#!/usr/bin/env python3
"""
Text User Interface (TUI) for Voice Assistant - Simple Version
AI Now Inc - Del Mar Demo Unit
Laboratory Assistant: Claw 🏭

This version uses the existing working components from main.py
"""

import os
import sys
import json
import logging
import signal
import time
from pathlib import Path
from datetime import datetime

# Try to import rich for beautiful TUI
try:
    from rich.console import Console
    from rich.panel import Panel
    from rich import box
    RICH_AVAILABLE = True
except ImportError:
    RICH_AVAILABLE = False
    print("Installing rich for TUI...")
    import subprocess
    subprocess.check_call([sys.executable, '-m', 'pip', 'install', 'rich'])
    from rich.console import Console
    from rich.panel import Panel
    from rich import box
    RICH_AVAILABLE = True
    print("Rich installed!")

from assistant import VoiceAssistant
from tts_engine import TTSEngine
from hotword_detector import HotwordDetector

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)


class TUIAssistant:
    """Simple TUI-based voice assistant."""
    
    def __init__(self, config_path: str = "config.json"):
        self.config_path = Path(config_path)
        self.config = self._load_config()
        
        # Initialize components
        logger.info("Initializing TUI voice assistant...")
        self.assistant = VoiceAssistant(str(self.config_path))
        self.tts = TTSEngine(str(self.config_path))
        self.hotword_detector = HotwordDetector(
            str(self.config_path).replace("config.json", "hotword_config.json")
        )
        
        # State
        self.is_running = False
        self.conversation_history = []
        self.max_history = 10
        
        # Rich console
        self.console = Console()
        
        # Setup signal handlers
        signal.signal(signal.SIGINT, self._signal_handler)
        signal.signal(signal.SIGTERM, self._signal_handler)
        
        # Set callback for hotword detection
        self.hotword_detector.set_callback(self._on_hotword)
        
        logger.info("TUI Voice assistant initialized")
    
    def _load_config(self) -> dict:
        """Load configuration."""
        try:
            with open(self.config_path, 'r') as f:
                return json.load(f)
        except FileNotFoundError:
            logger.warning("Config not found, using defaults")
            return {}
    
    def _signal_handler(self, sig, frame):
        """Handle shutdown signals."""
        logger.info("Shutdown signal received")
        self.is_running = False
    
    def _on_hotword(self):
        """Callback when hotword is detected."""
        self.console.print("\n[bold green]✨ Hotword detected! ✨[/bold green]")
        self.tts.speak("Yes?", "en")
    
    def _add_to_history(self, role: str, text: str):
        """Add message to conversation history."""
        timestamp = datetime.now().strftime("%H:%M:%S")
        self.conversation_history.append({
            'timestamp': timestamp,
            'role': role,
            'text': text
        })
        if len(self.conversation_history) > self.max_history:
            self.conversation_history.pop(0)
    
    def run(self):
        """Run the TUI voice assistant."""
        logger.info("Starting TUI voice assistant...")
        
        # Display welcome screen
        self.console.print(Panel.fit(
            "[bold]🎤 Voice Assistant - AI Now Inc[/bold]\n"
            "[cyan]Laboratory Assistant: Claw 🏭[/cyan]\n\n"
            "Say '[bold]Hey Osiris[/bold]' or '[bold]你好 Osiris[/bold]' to activate\n"
            "Press [bold]Ctrl+C[/bold] to stop",
            box=box.ROUNDED,
            border_style="blue"
        ))
        
        self.is_running = True
        self.console.print("\n[bold blue]→[/bold blue] Listening for hotword...")
        
        # Main loop - use hotword detector's blocking detect
        while self.is_running:
            try:
                # Wait for hotword (this blocks until detected or timeout)
                detected_keyword = self.hotword_detector.detect(timeout=30)
                
                if detected_keyword:
                    self.console.print(f"\n[bold green]✓[/bold green] Heard: '{detected_keyword}'")
                    
                    # For now, just respond with a simple message
                    # In a full implementation, you'd use speech recognition here
                    response = "I heard you! What would you like me to do?"
                    self._add_to_history('assistant', response)
                    self.console.print(f"[bold cyan]🤖:[/bold cyan] {response}")
                    self.tts.speak(response, "en")
                else:
                    self.console.print("[yellow]⏰ Timeout - trying again...[/yellow]")
                    
            except KeyboardInterrupt:
                logger.info("Interrupted by user")
                break
            except Exception as e:
                logger.error(f"Error: {e}")
                time.sleep(1)
        
        self.shutdown()
    
    def shutdown(self):
        """Clean shutdown."""
        logger.info("Shutting down...")
        self.is_running = False
        
        if hasattr(self, 'hotword_detector'):
            self.hotword_detector.stop()
        
        self.console.print("\n[bold red]Voice Assistant stopped.[/bold red]")
        logger.info("Shutdown complete")


def main():
    """Main entry point."""
    import argparse
    
    parser = argparse.ArgumentParser(description='TUI Voice Assistant')
    parser.add_argument('--config', default='config.json', help='Config file path')
    args = parser.parse_args()
    
    app = TUIAssistant(config_path=args.config)
    app.run()


if __name__ == '__main__':
    main()