envelopes

See README for more info

Usage

envelopes <finances.yaml | sponge finances.yaml

value objects:

• Text50
• Positive
• Id
• ShorthandNumber
• Money ignoring currency
• Money storing currency as string

state:

• Envelope (Semigroup 'x and y', (+), Monoid '' Money.mempty)

event schema & apply events:

• Transaction

  • Spending
  • Refill

• State (envelopes :: HashMap (Id Envelope) Envelope, appliedTransactions :: HashSet (Id Envelope))

• applyTransactions :: Foldable f => State -> f Transaction -> Either TransactionError State

• delete envelopes if it contains ~0 money

• read & write input file

nice to have:

• Revolut export month -> events CLI
• Transaction date is an actual date
• Spending Tags is a NonEmpty [Text50]
• CLI --from-json --to-json
• exchange currencies https://stackoverflow.com/questions/27408873/how-to-model-a-currencies-money-and-banks-that-exchange-money-between-currenci