server_manager.players_online)

@app.route('/api/players/all')
@login_required
def api_all_players():
    return jsonify(player_tracker.get_all_players())

@app.route('/api/players/kick', methods=['POST'])
@login_required
def api_kick_player():
    data = request.get_json()
    result = player_tracker.kick_player(data.get('player'), data.get('reason', ''))
    return jsonify(result)

@app.route('/api/players/ban', methods=['POST'])
@login_required
def api_ban_player():
    data = request.get_json()
    result = player_tracker.ban_player(data.get('player'), data.get('reason', ''))
    return jsonify(result)

@app.route('/api/players/pardon', methods=['POST'])
@login_required
def api_pardon_player():
    data = request.get_json()
    result = player_tracker.pardon_player(data.get('player'))
    return jsonify(result)

@app.route('/api/players/op', methods=['POST'])
@login_required
def api_op_player():
    data = request.get_json()
    result = player_tracker.op_player(data.get('player'))
    return jsonify(result)

@app.route('/api/players/deop', methods=['POST'])
@login_required
def api_deop_player():
    data = request.get_json()
    result = player_tracker.deop_player(data.get('player'))
    return jsonify(result)

# Mod API routes
@app.route('/api/mods')
@login_required
def api_list_mods():
    return jsonify(mod_manager.get_installed_mods())

@app.route('/api/mods/upload', methods=['POST'])
@login_required
def api_upload_mod():
    if 'file' not in request.files:
        return jsonify({'success': False, 'message': 'No file provided'})
    result = mod_manager.upload_mod(request.files['file'])
    return jsonify(result)

@app.route('/api/mods/delete', methods=['POST'])
@login_required
def api_delete_mod():
    data = request.get_json()
    result = mod_manager.delete_mod(data.get('filename'))
    return jsonify(result)

@app.route('/api/mods/toggle', methods=['POST'])
@login_required
def api_toggle_mod():
    data = request.get_json()
    result = mod_manager.toggle_mod(data.get('filename'))
    return jsonify(result)

# File API routes
@app.route('/api/files/list')
@login_required
def api_list_files():
    path = request.args.get('path', '')
    return jsonify(file_manager.list_directory(path))

@app.route('/api/files/read')
@login_required
def api_read_file():
    path = request.args.get('path', '')
    return jsonify(file_manager.read_file(path))

@app.route('/api/files/write', methods=['POST'])
@login_required
def api_write_file():
    data = request.get_json()
    result = file_manager.write_file(data.get('path'), data.get('content'))
    return jsonify(result)

@app.route('/api/files/create', methods=['POST'])
@login_required
def api_create_file():
    data = request.get_json()
    result = file_manager.create_file(data.get('path', ''), data.get('name'))
    return jsonify(result)

@app.route('/api/files/mkdir', methods=['POST'])
@login_required
def api_create_dir():
    data = request.get_json()
    result = file_manager.create_directory(data.get('path', ''), data.get('name'))
    return jsonify(result)

@app.route('/api/files/delete', methods=['POST'])
@login_required
def api_delete_file():
    data = request.get_json()
    result = file_manager.delete_item(data.get('path'))
    return jsonify(result)

@app.route('/api/files/rename', methods=['POST'])
@login_required
def api_rename_file():
    data = request.get_json()
    result = file_manager.rename_item(data.get('path'), data.get('new_name'))
    return jsonify(result)

# Backup API routes
@app.route('/api/backup/create', methods=['POST'])
@login_required
def api_create_backup():
    data = request.get_json() or {}
    result = file_manager.create_backup(data.get('name'))
    return jsonify(result)

@app.route('/api/backup/list')
@login_required
def api_list_backups():
    return jsonify(file_manager.list_backups())

@app.route('/api/backup/restore', methods=['POST'])
@login_required
def api_restore_backup():
    data = request.get_json()
    result = file_manager.restore_backup(data.get('name'))
    return jsonify(result)

@app.route('/api/backup/delete', methods=['POST'])
@login_required
def api_delete_backup():
    data = request.get_json()
    result = file_manager.delete_backup(data.get('name'))
    return jsonify(result)

@app.route('/api/backup/download/<name>')
@login_required
def api_download_backup(name):
    path = file_manager.download_backup(name)
    if path:
        return send_file(path, as_attachment=True)
    return jsonify({'success': False, 'message': 'Backup not found'}), 404

# Import API routes
@app.route('/api/import/world', methods=['POST'])
@login_required
def api_import_world():
    if 'file' not in request.files:
        return jsonify({'success': False, 'message': 'No file provided'})
    result = file_manager.import_world(request.files['file'])
    return jsonify(result)

# Settings API routes
@app.route('/api/settings/properties', methods=['GET'])
@login_required
def api_get_properties():
    return jsonify(file_manager.get_server_properties())

@app.route('/api/settings/properties', methods=['POST'])
@login_required
def api_update_properties():
    data = request.get_json()
    result = file_manager.update_server_properties(data)
    return jsonify(result)

@app.route('/api/pinger/status')
@login_required
def api_pinger_status():
    return jsonify(health_pinger.get_status())

# --- SocketIO Events ---

@socketio.on('connect')
def handle_connect():
    if session.get('logged_in'):
        emit('status_update', server_manager.get_status())
        emit('initial_console', server_manager.get_console_history(100))

@socketio.on('send_command')
def handle_command(data):
    if session.get('logged_in'):
        command = data.get('command', '')
        server_manager.send_command(command)

@socketio.on('request_status')
def handle_status_request():
    if session.get('logged_in'):
        emit('status_update', server_manager.get_status())

# ============== Main Entry Point ==============

def main():
    # Start health pinger
    health_pinger.start()
    
    # Ensure required directories exist
    config.MODS_DIR.mkdir(parents=True, exist_ok=True)
    config.WORLD_DIR.mkdir(parents=True, exist_ok=True)
    config.LOGS_DIR.mkdir(parents=True, exist_ok=True)
    config.BACKUPS_DIR.mkdir(parents=True, exist_ok=True)
    config.UPLOADS_DIR.mkdir(parents=True, exist_ok=True)
    
    print("=" * 50)
    print("Minecraft Server Panel Starting")
    print(f"Web Panel: http://0.0.0.0:{config.WEB_PORT}")
    print(f"MC Server: Port {config.SERVER_PORT}")
    print("=" * 50)

    # 1. Start the PlayIt.gg agent
    threading.Thread(target=start_playit_agent, daemon=True).start()
    
    # 2. Start the Auto-Save and Cleanup Thread
    threading.Thread(target=start_auto_save_cleanup_thread, daemon=True).start()
    
    # 3. Run Flask app with SocketIO (CRITICAL HF PORT: 7860)
    socketio.run(
        app,
        host='0.0.0.0',
        port=config.WEB_PORT,
        debug=False,
        use_reloader=False
    )

if __name__ == '__main__':
    main()