#!/usr/bin/env python3
"""
Chat System Database Migration
Adds chat functionality to the Moto Adventure application.
"""

import os
import sys
from datetime import datetime

# Add the app directory to the Python path
sys.path.insert(0, '/opt/site')

from app import create_app, db
from app.models import ChatRoom, ChatMessage, ChatParticipant

def run_migration():
    """Run the chat system migration"""
    app = create_app()
    
    with app.app_context():
        print(f"[{datetime.now()}] Starting chat system migration...")
        
        try:
            # Create the chat tables
            print("Creating chat system tables...")
            db.create_all()
            
            # Get or create system user for welcome messages and room ownership
            print("Setting up system user...")
            from app.models import User
            
            system_user = User.query.filter_by(email='system@motoadventure.local').first()
            if not system_user:
                system_user = User(
                    nickname='System',
                    email='system@motoadventure.local',
                    is_admin=True,
                    is_active=True
                )
                system_user.set_password('system123!')  # Random password, won't be used
                db.session.add(system_user)
                db.session.commit()
                print("  ✓ Created system user")
            
            # Create default chat rooms
            print("Creating default chat rooms...")
            
            # General chat room
            general_room = ChatRoom.query.filter_by(name="General Discussion").first()
            if not general_room:
                general_room = ChatRoom(
                    name="General Discussion",
                    description="General conversation about motorcycles and adventures",
                    is_private=False,
                    is_active=True,
                    created_by_id=system_user.id
                )
                db.session.add(general_room)
                print("  ✓ Created General Discussion room")
            
            # Technical support room
            support_room = ChatRoom.query.filter_by(name="Technical Support").first()
            if not support_room:
                support_room = ChatRoom(
                    name="Technical Support",
                    description="Get help with technical issues and app support",
                    is_private=False,
                    is_active=True,
                    room_type="admin_support",
                    created_by_id=system_user.id
                )
                db.session.add(support_room)
                print("  ✓ Created Technical Support room")
            
            # Route planning room
            routes_room = ChatRoom.query.filter_by(name="Route Planning").first()
            if not routes_room:
                routes_room = ChatRoom(
                    name="Route Planning",
                    description="Discuss routes, share GPX files, and plan adventures",
                    is_private=False,
                    is_active=True,
                    created_by_id=system_user.id
                )
                db.session.add(routes_room)
                print("  ✓ Created Route Planning room")
            
            # Gear & Equipment room
            gear_room = ChatRoom.query.filter_by(name="Gear & Equipment").first()
            if not gear_room:
                gear_room = ChatRoom(
                    name="Gear & Equipment",
                    description="Discuss motorcycle gear, equipment reviews, and recommendations",
                    is_private=False,
                    is_active=True,
                    created_by_id=system_user.id
                )
                db.session.add(gear_room)
                print("  ✓ Created Gear & Equipment room")
            
            # Commit the changes
            db.session.commit()
            print("✓ Default chat rooms created successfully")
            
            # Add welcome messages to rooms
            print("Adding welcome messages...")
            
            # Add welcome messages if they don't exist
            rooms_with_messages = [
                (general_room, "Welcome to the General Discussion! Share your motorcycle adventures and connect with fellow riders."),
                (support_room, "Welcome to Technical Support! Our administrators are here to help with any issues or questions."),
                (routes_room, "Welcome to Route Planning! Share your favorite routes and discover new adventures."),
                (gear_room, "Welcome to Gear & Equipment! Discuss the best gear for your motorcycle adventures.")
            ]
            
            for room, message_text in rooms_with_messages:
                existing_message = ChatMessage.query.filter_by(
                    room_id=room.id,
                    user_id=system_user.id,
                    message_type='system'
                ).first()
                
                if not existing_message:
                    welcome_message = ChatMessage(
                        room_id=room.id,
                        user_id=system_user.id,
                        content=message_text,
                        message_type='system'
                    )
                    db.session.add(welcome_message)
            
            db.session.commit()
            print("✓ Welcome messages added")
            
            print(f"[{datetime.now()}] Chat system migration completed successfully!")
            print("\nChat System Features:")
            print("  • User-to-user messaging")
            print("  • Admin support channels")
            print("  • Post-specific discussions")
            print("  • Mobile app compatibility")
            print("  • Real-time messaging")
            print("  • Profanity filtering")
            print("  • Message moderation")
            print("\nDefault Chat Rooms:")
            print("  • General Discussion")
            print("  • Technical Support")
            print("  • Route Planning")
            print("  • Gear & Equipment")
            print("\nAPI Endpoints Available:")
            print("  • /api/v1/chat/* (Mobile app integration)")
            print("  • /chat/* (Web interface)")
            
        except Exception as e:
            print(f"[ERROR] Migration failed: {e}")
            db.session.rollback()
            raise e

if __name__ == '__main__':
    run_migration()