MoneyForward to YNAB migrator

This Ruby script downloads transaction history from Money Forward then uploads it to YNAB.

Principle

Use Capybara with the Cuprite driver to log into the Money Forward website and download transaction history CSV files.
Parse the CSV files and converts the data to a format that works with YNAB.
Use YNAB API Ruby library to post transactions to your YNAB budget.
Budget and account mappings are set in a configuration file (config.yml).

You'll need Ruby and Bundler.

# Install dependencies
bundle install

# Start a config YAML file
cp config/example.yml config/david.yml

The script currently looks for credentials in environment variables:

You can for example use envchain to manage those credentials:

envchain --set --noecho mfynab MONEYFORWARD_USERNAME MONEYFORWARD_PASSWORD YNAB_ACCESS_TOKEN

To run, you'll simply need to set the environment variables. Using envchain, that'll look like this:

envchain mfynab bin/mfynab config/david.yml

After checking out the repo, run bundle install to install dependencies. Then, run bin/rake test to run the tests.

Force MoneyForward to sync all accounts before downloading data. (Can take a while.)
Use Thor to manage the CLI. (And/or TTY?)
Implement Transaction model to extract some logic from existing classes.
Turn into a gem and publish.
Handle the Amazon account differently (use account name as payee instead of content?)
Implement CLI to setup config.
- Save/update session_id so browser is only needed once.
Get rid of envchain?
- Store config/credentials in ~/.config/?
- Encrypt config, use Keyring or other OS-level secure storage?
  - Possible to write a gem with native extension based on https://github.com/hrantzsch/keychain?
- Open browser, ask user to log into MoneyForward and store cookie? (Does it expire though?)
  - Or prompt user from credentials in terminal and fill in form in headless browser
  - Need to handle case when cookie has expired:
    
    セキュリティ設定最終利用時間から[30日]後に自動ログアウト