app.py

from flask import Flask, render_template, request, jsonify
from flask_socketio import SocketIO, emit
import os
import requests
import json
import uuid
from datetime import datetime
from dotenv import load_dotenv
import logging
from werkzeug.utils import secure_filename
import random
import asyncio

# Initialize Flask and configure core settings
app = Flask(__name__)
app.config['SECRET_KEY'] = os.urandom(24)  # Generate a random secret key for security
app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024  # Limit file uploads to 16MB

# Initialize SocketIO with CORS support for development
socketio = SocketIO(app, cors_allowed_origins="*")

# Load environment variables from .env file
load_dotenv()
MISTRAL_API_KEY = os.getenv('MISTRAL_API_KEY')
ELEVENLABS_API_KEY = os.getenv('ELEVENLABS_API_KEY')

# Configure logging to track application behavior
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

class GameState:
    """Manages the state of all active game sessions."""
    
    def __init__(self):
        """Initialize the game state manager."""
        self.games = {}  # Dictionary to store all active games
        self.cleanup_interval = 3600  # Cleanup inactive games every hour
        
    def create_game(self):
        """Create a new game session with a unique identifier."""
        game_id = str(uuid.uuid4())
        self.games[game_id] = {
            'players': [],
            'current_phase': 'setup',
            'recordings': {},
            'impostor': None,
            'votes': {},
            'question': None,
            'impostor_answer': None,
            'modified_recording': None,
            'round_number': 1,
            'start_time': datetime.now().isoformat(),
            'completed_rounds': [],
            'score': {'impostor_wins': 0, 'player_wins': 0}
        }
        return game_id

    def cleanup_inactive_games(self):
        """Remove inactive game sessions older than 2 hours."""
        current_time = datetime.now()
        inactive_threshold = 7200  # 2 hours in seconds
        
        for game_id, game in list(self.games.items()):
            start_time = datetime.fromisoformat(game['start_time'])
            if (current_time - start_time).total_seconds() > inactive_threshold:
                del self.games[game_id]

# Initialize global game state
game_state = GameState()

async def generate_question():
    """Generate an engaging question using Mistral AI."""
    try:
        headers = {
            'Authorization': f'Bearer {MISTRAL_API_KEY}',
            'Content-Type': 'application/json'
        }
        
        # Craft a prompt that encourages interesting, personal questions
        payload = {
            'messages': [{
                'role': 'user',
                'content': '''Generate an engaging personal question for a social game.
                The question should:
                1. Encourage creative and unique responses
                2. Be open-ended but not too philosophical
                3. Be answerable in 15-30 seconds
                4. Be appropriate for all ages
                5. Spark interesting conversation

                Generate only the question, without any additional text.'''
            }]
        }
        
        response = requests.post(
            'https://api.mistral.ai/v1/chat/completions',
            headers=headers,
            json=payload,
            timeout=10  # Set timeout to handle slow responses
        )
        
        if response.status_code == 200:
            question = response.json()['choices'][0]['message']['content'].strip()
            logger.info(f"Generated question: {question}")
            return question
        else:
            logger.error(f"Mistral API error: {response.status_code}")
            # Fallback questions if API fails
            fallback_questions = [
                "What is your favorite childhood memory?",
                "What's the most interesting place you've ever visited?",
                "What's a skill you'd love to master and why?",
                "What's the best piece of advice you've ever received?"
            ]
            return random.choice(fallback_questions)
            
    except Exception as e:
        logger.error(f"Error generating question: {str(e)}")
        return "What is your favorite memory from your childhood?"

async def generate_impostor_answer(question):
    """Generate a convincing impostor response using Mistral AI."""
    try:
        headers = {
            'Authorization': f'Bearer {MISTRAL_API_KEY}',
            'Content-Type': 'application/json'
        }
        
