#!/usr/bin/env python3

import argparse
import json
import os
import sys
import random
import subprocess
from pathlib import Path
from datetime import datetime

try:
    from dotenv import load_dotenv
    load_dotenv()
except ImportError:
    pass  # dotenv is optional


def get_completion_messages():
    """Return list of friendly completion messages."""
    return [
        "Work complete!",
        "All done!",
        "Task finished!",
        "Job complete!",
        "Ready for next task!"
    ]


def get_tts_script_path():
    """
    Determine which TTS script to use - only pyttsx3 is available.
    """
    # Get current script directory and construct utils/tts path
    script_dir = Path(__file__).parent
    tts_dir = script_dir / "utils" / "tts"
    
    # Use pyttsx3 (no API key required)
    pyttsx3_script = tts_dir / "pyttsx3_tts.py"
    if pyttsx3_script.exists():
        return str(pyttsx3_script)
    
    return None


def get_llm_completion_message():
    """
    Generate completion message using Anthropic or fallback to random message.
    
    Returns:
        str: Generated or fallback completion message
    """
    # Get current script directory and construct utils/llm path
    script_dir = Path(__file__).parent
    llm_dir = script_dir / "utils" / "llm"
    
    # Try Anthropic first
    if os.getenv('__ANTHROPIC_API_KEY'):
        anth_script = llm_dir / "anth.py"
        if anth_script.exists():
            try:
                result = subprocess.run([
                    "python3", str(anth_script), "--completion"
                ], 
                capture_output=True,
                text=True,
                timeout=10
                )
                if result.returncode == 0 and result.stdout.strip():
                    return result.stdout.strip()
            except (subprocess.TimeoutExpired, subprocess.SubprocessError):
                pass
    
    # Fallback to random predefined message
    messages = get_completion_messages()
    return random.choice(messages)

def announce_completion():
    """Announce completion using the best available TTS service."""
    try:
        tts_script = get_tts_script_path()
        if not tts_script:
            return  # No TTS scripts available
        
        # Get completion message (LLM-generated or fallback)
        completion_message = get_llm_completion_message()
        
        # Call the TTS script with the completion message
        subprocess.run([
            "python3", tts_script, completion_message
        ], 
        capture_output=True,  # Suppress output
        timeout=10  # 10-second timeout
        )
        
    except (subprocess.TimeoutExpired, subprocess.SubprocessError, FileNotFoundError):
        # Fail silently if TTS encounters issues
        pass
    except Exception:
        # Fail silently for any other errors
        pass


def main():
    try:
        # Parse command line arguments
        parser = argparse.ArgumentParser()
        parser.add_argument('--chat', action='store_true', help='Copy transcript to chat.json')
        parser.add_argument('--notify', action='store_true', help='Enable TTS completion announcement')
        args = parser.parse_args()
        
        # Read JSON input from stdin
        input_data = json.load(sys.stdin)

        # Extract required fields
        session_id = input_data.get("session_id", "")
        stop_hook_active = input_data.get("stop_hook_active", False)

        # Ensure log directory exists
        log_dir = os.path.join(os.getcwd(), ".claude", "logs")
        os.makedirs(log_dir, exist_ok=True)
        log_path = os.path.join(log_dir, "stop.json")

        # Read existing log data or initialize empty list
        if os.path.exists(log_path):
            with open(log_path, 'r') as f:
                try:
                    log_data = json.load(f)
                except (json.JSONDecodeError, ValueError):
                    log_data = []
        else:
            log_data = []
        
        # Append new data
        log_data.append(input_data)
        
        # Write back to file with formatting
        with open(log_path, 'w') as f:
            json.dump(log_data, f, indent=2)
        
        # Handle --chat switch
        if args.chat and 'transcript_path' in input_data:
            transcript_path = input_data['transcript_path']
            if os.path.exists(transcript_path):
                # Read .jsonl file and convert to JSON array
                chat_data = []
                try:
                    with open(transcript_path, 'r') as f:
                        for line in f:
                            line = line.strip()
                            if line:
                                try:
                                    chat_data.append(json.loads(line))
                                except json.JSONDecodeError:
                                    pass  # Skip invalid lines
                    
                    # Write to .claude/logs/chat.json
                    chat_file = os.path.join(log_dir, 'chat.json')
                    with open(chat_file, 'w') as f:
                        json.dump(chat_data, f, indent=2)
                except Exception:
                    pass  # Fail silently

        # Announce completion via TTS (only if --notify flag is set)
        if args.notify:
            announce_completion()

        sys.exit(0)

    except json.JSONDecodeError:
        # Handle JSON decode errors gracefully
        sys.exit(0)
    except Exception:
        # Handle any other errors gracefully
        sys.exit(0)


if __name__ == "__main__":
    main()