This code was written for the Google Assistant Codelabs. It integrates with Dialogflow.
The --import/-i flag with a CSV file allows to import a car dataset, and
feed it to the main bolt database in a single transaction.
The CSV format must be in the form :
id;insertion_date;brand;model;gearbox;fuel;mileage;regdate;price;zip_code;city_name;dpt_name;region_name;type;title;body_md5_hash;word_count
You can export brands and models in a Dialogflow entity compatible format using
the --export/-e flag. This will create an exports/ folder containing
two files : brands.json and models.json. All you have to do is to copy
the content of these files, switch your Dialogflow entity to raw mode and paste
it.