        # Craft a detailed prompt for generating a natural response
        prompt = f'''Given the question "{question}", generate a detailed and convincing personal response.
        The response should:
        1. Sound natural and conversational
        2. Be 2-3 sentences long
        3. Include specific details to sound authentic
        4. Be suitable for text-to-speech conversion
        5. Avoid complex words or punctuation that might affect voice synthesis
        
        Generate only the response, without any additional context.'''
        
        payload = {
            'messages': [{
                'role': 'user',
                'content': prompt
            }]
        }
        
        response = requests.post(
            'https://api.mistral.ai/v1/chat/completions',
            headers=headers,
            json=payload,
            timeout=10
        )
        
        if response.status_code == 200:
            answer = response.json()['choices'][0]['message']['content'].strip()
            logger.info(f"Generated impostor answer: {answer}")
            return answer
        else:
            logger.error(f"Mistral API error generating answer: {response.status_code}")
            return "I have an interesting story about that, but I'd need more time to explain it properly."
            
    except Exception as e:
        logger.error(f"Error generating impostor answer: {str(e)}")
        return "I have an interesting story about that, but I'd need more time to explain it properly."

async def clone_voice(audio_file):
    """Clone a voice using ElevenLabs API."""
    try:
        headers = {
            'xi-api-key': ELEVENLABS_API_KEY
        }
        
        with open(audio_file, 'rb') as f:
            files = {
                'files': ('recording.wav', f, 'audio/wav')
            }
            
            response = requests.post(
                'https://api.elevenlabs.io/v1/voices/add',
                headers=headers,
                files=files,
                timeout=30
            )
            
        if response.status_code == 200:
            voice_id = response.json().get('voice_id')
            logger.info(f"Successfully cloned voice: {voice_id}")
            return voice_id
        else:
            logger.error(f"ElevenLabs voice cloning error: {response.status_code}")
            return None
            
    except Exception as e:
        logger.error(f"Error cloning voice: {str(e)}")
        return None

async def generate_cloned_speech(voice_id, text):
    """Generate speech using ElevenLabs with a cloned voice."""
    try:
        headers = {
            'xi-api-key': ELEVENLABS_API_KEY,
            'Content-Type': 'application/json'
        }
        
        payload = {
            'text': text,
            'voice_settings': {
                'stability': 0.75,
                'similarity_boost': 0.75
            }
        }
        
        response = requests.post(
            f'https://api.elevenlabs.io/v1/text-to-speech/{voice_id}',
            headers=headers,
            json=payload,
            timeout=30
        )
        
        if response.status_code == 200:
            filename = f"temp/impostor_audio_{uuid.uuid4()}.mp3"
            with open(filename, 'wb') as f:
                f.write(response.content)
            logger.info(f"Generated cloned speech: {filename}")
            return filename
        else:
            logger.error(f"ElevenLabs speech generation error: {response.status_code}")
            return None
            
    except Exception as e:
        logger.error(f"Error generating cloned speech: {str(e)}")
        return None

@app.route('/')
def home():
    """Serve the main game page."""
    return render_template('index.html')

@app.route('/api/start_game', methods=['POST'])
async def start_game():
    """Initialize a new game session."""
    try:
        data = request.get_json()
        game_id = data.get('game_id')
        
        if game_id not in game_state.games:
            return jsonify({'error': 'Game not found'}), 404
            
        game = game_state.games[game_id]
        
        # Generate question for the round
        question = await generate_question()
        game['question'] = question
        game['current_phase'] = 'recording'
        
        return jsonify({
            'status': 'success',
            'question': question
        })
        
    except Exception as e:
        logger.error(f"Error starting game: {str(e)}")
        return jsonify({'error': 'Internal server error'}), 500

@app.route('/api/submit_recording', methods=['POST'])
async def submit_recording():
    """Handle voice recording submissions."""
    try:
        game_id = request.form.get('game_id')
        player_id = request.form.get('player_id')
        audio_file = request.files.get('audio')
        
        if not all([game_id, player_id, audio_file]):
            return jsonify({'error': 'Missing required data'}), 400
            
        if game_id not in game_state.games:
            return jsonify({'error': 'Game not found'}), 404
            
