#!/usr/bin/env python
"""
Script to sync ALL messages from Zulip to ChromaDB with NO restrictions.
This script will sync everything - all channels, all users, all time periods.
"""
import os
import sys
import logging
from datetime import datetime

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

# Add the current directory to the path so we can import the app module
sys.path.append(os.path.dirname(os.path.abspath(__file__)))

# Apply NumPy compatibility patch for ChromaDB
from app.utils import patch_chromadb_numpy
patch_chromadb_numpy()

from app import create_app
from app.db import get_db_session
from app.db.zulip_service import ZulipDatabaseService
from app.db.chroma_service import ChromaDBService
from app.models.zulip import Message

def sync_all_messages():
    """
    Sync ALL messages from Zulip to ChromaDB with no restrictions.
    All messages are processed in a single pass.
    
    Returns:
        dict: Statistics about the sync
    """
    logger.info("Starting unrestricted sync of ALL messages in one pass")
    
    session = get_db_session()
    total_synced = 0
    already_exists = 0
    channel_counts = {}
    
    # Get all messages at once
    logger.info("Fetching ALL messages from Zulip database")
    messages = session.query(Message).order_by(Message.id).all()
    total_messages = len(messages)
    logger.info(f"Found {total_messages} total messages in Zulip database")
    
    # Process all messages
    logger.info("Processing all messages")
    for i, message in enumerate(messages):
        message_id = message.id
        
        # Log progress at intervals
        if i % 500 == 0 and i > 0:
            logger.info(f"Progress: {i}/{total_messages} messages processed ({(i/total_messages)*100:.1f}%)")
        
        # Get message details
        try:
            channel_name = ZulipDatabaseService.get_channel_name_for_message(message)
            sender_name = ZulipDatabaseService.get_sender_name_for_message(message)
            
            # Handle None channel names
            if channel_name is None:
                channel_name = "Unknown Channel"
                logger.warning(f"Message {message_id} has None channel name, using '{channel_name}' instead")
            
            # Check if message already exists in ChromaDB
            if ChromaDBService.message_exists(message_id):
                already_exists += 1
                continue
            
            # Add message to ChromaDB
            success = ChromaDBService.add_message(
                message_id=message_id,
                content=message.content,
                channel_name=channel_name,
                subject=message.subject,
                sender_name=sender_name,
                date_sent=message.date_sent
            )
            
            if success:
                total_synced += 1
                
                # Update channel counts
                if channel_name not in channel_counts:
                    channel_counts[channel_name] = 0
                channel_counts[channel_name] += 1
            else:
                logger.warning(f"Failed to add message {message_id} to ChromaDB")
                
        except Exception as e:
            logger.error(f"Error processing message {message_id}: {e}")
    
    # Print channel statistics
    if channel_counts:
        logger.info("Messages synced by channel:")
        for channel, count in sorted(channel_counts.items()):
            logger.info(f"- {channel}: {count} messages")
    
    # Return statistics
    return {
        'total_messages': total_messages,
        'total_synced': total_synced,
        'already_exists': already_exists,
        'channel_counts': channel_counts
    }

def main():
    """Main entry point."""
    try:
        # Create the Flask app (needed for context)
        app = create_app()
        
        with app.app_context():
            print("\n====================================================")
            print("STARTING UNRESTRICTED SYNC OF ALL ZULIP MESSAGES")
            print(f"Started at: {datetime.now()}")
            print("====================================================\n")
            
            # Sync all messages
            start_time = datetime.now()
            stats = sync_all_messages()
            end_time = datetime.now()
            duration = end_time - start_time
            
            # Print summary
            print("\n====================================================")
            print("SYNC COMPLETE")
            print(f"Started at: {start_time}")
            print(f"Completed at: {end_time}")
            print(f"Duration: {duration}")
            print(f"Total messages in Zulip: {stats['total_messages']}")
            print(f"Total messages synced: {stats['total_synced']}")
            print(f"Messages already in ChromaDB: {stats['already_exists']}")
            
            # Print channel counts
            if stats['channel_counts']:
                print("\nMessages synced by channel:")
                for channel, count in sorted(stats['channel_counts'].items()):
                    print(f"- {channel}: {count} messages")
                    
            print("====================================================\n")
    
    except KeyboardInterrupt:
        print("\nSync process interrupted by user")
        logger.info("Sync process interrupted by user")
    except Exception as e:
        print(f"\nError during sync: {e}")
        logger.error(f"Error during sync: {e}")

if __name__ == "__main__":
    main()