from flask import Blueprint, jsonify, request

def generate_crud_blueprint(model, service):
    bp = Blueprint(model.__name__.lower(), __name__)

    @bp.get('/')
    def list_items():
        items = service.list(request.args)
        return jsonify([item.as_dict() for item in items])

    @bp.get('/<int:id>')
    def get_item(id):
        item = service.get(id, request.args)
        return jsonify(item.as_dict())

    @bp.post('/')
    def create_item():
        obj = service.create(request.json)
        return jsonify(obj.as_dict())

    @bp.patch('/<int:id>')
    def update_item(id):
        obj = service.update(id, request.json)
        return jsonify(obj.as_dict())

    @bp.delete('/<int:id>')
    def delete_item(id):
        service.delete(id)
        return '', 204

    return bp