account

type Account struct {
	ID       string               `json:"id"`
	Balances map[Currency]float64 `json:"balances,omitempty"`
}

type Currency string

type Repository interface {
	Store(*Account) error
	Find(id string) (*Account, error)
	FindAll() []*Account
}

type Service interface {
	// CreateAccount creates new account with generated ID
	CreateAccount() (*Account, error)

	// GetAccount returns account by ID
	GetAccount(string) (*Account, error)

	// Accounts lists all accounts
	Accounts() []*Account

	// SetBalanceForAccount hard reset balance for account for given currency
	SetBalanceForAccount(*Account, Currency, float64) (*Account, error)
}