        # Save the recording
        filename = secure_filename(f"recording_{game_id}_{player_id}.wav")
        filepath = os.path.join('temp', filename)
        audio_file.save(filepath)
        
        game_state.games[game_id]['recordings'][player_id] = filepath
        
        return jsonify({'status': 'success'})
        
    except Exception as e:
        logger.error(f"Error submitting recording: {str(e)}")
        return jsonify({'error': 'Internal server error'}), 500

@app.route('/api/process_impostor', methods=['POST'])
async def process_impostor():
    """Handle the complete impostor voice generation process."""
    try:
        data = request.get_json()
        game_id = data.get('game_id')
        impostor_id = data.get('impostor_id')
        
        if game_id not in game_state.games:
            return jsonify({'error': 'Game not found'}), 404
            
        game = game_state.games[game_id]
        
        # Generate impostor's answer
        impostor_answer = await generate_impostor_answer(game['question'])
        game['impostor_answer'] = impostor_answer
        
        # Get impostor's original recording
        original_recording = game['recordings'].get(impostor_id)
        if not original_recording:
            return jsonify({'error': 'Original recording not found'}), 404
        
        # Clone voice
        voice_id = await clone_voice(original_recording)
        if not voice_id:
            return jsonify({'error': 'Voice cloning failed'}), 500
            
        # Generate modified speech
        audio_file = await generate_cloned_speech(voice_id, impostor_answer)
        if not audio_file:
            return jsonify({'error': 'Speech generation failed'}), 500
            
        game['modified_recording'] = audio_file
        
        return jsonify({
            'status': 'success',
            'audio_url': audio_file
        })
        
    except Exception as e:
        logger.error(f"Error processing impostor: {str(e)}")
        return jsonify({'error': 'Internal server error'}), 500

@socketio.on('join_game')
def handle_join_game(data):
    """Handle a player joining the game."""
    game_id = data.get('game_id')
    player_name = data.get('player_name')
    
    if game_id in game_state.games:
        game = game_state.games[game_id]
        if len(game['players']) < 5:
            player_id = len(game['players']) + 1
            game['players'].append({
                'id': player_id,
                'name': player_name
            })
            emit('player_joined', {
                'player_id': player_id,
                'player_name': player_name
            }, broadcast=True, room=game_id)

@socketio.on('submit_vote')
def handle_vote(data):
    """Process player votes and determine round outcome."""
    game_id = data.get('game_id')
    voter_id = data.get('voter_id')
    vote_for = data.get('vote_for')
    
    if game_id in game_state.games:
        game = game_state.games[game_id]
        game['votes'][voter_id] = vote_for
        
        # Check if all players have voted
        if len(game['votes']) == len(game['players']):
            # Calculate results
            votes_count = {}
            for vote in game['votes'].values():
                votes_count[vote] = votes_count.get(vote, 0) + 1
            
            most_voted = max(votes_count.items(), key=lambda x: x[1])[0]
            
            # Update scores
            if most_voted == game['impostor']:
                game['score']['player_wins'] += 1
            else:
                game['score']['impostor_wins'] += 1
            
            # Store round results
            game['completed_rounds'].append({
                'round_number': game['round_number'],
                'impostor': game['impostor'],
                'votes': game['votes'].copy(),
                'most_voted': most_voted
            })
            
            # Emit results
            emit('round_result', {
                'impostor': game['impostor'],
                'most_voted': most_voted,
                'votes': game['votes'],
                'score': game['score']
            }, broadcast=True, room=game_id)

if __name__ == '__main__':
    # Create temporary directory for recordings if it doesn't exist
    os.makedirs('temp', exist_ok=True)
    
    # Start the server
    socketio.run(app, host='0.0.0.0', port=7860, debug=True)