"""
Controller for lien check endpoints.
"""
from flask import Blueprint, request, jsonify
from app.middleware import api_key_required
from app.models import LienCheckRequest, LienCheckResponse
import logging

# Configure logger
logger = logging.getLogger(__name__)

# Create blueprint
lien_bp = Blueprint('lien', __name__)

@lien_bp.route('/LienCheck', methods=['POST'])
@api_key_required
def lien_check():
    """
    Endpoint to check lien amount on an account.
    
    This method is used to get the applied lien amount for a specific account.
    
    Returns:
        JSON response with lien amount details
    """
    try:
        # Parse and validate request
        data = request.get_json()
        if not data:
            return jsonify({
                'resultCode': '400',
                'resultDescription': 'Invalid JSON payload'
            }), 400
        
        # Validate required fields
        required_fields = ['transactionId', 'customerId', 'accountId', 'countryId']
        for field in required_fields:
            if field not in data:
                return jsonify({
                    'resultCode': '422',
                    'resultDescription': f'Missing required field: {field}'
                }), 422
        
        # Create request model
        req = LienCheckRequest.from_dict(data)
        
        # Process lien check (this would connect to the business logic)
        # For demonstration, we'll return a mock response
        
        # Create response
        response = LienCheckResponse(
            lienAmount=20000.0,
            resultCode="00",
            resultDescription="Successful"
        )
        
        logger.info(f"Processed lien check for customer {req.customerId}, account {req.accountId}")
        return jsonify(response.to_dict())
    
    except Exception as e:
        logger.error(f"Error processing lien check: {str(e)}")
        return jsonify({
            'resultCode': '500',
            'resultDescription': 'Internal server error'
        }), 500