"""
Flask routes for the application.
"""

from flask import Blueprint, jsonify, request, abort

from app.services.chatbot_service import chatbot_service

bp = Blueprint('main', __name__)

@bp.route('/')
def index():
    """
    Root endpoint.

    Returns:
        JSON response with application information.
    """
    return jsonify({
        'name': 'Chatbot Application',
        'version': '1.0.0',
        'status': 'running'
    })

@bp.route('/api/health')
def health_check():
    """
    Health check endpoint.

    Returns:
        JSON response with health status.
    """
    return jsonify({
        'status': 'healthy'
    })

@bp.route('/api/chat', methods=['POST'])
def create_chat():
    """
    Create a new chat.

    Returns:
        JSON response with chat ID.
    """
    user_id = request.json.get('user_id', 'default_user')
    chat_id = chatbot_service.create_chat(user_id)

    return jsonify({
        'chat_id': chat_id,
        'messages': []
    })

@bp.route('/api/chat/<int:chat_id>/message', methods=['POST'])
def send_message(chat_id):
    """
    Send a message to the chatbot.

    Args:
        chat_id: ID of the chat.

    Returns:
        JSON response with bot response.
    """
    if not request.json or 'message' not in request.json:
        abort(400, description="Message is required")

    try:
        message = request.json['message']
        response = chatbot_service.get_response(chat_id, message)

        # Get the last message (bot response)
        messages = chatbot_service.get_chat_messages(chat_id)
        last_message = messages[-1]

        return jsonify(last_message)

    except ValueError as e:
        abort(404, description=str(e))

@bp.route('/api/chat/<int:chat_id>', methods=['GET'])
def get_chat(chat_id):
    """
    Get a chat by ID.

    Args:
        chat_id: ID of the chat.

    Returns:
        JSON response with chat messages.
    """
    try:
        messages = chatbot_service.get_chat_messages(chat_id)

        return jsonify({
            'chat_id': chat_id,
            'messages': messages
        })

    except ValueError as e:
        abort(404, description=str(e))